diff --git a/src/config.h b/src/config.h index ce7d9b04..a7ec2523 100644 --- a/src/config.h +++ b/src/config.h @@ -192,6 +192,7 @@ #define SUPPORT_FILEFORMAT_IQM 1 #define SUPPORT_FILEFORMAT_GLTF 1 #define SUPPORT_FILEFORMAT_VOX 1 +#define SUPPORT_FILEFORMAT_M3D 1 // Support procedural mesh generation functions, uses external par_shapes.h library // NOTE: Some generated meshes DO NOT include generated texture coordinates #define SUPPORT_MESH_GENERATION 1 diff --git a/src/external/m3d.h b/src/external/m3d.h new file mode 100644 index 00000000..0dacb6e0 --- /dev/null +++ b/src/external/m3d.h @@ -0,0 +1,6530 @@ +/* + * m3d.h + * https://gitlab.com/bztsrc/model3d + * + * Copyright (C) 2020 bzt (bztsrc@gitlab) + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * @brief ANSI C89 / C++11 single header importer / exporter SDK for the Model 3D (.M3D) format + * https://gitlab.com/bztsrc/model3d + * + * PNG decompressor included from (with minor modifications to make it C89 valid): + * stb_image - v2.13 - public domain image loader - http://nothings.org/stb_image.h + * + * @version: 1.0.0 + */ + +#ifndef _M3D_H_ +#define _M3D_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +#include + +/*** configuration ***/ +#ifndef M3D_MALLOC +# define M3D_MALLOC(sz) malloc(sz) +#endif +#ifndef M3D_REALLOC +# define M3D_REALLOC(p,nsz) realloc(p,nsz) +#endif +#ifndef M3D_FREE +# define M3D_FREE(p) free(p) +#endif +#ifndef M3D_LOG +# define M3D_LOG(x) +#endif +#ifndef M3D_APIVERSION +#define M3D_APIVERSION 0x0100 +#ifndef M3D_DOUBLE +typedef float M3D_FLOAT; +#ifndef M3D_EPSILON +/* carefully choosen for IEEE 754 don't change */ +#define M3D_EPSILON ((M3D_FLOAT)1e-7) +#endif +#else +typedef double M3D_FLOAT; +#ifndef M3D_EPSILON +#define M3D_EPSILON ((M3D_FLOAT)1e-14) +#endif +#endif +#if !defined(M3D_SMALLINDEX) +typedef uint32_t M3D_INDEX; +typedef uint16_t M3D_VOXEL; +#define M3D_UNDEF 0xffffffff +#define M3D_INDEXMAX 0xfffffffe +#define M3D_VOXUNDEF 0xffff +#define M3D_VOXCLEAR 0xfffe +#else +typedef uint16_t M3D_INDEX; +typedef uint8_t M3D_VOXEL; +#define M3D_UNDEF 0xffff +#define M3D_INDEXMAX 0xfffe +#define M3D_VOXUNDEF 0xff +#define M3D_VOXCLEAR 0xfe +#endif +#define M3D_NOTDEFINED 0xffffffff +#ifndef M3D_NUMBONE +#define M3D_NUMBONE 4 +#endif +#ifndef M3D_BONEMAXLEVEL +#define M3D_BONEMAXLEVEL 8 +#endif +#ifndef _MSC_VER +#ifndef _inline +#define _inline __inline__ +#endif +#define _pack __attribute__((packed)) +#define _unused __attribute__((unused)) +#else +#define _inline +#define _pack +#define _unused __pragma(warning(suppress:4100)) +#endif +#ifndef __cplusplus +#define _register register +#else +#define _register +#endif + +/*** File format structures ***/ + +/** + * M3D file format structure + * 3DMO m3dchunk_t file header chunk, may followed by compressed data + * PRVW preview chunk (optional) + * HEAD m3dhdr_t model header chunk + * n x m3dchunk_t more chunks follow + * CMAP color map chunk (optional) + * TMAP texture map chunk (optional) + * VRTS vertex data chunk (optional if it's a material library) + * BONE bind-pose skeleton, bone hierarchy chunk (optional) + * n x m3db_t contains propably more, but at least one bone + * n x m3ds_t skin group records + * MTRL* material chunk(s), can be more (optional) + * n x m3dp_t each material contains propapbly more, but at least one property + * the properties are configurable with a static array, see m3d_propertytypes + * n x m3dchunk_t at least one, but maybe more face chunks + * PROC* procedural face, or + * MESH* triangle mesh (vertex index list) or + * VOXT, VOXD* voxel image (converted to mesh) or + * SHPE* mathematical shapes like parameterized surfaces + * LBLS* annotation label chunks, can be more (optional) + * ACTN* action chunk(s), animation-pose skeletons, can be more (optional) + * n x m3dfr_t each action contains probably more, but at least one frame + * n x m3dtr_t each frame contains probably more, but at least one transformation + * ASET* inlined asset chunk(s), can be more (optional) + * OMD3 end chunk + * + * Typical chunks for a game engine: 3DMO, HEAD, CMAP, TMAP, VRTS, BONE, MTRL, MESH, ACTN, OMD3 + * Typical chunks for distibution: 3DMO, PRVW, HEAD, CMAP, TMAP, VRTS, BONE, MTRL, MESH, ACTN, ASET, OMD3 + * Typical chunks for voxel image: 3DMO, HEAD, CMAP, MTRL, VOXT, VOXD, VOXD, VOXD, OMD3 + * Typical chunks for CAD software: 3DMO, PRVW, HEAD, CMAP, TMAP, VRTS, MTRL, SHPE, LBLS, OMD3 + */ +#ifdef _MSC_VER +#pragma pack(push) +#pragma pack(1) +#endif + +typedef struct { + char magic[4]; + uint32_t length; + float scale; /* deliberately not M3D_FLOAT */ + uint32_t types; +} _pack m3dhdr_t; + +typedef struct { + char magic[4]; + uint32_t length; +} _pack m3dchunk_t; + +#ifdef _MSC_VER +#pragma pack(pop) +#endif + +/*** in-memory model structure ***/ + +/* textmap entry */ +typedef struct { + M3D_FLOAT u; + M3D_FLOAT v; +} m3dti_t; +#define m3d_textureindex_t m3dti_t + +/* texture */ +typedef struct { + char *name; /* texture name */ + uint8_t *d; /* pixels data */ + uint16_t w; /* width */ + uint16_t h; /* height */ + uint8_t f; /* format, 1 = grayscale, 2 = grayscale+alpha, 3 = rgb, 4 = rgba */ +} m3dtx_t; +#define m3d_texturedata_t m3dtx_t + +typedef struct { + M3D_INDEX vertexid; + M3D_FLOAT weight; +} m3dw_t; +#define m3d_weight_t m3dw_t + +/* bone entry */ +typedef struct { + M3D_INDEX parent; /* parent bone index */ + char *name; /* name for this bone */ + M3D_INDEX pos; /* vertex index position */ + M3D_INDEX ori; /* vertex index orientation (quaternion) */ + M3D_INDEX numweight; /* number of controlled vertices */ + m3dw_t *weight; /* weights for those vertices */ + M3D_FLOAT mat4[16]; /* transformation matrix */ +} m3db_t; +#define m3d_bone_t m3db_t + +/* skin: bone per vertex entry */ +typedef struct { + M3D_INDEX boneid[M3D_NUMBONE]; + M3D_FLOAT weight[M3D_NUMBONE]; +} m3ds_t; +#define m3d_skin_t m3ds_t + +/* vertex entry */ +typedef struct { + M3D_FLOAT x; /* 3D coordinates and weight */ + M3D_FLOAT y; + M3D_FLOAT z; + M3D_FLOAT w; + uint32_t color; /* default vertex color */ + M3D_INDEX skinid; /* skin index */ +#ifdef M3D_VERTEXTYPE + uint8_t type; +#endif +} m3dv_t; +#define m3d_vertex_t m3dv_t + +/* material property formats */ +enum { + m3dpf_color, + m3dpf_uint8, + m3dpf_uint16, + m3dpf_uint32, + m3dpf_float, + m3dpf_map +}; +typedef struct { + uint8_t format; + uint8_t id; +#ifdef M3D_ASCII +#define M3D_PROPERTYDEF(f,i,n) { (f), (i), (char*)(n) } + char *key; +#else +#define M3D_PROPERTYDEF(f,i,n) { (f), (i) } +#endif +} m3dpd_t; + +/* material property types */ +/* You shouldn't change the first 8 display and first 4 physical property. Assign the rest as you like. */ +enum { + m3dp_Kd = 0, /* scalar display properties */ + m3dp_Ka, + m3dp_Ks, + m3dp_Ns, + m3dp_Ke, + m3dp_Tf, + m3dp_Km, + m3dp_d, + m3dp_il, + + m3dp_Pr = 64, /* scalar physical properties */ + m3dp_Pm, + m3dp_Ps, + m3dp_Ni, + m3dp_Nt, + + m3dp_map_Kd = 128, /* textured display map properties */ + m3dp_map_Ka, + m3dp_map_Ks, + m3dp_map_Ns, + m3dp_map_Ke, + m3dp_map_Tf, + m3dp_map_Km, /* bump map */ + m3dp_map_D, + m3dp_map_N, /* normal map */ + + m3dp_map_Pr = 192, /* textured physical map properties */ + m3dp_map_Pm, + m3dp_map_Ps, + m3dp_map_Ni, + m3dp_map_Nt +}; +enum { /* aliases */ + m3dp_bump = m3dp_map_Km, + m3dp_map_il = m3dp_map_N, + m3dp_refl = m3dp_map_Pm +}; + +/* material property */ +typedef struct { + uint8_t type; /* property type, see "m3dp_*" enumeration */ + union { + uint32_t color; /* if value is a color, m3dpf_color */ + uint32_t num; /* if value is a number, m3dpf_uint8, m3pf_uint16, m3dpf_uint32 */ + float fnum; /* if value is a floating point number, m3dpf_float */ + M3D_INDEX textureid; /* if value is a texture, m3dpf_map */ + } value; +} m3dp_t; +#define m3d_property_t m3dp_t + +/* material entry */ +typedef struct { + char *name; /* name of the material */ + uint8_t numprop; /* number of properties */ + m3dp_t *prop; /* properties array */ +} m3dm_t; +#define m3d_material_t m3dm_t + +/* face entry */ +typedef struct { + M3D_INDEX materialid; /* material index */ + M3D_INDEX vertex[3]; /* 3D points of the triangle in CCW order */ + M3D_INDEX normal[3]; /* normal vectors */ + M3D_INDEX texcoord[3]; /* UV coordinates */ +#ifdef M3D_VERTEXMAX + M3D_INDEX paramid; /* parameter index */ + M3D_INDEX vertmax[3]; /* maximum 3D points of the triangle in CCW order */ +#endif +} m3df_t; +#define m3d_face_t m3df_t + +typedef struct { + uint16_t count; + char *name; +} m3dvi_t; +#define m3d_voxelitem_t m3dvi_t +#define m3d_parameter_t m3dvi_t + +/* voxel types (voxel palette) */ +typedef struct { + char *name; /* technical name of the voxel */ + uint8_t rotation; /* rotation info */ + uint16_t voxshape; /* voxel shape */ + M3D_INDEX materialid; /* material index */ + uint32_t color; /* default voxel color */ + M3D_INDEX skinid; /* skin index */ + uint8_t numitem; /* number of sub-voxels */ + m3dvi_t *item; /* list of sub-voxels */ +} m3dvt_t; +#define m3d_voxeltype_t m3dvt_t + +/* voxel data blocks */ +typedef struct { + char *name; /* name of the block */ + int32_t x, y, z; /* position */ + uint32_t w, h, d; /* dimension */ + uint8_t uncertain; /* probability */ + uint8_t groupid; /* block group id */ + M3D_VOXEL *data; /* voxel data, indices to voxel type */ +} m3dvx_t; +#define m3d_voxel_t m3dvx_t + +/* shape command types. must match the row in m3d_commandtypes */ +enum { + /* special commands */ + m3dc_use = 0, /* use material */ + m3dc_inc, /* include another shape */ + m3dc_mesh, /* include part of polygon mesh */ + /* approximations */ + m3dc_div, /* subdivision by constant resolution for both u, v */ + m3dc_sub, /* subdivision by constant, different for u and v */ + m3dc_len, /* spacial subdivision by maxlength */ + m3dc_dist, /* subdivision by maxdistance and maxangle */ + /* modifiers */ + m3dc_degu, /* degree for both u, v */ + m3dc_deg, /* separate degree for u and v */ + m3dc_rangeu, /* range for u */ + m3dc_range, /* range for u and v */ + m3dc_paru, /* u parameters (knots) */ + m3dc_parv, /* v parameters */ + m3dc_trim, /* outer trimming curve */ + m3dc_hole, /* inner trimming curve */ + m3dc_scrv, /* spacial curve */ + m3dc_sp, /* special points */ + /* helper curves */ + m3dc_bez1, /* Bezier 1D */ + m3dc_bsp1, /* B-spline 1D */ + m3dc_bez2, /* bezier 2D */ + m3dc_bsp2, /* B-spline 2D */ + /* surfaces */ + m3dc_bezun, /* Bezier 3D with control, UV, normal */ + m3dc_bezu, /* with control and UV */ + m3dc_bezn, /* with control and normal */ + m3dc_bez, /* control points only */ + m3dc_nurbsun, /* B-spline 3D */ + m3dc_nurbsu, + m3dc_nurbsn, + m3dc_nurbs, + m3dc_conn, /* connect surfaces */ + /* geometrical */ + m3dc_line, + m3dc_polygon, + m3dc_circle, + m3dc_cylinder, + m3dc_shpere, + m3dc_torus, + m3dc_cone, + m3dc_cube +}; + +/* shape command argument types */ +enum { + m3dcp_mi_t = 1, /* material index */ + m3dcp_hi_t, /* shape index */ + m3dcp_fi_t, /* face index */ + m3dcp_ti_t, /* texture map index */ + m3dcp_vi_t, /* vertex index */ + m3dcp_qi_t, /* vertex index for quaternions */ + m3dcp_vc_t, /* coordinate or radius, float scalar */ + m3dcp_i1_t, /* int8 scalar */ + m3dcp_i2_t, /* int16 scalar */ + m3dcp_i4_t, /* int32 scalar */ + m3dcp_va_t /* variadic arguments */ +}; + +#define M3D_CMDMAXARG 8 /* if you increase this, add more arguments to the macro below */ +typedef struct { +#ifdef M3D_ASCII +#define M3D_CMDDEF(t,n,p,a,b,c,d,e,f,g,h) { (char*)(n), (p), { (a), (b), (c), (d), (e), (f), (g), (h) } } + char *key; +#else +#define M3D_CMDDEF(t,n,p,a,b,c,d,e,f,g,h) { (p), { (a), (b), (c), (d), (e), (f), (g), (h) } } +#endif + uint8_t p; + uint8_t a[M3D_CMDMAXARG]; +} m3dcd_t; + +/* shape command */ +typedef struct { + uint16_t type; /* shape type */ + uint32_t *arg; /* arguments array */ +} m3dc_t; +#define m3d_shapecommand_t m3dc_t + +/* shape entry */ +typedef struct { + char *name; /* name of the mathematical shape */ + M3D_INDEX group; /* group this shape belongs to or -1 */ + uint32_t numcmd; /* number of commands */ + m3dc_t *cmd; /* commands array */ +} m3dh_t; +#define m3d_shape_t m3dh_t + +/* label entry */ +typedef struct { + char *name; /* name of the annotation layer or NULL */ + char *lang; /* language code or NULL */ + char *text; /* the label text */ + uint32_t color; /* color */ + M3D_INDEX vertexid; /* the vertex the label refers to */ +} m3dl_t; +#define m3d_label_t m3dl_t + +/* frame transformations / working copy skeleton entry */ +typedef struct { + M3D_INDEX boneid; /* selects a node in bone hierarchy */ + M3D_INDEX pos; /* vertex index new position */ + M3D_INDEX ori; /* vertex index new orientation (quaternion) */ +} m3dtr_t; +#define m3d_transform_t m3dtr_t + +/* animation frame entry */ +typedef struct { + uint32_t msec; /* frame's position on the timeline, timestamp */ + M3D_INDEX numtransform; /* number of transformations in this frame */ + m3dtr_t *transform; /* transformations */ +} m3dfr_t; +#define m3d_frame_t m3dfr_t + +/* model action entry */ +typedef struct { + char *name; /* name of the action */ + uint32_t durationmsec; /* duration in millisec (1/1000 sec) */ + M3D_INDEX numframe; /* number of frames in this animation */ + m3dfr_t *frame; /* frames array */ +} m3da_t; +#define m3d_action_t m3da_t + +/* inlined asset */ +typedef struct { + char *name; /* asset name (same pointer as in texture[].name) */ + uint8_t *data; /* compressed asset data */ + uint32_t length; /* compressed data length */ +} m3di_t; +#define m3d_inlinedasset_t m3di_t + +/*** in-memory model structure ***/ +#define M3D_FLG_FREERAW (1<<0) +#define M3D_FLG_FREESTR (1<<1) +#define M3D_FLG_MTLLIB (1<<2) +#define M3D_FLG_GENNORM (1<<3) + +typedef struct { + m3dhdr_t *raw; /* pointer to raw data */ + char flags; /* internal flags */ + signed char errcode; /* returned error code */ + char vc_s, vi_s, si_s, ci_s, ti_s, bi_s, nb_s, sk_s, fc_s, hi_s, fi_s, vd_s, vp_s; /* decoded sizes for types */ + char *name; /* name of the model, like "Utah teapot" */ + char *license; /* usage condition or license, like "MIT", "LGPL" or "BSD-3clause" */ + char *author; /* nickname, email, homepage or github URL etc. */ + char *desc; /* comments, descriptions. May contain '\n' newline character */ + M3D_FLOAT scale; /* the model's bounding cube's size in SI meters */ + M3D_INDEX numcmap; + uint32_t *cmap; /* color map */ + M3D_INDEX numtmap; + m3dti_t *tmap; /* texture map indices */ + M3D_INDEX numtexture; + m3dtx_t *texture; /* uncompressed textures */ + M3D_INDEX numbone; + m3db_t *bone; /* bone hierarchy */ + M3D_INDEX numvertex; + m3dv_t *vertex; /* vertex data */ + M3D_INDEX numskin; + m3ds_t *skin; /* skin data */ + M3D_INDEX nummaterial; + m3dm_t *material; /* material list */ +#ifdef M3D_VERTEXMAX + M3D_INDEX numparam; + m3dvi_t *param; /* parameters and their values list */ +#endif + M3D_INDEX numface; + m3df_t *face; /* model face, polygon (triangle) mesh */ + M3D_INDEX numvoxtype; + m3dvt_t *voxtype; /* model face, voxel types */ + M3D_INDEX numvoxel; + m3dvx_t *voxel; /* model face, cubes compressed into voxels */ + M3D_INDEX numshape; + m3dh_t *shape; /* model face, shape commands */ + M3D_INDEX numlabel; + m3dl_t *label; /* annotation labels */ + M3D_INDEX numaction; + m3da_t *action; /* action animations */ + M3D_INDEX numinlined; + m3di_t *inlined; /* inlined assets */ + M3D_INDEX numextra; + m3dchunk_t **extra; /* unknown chunks, application / engine specific data probably */ + m3di_t preview; /* preview chunk */ +} m3d_t; + +/*** export parameters ***/ +#define M3D_EXP_INT8 0 +#define M3D_EXP_INT16 1 +#define M3D_EXP_FLOAT 2 +#define M3D_EXP_DOUBLE 3 + +#define M3D_EXP_NOCMAP (1<<0) +#define M3D_EXP_NOMATERIAL (1<<1) +#define M3D_EXP_NOFACE (1<<2) +#define M3D_EXP_NONORMAL (1<<3) +#define M3D_EXP_NOTXTCRD (1<<4) +#define M3D_EXP_FLIPTXTCRD (1<<5) +#define M3D_EXP_NORECALC (1<<6) +#define M3D_EXP_IDOSUCK (1<<7) +#define M3D_EXP_NOBONE (1<<8) +#define M3D_EXP_NOACTION (1<<9) +#define M3D_EXP_INLINE (1<<10) +#define M3D_EXP_EXTRA (1<<11) +#define M3D_EXP_NOZLIB (1<<14) +#define M3D_EXP_ASCII (1<<15) +#define M3D_EXP_NOVRTMAX (1<<16) + +/*** error codes ***/ +#define M3D_SUCCESS 0 +#define M3D_ERR_ALLOC -1 +#define M3D_ERR_BADFILE -2 +#define M3D_ERR_UNIMPL -65 +#define M3D_ERR_UNKPROP -66 +#define M3D_ERR_UNKMESH -67 +#define M3D_ERR_UNKIMG -68 +#define M3D_ERR_UNKFRAME -69 +#define M3D_ERR_UNKCMD -70 +#define M3D_ERR_UNKVOX -71 +#define M3D_ERR_TRUNC -72 +#define M3D_ERR_CMAP -73 +#define M3D_ERR_TMAP -74 +#define M3D_ERR_VRTS -75 +#define M3D_ERR_BONE -76 +#define M3D_ERR_MTRL -77 +#define M3D_ERR_SHPE -78 +#define M3D_ERR_VOXT -79 + +#define M3D_ERR_ISFATAL(x) ((x) < 0 && (x) > -65) + +/* callbacks */ +typedef unsigned char *(*m3dread_t)(char *filename, unsigned int *size); /* read file contents into buffer */ +typedef void (*m3dfree_t)(void *buffer); /* free file contents buffer */ +typedef int (*m3dtxsc_t)(const char *name, const void *script, uint32_t len, m3dtx_t *output); /* interpret texture script */ +typedef int (*m3dprsc_t)(const char *name, const void *script, uint32_t len, m3d_t *model); /* interpret surface script */ +#endif /* ifndef M3D_APIVERSION */ + +/*** C prototypes ***/ +/* import / export */ +m3d_t *m3d_load(unsigned char *data, m3dread_t readfilecb, m3dfree_t freecb, m3d_t *mtllib); +unsigned char *m3d_save(m3d_t *model, int quality, int flags, unsigned int *size); +void m3d_free(m3d_t *model); +/* generate animation pose skeleton */ +m3dtr_t *m3d_frame(m3d_t *model, M3D_INDEX actionid, M3D_INDEX frameid, m3dtr_t *skeleton); +m3db_t *m3d_pose(m3d_t *model, M3D_INDEX actionid, uint32_t msec); + +/* private prototypes used by both importer and exporter */ +char *_m3d_safestr(char *in, int morelines); + +/*** C implementation ***/ +#ifdef M3D_IMPLEMENTATION +#if !defined(M3D_NOIMPORTER) || defined(M3D_EXPORTER) +/* material property definitions */ +static m3dpd_t m3d_propertytypes[] = { + M3D_PROPERTYDEF(m3dpf_color, m3dp_Kd, "Kd"), /* diffuse color */ + M3D_PROPERTYDEF(m3dpf_color, m3dp_Ka, "Ka"), /* ambient color */ + M3D_PROPERTYDEF(m3dpf_color, m3dp_Ks, "Ks"), /* specular color */ + M3D_PROPERTYDEF(m3dpf_float, m3dp_Ns, "Ns"), /* specular exponent */ + M3D_PROPERTYDEF(m3dpf_color, m3dp_Ke, "Ke"), /* emissive (emitting light of this color) */ + M3D_PROPERTYDEF(m3dpf_color, m3dp_Tf, "Tf"), /* transmission color */ + M3D_PROPERTYDEF(m3dpf_float, m3dp_Km, "Km"), /* bump strength */ + M3D_PROPERTYDEF(m3dpf_float, m3dp_d, "d"), /* dissolve (transparency) */ + M3D_PROPERTYDEF(m3dpf_uint8, m3dp_il, "il"), /* illumination model (informational, ignored by PBR-shaders) */ + + M3D_PROPERTYDEF(m3dpf_float, m3dp_Pr, "Pr"), /* roughness */ + M3D_PROPERTYDEF(m3dpf_float, m3dp_Pm, "Pm"), /* metallic, also reflection */ + M3D_PROPERTYDEF(m3dpf_float, m3dp_Ps, "Ps"), /* sheen */ + M3D_PROPERTYDEF(m3dpf_float, m3dp_Ni, "Ni"), /* index of refraction (optical density) */ + M3D_PROPERTYDEF(m3dpf_float, m3dp_Nt, "Nt"), /* thickness of face in millimeter, for printing */ + + /* aliases, note that "map_*" aliases are handled automatically */ + M3D_PROPERTYDEF(m3dpf_map, m3dp_map_Km, "bump"), + M3D_PROPERTYDEF(m3dpf_map, m3dp_map_N, "map_N"),/* as normal map has no scalar version, it's counterpart is 'il' */ + M3D_PROPERTYDEF(m3dpf_map, m3dp_map_Pm, "refl") +}; +/* shape command definitions. if more commands start with the same string, the longer must come first */ +static m3dcd_t m3d_commandtypes[] = { + /* technical */ + M3D_CMDDEF(m3dc_use, "use", 1, m3dcp_mi_t, 0, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_inc, "inc", 3, m3dcp_hi_t, m3dcp_vi_t, m3dcp_qi_t, m3dcp_vi_t, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_mesh, "mesh", 1, m3dcp_fi_t, m3dcp_fi_t, m3dcp_vi_t, m3dcp_qi_t, m3dcp_vi_t, 0, 0, 0), + /* approximations */ + M3D_CMDDEF(m3dc_div, "div", 1, m3dcp_vc_t, 0, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_sub, "sub", 2, m3dcp_vc_t, m3dcp_vc_t, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_len, "len", 1, m3dcp_vc_t, 0, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_dist, "dist", 2, m3dcp_vc_t, m3dcp_vc_t, 0, 0, 0, 0, 0, 0), + /* modifiers */ + M3D_CMDDEF(m3dc_degu, "degu", 1, m3dcp_i1_t, 0, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_deg, "deg", 2, m3dcp_i1_t, m3dcp_i1_t, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_rangeu, "rangeu", 1, m3dcp_ti_t, 0, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_range, "range", 2, m3dcp_ti_t, m3dcp_ti_t, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_paru, "paru", 2, m3dcp_va_t, m3dcp_vc_t, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_parv, "parv", 2, m3dcp_va_t, m3dcp_vc_t, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_trim, "trim", 3, m3dcp_va_t, m3dcp_ti_t, m3dcp_i2_t, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_hole, "hole", 3, m3dcp_va_t, m3dcp_ti_t, m3dcp_i2_t, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_scrv, "scrv", 3, m3dcp_va_t, m3dcp_ti_t, m3dcp_i2_t, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_sp, "sp", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0), + /* helper curves */ + M3D_CMDDEF(m3dc_bez1, "bez1", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_bsp1, "bsp1", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_bez2, "bez2", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_bsp2, "bsp2", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0), + /* surfaces */ + M3D_CMDDEF(m3dc_bezun, "bezun", 4, m3dcp_va_t, m3dcp_vi_t, m3dcp_ti_t, m3dcp_vi_t, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_bezu, "bezu", 3, m3dcp_va_t, m3dcp_vi_t, m3dcp_ti_t, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_bezn, "bezn", 3, m3dcp_va_t, m3dcp_vi_t, m3dcp_vi_t, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_bez, "bez", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_nurbsun, "nurbsun", 4, m3dcp_va_t, m3dcp_vi_t, m3dcp_ti_t, m3dcp_vi_t, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_nurbsu, "nurbsu", 3, m3dcp_va_t, m3dcp_vi_t, m3dcp_ti_t, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_nurbsn, "nurbsn", 3, m3dcp_va_t, m3dcp_vi_t, m3dcp_vi_t, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_nurbs, "nurbs", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_conn, "conn", 6, m3dcp_i2_t, m3dcp_ti_t, m3dcp_i2_t, m3dcp_i2_t, m3dcp_ti_t, m3dcp_i2_t, 0, 0), + /* geometrical */ + M3D_CMDDEF(m3dc_line, "line", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_polygon, "polygon", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_circle, "circle", 3, m3dcp_vi_t, m3dcp_qi_t, m3dcp_vc_t, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_cylinder,"cylinder",6, m3dcp_vi_t, m3dcp_qi_t, m3dcp_vc_t, m3dcp_vi_t, m3dcp_qi_t, m3dcp_vc_t, 0, 0), + M3D_CMDDEF(m3dc_shpere, "shpere", 2, m3dcp_vi_t, m3dcp_vc_t, 0, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_torus, "torus", 4, m3dcp_vi_t, m3dcp_qi_t, m3dcp_vc_t, m3dcp_vc_t, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_cone, "cone", 3, m3dcp_vi_t, m3dcp_vi_t, m3dcp_vi_t, 0, 0, 0, 0, 0), + M3D_CMDDEF(m3dc_cube, "cube", 3, m3dcp_vi_t, m3dcp_vi_t, m3dcp_vi_t, 0, 0, 0, 0, 0) +}; +#endif + +#include +#include + +#if !defined(M3D_NOIMPORTER) && !defined(STBI_INCLUDE_STB_IMAGE_H) +/* PNG decompressor from + + stb_image - v2.23 - public domain image loader - http://nothings.org/stb_image.h +*/ +static const char *_m3dstbi__g_failure_reason; + +enum +{ + STBI_default = 0, + + STBI_grey = 1, + STBI_grey_alpha = 2, + STBI_rgb = 3, + STBI_rgb_alpha = 4 +}; + +enum +{ + STBI__SCAN_load=0, + STBI__SCAN_type, + STBI__SCAN_header +}; + +typedef unsigned short _m3dstbi_us; + +typedef uint16_t _m3dstbi__uint16; +typedef int16_t _m3dstbi__int16; +typedef uint32_t _m3dstbi__uint32; +typedef int32_t _m3dstbi__int32; + +typedef struct +{ + _m3dstbi__uint32 img_x, img_y; + int img_n, img_out_n; + + void *io_user_data; + + int read_from_callbacks; + int buflen; + unsigned char buffer_start[128]; + + unsigned char *img_buffer, *img_buffer_end; + unsigned char *img_buffer_original, *img_buffer_original_end; +} _m3dstbi__context; + +typedef struct +{ + int bits_per_channel; + int num_channels; + int channel_order; +} _m3dstbi__result_info; + +#define STBI_ASSERT(v) +#define STBI_NOTUSED(v) (void)sizeof(v) +#define STBI__BYTECAST(x) ((unsigned char) ((x) & 255)) +#define STBI_MALLOC(sz) M3D_MALLOC(sz) +#define STBI_REALLOC(p,newsz) M3D_REALLOC(p,newsz) +#define STBI_FREE(p) M3D_FREE(p) +#define STBI_REALLOC_SIZED(p,oldsz,newsz) STBI_REALLOC(p,newsz) + +_inline static unsigned char _m3dstbi__get8(_m3dstbi__context *s) +{ + if (s->img_buffer < s->img_buffer_end) + return *s->img_buffer++; + return 0; +} + +_inline static int _m3dstbi__at_eof(_m3dstbi__context *s) +{ + return s->img_buffer >= s->img_buffer_end; +} + +static void _m3dstbi__skip(_m3dstbi__context *s, int n) +{ + if (n < 0) { + s->img_buffer = s->img_buffer_end; + return; + } + s->img_buffer += n; +} + +static int _m3dstbi__getn(_m3dstbi__context *s, unsigned char *buffer, int n) +{ + if (s->img_buffer+n <= s->img_buffer_end) { + memcpy(buffer, s->img_buffer, n); + s->img_buffer += n; + return 1; + } else + return 0; +} + +static int _m3dstbi__get16be(_m3dstbi__context *s) +{ + int z = _m3dstbi__get8(s); + return (z << 8) + _m3dstbi__get8(s); +} + +static _m3dstbi__uint32 _m3dstbi__get32be(_m3dstbi__context *s) +{ + _m3dstbi__uint32 z = _m3dstbi__get16be(s); + return (z << 16) + _m3dstbi__get16be(s); +} + +#define _m3dstbi__err(x,y) _m3dstbi__errstr(y) +static int _m3dstbi__errstr(const char *str) +{ + _m3dstbi__g_failure_reason = str; + return 0; +} + +_inline static void *_m3dstbi__malloc(size_t size) +{ + return STBI_MALLOC(size); +} + +static int _m3dstbi__addsizes_valid(int a, int b) +{ + if (b < 0) return 0; + return a <= 2147483647 - b; +} + +static int _m3dstbi__mul2sizes_valid(int a, int b) +{ + if (a < 0 || b < 0) return 0; + if (b == 0) return 1; + return a <= 2147483647/b; +} + +static int _m3dstbi__mad2sizes_valid(int a, int b, int add) +{ + return _m3dstbi__mul2sizes_valid(a, b) && _m3dstbi__addsizes_valid(a*b, add); +} + +static int _m3dstbi__mad3sizes_valid(int a, int b, int c, int add) +{ + return _m3dstbi__mul2sizes_valid(a, b) && _m3dstbi__mul2sizes_valid(a*b, c) && + _m3dstbi__addsizes_valid(a*b*c, add); +} + +static void *_m3dstbi__malloc_mad2(int a, int b, int add) +{ + if (!_m3dstbi__mad2sizes_valid(a, b, add)) return NULL; + return _m3dstbi__malloc(a*b + add); +} + +static void *_m3dstbi__malloc_mad3(int a, int b, int c, int add) +{ + if (!_m3dstbi__mad3sizes_valid(a, b, c, add)) return NULL; + return _m3dstbi__malloc(a*b*c + add); +} + +static unsigned char _m3dstbi__compute_y(int r, int g, int b) +{ + return (unsigned char) (((r*77) + (g*150) + (29*b)) >> 8); +} + +static unsigned char *_m3dstbi__convert_format(unsigned char *data, int img_n, int req_comp, unsigned int x, unsigned int y) +{ + int i,j; + unsigned char *good; + + if (req_comp == img_n) return data; + STBI_ASSERT(req_comp >= 1 && req_comp <= 4); + + good = (unsigned char *) _m3dstbi__malloc_mad3(req_comp, x, y, 0); + if (good == NULL) { + STBI_FREE(data); + _m3dstbi__err("outofmem", "Out of memory"); + return NULL; + } + + for (j=0; j < (int) y; ++j) { + unsigned char *src = data + j * x * img_n ; + unsigned char *dest = good + j * x * req_comp; + + #define STBI__COMBO(a,b) ((a)*8+(b)) + #define STBI__CASE(a,b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) + switch (STBI__COMBO(img_n, req_comp)) { + STBI__CASE(1,2) { dest[0]=src[0], dest[1]=255; } break; + STBI__CASE(1,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; + STBI__CASE(1,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=255; } break; + STBI__CASE(2,1) { dest[0]=src[0]; } break; + STBI__CASE(2,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; + STBI__CASE(2,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=src[1]; } break; + STBI__CASE(3,4) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2],dest[3]=255; } break; + STBI__CASE(3,1) { dest[0]=_m3dstbi__compute_y(src[0],src[1],src[2]); } break; + STBI__CASE(3,2) { dest[0]=_m3dstbi__compute_y(src[0],src[1],src[2]), dest[1] = 255; } break; + STBI__CASE(4,1) { dest[0]=_m3dstbi__compute_y(src[0],src[1],src[2]); } break; + STBI__CASE(4,2) { dest[0]=_m3dstbi__compute_y(src[0],src[1],src[2]), dest[1] = src[3]; } break; + STBI__CASE(4,3) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2]; } break; + default: STBI_ASSERT(0); + } + #undef STBI__CASE + } + + STBI_FREE(data); + return good; +} + +static _m3dstbi__uint16 _m3dstbi__compute_y_16(int r, int g, int b) +{ + return (_m3dstbi__uint16) (((r*77) + (g*150) + (29*b)) >> 8); +} + +static _m3dstbi__uint16 *_m3dstbi__convert_format16(_m3dstbi__uint16 *data, int img_n, int req_comp, unsigned int x, unsigned int y) +{ + int i,j; + _m3dstbi__uint16 *good; + + if (req_comp == img_n) return data; + STBI_ASSERT(req_comp >= 1 && req_comp <= 4); + + good = (_m3dstbi__uint16 *) _m3dstbi__malloc(req_comp * x * y * 2); + if (good == NULL) { + STBI_FREE(data); + _m3dstbi__err("outofmem", "Out of memory"); + return NULL; + } + + for (j=0; j < (int) y; ++j) { + _m3dstbi__uint16 *src = data + j * x * img_n ; + _m3dstbi__uint16 *dest = good + j * x * req_comp; + + #define STBI__COMBO(a,b) ((a)*8+(b)) + #define STBI__CASE(a,b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) + switch (STBI__COMBO(img_n, req_comp)) { + STBI__CASE(1,2) { dest[0]=src[0], dest[1]=0xffff; } break; + STBI__CASE(1,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; + STBI__CASE(1,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=0xffff; } break; + STBI__CASE(2,1) { dest[0]=src[0]; } break; + STBI__CASE(2,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; + STBI__CASE(2,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=src[1]; } break; + STBI__CASE(3,4) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2],dest[3]=0xffff; } break; + STBI__CASE(3,1) { dest[0]=_m3dstbi__compute_y_16(src[0],src[1],src[2]); } break; + STBI__CASE(3,2) { dest[0]=_m3dstbi__compute_y_16(src[0],src[1],src[2]), dest[1] = 0xffff; } break; + STBI__CASE(4,1) { dest[0]=_m3dstbi__compute_y_16(src[0],src[1],src[2]); } break; + STBI__CASE(4,2) { dest[0]=_m3dstbi__compute_y_16(src[0],src[1],src[2]), dest[1] = src[3]; } break; + STBI__CASE(4,3) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2]; } break; + default: STBI_ASSERT(0); + } + #undef STBI__CASE + } + + STBI_FREE(data); + return good; +} + +#define STBI__ZFAST_BITS 9 +#define STBI__ZFAST_MASK ((1 << STBI__ZFAST_BITS) - 1) + +typedef struct +{ + _m3dstbi__uint16 fast[1 << STBI__ZFAST_BITS]; + _m3dstbi__uint16 firstcode[16]; + int maxcode[17]; + _m3dstbi__uint16 firstsymbol[16]; + unsigned char size[288]; + _m3dstbi__uint16 value[288]; +} _m3dstbi__zhuffman; + +_inline static int _m3dstbi__bitreverse16(int n) +{ + n = ((n & 0xAAAA) >> 1) | ((n & 0x5555) << 1); + n = ((n & 0xCCCC) >> 2) | ((n & 0x3333) << 2); + n = ((n & 0xF0F0) >> 4) | ((n & 0x0F0F) << 4); + n = ((n & 0xFF00) >> 8) | ((n & 0x00FF) << 8); + return n; +} + +_inline static int _m3dstbi__bit_reverse(int v, int bits) +{ + STBI_ASSERT(bits <= 16); + return _m3dstbi__bitreverse16(v) >> (16-bits); +} + +static int _m3dstbi__zbuild_huffman(_m3dstbi__zhuffman *z, unsigned char *sizelist, int num) +{ + int i,k=0; + int code, next_code[16], sizes[17]; + + memset(sizes, 0, sizeof(sizes)); + memset(z->fast, 0, sizeof(z->fast)); + for (i=0; i < num; ++i) + ++sizes[sizelist[i]]; + sizes[0] = 0; + for (i=1; i < 16; ++i) + if (sizes[i] > (1 << i)) + return _m3dstbi__err("bad sizes", "Corrupt PNG"); + code = 0; + for (i=1; i < 16; ++i) { + next_code[i] = code; + z->firstcode[i] = (_m3dstbi__uint16) code; + z->firstsymbol[i] = (_m3dstbi__uint16) k; + code = (code + sizes[i]); + if (sizes[i]) + if (code-1 >= (1 << i)) return _m3dstbi__err("bad codelengths","Corrupt PNG"); + z->maxcode[i] = code << (16-i); + code <<= 1; + k += sizes[i]; + } + z->maxcode[16] = 0x10000; + for (i=0; i < num; ++i) { + int s = sizelist[i]; + if (s) { + int c = next_code[s] - z->firstcode[s] + z->firstsymbol[s]; + _m3dstbi__uint16 fastv = (_m3dstbi__uint16) ((s << 9) | i); + z->size [c] = (unsigned char ) s; + z->value[c] = (_m3dstbi__uint16) i; + if (s <= STBI__ZFAST_BITS) { + int j = _m3dstbi__bit_reverse(next_code[s],s); + while (j < (1 << STBI__ZFAST_BITS)) { + z->fast[j] = fastv; + j += (1 << s); + } + } + ++next_code[s]; + } + } + return 1; +} + +typedef struct +{ + unsigned char *zbuffer, *zbuffer_end; + int num_bits; + _m3dstbi__uint32 code_buffer; + + char *zout; + char *zout_start; + char *zout_end; + int z_expandable; + + _m3dstbi__zhuffman z_length, z_distance; +} _m3dstbi__zbuf; + +_inline static unsigned char _m3dstbi__zget8(_m3dstbi__zbuf *z) +{ + if (z->zbuffer >= z->zbuffer_end) return 0; + return *z->zbuffer++; +} + +static void _m3dstbi__fill_bits(_m3dstbi__zbuf *z) +{ + do { + STBI_ASSERT(z->code_buffer < (1U << z->num_bits)); + z->code_buffer |= (unsigned int) _m3dstbi__zget8(z) << z->num_bits; + z->num_bits += 8; + } while (z->num_bits <= 24); +} + +_inline static unsigned int _m3dstbi__zreceive(_m3dstbi__zbuf *z, int n) +{ + unsigned int k; + if (z->num_bits < n) _m3dstbi__fill_bits(z); + k = z->code_buffer & ((1 << n) - 1); + z->code_buffer >>= n; + z->num_bits -= n; + return k; +} + +static int _m3dstbi__zhuffman_decode_slowpath(_m3dstbi__zbuf *a, _m3dstbi__zhuffman *z) +{ + int b,s,k; + k = _m3dstbi__bit_reverse(a->code_buffer, 16); + for (s=STBI__ZFAST_BITS+1; ; ++s) + if (k < z->maxcode[s]) + break; + if (s == 16) return -1; + b = (k >> (16-s)) - z->firstcode[s] + z->firstsymbol[s]; + STBI_ASSERT(z->size[b] == s); + a->code_buffer >>= s; + a->num_bits -= s; + return z->value[b]; +} + +_inline static int _m3dstbi__zhuffman_decode(_m3dstbi__zbuf *a, _m3dstbi__zhuffman *z) +{ + int b,s; + if (a->num_bits < 16) _m3dstbi__fill_bits(a); + b = z->fast[a->code_buffer & STBI__ZFAST_MASK]; + if (b) { + s = b >> 9; + a->code_buffer >>= s; + a->num_bits -= s; + return b & 511; + } + return _m3dstbi__zhuffman_decode_slowpath(a, z); +} + +static int _m3dstbi__zexpand(_m3dstbi__zbuf *z, char *zout, int n) +{ + char *q; + int cur, limit, old_limit; + z->zout = zout; + if (!z->z_expandable) return _m3dstbi__err("output buffer limit","Corrupt PNG"); + cur = (int) (z->zout - z->zout_start); + limit = old_limit = (int) (z->zout_end - z->zout_start); + while (cur + n > limit) + limit *= 2; + q = (char *) STBI_REALLOC_SIZED(z->zout_start, old_limit, limit); + STBI_NOTUSED(old_limit); + if (q == NULL) return _m3dstbi__err("outofmem", "Out of memory"); + z->zout_start = q; + z->zout = q + cur; + z->zout_end = q + limit; + return 1; +} + +static int _m3dstbi__zlength_base[31] = { + 3,4,5,6,7,8,9,10,11,13, + 15,17,19,23,27,31,35,43,51,59, + 67,83,99,115,131,163,195,227,258,0,0 }; + +static int _m3dstbi__zlength_extra[31]= +{ 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0 }; + +static int _m3dstbi__zdist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193, +257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0}; + +static int _m3dstbi__zdist_extra[32] = +{ 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13}; + +static int _m3dstbi__parse_huffman_block(_m3dstbi__zbuf *a) +{ + char *zout = a->zout; + for(;;) { + int z = _m3dstbi__zhuffman_decode(a, &a->z_length); + if (z < 256) { + if (z < 0) return _m3dstbi__err("bad huffman code","Corrupt PNG"); + if (zout >= a->zout_end) { + if (!_m3dstbi__zexpand(a, zout, 1)) return 0; + zout = a->zout; + } + *zout++ = (char) z; + } else { + unsigned char *p; + int len,dist; + if (z == 256) { + a->zout = zout; + return 1; + } + z -= 257; + len = _m3dstbi__zlength_base[z]; + if (_m3dstbi__zlength_extra[z]) len += _m3dstbi__zreceive(a, _m3dstbi__zlength_extra[z]); + z = _m3dstbi__zhuffman_decode(a, &a->z_distance); + if (z < 0) return _m3dstbi__err("bad huffman code","Corrupt PNG"); + dist = _m3dstbi__zdist_base[z]; + if (_m3dstbi__zdist_extra[z]) dist += _m3dstbi__zreceive(a, _m3dstbi__zdist_extra[z]); + if (zout - a->zout_start < dist) return _m3dstbi__err("bad dist","Corrupt PNG"); + if (zout + len > a->zout_end) { + if (!_m3dstbi__zexpand(a, zout, len)) return 0; + zout = a->zout; + } + p = (unsigned char *) (zout - dist); + if (dist == 1) { + unsigned char v = *p; + if (len) { do *zout++ = v; while (--len); } + } else { + if (len) { do *zout++ = *p++; while (--len); } + } + } + } +} + +static int _m3dstbi__compute_huffman_codes(_m3dstbi__zbuf *a) +{ + static unsigned char length_dezigzag[19] = { 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15 }; + _m3dstbi__zhuffman z_codelength; + unsigned char lencodes[286+32+137]; + unsigned char codelength_sizes[19]; + int i,n; + + int hlit = _m3dstbi__zreceive(a,5) + 257; + int hdist = _m3dstbi__zreceive(a,5) + 1; + int hclen = _m3dstbi__zreceive(a,4) + 4; + int ntot = hlit + hdist; + + memset(codelength_sizes, 0, sizeof(codelength_sizes)); + for (i=0; i < hclen; ++i) { + int s = _m3dstbi__zreceive(a,3); + codelength_sizes[length_dezigzag[i]] = (unsigned char) s; + } + if (!_m3dstbi__zbuild_huffman(&z_codelength, codelength_sizes, 19)) return 0; + + n = 0; + while (n < ntot) { + int c = _m3dstbi__zhuffman_decode(a, &z_codelength); + if (c < 0 || c >= 19) return _m3dstbi__err("bad codelengths", "Corrupt PNG"); + if (c < 16) + lencodes[n++] = (unsigned char) c; + else { + unsigned char fill = 0; + if (c == 16) { + c = _m3dstbi__zreceive(a,2)+3; + if (n == 0) return _m3dstbi__err("bad codelengths", "Corrupt PNG"); + fill = lencodes[n-1]; + } else if (c == 17) + c = _m3dstbi__zreceive(a,3)+3; + else { + STBI_ASSERT(c == 18); + c = _m3dstbi__zreceive(a,7)+11; + } + if (ntot - n < c) return _m3dstbi__err("bad codelengths", "Corrupt PNG"); + memset(lencodes+n, fill, c); + n += c; + } + } + if (n != ntot) return _m3dstbi__err("bad codelengths","Corrupt PNG"); + if (!_m3dstbi__zbuild_huffman(&a->z_length, lencodes, hlit)) return 0; + if (!_m3dstbi__zbuild_huffman(&a->z_distance, lencodes+hlit, hdist)) return 0; + return 1; +} + +_inline static int _m3dstbi__parse_uncompressed_block(_m3dstbi__zbuf *a) +{ + unsigned char header[4]; + int len,nlen,k; + if (a->num_bits & 7) + _m3dstbi__zreceive(a, a->num_bits & 7); + k = 0; + while (a->num_bits > 0) { + header[k++] = (unsigned char) (a->code_buffer & 255); + a->code_buffer >>= 8; + a->num_bits -= 8; + } + STBI_ASSERT(a->num_bits == 0); + while (k < 4) + header[k++] = _m3dstbi__zget8(a); + len = header[1] * 256 + header[0]; + nlen = header[3] * 256 + header[2]; + if (nlen != (len ^ 0xffff)) return _m3dstbi__err("zlib corrupt","Corrupt PNG"); + if (a->zbuffer + len > a->zbuffer_end) return _m3dstbi__err("read past buffer","Corrupt PNG"); + if (a->zout + len > a->zout_end) + if (!_m3dstbi__zexpand(a, a->zout, len)) return 0; + memcpy(a->zout, a->zbuffer, len); + a->zbuffer += len; + a->zout += len; + return 1; +} + +static int _m3dstbi__parse_zlib_header(_m3dstbi__zbuf *a) +{ + int cmf = _m3dstbi__zget8(a); + int cm = cmf & 15; + /* int cinfo = cmf >> 4; */ + int flg = _m3dstbi__zget8(a); + if ((cmf*256+flg) % 31 != 0) return _m3dstbi__err("bad zlib header","Corrupt PNG"); + if (flg & 32) return _m3dstbi__err("no preset dict","Corrupt PNG"); + if (cm != 8) return _m3dstbi__err("bad compression","Corrupt PNG"); + return 1; +} + +static unsigned char _m3dstbi__zdefault_length[288], _m3dstbi__zdefault_distance[32]; +static void _m3dstbi__init_zdefaults(void) +{ + int i; + for (i=0; i <= 143; ++i) _m3dstbi__zdefault_length[i] = 8; + for ( ; i <= 255; ++i) _m3dstbi__zdefault_length[i] = 9; + for ( ; i <= 279; ++i) _m3dstbi__zdefault_length[i] = 7; + for ( ; i <= 287; ++i) _m3dstbi__zdefault_length[i] = 8; + + for (i=0; i <= 31; ++i) _m3dstbi__zdefault_distance[i] = 5; +} + +static int _m3dstbi__parse_zlib(_m3dstbi__zbuf *a, int parse_header) +{ + int final, type; + if (parse_header) + if (!_m3dstbi__parse_zlib_header(a)) return 0; + a->num_bits = 0; + a->code_buffer = 0; + do { + final = _m3dstbi__zreceive(a,1); + type = _m3dstbi__zreceive(a,2); + if (type == 0) { + if (!_m3dstbi__parse_uncompressed_block(a)) return 0; + } else if (type == 3) { + return 0; + } else { + if (type == 1) { + if (!_m3dstbi__zbuild_huffman(&a->z_length , _m3dstbi__zdefault_length , 288)) return 0; + if (!_m3dstbi__zbuild_huffman(&a->z_distance, _m3dstbi__zdefault_distance, 32)) return 0; + } else { + if (!_m3dstbi__compute_huffman_codes(a)) return 0; + } + if (!_m3dstbi__parse_huffman_block(a)) return 0; + } + } while (!final); + return 1; +} + +static int _m3dstbi__do_zlib(_m3dstbi__zbuf *a, char *obuf, int olen, int exp, int parse_header) +{ + a->zout_start = obuf; + a->zout = obuf; + a->zout_end = obuf + olen; + a->z_expandable = exp; + _m3dstbi__init_zdefaults(); + return _m3dstbi__parse_zlib(a, parse_header); +} + +char *_m3dstbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header) +{ + _m3dstbi__zbuf a; + char *p = (char *) _m3dstbi__malloc(initial_size); + if (p == NULL) return NULL; + a.zbuffer = (unsigned char *) buffer; + a.zbuffer_end = (unsigned char *) buffer + len; + if (_m3dstbi__do_zlib(&a, p, initial_size, 1, parse_header)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + STBI_FREE(a.zout_start); + return NULL; + } +} + +typedef struct +{ + _m3dstbi__uint32 length; + _m3dstbi__uint32 type; +} _m3dstbi__pngchunk; + +static _m3dstbi__pngchunk _m3dstbi__get_chunk_header(_m3dstbi__context *s) +{ + _m3dstbi__pngchunk c; + c.length = _m3dstbi__get32be(s); + c.type = _m3dstbi__get32be(s); + return c; +} + +_inline static int _m3dstbi__check_png_header(_m3dstbi__context *s) +{ + static unsigned char png_sig[8] = { 137,80,78,71,13,10,26,10 }; + int i; + for (i=0; i < 8; ++i) + if (_m3dstbi__get8(s) != png_sig[i]) return _m3dstbi__err("bad png sig","Not a PNG"); + return 1; +} + +typedef struct +{ + _m3dstbi__context *s; + unsigned char *idata, *expanded, *out; + int depth; +} _m3dstbi__png; + + +enum { + STBI__F_none=0, + STBI__F_sub=1, + STBI__F_up=2, + STBI__F_avg=3, + STBI__F_paeth=4, + STBI__F_avg_first, + STBI__F_paeth_first +}; + +static unsigned char first_row_filter[5] = +{ + STBI__F_none, + STBI__F_sub, + STBI__F_none, + STBI__F_avg_first, + STBI__F_paeth_first +}; + +static int _m3dstbi__paeth(int a, int b, int c) +{ + int p = a + b - c; + int pa = abs(p-a); + int pb = abs(p-b); + int pc = abs(p-c); + if (pa <= pb && pa <= pc) return a; + if (pb <= pc) return b; + return c; +} + +static unsigned char _m3dstbi__depth_scale_table[9] = { 0, 0xff, 0x55, 0, 0x11, 0,0,0, 0x01 }; + +static int _m3dstbi__create_png_image_raw(_m3dstbi__png *a, unsigned char *raw, _m3dstbi__uint32 raw_len, int out_n, _m3dstbi__uint32 x, _m3dstbi__uint32 y, int depth, int color) +{ + int bytes = (depth == 16? 2 : 1); + _m3dstbi__context *s = a->s; + _m3dstbi__uint32 i,j,stride = x*out_n*bytes; + _m3dstbi__uint32 img_len, img_width_bytes; + int k; + int img_n = s->img_n; + + int output_bytes = out_n*bytes; + int filter_bytes = img_n*bytes; + int width = x; + + STBI_ASSERT(out_n == s->img_n || out_n == s->img_n+1); + a->out = (unsigned char *) _m3dstbi__malloc_mad3(x, y, output_bytes, 0); + if (!a->out) return _m3dstbi__err("outofmem", "Out of memory"); + + if (!_m3dstbi__mad3sizes_valid(img_n, x, depth, 7)) return _m3dstbi__err("too large", "Corrupt PNG"); + img_width_bytes = (((img_n * x * depth) + 7) >> 3); + img_len = (img_width_bytes + 1) * y; + if (s->img_x == x && s->img_y == y) { + if (raw_len != img_len) return _m3dstbi__err("not enough pixels","Corrupt PNG"); + } else { + if (raw_len < img_len) return _m3dstbi__err("not enough pixels","Corrupt PNG"); + } + + for (j=0; j < y; ++j) { + unsigned char *cur = a->out + stride*j; + unsigned char *prior = cur - stride; + int filter = *raw++; + + if (filter > 4) + return _m3dstbi__err("invalid filter","Corrupt PNG"); + + if (depth < 8) { + STBI_ASSERT(img_width_bytes <= x); + cur += x*out_n - img_width_bytes; + filter_bytes = 1; + width = img_width_bytes; + } + prior = cur - stride; + + if (j == 0) filter = first_row_filter[filter]; + + for (k=0; k < filter_bytes; ++k) { + switch (filter) { + case STBI__F_none : cur[k] = raw[k]; break; + case STBI__F_sub : cur[k] = raw[k]; break; + case STBI__F_up : cur[k] = STBI__BYTECAST(raw[k] + prior[k]); break; + case STBI__F_avg : cur[k] = STBI__BYTECAST(raw[k] + (prior[k]>>1)); break; + case STBI__F_paeth : cur[k] = STBI__BYTECAST(raw[k] + _m3dstbi__paeth(0,prior[k],0)); break; + case STBI__F_avg_first : cur[k] = raw[k]; break; + case STBI__F_paeth_first: cur[k] = raw[k]; break; + } + } + + if (depth == 8) { + if (img_n != out_n) + cur[img_n] = 255; + raw += img_n; + cur += out_n; + prior += out_n; + } else if (depth == 16) { + if (img_n != out_n) { + cur[filter_bytes] = 255; + cur[filter_bytes+1] = 255; + } + raw += filter_bytes; + cur += output_bytes; + prior += output_bytes; + } else { + raw += 1; + cur += 1; + prior += 1; + } + + if (depth < 8 || img_n == out_n) { + int nk = (width - 1)*filter_bytes; + #define STBI__CASE(f) \ + case f: \ + for (k=0; k < nk; ++k) + switch (filter) { + case STBI__F_none: memcpy(cur, raw, nk); break; + STBI__CASE(STBI__F_sub) { cur[k] = STBI__BYTECAST(raw[k] + cur[k-filter_bytes]); } break; + STBI__CASE(STBI__F_up) { cur[k] = STBI__BYTECAST(raw[k] + prior[k]); } break; + STBI__CASE(STBI__F_avg) { cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k-filter_bytes])>>1)); } break; + STBI__CASE(STBI__F_paeth) { cur[k] = STBI__BYTECAST(raw[k] + _m3dstbi__paeth(cur[k-filter_bytes],prior[k],prior[k-filter_bytes])); } break; + STBI__CASE(STBI__F_avg_first) { cur[k] = STBI__BYTECAST(raw[k] + (cur[k-filter_bytes] >> 1)); } break; + STBI__CASE(STBI__F_paeth_first) { cur[k] = STBI__BYTECAST(raw[k] + _m3dstbi__paeth(cur[k-filter_bytes],0,0)); } break; + } + #undef STBI__CASE + raw += nk; + } else { + STBI_ASSERT(img_n+1 == out_n); + #define STBI__CASE(f) \ + case f: \ + for (i=x-1; i >= 1; --i, cur[filter_bytes]=255,raw+=filter_bytes,cur+=output_bytes,prior+=output_bytes) \ + for (k=0; k < filter_bytes; ++k) + switch (filter) { + STBI__CASE(STBI__F_none) { cur[k] = raw[k]; } break; + STBI__CASE(STBI__F_sub) { cur[k] = STBI__BYTECAST(raw[k] + cur[k- output_bytes]); } break; + STBI__CASE(STBI__F_up) { cur[k] = STBI__BYTECAST(raw[k] + prior[k]); } break; + STBI__CASE(STBI__F_avg) { cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k- output_bytes])>>1)); } break; + STBI__CASE(STBI__F_paeth) { cur[k] = STBI__BYTECAST(raw[k] + _m3dstbi__paeth(cur[k- output_bytes],prior[k],prior[k- output_bytes])); } break; + STBI__CASE(STBI__F_avg_first) { cur[k] = STBI__BYTECAST(raw[k] + (cur[k- output_bytes] >> 1)); } break; + STBI__CASE(STBI__F_paeth_first) { cur[k] = STBI__BYTECAST(raw[k] + _m3dstbi__paeth(cur[k- output_bytes],0,0)); } break; + } + #undef STBI__CASE + + if (depth == 16) { + cur = a->out + stride*j; + for (i=0; i < x; ++i,cur+=output_bytes) { + cur[filter_bytes+1] = 255; + } + } + } + } + + if (depth < 8) { + for (j=0; j < y; ++j) { + unsigned char *cur = a->out + stride*j; + unsigned char *in = a->out + stride*j + x*out_n - img_width_bytes; + unsigned char scale = (color == 0) ? _m3dstbi__depth_scale_table[depth] : 1; + + if (depth == 4) { + for (k=x*img_n; k >= 2; k-=2, ++in) { + *cur++ = scale * ((*in >> 4) ); + *cur++ = scale * ((*in ) & 0x0f); + } + if (k > 0) *cur++ = scale * ((*in >> 4) ); + } else if (depth == 2) { + for (k=x*img_n; k >= 4; k-=4, ++in) { + *cur++ = scale * ((*in >> 6) ); + *cur++ = scale * ((*in >> 4) & 0x03); + *cur++ = scale * ((*in >> 2) & 0x03); + *cur++ = scale * ((*in ) & 0x03); + } + if (k > 0) *cur++ = scale * ((*in >> 6) ); + if (k > 1) *cur++ = scale * ((*in >> 4) & 0x03); + if (k > 2) *cur++ = scale * ((*in >> 2) & 0x03); + } else if (depth == 1) { + for (k=x*img_n; k >= 8; k-=8, ++in) { + *cur++ = scale * ((*in >> 7) ); + *cur++ = scale * ((*in >> 6) & 0x01); + *cur++ = scale * ((*in >> 5) & 0x01); + *cur++ = scale * ((*in >> 4) & 0x01); + *cur++ = scale * ((*in >> 3) & 0x01); + *cur++ = scale * ((*in >> 2) & 0x01); + *cur++ = scale * ((*in >> 1) & 0x01); + *cur++ = scale * ((*in ) & 0x01); + } + if (k > 0) *cur++ = scale * ((*in >> 7) ); + if (k > 1) *cur++ = scale * ((*in >> 6) & 0x01); + if (k > 2) *cur++ = scale * ((*in >> 5) & 0x01); + if (k > 3) *cur++ = scale * ((*in >> 4) & 0x01); + if (k > 4) *cur++ = scale * ((*in >> 3) & 0x01); + if (k > 5) *cur++ = scale * ((*in >> 2) & 0x01); + if (k > 6) *cur++ = scale * ((*in >> 1) & 0x01); + } + if (img_n != out_n) { + int q; + cur = a->out + stride*j; + if (img_n == 1) { + for (q=x-1; q >= 0; --q) { + cur[q*2+1] = 255; + cur[q*2+0] = cur[q]; + } + } else { + STBI_ASSERT(img_n == 3); + for (q=x-1; q >= 0; --q) { + cur[q*4+3] = 255; + cur[q*4+2] = cur[q*3+2]; + cur[q*4+1] = cur[q*3+1]; + cur[q*4+0] = cur[q*3+0]; + } + } + } + } + } else if (depth == 16) { + unsigned char *cur = a->out; + _m3dstbi__uint16 *cur16 = (_m3dstbi__uint16*)cur; + + for(i=0; i < x*y*out_n; ++i,cur16++,cur+=2) { + *cur16 = (cur[0] << 8) | cur[1]; + } + } + + return 1; +} + +static int _m3dstbi__create_png_image(_m3dstbi__png *a, unsigned char *image_data, _m3dstbi__uint32 image_data_len, int out_n, int depth, int color, int interlaced) +{ + int bytes = (depth == 16 ? 2 : 1); + int out_bytes = out_n * bytes; + unsigned char *final; + int p; + if (!interlaced) + return _m3dstbi__create_png_image_raw(a, image_data, image_data_len, out_n, a->s->img_x, a->s->img_y, depth, color); + + final = (unsigned char *) _m3dstbi__malloc_mad3(a->s->img_x, a->s->img_y, out_bytes, 0); + for (p=0; p < 7; ++p) { + int xorig[] = { 0,4,0,2,0,1,0 }; + int yorig[] = { 0,0,4,0,2,0,1 }; + int xspc[] = { 8,8,4,4,2,2,1 }; + int yspc[] = { 8,8,8,4,4,2,2 }; + int i,j,x,y; + x = (a->s->img_x - xorig[p] + xspc[p]-1) / xspc[p]; + y = (a->s->img_y - yorig[p] + yspc[p]-1) / yspc[p]; + if (x && y) { + _m3dstbi__uint32 img_len = ((((a->s->img_n * x * depth) + 7) >> 3) + 1) * y; + if (!_m3dstbi__create_png_image_raw(a, image_data, image_data_len, out_n, x, y, depth, color)) { + STBI_FREE(final); + return 0; + } + for (j=0; j < y; ++j) { + for (i=0; i < x; ++i) { + int out_y = j*yspc[p]+yorig[p]; + int out_x = i*xspc[p]+xorig[p]; + memcpy(final + out_y*a->s->img_x*out_bytes + out_x*out_bytes, + a->out + (j*x+i)*out_bytes, out_bytes); + } + } + STBI_FREE(a->out); + image_data += img_len; + image_data_len -= img_len; + } + } + a->out = final; + + return 1; +} + +static int _m3dstbi__compute_transparency(_m3dstbi__png *z, unsigned char tc[3], int out_n) +{ + _m3dstbi__context *s = z->s; + _m3dstbi__uint32 i, pixel_count = s->img_x * s->img_y; + unsigned char *p = z->out; + + STBI_ASSERT(out_n == 2 || out_n == 4); + + if (out_n == 2) { + for (i=0; i < pixel_count; ++i) { + p[1] = (p[0] == tc[0] ? 0 : 255); + p += 2; + } + } else { + for (i=0; i < pixel_count; ++i) { + if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) + p[3] = 0; + p += 4; + } + } + return 1; +} + +static int _m3dstbi__compute_transparency16(_m3dstbi__png *z, _m3dstbi__uint16 tc[3], int out_n) +{ + _m3dstbi__context *s = z->s; + _m3dstbi__uint32 i, pixel_count = s->img_x * s->img_y; + _m3dstbi__uint16 *p = (_m3dstbi__uint16*) z->out; + + STBI_ASSERT(out_n == 2 || out_n == 4); + + if (out_n == 2) { + for (i = 0; i < pixel_count; ++i) { + p[1] = (p[0] == tc[0] ? 0 : 65535); + p += 2; + } + } else { + for (i = 0; i < pixel_count; ++i) { + if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) + p[3] = 0; + p += 4; + } + } + return 1; +} + +static int _m3dstbi__expand_png_palette(_m3dstbi__png *a, unsigned char *palette, int len, int pal_img_n) +{ + _m3dstbi__uint32 i, pixel_count = a->s->img_x * a->s->img_y; + unsigned char *p, *temp_out, *orig = a->out; + + p = (unsigned char *) _m3dstbi__malloc_mad2(pixel_count, pal_img_n, 0); + if (p == NULL) return _m3dstbi__err("outofmem", "Out of memory"); + + temp_out = p; + + if (pal_img_n == 3) { + for (i=0; i < pixel_count; ++i) { + int n = orig[i]*4; + p[0] = palette[n ]; + p[1] = palette[n+1]; + p[2] = palette[n+2]; + p += 3; + } + } else { + for (i=0; i < pixel_count; ++i) { + int n = orig[i]*4; + p[0] = palette[n ]; + p[1] = palette[n+1]; + p[2] = palette[n+2]; + p[3] = palette[n+3]; + p += 4; + } + } + STBI_FREE(a->out); + a->out = temp_out; + + STBI_NOTUSED(len); + + return 1; +} + +#define STBI__PNG_TYPE(a,b,c,d) (((unsigned) (a) << 24) + ((unsigned) (b) << 16) + ((unsigned) (c) << 8) + (unsigned) (d)) + +static int _m3dstbi__parse_png_file(_m3dstbi__png *z, int scan, int req_comp) +{ + unsigned char palette[1024], pal_img_n=0; + unsigned char has_trans=0, tc[3]; + _m3dstbi__uint16 tc16[3]; + _m3dstbi__uint32 ioff=0, idata_limit=0, i, pal_len=0; + int first=1,k,interlace=0, color=0; + _m3dstbi__context *s = z->s; + + z->expanded = NULL; + z->idata = NULL; + z->out = NULL; + + if (!_m3dstbi__check_png_header(s)) return 0; + + if (scan == STBI__SCAN_type) return 1; + + for (;;) { + _m3dstbi__pngchunk c = _m3dstbi__get_chunk_header(s); + switch (c.type) { + case STBI__PNG_TYPE('C','g','B','I'): + _m3dstbi__skip(s, c.length); + break; + case STBI__PNG_TYPE('I','H','D','R'): { + int comp,filter; + if (!first) return _m3dstbi__err("multiple IHDR","Corrupt PNG"); + first = 0; + if (c.length != 13) return _m3dstbi__err("bad IHDR len","Corrupt PNG"); + s->img_x = _m3dstbi__get32be(s); if (s->img_x > (1 << 24)) return _m3dstbi__err("too large","Very large image (corrupt?)"); + s->img_y = _m3dstbi__get32be(s); if (s->img_y > (1 << 24)) return _m3dstbi__err("too large","Very large image (corrupt?)"); + z->depth = _m3dstbi__get8(s); if (z->depth != 1 && z->depth != 2 && z->depth != 4 && z->depth != 8 && z->depth != 16) return _m3dstbi__err("1/2/4/8/16-bit only","PNG not supported: 1/2/4/8/16-bit only"); + color = _m3dstbi__get8(s); if (color > 6) return _m3dstbi__err("bad ctype","Corrupt PNG"); + if (color == 3 && z->depth == 16) return _m3dstbi__err("bad ctype","Corrupt PNG"); + if (color == 3) pal_img_n = 3; else if (color & 1) return _m3dstbi__err("bad ctype","Corrupt PNG"); + comp = _m3dstbi__get8(s); if (comp) return _m3dstbi__err("bad comp method","Corrupt PNG"); + filter= _m3dstbi__get8(s); if (filter) return _m3dstbi__err("bad filter method","Corrupt PNG"); + interlace = _m3dstbi__get8(s); if (interlace>1) return _m3dstbi__err("bad interlace method","Corrupt PNG"); + if (!s->img_x || !s->img_y) return _m3dstbi__err("0-pixel image","Corrupt PNG"); + if (!pal_img_n) { + s->img_n = (color & 2 ? 3 : 1) + (color & 4 ? 1 : 0); + if ((1 << 30) / s->img_x / s->img_n < s->img_y) return _m3dstbi__err("too large", "Image too large to decode"); + if (scan == STBI__SCAN_header) return 1; + } else { + s->img_n = 1; + if ((1 << 30) / s->img_x / 4 < s->img_y) return _m3dstbi__err("too large","Corrupt PNG"); + } + break; + } + + case STBI__PNG_TYPE('P','L','T','E'): { + if (first) return _m3dstbi__err("first not IHDR", "Corrupt PNG"); + if (c.length > 256*3) return _m3dstbi__err("invalid PLTE","Corrupt PNG"); + pal_len = c.length / 3; + if (pal_len * 3 != c.length) return _m3dstbi__err("invalid PLTE","Corrupt PNG"); + for (i=0; i < pal_len; ++i) { + palette[i*4+0] = _m3dstbi__get8(s); + palette[i*4+1] = _m3dstbi__get8(s); + palette[i*4+2] = _m3dstbi__get8(s); + palette[i*4+3] = 255; + } + break; + } + + case STBI__PNG_TYPE('t','R','N','S'): { + if (first) return _m3dstbi__err("first not IHDR", "Corrupt PNG"); + if (z->idata) return _m3dstbi__err("tRNS after IDAT","Corrupt PNG"); + if (pal_img_n) { + if (scan == STBI__SCAN_header) { s->img_n = 4; return 1; } + if (pal_len == 0) return _m3dstbi__err("tRNS before PLTE","Corrupt PNG"); + if (c.length > pal_len) return _m3dstbi__err("bad tRNS len","Corrupt PNG"); + pal_img_n = 4; + for (i=0; i < c.length; ++i) + palette[i*4+3] = _m3dstbi__get8(s); + } else { + if (!(s->img_n & 1)) return _m3dstbi__err("tRNS with alpha","Corrupt PNG"); + if (c.length != (_m3dstbi__uint32) s->img_n*2) return _m3dstbi__err("bad tRNS len","Corrupt PNG"); + has_trans = 1; + if (z->depth == 16) { + for (k = 0; k < s->img_n; ++k) tc16[k] = (_m3dstbi__uint16)_m3dstbi__get16be(s); + } else { + for (k = 0; k < s->img_n; ++k) tc[k] = (unsigned char)(_m3dstbi__get16be(s) & 255) * _m3dstbi__depth_scale_table[z->depth]; + } + } + break; + } + + case STBI__PNG_TYPE('I','D','A','T'): { + if (first) return _m3dstbi__err("first not IHDR", "Corrupt PNG"); + if (pal_img_n && !pal_len) return _m3dstbi__err("no PLTE","Corrupt PNG"); + if (scan == STBI__SCAN_header) { s->img_n = pal_img_n; return 1; } + if ((int)(ioff + c.length) < (int)ioff) return 0; + if (ioff + c.length > idata_limit) { + _m3dstbi__uint32 idata_limit_old = idata_limit; + unsigned char *p; + if (idata_limit == 0) idata_limit = c.length > 4096 ? c.length : 4096; + while (ioff + c.length > idata_limit) + idata_limit *= 2; + STBI_NOTUSED(idata_limit_old); + p = (unsigned char *) STBI_REALLOC_SIZED(z->idata, idata_limit_old, idata_limit); if (p == NULL) return _m3dstbi__err("outofmem", "Out of memory"); + z->idata = p; + } + if (!_m3dstbi__getn(s, z->idata+ioff,c.length)) return _m3dstbi__err("outofdata","Corrupt PNG"); + ioff += c.length; + break; + } + + case STBI__PNG_TYPE('I','E','N','D'): { + _m3dstbi__uint32 raw_len, bpl; + if (first) return _m3dstbi__err("first not IHDR", "Corrupt PNG"); + if (scan != STBI__SCAN_load) return 1; + if (z->idata == NULL) return _m3dstbi__err("no IDAT","Corrupt PNG"); + bpl = (s->img_x * z->depth + 7) / 8; + raw_len = bpl * s->img_y * s->img_n /* pixels */ + s->img_y /* filter mode per row */; + z->expanded = (unsigned char *) _m3dstbi_zlib_decode_malloc_guesssize_headerflag((char *) z->idata, ioff, raw_len, (int *) &raw_len, 1); + if (z->expanded == NULL) return 0; + STBI_FREE(z->idata); z->idata = NULL; + if ((req_comp == s->img_n+1 && req_comp != 3 && !pal_img_n) || has_trans) + s->img_out_n = s->img_n+1; + else + s->img_out_n = s->img_n; + if (!_m3dstbi__create_png_image(z, z->expanded, raw_len, s->img_out_n, z->depth, color, interlace)) return 0; + if (has_trans) { + if (z->depth == 16) { + if (!_m3dstbi__compute_transparency16(z, tc16, s->img_out_n)) return 0; + } else { + if (!_m3dstbi__compute_transparency(z, tc, s->img_out_n)) return 0; + } + } + if (pal_img_n) { + s->img_n = pal_img_n; + s->img_out_n = pal_img_n; + if (req_comp >= 3) s->img_out_n = req_comp; + if (!_m3dstbi__expand_png_palette(z, palette, pal_len, s->img_out_n)) + return 0; + } else if (has_trans) { + ++s->img_n; + } + STBI_FREE(z->expanded); z->expanded = NULL; + return 1; + } + + default: + if (first) return _m3dstbi__err("first not IHDR", "Corrupt PNG"); + if ((c.type & (1 << 29)) == 0) { + return _m3dstbi__err("invalid_chunk", "PNG not supported: unknown PNG chunk type"); + } + _m3dstbi__skip(s, c.length); + break; + } + _m3dstbi__get32be(s); + } +} + +static void *_m3dstbi__do_png(_m3dstbi__png *p, int *x, int *y, int *n, int req_comp, _m3dstbi__result_info *ri) +{ + void *result=NULL; + if (req_comp < 0 || req_comp > 4) { _m3dstbi__err("bad req_comp", "Internal error"); return NULL; } + if (_m3dstbi__parse_png_file(p, STBI__SCAN_load, req_comp)) { + if (p->depth < 8) + ri->bits_per_channel = 8; + else + ri->bits_per_channel = p->depth; + result = p->out; + p->out = NULL; + if (req_comp && req_comp != p->s->img_out_n) { + if (ri->bits_per_channel == 8) + result = _m3dstbi__convert_format((unsigned char *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); + else + result = _m3dstbi__convert_format16((_m3dstbi__uint16 *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); + p->s->img_out_n = req_comp; + if (result == NULL) return result; + } + *x = p->s->img_x; + *y = p->s->img_y; + if (n) *n = p->s->img_n; + } + STBI_FREE(p->out); p->out = NULL; + STBI_FREE(p->expanded); p->expanded = NULL; + STBI_FREE(p->idata); p->idata = NULL; + + return result; +} + +static void *_m3dstbi__png_load(_m3dstbi__context *s, int *x, int *y, int *comp, int req_comp, _m3dstbi__result_info *ri) +{ + _m3dstbi__png p; + p.s = s; + return _m3dstbi__do_png(&p, x,y,comp,req_comp, ri); +} +#define stbi__context _m3dstbi__context +#define stbi__result_info _m3dstbi__result_info +#define stbi__png_load _m3dstbi__png_load +#define stbi_zlib_decode_malloc_guesssize_headerflag _m3dstbi_zlib_decode_malloc_guesssize_headerflag +#endif + +#if defined(M3D_EXPORTER) && !defined(INCLUDE_STB_IMAGE_WRITE_H) +/* zlib_compressor from + + stb_image_write - v1.13 - public domain - http://nothings.org/stb/stb_image_write.h +*/ +typedef unsigned char _m3dstbiw__uc; +typedef unsigned short _m3dstbiw__us; + +typedef uint16_t _m3dstbiw__uint16; +typedef int16_t _m3dstbiw__int16; +typedef uint32_t _m3dstbiw__uint32; +typedef int32_t _m3dstbiw__int32; + +#define STBIW_MALLOC(s) M3D_MALLOC(s) +#define STBIW_REALLOC(p,ns) M3D_REALLOC(p,ns) +#define STBIW_REALLOC_SIZED(p,oldsz,newsz) STBIW_REALLOC(p,newsz) +#define STBIW_FREE M3D_FREE +#define STBIW_MEMMOVE memmove +#define STBIW_UCHAR (uint8_t) +#define STBIW_ASSERT(x) +#define _m3dstbiw___sbraw(a) ((int *) (a) - 2) +#define _m3dstbiw___sbm(a) _m3dstbiw___sbraw(a)[0] +#define _m3dstbiw___sbn(a) _m3dstbiw___sbraw(a)[1] + +#define _m3dstbiw___sbneedgrow(a,n) ((a)==0 || _m3dstbiw___sbn(a)+n >= _m3dstbiw___sbm(a)) +#define _m3dstbiw___sbmaybegrow(a,n) (_m3dstbiw___sbneedgrow(a,(n)) ? _m3dstbiw___sbgrow(a,n) : 0) +#define _m3dstbiw___sbgrow(a,n) _m3dstbiw___sbgrowf((void **) &(a), (n), sizeof(*(a))) + +#define _m3dstbiw___sbpush(a, v) (_m3dstbiw___sbmaybegrow(a,1), (a)[_m3dstbiw___sbn(a)++] = (v)) +#define _m3dstbiw___sbcount(a) ((a) ? _m3dstbiw___sbn(a) : 0) +#define _m3dstbiw___sbfree(a) ((a) ? STBIW_FREE(_m3dstbiw___sbraw(a)),0 : 0) + +static void *_m3dstbiw___sbgrowf(void **arr, int increment, int itemsize) +{ + int m = *arr ? 2*_m3dstbiw___sbm(*arr)+increment : increment+1; + void *p = STBIW_REALLOC_SIZED(*arr ? _m3dstbiw___sbraw(*arr) : 0, *arr ? (_m3dstbiw___sbm(*arr)*itemsize + sizeof(int)*2) : 0, itemsize * m + sizeof(int)*2); + STBIW_ASSERT(p); + if (p) { + if (!*arr) ((int *) p)[1] = 0; + *arr = (void *) ((int *) p + 2); + _m3dstbiw___sbm(*arr) = m; + } + return *arr; +} + +static unsigned char *_m3dstbiw___zlib_flushf(unsigned char *data, unsigned int *bitbuffer, int *bitcount) +{ + while (*bitcount >= 8) { + _m3dstbiw___sbpush(data, STBIW_UCHAR(*bitbuffer)); + *bitbuffer >>= 8; + *bitcount -= 8; + } + return data; +} + +static int _m3dstbiw___zlib_bitrev(int code, int codebits) +{ + int res=0; + while (codebits--) { + res = (res << 1) | (code & 1); + code >>= 1; + } + return res; +} + +static unsigned int _m3dstbiw___zlib_countm(unsigned char *a, unsigned char *b, int limit) +{ + int i; + for (i=0; i < limit && i < 258; ++i) + if (a[i] != b[i]) break; + return i; +} + +static unsigned int _m3dstbiw___zhash(unsigned char *data) +{ + _m3dstbiw__uint32 hash = data[0] + (data[1] << 8) + (data[2] << 16); + hash ^= hash << 3; + hash += hash >> 5; + hash ^= hash << 4; + hash += hash >> 17; + hash ^= hash << 25; + hash += hash >> 6; + return hash; +} + +#define _m3dstbiw___zlib_flush() (out = _m3dstbiw___zlib_flushf(out, &bitbuf, &bitcount)) +#define _m3dstbiw___zlib_add(code,codebits) \ + (bitbuf |= (code) << bitcount, bitcount += (codebits), _m3dstbiw___zlib_flush()) +#define _m3dstbiw___zlib_huffa(b,c) _m3dstbiw___zlib_add(_m3dstbiw___zlib_bitrev(b,c),c) +#define _m3dstbiw___zlib_huff1(n) _m3dstbiw___zlib_huffa(0x30 + (n), 8) +#define _m3dstbiw___zlib_huff2(n) _m3dstbiw___zlib_huffa(0x190 + (n)-144, 9) +#define _m3dstbiw___zlib_huff3(n) _m3dstbiw___zlib_huffa(0 + (n)-256,7) +#define _m3dstbiw___zlib_huff4(n) _m3dstbiw___zlib_huffa(0xc0 + (n)-280,8) +#define _m3dstbiw___zlib_huff(n) ((n) <= 143 ? _m3dstbiw___zlib_huff1(n) : (n) <= 255 ? _m3dstbiw___zlib_huff2(n) : (n) <= 279 ? _m3dstbiw___zlib_huff3(n) : _m3dstbiw___zlib_huff4(n)) +#define _m3dstbiw___zlib_huffb(n) ((n) <= 143 ? _m3dstbiw___zlib_huff1(n) : _m3dstbiw___zlib_huff2(n)) + +#define _m3dstbiw___ZHASH 16384 + +unsigned char * _m3dstbi_zlib_compress(unsigned char *data, int data_len, int *out_len, int quality) +{ + static unsigned short lengthc[] = { 3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258, 259 }; + static unsigned char lengtheb[]= { 0,0,0,0,0,0,0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0 }; + static unsigned short distc[] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577, 32768 }; + static unsigned char disteb[] = { 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13 }; + unsigned int bitbuf=0; + int i,j, bitcount=0; + unsigned char *out = NULL; + unsigned char ***hash_table = (unsigned char***) STBIW_MALLOC(_m3dstbiw___ZHASH * sizeof(char**)); + if (hash_table == NULL) + return NULL; + if (quality < 5) quality = 5; + + _m3dstbiw___sbpush(out, 0x78); + _m3dstbiw___sbpush(out, 0x5e); + _m3dstbiw___zlib_add(1,1); + _m3dstbiw___zlib_add(1,2); + + for (i=0; i < _m3dstbiw___ZHASH; ++i) + hash_table[i] = NULL; + + i=0; + while (i < data_len-3) { + int h = _m3dstbiw___zhash(data+i)&(_m3dstbiw___ZHASH-1), best=3; + unsigned char *bestloc = 0; + unsigned char **hlist = hash_table[h]; + int n = _m3dstbiw___sbcount(hlist); + for (j=0; j < n; ++j) { + if (hlist[j]-data > i-32768) { + int d = _m3dstbiw___zlib_countm(hlist[j], data+i, data_len-i); + if (d >= best) best=d,bestloc=hlist[j]; + } + } + if (hash_table[h] && _m3dstbiw___sbn(hash_table[h]) == 2*quality) { + STBIW_MEMMOVE(hash_table[h], hash_table[h]+quality, sizeof(hash_table[h][0])*quality); + _m3dstbiw___sbn(hash_table[h]) = quality; + } + _m3dstbiw___sbpush(hash_table[h],data+i); + + if (bestloc) { + h = _m3dstbiw___zhash(data+i+1)&(_m3dstbiw___ZHASH-1); + hlist = hash_table[h]; + n = _m3dstbiw___sbcount(hlist); + for (j=0; j < n; ++j) { + if (hlist[j]-data > i-32767) { + int e = _m3dstbiw___zlib_countm(hlist[j], data+i+1, data_len-i-1); + if (e > best) { + bestloc = NULL; + break; + } + } + } + } + + if (bestloc) { + int d = (int) (data+i - bestloc); + STBIW_ASSERT(d <= 32767 && best <= 258); + for (j=0; best > lengthc[j+1]-1; ++j); + _m3dstbiw___zlib_huff(j+257); + if (lengtheb[j]) _m3dstbiw___zlib_add(best - lengthc[j], lengtheb[j]); + for (j=0; d > distc[j+1]-1; ++j); + _m3dstbiw___zlib_add(_m3dstbiw___zlib_bitrev(j,5),5); + if (disteb[j]) _m3dstbiw___zlib_add(d - distc[j], disteb[j]); + i += best; + } else { + _m3dstbiw___zlib_huffb(data[i]); + ++i; + } + } + for (;i < data_len; ++i) + _m3dstbiw___zlib_huffb(data[i]); + _m3dstbiw___zlib_huff(256); + while (bitcount) + _m3dstbiw___zlib_add(0,1); + + for (i=0; i < _m3dstbiw___ZHASH; ++i) + (void) _m3dstbiw___sbfree(hash_table[i]); + STBIW_FREE(hash_table); + + { + unsigned int s1=1, s2=0; + int blocklen = (int) (data_len % 5552); + j=0; + while (j < data_len) { + for (i=0; i < blocklen; ++i) s1 += data[j+i], s2 += s1; + s1 %= 65521, s2 %= 65521; + j += blocklen; + blocklen = 5552; + } + _m3dstbiw___sbpush(out, STBIW_UCHAR(s2 >> 8)); + _m3dstbiw___sbpush(out, STBIW_UCHAR(s2)); + _m3dstbiw___sbpush(out, STBIW_UCHAR(s1 >> 8)); + _m3dstbiw___sbpush(out, STBIW_UCHAR(s1)); + } + *out_len = _m3dstbiw___sbn(out); + STBIW_MEMMOVE(_m3dstbiw___sbraw(out), out, *out_len); + return (unsigned char *) _m3dstbiw___sbraw(out); +} +#define stbi_zlib_compress _m3dstbi_zlib_compress +#else +unsigned char * _m3dstbi_zlib_compress(unsigned char *data, int data_len, int *out_len, int quality); +#endif + +#define M3D_CHUNKMAGIC(m, a,b,c,d) ((m)[0]==(a) && (m)[1]==(b) && (m)[2]==(c) && (m)[3]==(d)) + +#ifdef M3D_ASCII +#include /* get sprintf */ +#include /* sprintf and strtod cares about number locale */ +#endif +#ifdef M3D_PROFILING +#include +#endif + +#if !defined(M3D_NOIMPORTER) && defined(M3D_ASCII) +/* helper functions for the ASCII parser */ +static char *_m3d_findarg(char *s) { + while(s && *s && *s != ' ' && *s != '\t' && *s != '\r' && *s != '\n') s++; + while(s && *s && (*s == ' ' || *s == '\t')) s++; + return s; +} +static char *_m3d_findnl(char *s) { + while(s && *s && *s != '\r' && *s != '\n') s++; + if(*s == '\r') s++; + if(*s == '\n') s++; + return s; +} +static char *_m3d_gethex(char *s, uint32_t *ret) +{ + if(*s == '#') s++; + *ret = 0; + for(; *s; s++) { + if(*s >= '0' && *s <= '9') { *ret <<= 4; *ret += (uint32_t)(*s-'0'); } + else if(*s >= 'a' && *s <= 'f') { *ret <<= 4; *ret += (uint32_t)(*s-'a'+10); } + else if(*s >= 'A' && *s <= 'F') { *ret <<= 4; *ret += (uint32_t)(*s-'A'+10); } + else break; + } + return _m3d_findarg(s); +} +static char *_m3d_getint(char *s, uint32_t *ret) +{ + char *e = s; + if(!s || !*s || *s == '\r' || *s == '\n') return s; + for(; *e >= '0' && *e <= '9'; e++); + *ret = atoi(s); + return e; +} +static char *_m3d_getfloat(char *s, M3D_FLOAT *ret) +{ + char *e = s; + if(!s || !*s || *s == '\r' || *s == '\n') return s; + for(; *e == '-' || *e == '+' || *e == '.' || (*e >= '0' && *e <= '9') || *e == 'e' || *e == 'E'; e++); + *ret = (M3D_FLOAT)strtod(s, NULL); + return _m3d_findarg(e); +} +#endif +#if !defined(M3D_NODUP) && (!defined(M3D_NOIMPORTER) || defined(M3D_ASCII) || defined(M3D_EXPORTER)) +/* helper function to create safe strings */ +char *_m3d_safestr(char *in, int morelines) +{ + char *out, *o, *i = in; + int l; + if(!in || !*in) { + out = (char*)M3D_MALLOC(1); + if(!out) return NULL; + out[0] =0; + } else { + for(o = in, l = 0; *o && ((morelines & 1) || (*o != '\r' && *o != '\n')) && l < 256; o++, l++); + out = o = (char*)M3D_MALLOC(l+1); + if(!out) return NULL; + while(*i == ' ' || *i == '\t' || *i == '\r' || (morelines && *i == '\n')) i++; + for(; *i && (morelines || (*i != '\r' && *i != '\n')); i++) { + if(*i == '\r') continue; + if(*i == '\n') { + if(morelines >= 3 && o > out && *(o-1) == '\n') break; + if(i > in && *(i-1) == '\n') continue; + if(morelines & 1) { + if(morelines == 1) *o++ = '\r'; + *o++ = '\n'; + } else + break; + } else + if(*i == ' ' || *i == '\t') { + *o++ = morelines? ' ' : '_'; + } else + *o++ = !morelines && (*i == '/' || *i == '\\') ? '_' : *i; + } + for(; o > out && (*(o-1) == ' ' || *(o-1) == '\t' || *(o-1) == '\r' || *(o-1) == '\n'); o--); + *o = 0; + out = (char*)M3D_REALLOC(out, (uintptr_t)o - (uintptr_t)out + 1); + } + return out; +} +#endif +#ifndef M3D_NOIMPORTER +/* helper function to load and decode/generate a texture */ +M3D_INDEX _m3d_gettx(m3d_t *model, m3dread_t readfilecb, m3dfree_t freecb, char *fn) +{ + unsigned int i, len = 0; + unsigned char *buff = NULL; + char *fn2; +#ifdef STBI__PNG_TYPE + unsigned int w, h; + stbi__context s; + stbi__result_info ri; +#endif + + /* do we have loaded this texture already? */ + for(i = 0; i < model->numtexture; i++) + if(!strcmp(fn, model->texture[i].name)) return i; + /* see if it's inlined in the model */ + if(model->inlined) { + for(i = 0; i < model->numinlined; i++) + if(!strcmp(fn, model->inlined[i].name)) { + buff = model->inlined[i].data; + len = model->inlined[i].length; + freecb = NULL; + break; + } + } + /* try to load from external source */ + if(!buff && readfilecb) { + i = (unsigned int)strlen(fn); + if(i < 5 || fn[i - 4] != '.') { + fn2 = (char*)M3D_MALLOC(i + 5); + if(!fn2) { model->errcode = M3D_ERR_ALLOC; return M3D_UNDEF; } + memcpy(fn2, fn, i); + memcpy(fn2+i, ".png", 5); + buff = (*readfilecb)(fn2, &len); + M3D_FREE(fn2); + } + if(!buff) { + buff = (*readfilecb)(fn, &len); + if(!buff) return M3D_UNDEF; + } + } + /* add to textures array */ + i = model->numtexture++; + model->texture = (m3dtx_t*)M3D_REALLOC(model->texture, model->numtexture * sizeof(m3dtx_t)); + if(!model->texture) { + if(buff && freecb) (*freecb)(buff); + model->errcode = M3D_ERR_ALLOC; + return M3D_UNDEF; + } + model->texture[i].name = fn; + model->texture[i].w = model->texture[i].h = 0; model->texture[i].d = NULL; + if(buff) { + if(buff[0] == 0x89 && buff[1] == 'P' && buff[2] == 'N' && buff[3] == 'G') { +#ifdef STBI__PNG_TYPE + s.read_from_callbacks = 0; + s.img_buffer = s.img_buffer_original = (unsigned char *) buff; + s.img_buffer_end = s.img_buffer_original_end = (unsigned char *) buff+len; + /* don't use model->texture[i].w directly, it's a uint16_t */ + w = h = len = 0; + ri.bits_per_channel = 8; + model->texture[i].d = (uint8_t*)stbi__png_load(&s, (int*)&w, (int*)&h, (int*)&len, 0, &ri); + model->texture[i].w = w; + model->texture[i].h = h; + model->texture[i].f = (uint8_t)len; +#endif + } else { +#ifdef M3D_TX_INTERP + if((model->errcode = M3D_TX_INTERP(fn, buff, len, &model->texture[i])) != M3D_SUCCESS) { + M3D_LOG("Unable to generate texture"); + M3D_LOG(fn); + } +#else + M3D_LOG("Unimplemented interpreter"); + M3D_LOG(fn); +#endif + } + if(freecb) (*freecb)(buff); + } + if(!model->texture[i].d) + model->errcode = M3D_ERR_UNKIMG; + return i; +} + +/* helper function to load and generate a procedural surface */ +void _m3d_getpr(m3d_t *model, _unused m3dread_t readfilecb, _unused m3dfree_t freecb, _unused char *fn) +{ +#ifdef M3D_PR_INTERP + unsigned int i, len = 0; + unsigned char *buff = readfilecb ? (*readfilecb)(fn, &len) : NULL; + + if(!buff && model->inlined) { + for(i = 0; i < model->numinlined; i++) + if(!strcmp(fn, model->inlined[i].name)) { + buff = model->inlined[i].data; + len = model->inlined[i].length; + freecb = NULL; + break; + } + } + if(!buff || !len || (model->errcode = M3D_PR_INTERP(fn, buff, len, model)) != M3D_SUCCESS) { + M3D_LOG("Unable to generate procedural surface"); + M3D_LOG(fn); + model->errcode = M3D_ERR_UNKIMG; + } + if(freecb && buff) (*freecb)(buff); +#else + (void)readfilecb; + (void)freecb; + (void)fn; + M3D_LOG("Unimplemented interpreter"); + M3D_LOG(fn); + model->errcode = M3D_ERR_UNIMPL; +#endif +} +/* helpers to read indices from data stream */ +#define M3D_GETSTR(x) do{offs=0;data=_m3d_getidx(data,model->si_s,&offs);x=offs?((char*)model->raw+16+offs):NULL;}while(0) +_inline static unsigned char *_m3d_getidx(unsigned char *data, char type, M3D_INDEX *idx) +{ + switch(type) { + case 1: *idx = data[0] > 253 ? (int8_t)data[0] : data[0]; data++; break; + case 2: *idx = *((uint16_t*)data) > 65533 ? *((int16_t*)data) : *((uint16_t*)data); data += 2; break; + case 4: *idx = *((int32_t*)data); data += 4; break; + } + return data; +} + +#ifndef M3D_NOANIMATION +/* multiply 4 x 4 matrices. Do not use float *r[16] as argument, because some compilers misinterpret that as + * 16 pointers each pointing to a float, but we need a single pointer to 16 floats. */ +void _m3d_mul(M3D_FLOAT *r, M3D_FLOAT *a, M3D_FLOAT *b) +{ + r[ 0] = b[ 0] * a[ 0] + b[ 4] * a[ 1] + b[ 8] * a[ 2] + b[12] * a[ 3]; + r[ 1] = b[ 1] * a[ 0] + b[ 5] * a[ 1] + b[ 9] * a[ 2] + b[13] * a[ 3]; + r[ 2] = b[ 2] * a[ 0] + b[ 6] * a[ 1] + b[10] * a[ 2] + b[14] * a[ 3]; + r[ 3] = b[ 3] * a[ 0] + b[ 7] * a[ 1] + b[11] * a[ 2] + b[15] * a[ 3]; + r[ 4] = b[ 0] * a[ 4] + b[ 4] * a[ 5] + b[ 8] * a[ 6] + b[12] * a[ 7]; + r[ 5] = b[ 1] * a[ 4] + b[ 5] * a[ 5] + b[ 9] * a[ 6] + b[13] * a[ 7]; + r[ 6] = b[ 2] * a[ 4] + b[ 6] * a[ 5] + b[10] * a[ 6] + b[14] * a[ 7]; + r[ 7] = b[ 3] * a[ 4] + b[ 7] * a[ 5] + b[11] * a[ 6] + b[15] * a[ 7]; + r[ 8] = b[ 0] * a[ 8] + b[ 4] * a[ 9] + b[ 8] * a[10] + b[12] * a[11]; + r[ 9] = b[ 1] * a[ 8] + b[ 5] * a[ 9] + b[ 9] * a[10] + b[13] * a[11]; + r[10] = b[ 2] * a[ 8] + b[ 6] * a[ 9] + b[10] * a[10] + b[14] * a[11]; + r[11] = b[ 3] * a[ 8] + b[ 7] * a[ 9] + b[11] * a[10] + b[15] * a[11]; + r[12] = b[ 0] * a[12] + b[ 4] * a[13] + b[ 8] * a[14] + b[12] * a[15]; + r[13] = b[ 1] * a[12] + b[ 5] * a[13] + b[ 9] * a[14] + b[13] * a[15]; + r[14] = b[ 2] * a[12] + b[ 6] * a[13] + b[10] * a[14] + b[14] * a[15]; + r[15] = b[ 3] * a[12] + b[ 7] * a[13] + b[11] * a[14] + b[15] * a[15]; +} +/* calculate 4 x 4 matrix inverse */ +void _m3d_inv(M3D_FLOAT *m) +{ + M3D_FLOAT r[16]; + M3D_FLOAT det = + m[ 0]*m[ 5]*m[10]*m[15] - m[ 0]*m[ 5]*m[11]*m[14] + m[ 0]*m[ 6]*m[11]*m[13] - m[ 0]*m[ 6]*m[ 9]*m[15] + + m[ 0]*m[ 7]*m[ 9]*m[14] - m[ 0]*m[ 7]*m[10]*m[13] - m[ 1]*m[ 6]*m[11]*m[12] + m[ 1]*m[ 6]*m[ 8]*m[15] + - m[ 1]*m[ 7]*m[ 8]*m[14] + m[ 1]*m[ 7]*m[10]*m[12] - m[ 1]*m[ 4]*m[10]*m[15] + m[ 1]*m[ 4]*m[11]*m[14] + + m[ 2]*m[ 7]*m[ 8]*m[13] - m[ 2]*m[ 7]*m[ 9]*m[12] + m[ 2]*m[ 4]*m[ 9]*m[15] - m[ 2]*m[ 4]*m[11]*m[13] + + m[ 2]*m[ 5]*m[11]*m[12] - m[ 2]*m[ 5]*m[ 8]*m[15] - m[ 3]*m[ 4]*m[ 9]*m[14] + m[ 3]*m[ 4]*m[10]*m[13] + - m[ 3]*m[ 5]*m[10]*m[12] + m[ 3]*m[ 5]*m[ 8]*m[14] - m[ 3]*m[ 6]*m[ 8]*m[13] + m[ 3]*m[ 6]*m[ 9]*m[12]; + if(det == (M3D_FLOAT)0.0 || det == (M3D_FLOAT)-0.0) det = (M3D_FLOAT)1.0; else det = (M3D_FLOAT)1.0 / det; + r[ 0] = det *(m[ 5]*(m[10]*m[15] - m[11]*m[14]) + m[ 6]*(m[11]*m[13] - m[ 9]*m[15]) + m[ 7]*(m[ 9]*m[14] - m[10]*m[13])); + r[ 1] = -det*(m[ 1]*(m[10]*m[15] - m[11]*m[14]) + m[ 2]*(m[11]*m[13] - m[ 9]*m[15]) + m[ 3]*(m[ 9]*m[14] - m[10]*m[13])); + r[ 2] = det *(m[ 1]*(m[ 6]*m[15] - m[ 7]*m[14]) + m[ 2]*(m[ 7]*m[13] - m[ 5]*m[15]) + m[ 3]*(m[ 5]*m[14] - m[ 6]*m[13])); + r[ 3] = -det*(m[ 1]*(m[ 6]*m[11] - m[ 7]*m[10]) + m[ 2]*(m[ 7]*m[ 9] - m[ 5]*m[11]) + m[ 3]*(m[ 5]*m[10] - m[ 6]*m[ 9])); + r[ 4] = -det*(m[ 4]*(m[10]*m[15] - m[11]*m[14]) + m[ 6]*(m[11]*m[12] - m[ 8]*m[15]) + m[ 7]*(m[ 8]*m[14] - m[10]*m[12])); + r[ 5] = det *(m[ 0]*(m[10]*m[15] - m[11]*m[14]) + m[ 2]*(m[11]*m[12] - m[ 8]*m[15]) + m[ 3]*(m[ 8]*m[14] - m[10]*m[12])); + r[ 6] = -det*(m[ 0]*(m[ 6]*m[15] - m[ 7]*m[14]) + m[ 2]*(m[ 7]*m[12] - m[ 4]*m[15]) + m[ 3]*(m[ 4]*m[14] - m[ 6]*m[12])); + r[ 7] = det *(m[ 0]*(m[ 6]*m[11] - m[ 7]*m[10]) + m[ 2]*(m[ 7]*m[ 8] - m[ 4]*m[11]) + m[ 3]*(m[ 4]*m[10] - m[ 6]*m[ 8])); + r[ 8] = det *(m[ 4]*(m[ 9]*m[15] - m[11]*m[13]) + m[ 5]*(m[11]*m[12] - m[ 8]*m[15]) + m[ 7]*(m[ 8]*m[13] - m[ 9]*m[12])); + r[ 9] = -det*(m[ 0]*(m[ 9]*m[15] - m[11]*m[13]) + m[ 1]*(m[11]*m[12] - m[ 8]*m[15]) + m[ 3]*(m[ 8]*m[13] - m[ 9]*m[12])); + r[10] = det *(m[ 0]*(m[ 5]*m[15] - m[ 7]*m[13]) + m[ 1]*(m[ 7]*m[12] - m[ 4]*m[15]) + m[ 3]*(m[ 4]*m[13] - m[ 5]*m[12])); + r[11] = -det*(m[ 0]*(m[ 5]*m[11] - m[ 7]*m[ 9]) + m[ 1]*(m[ 7]*m[ 8] - m[ 4]*m[11]) + m[ 3]*(m[ 4]*m[ 9] - m[ 5]*m[ 8])); + r[12] = -det*(m[ 4]*(m[ 9]*m[14] - m[10]*m[13]) + m[ 5]*(m[10]*m[12] - m[ 8]*m[14]) + m[ 6]*(m[ 8]*m[13] - m[ 9]*m[12])); + r[13] = det *(m[ 0]*(m[ 9]*m[14] - m[10]*m[13]) + m[ 1]*(m[10]*m[12] - m[ 8]*m[14]) + m[ 2]*(m[ 8]*m[13] - m[ 9]*m[12])); + r[14] = -det*(m[ 0]*(m[ 5]*m[14] - m[ 6]*m[13]) + m[ 1]*(m[ 6]*m[12] - m[ 4]*m[14]) + m[ 2]*(m[ 4]*m[13] - m[ 5]*m[12])); + r[15] = det *(m[ 0]*(m[ 5]*m[10] - m[ 6]*m[ 9]) + m[ 1]*(m[ 6]*m[ 8] - m[ 4]*m[10]) + m[ 2]*(m[ 4]*m[ 9] - m[ 5]*m[ 8])); + memcpy(m, &r, sizeof(r)); +} +/* compose a coloumn major 4 x 4 matrix from vec3 position and vec4 orientation/rotation quaternion */ +void _m3d_mat(M3D_FLOAT *r, m3dv_t *p, m3dv_t *q) +{ + if(q->x == (M3D_FLOAT)0.0 && q->y == (M3D_FLOAT)0.0 && q->z >=(M3D_FLOAT) 0.7071065 && q->z <= (M3D_FLOAT)0.7071075 && + q->w == (M3D_FLOAT)0.0) { + r[ 1] = r[ 2] = r[ 4] = r[ 6] = r[ 8] = r[ 9] = (M3D_FLOAT)0.0; + r[ 0] = r[ 5] = r[10] = (M3D_FLOAT)-1.0; + } else { + r[ 0] = 1 - 2 * (q->y * q->y + q->z * q->z); if(r[ 0]>-M3D_EPSILON && r[ 0]x * q->y - q->z * q->w); if(r[ 1]>-M3D_EPSILON && r[ 1]x * q->z + q->y * q->w); if(r[ 2]>-M3D_EPSILON && r[ 2]x * q->y + q->z * q->w); if(r[ 4]>-M3D_EPSILON && r[ 4]x * q->x + q->z * q->z); if(r[ 5]>-M3D_EPSILON && r[ 5]y * q->z - q->x * q->w); if(r[ 6]>-M3D_EPSILON && r[ 6]x * q->z - q->y * q->w); if(r[ 8]>-M3D_EPSILON && r[ 8]y * q->z + q->x * q->w); if(r[ 9]>-M3D_EPSILON && r[ 9]x * q->x + q->y * q->y); if(r[10]>-M3D_EPSILON && r[10]x; r[ 7] = p->y; r[11] = p->z; + r[12] = 0; r[13] = 0; r[14] = 0; r[15] = 1; +} +#endif +#if !defined(M3D_NOANIMATION) || !defined(M3D_NONORMALS) +/* portable fast inverse square root calculation. returns 1/sqrt(x) */ +static M3D_FLOAT _m3d_rsq(M3D_FLOAT x) +{ +#ifdef M3D_DOUBLE + return ((M3D_FLOAT)15.0/(M3D_FLOAT)8.0) + ((M3D_FLOAT)-5.0/(M3D_FLOAT)4.0)*x + ((M3D_FLOAT)3.0/(M3D_FLOAT)8.0)*x*x; +#else + /* John Carmack's */ + float x2 = x * 0.5f; + uint32_t *i = (uint32_t*)&x; + *i = (0x5f3759df - (*i >> 1)); + return x * (1.5f - (x2 * x * x)); +#endif +} +#endif + +/** + * Function to decode a Model 3D into in-memory format + */ +m3d_t *m3d_load(unsigned char *data, m3dread_t readfilecb, m3dfree_t freecb, m3d_t *mtllib) +{ + unsigned char *end, *chunk, *buff, weights[8]; + unsigned int i, j, k, l, n, am, len = 0, reclen, offs; +#ifndef M3D_NOVOXELS + int32_t min_x, min_y, min_z, max_x, max_y, max_z, sx, sy, sz, x, y, z; + M3D_INDEX edge[8], enorm; +#endif + char *name, *lang; + float f; + m3d_t *model; + M3D_INDEX mi; +#ifdef M3D_VERTEXMAX + M3D_INDEX pi; +#endif + M3D_FLOAT w; + m3dcd_t *cd; + m3dtx_t *tx; + m3dh_t *h; + m3dm_t *m; + m3da_t *a; + m3di_t *t; +#ifndef M3D_NONORMALS + char neednorm = 0; + m3dv_t *norm = NULL, *v0, *v1, *v2, va, vb; +#endif +#ifndef M3D_NOANIMATION + M3D_FLOAT r[16]; +#endif +#if !defined(M3D_NOWEIGHTS) || !defined(M3D_NOANIMATION) + m3db_t *b; +#endif +#ifndef M3D_NOWEIGHTS + m3ds_t *sk; +#endif +#ifdef M3D_ASCII + m3ds_t s; + M3D_INDEX bi[M3D_BONEMAXLEVEL+1], level; + const char *ol; + char *ptr, *pe, *fn; +#endif +#ifdef M3D_PROFILING + struct timeval tv0, tv1, tvd; + gettimeofday(&tv0, NULL); +#endif + + if(!data || (!M3D_CHUNKMAGIC(data, '3','D','M','O') +#ifdef M3D_ASCII + && !M3D_CHUNKMAGIC(data, '3','d','m','o') +#endif + )) return NULL; + model = (m3d_t*)M3D_MALLOC(sizeof(m3d_t)); + if(!model) { + M3D_LOG("Out of memory"); + return NULL; + } + memset(model, 0, sizeof(m3d_t)); + + if(mtllib) { + model->nummaterial = mtllib->nummaterial; + model->material = mtllib->material; + model->numtexture = mtllib->numtexture; + model->texture = mtllib->texture; + model->flags |= M3D_FLG_MTLLIB; + } +#ifdef M3D_ASCII + /* ASCII variant? */ + if(M3D_CHUNKMAGIC(data, '3','d','m','o')) { + model->errcode = M3D_ERR_BADFILE; + model->flags |= M3D_FLG_FREESTR; + model->raw = (m3dhdr_t*)data; + ptr = (char*)data; + ol = setlocale(LC_NUMERIC, NULL); + setlocale(LC_NUMERIC, "C"); + /* parse header. Don't use sscanf, that's incredibly slow */ + ptr = _m3d_findarg(ptr); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + pe = _m3d_findnl(ptr); + model->scale = (float)strtod(ptr, NULL); ptr = pe; + if(model->scale <= (M3D_FLOAT)0.0) model->scale = (M3D_FLOAT)1.0; + model->name = _m3d_safestr(ptr, 2); ptr = _m3d_findnl(ptr); + if(!*ptr) goto asciiend; + model->license = _m3d_safestr(ptr, 2); ptr = _m3d_findnl(ptr); + if(!*ptr) goto asciiend; + model->author = _m3d_safestr(ptr, 2); ptr = _m3d_findnl(ptr); + if(!*ptr) goto asciiend; + if(*ptr != '\r' && *ptr != '\n') + model->desc = _m3d_safestr(ptr, 3); + while(*ptr) { + while(*ptr && *ptr!='\n') ptr++; + ptr++; if(*ptr=='\r') ptr++; + if(*ptr == '\n') break; + } + + /* the main chunk reader loop */ + while(*ptr) { + while(*ptr && (*ptr == '\r' || *ptr == '\n')) ptr++; + if(!*ptr || (ptr[0]=='E' && ptr[1]=='n' && ptr[2]=='d')) break; + /* make sure there's at least one data row */ + pe = ptr; ptr = _m3d_findnl(ptr); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + /* Preview chunk */ + if(!memcmp(pe, "Preview", 7)) { + if(readfilecb) { + pe = _m3d_safestr(ptr, 0); + if(!pe || !*pe) goto asciiend; + model->preview.data = (*readfilecb)(pe, &model->preview.length); + M3D_FREE(pe); + } + while(*ptr && *ptr != '\r' && *ptr != '\n') + ptr = _m3d_findnl(ptr); + } else + /* texture map chunk */ + if(!memcmp(pe, "Textmap", 7)) { + if(model->tmap) { M3D_LOG("More texture map chunks, should be unique"); goto asciiend; } + while(*ptr && *ptr != '\r' && *ptr != '\n') { + i = model->numtmap++; + model->tmap = (m3dti_t*)M3D_REALLOC(model->tmap, model->numtmap * sizeof(m3dti_t)); + if(!model->tmap) goto memerr; + ptr = _m3d_getfloat(ptr, &model->tmap[i].u); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + _m3d_getfloat(ptr, &model->tmap[i].v); + ptr = _m3d_findnl(ptr); + } + } else + /* vertex chunk */ + if(!memcmp(pe, "Vertex", 6)) { + if(model->vertex) { M3D_LOG("More vertex chunks, should be unique"); goto asciiend; } + while(*ptr && *ptr != '\r' && *ptr != '\n') { + i = model->numvertex++; + model->vertex = (m3dv_t*)M3D_REALLOC(model->vertex, model->numvertex * sizeof(m3dv_t)); + if(!model->vertex) goto memerr; + memset(&model->vertex[i], 0, sizeof(m3dv_t)); + model->vertex[i].skinid = M3D_UNDEF; + model->vertex[i].color = 0; + model->vertex[i].w = (M3D_FLOAT)1.0; + ptr = _m3d_getfloat(ptr, &model->vertex[i].x); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + ptr = _m3d_getfloat(ptr, &model->vertex[i].y); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + ptr = _m3d_getfloat(ptr, &model->vertex[i].z); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + ptr = _m3d_getfloat(ptr, &model->vertex[i].w); + if(!*ptr) goto asciiend; + if(*ptr == '#') { + ptr = _m3d_gethex(ptr, &model->vertex[i].color); + if(!*ptr) goto asciiend; + } + /* parse skin */ + memset(&s, 0, sizeof(m3ds_t)); + for(j = 0, w = (M3D_FLOAT)0.0; j < M3D_NUMBONE && *ptr && *ptr != '\r' && *ptr != '\n'; j++) { + ptr = _m3d_findarg(ptr); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + ptr = _m3d_getint(ptr, &k); + s.boneid[j] = (M3D_INDEX)k; + if(*ptr == ':') { + ptr++; + ptr = _m3d_getfloat(ptr, &s.weight[j]); + w += s.weight[j]; + } else if(!j) + s.weight[j] = (M3D_FLOAT)1.0; + if(!*ptr) goto asciiend; + } + if(s.boneid[0] != M3D_UNDEF && s.weight[0] > (M3D_FLOAT)0.0) { + if(w != (M3D_FLOAT)1.0 && w != (M3D_FLOAT)0.0) + for(j = 0; j < M3D_NUMBONE && s.weight[j] > (M3D_FLOAT)0.0; j++) + s.weight[j] /= w; + k = M3D_NOTDEFINED; + if(model->skin) { + for(j = 0; j < model->numskin; j++) + if(!memcmp(&model->skin[j], &s, sizeof(m3ds_t))) { k = j; break; } + } + if(k == M3D_NOTDEFINED) { + k = model->numskin++; + model->skin = (m3ds_t*)M3D_REALLOC(model->skin, model->numskin * sizeof(m3ds_t)); + if(!model->skin) goto memerr; + memcpy(&model->skin[k], &s, sizeof(m3ds_t)); + } + model->vertex[i].skinid = (M3D_INDEX)k; + } + ptr = _m3d_findnl(ptr); + } + } else + /* Skeleton, bone hierarchy */ + if(!memcmp(pe, "Bones", 5)) { + if(model->bone) { M3D_LOG("More bones chunks, should be unique"); goto asciiend; } + bi[0] = M3D_UNDEF; + while(*ptr && *ptr != '\r' && *ptr != '\n') { + i = model->numbone++; + model->bone = (m3db_t*)M3D_REALLOC(model->bone, model->numbone * sizeof(m3db_t)); + if(!model->bone) goto memerr; + for(level = 0; *ptr == '/'; ptr++, level++); + if(level > M3D_BONEMAXLEVEL || !*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + bi[level+1] = i; + model->bone[i].numweight = 0; + model->bone[i].weight = NULL; + model->bone[i].parent = bi[level]; + ptr = _m3d_getint(ptr, &k); + ptr = _m3d_findarg(ptr); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + model->bone[i].pos = (M3D_INDEX)k; + ptr = _m3d_getint(ptr, &k); + ptr = _m3d_findarg(ptr); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + model->bone[i].ori = (M3D_INDEX)k; + model->vertex[k].skinid = M3D_INDEXMAX; + pe = _m3d_safestr(ptr, 0); + if(!pe || !*pe) goto asciiend; + model->bone[i].name = pe; + ptr = _m3d_findnl(ptr); + } + } else + /* material chunk */ + if(!memcmp(pe, "Material", 8)) { + pe = _m3d_findarg(pe); + if(!*pe || *pe == '\r' || *pe == '\n') goto asciiend; + pe = _m3d_safestr(pe, 0); + if(!pe || !*pe) goto asciiend; + for(i = 0; i < model->nummaterial; i++) + if(!strcmp(pe, model->material[i].name)) { + M3D_LOG("Multiple definitions for material"); + M3D_LOG(pe); + M3D_FREE(pe); + pe = NULL; + while(*ptr && *ptr != '\r' && *ptr != '\n') ptr = _m3d_findnl(ptr); + break; + } + if(!pe) continue; + i = model->nummaterial++; + if(model->flags & M3D_FLG_MTLLIB) { + m = model->material; + model->material = (m3dm_t*)M3D_MALLOC(model->nummaterial * sizeof(m3dm_t)); + if(!model->material) goto memerr; + memcpy(model->material, m, (model->nummaterial - 1) * sizeof(m3dm_t)); + if(model->texture) { + tx = model->texture; + model->texture = (m3dtx_t*)M3D_MALLOC(model->numtexture * sizeof(m3dtx_t)); + if(!model->texture) goto memerr; + memcpy(model->texture, tx, model->numtexture * sizeof(m3dm_t)); + } + model->flags &= ~M3D_FLG_MTLLIB; + } else { + model->material = (m3dm_t*)M3D_REALLOC(model->material, model->nummaterial * sizeof(m3dm_t)); + if(!model->material) goto memerr; + } + m = &model->material[i]; + m->name = pe; + m->numprop = 0; + m->prop = NULL; + while(*ptr && *ptr != '\r' && *ptr != '\n') { + k = n = 256; + if(*ptr == 'm' && *(ptr+1) == 'a' && *(ptr+2) == 'p' && *(ptr+3) == '_') { + k = m3dpf_map; + ptr += 4; + } + for(j = 0; j < sizeof(m3d_propertytypes)/sizeof(m3d_propertytypes[0]); j++) + if(!memcmp(ptr, m3d_propertytypes[j].key, strlen(m3d_propertytypes[j].key))) { + n = m3d_propertytypes[j].id; + if(k != m3dpf_map) k = m3d_propertytypes[j].format; + break; + } + if(n != 256 && k != 256) { + ptr = _m3d_findarg(ptr); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + j = m->numprop++; + m->prop = (m3dp_t*)M3D_REALLOC(m->prop, m->numprop * sizeof(m3dp_t)); + if(!m->prop) goto memerr; + m->prop[j].type = n + (k == m3dpf_map && n < 128 ? 128 : 0); + switch(k) { + case m3dpf_color: ptr = _m3d_gethex(ptr, &m->prop[j].value.color); break; + case m3dpf_uint8: + case m3dpf_uint16: + case m3dpf_uint32: ptr = _m3d_getint(ptr, &m->prop[j].value.num); break; + case m3dpf_float: ptr = _m3d_getfloat(ptr, &m->prop[j].value.fnum); break; + case m3dpf_map: + pe = _m3d_safestr(ptr, 0); + if(!pe || !*pe) goto asciiend; + m->prop[j].value.textureid = _m3d_gettx(model, readfilecb, freecb, pe); + if(model->errcode == M3D_ERR_ALLOC) { M3D_FREE(pe); goto memerr; } + /* this error code only returned if readfilecb was specified */ + if(m->prop[j].value.textureid == M3D_UNDEF) { + M3D_LOG("Texture not found"); + M3D_LOG(pe); + m->numprop--; + } + M3D_FREE(pe); + break; + } + } else { + M3D_LOG("Unknown material property in"); + M3D_LOG(m->name); + model->errcode = M3D_ERR_UNKPROP; + } + ptr = _m3d_findnl(ptr); + } + if(!m->numprop) model->nummaterial--; + } else + /* procedural */ + if(!memcmp(pe, "Procedural", 10)) { + pe = _m3d_safestr(ptr, 0); + _m3d_getpr(model, readfilecb, freecb, pe); + M3D_FREE(pe); + while(*ptr && *ptr != '\r' && *ptr != '\n') ptr = _m3d_findnl(ptr); + } else + /* mesh */ + if(!memcmp(pe, "Mesh", 4)) { + mi = M3D_UNDEF; +#ifdef M3D_VERTEXMAX + pi = M3D_UNDEF; +#endif + while(*ptr && *ptr != '\r' && *ptr != '\n') { + if(*ptr == 'u') { + ptr = _m3d_findarg(ptr); + if(!*ptr) goto asciiend; + mi = M3D_UNDEF; + if(*ptr != '\r' && *ptr != '\n') { + pe = _m3d_safestr(ptr, 0); + if(!pe || !*pe) goto asciiend; + for(j = 0; j < model->nummaterial; j++) + if(!strcmp(pe, model->material[j].name)) { mi = (M3D_INDEX)j; break; } + if(mi == M3D_UNDEF && !(model->flags & M3D_FLG_MTLLIB)) { + mi = model->nummaterial++; + model->material = (m3dm_t*)M3D_REALLOC(model->material, model->nummaterial * sizeof(m3dm_t)); + if(!model->material) goto memerr; + model->material[mi].name = pe; + model->material[mi].numprop = 1; + model->material[mi].prop = NULL; + } else + M3D_FREE(pe); + } + } else + if(*ptr == 'p') { + ptr = _m3d_findarg(ptr); + if(!*ptr) goto asciiend; +#ifdef M3D_VERTEXMAX + pi = M3D_UNDEF; + if(*ptr != '\r' && *ptr != '\n') { + pe = _m3d_safestr(ptr, 0); + if(!pe || !*pe) goto asciiend; + for(j = 0; j < model->numparam; j++) + if(!strcmp(pe, model->param[j].name)) { pi = (M3D_INDEX)j; break; } + if(pi == M3D_UNDEF) { + pi = model->numparam++; + model->param = (m3dvi_t*)M3D_REALLOC(model->param, model->numparam * sizeof(m3dvi_t)); + if(!model->param) goto memerr; + model->param[pi].name = pe; + model->param[pi].count = 0; + } else + M3D_FREE(pe); + } +#endif + } else { + i = model->numface++; + model->face = (m3df_t*)M3D_REALLOC(model->face, model->numface * sizeof(m3df_t)); + if(!model->face) goto memerr; + memset(&model->face[i], 255, sizeof(m3df_t)); /* set all index to -1 by default */ + model->face[i].materialid = mi; +#ifdef M3D_VERTEXMAX + model->face[i].paramid = pi; +#endif + /* hardcoded triangles. */ + for(j = 0; j < 3; j++) { + /* vertex */ + ptr = _m3d_getint(ptr, &k); + model->face[i].vertex[j] = (M3D_INDEX)k; + if(!*ptr) goto asciiend; + if(*ptr == '/') { + ptr++; + if(*ptr != '/') { + /* texcoord */ + ptr = _m3d_getint(ptr, &k); + model->face[i].texcoord[j] = (M3D_INDEX)k; + if(!*ptr) goto asciiend; + } + if(*ptr == '/') { + ptr++; + /* normal */ + ptr = _m3d_getint(ptr, &k); + model->face[i].normal[j] = (M3D_INDEX)k; + if(!*ptr) goto asciiend; + } + if(*ptr == '/') { + ptr++; + /* maximum */ + ptr = _m3d_getint(ptr, &k); +#ifdef M3D_VERTEXMAX + model->face[i].vertmax[j] = (M3D_INDEX)k; +#endif + if(!*ptr) goto asciiend; + } + } +#ifndef M3D_NONORMALS + if(model->face[i].normal[j] == M3D_UNDEF) neednorm = 1; +#endif + ptr = _m3d_findarg(ptr); + } + } + ptr = _m3d_findnl(ptr); + } + } else + /* voxel types chunk */ + if(!memcmp(pe, "VoxTypes", 8) || !memcmp(pe, "Voxtypes", 8)) { + if(model->voxtype) { M3D_LOG("More voxel types chunks, should be unique"); goto asciiend; } + while(*ptr && *ptr != '\r' && *ptr != '\n') { + i = model->numvoxtype++; + model->voxtype = (m3dvt_t*)M3D_REALLOC(model->voxtype, model->numvoxtype * sizeof(m3dvt_t)); + if(!model->voxtype) goto memerr; + memset(&model->voxtype[i], 0, sizeof(m3dvt_t)); + model->voxtype[i].materialid = M3D_UNDEF; + model->voxtype[i].skinid = M3D_UNDEF; + ptr = _m3d_gethex(ptr, &model->voxtype[i].color); + if(!*ptr) goto asciiend; + if(*ptr == '/') { + ptr = _m3d_gethex(ptr, &k); + model->voxtype[i].rotation = k; + if(!*ptr) goto asciiend; + if(*ptr == '/') { + ptr = _m3d_gethex(ptr, &k); + model->voxtype[i].voxshape = k; + if(!*ptr) goto asciiend; + } + } + while(*ptr == ' ' || *ptr == '\t') ptr++; + if(*ptr == '\r' || *ptr == '\n') { ptr = _m3d_findnl(ptr); continue; } + /* name */ + if(*ptr != '-') { + pe = _m3d_safestr(ptr, 0); + if(!pe || !*pe) goto asciiend; + model->voxtype[i].name = pe; + for(j = 0; j < model->nummaterial; j++) + if(!strcmp(pe, model->material[j].name)) { model->voxtype[i].materialid = (M3D_INDEX)j; break; } + } + ptr = _m3d_findarg(ptr); + /* parse skin */ + memset(&s, 0, sizeof(m3ds_t)); + for(j = 0, w = (M3D_FLOAT)0.0; j < M3D_NUMBONE && *ptr && *ptr != '{' && *ptr != '\r' && *ptr != '\n'; j++) { + ptr = _m3d_getint(ptr, &k); + s.boneid[j] = (M3D_INDEX)k; + if(*ptr == ':') { + ptr++; + ptr = _m3d_getfloat(ptr, &s.weight[j]); + w += s.weight[j]; + } else if(!j) + s.weight[j] = (M3D_FLOAT)1.0; + if(!*ptr) goto asciiend; + ptr = _m3d_findarg(ptr); + } + if(s.boneid[0] != M3D_UNDEF && s.weight[0] > (M3D_FLOAT)0.0) { + if(w != (M3D_FLOAT)1.0 && w != (M3D_FLOAT)0.0) + for(j = 0; j < M3D_NUMBONE && s.weight[j] > (M3D_FLOAT)0.0; j++) + s.weight[j] /= w; + k = M3D_NOTDEFINED; + if(model->skin) { + for(j = 0; j < model->numskin; j++) + if(!memcmp(&model->skin[j], &s, sizeof(m3ds_t))) { k = j; break; } + } + if(k == M3D_NOTDEFINED) { + k = model->numskin++; + model->skin = (m3ds_t*)M3D_REALLOC(model->skin, model->numskin * sizeof(m3ds_t)); + if(!model->skin) goto memerr; + memcpy(&model->skin[k], &s, sizeof(m3ds_t)); + } + model->voxtype[i].skinid = (M3D_INDEX)k; + } + /* parse item list */ + if(*ptr == '{') { + while(*ptr == '{' || *ptr == ' ' || *ptr == '\t') ptr++; + while(*ptr && *ptr != '}' && *ptr != '\r' && *ptr != '\n') { + ptr = _m3d_getint(ptr, &k); + ptr = _m3d_findarg(ptr); + if(!*ptr || *ptr == '}' || *ptr == '\r' || *ptr == '\n') goto asciiend; + pe = _m3d_safestr(ptr, 0); + if(!pe || !*pe) goto asciiend; + ptr = _m3d_findarg(ptr); + j = model->voxtype[i].numitem++; + model->voxtype[i].item = (m3dvi_t*)M3D_REALLOC(model->voxtype[i].item, + model->voxtype[i].numitem * sizeof(m3dvi_t)); + if(!model->voxtype[i].item) goto memerr; + model->voxtype[i].item[j].count = k; + model->voxtype[i].item[j].name = pe; + } + if(*ptr != '}') goto asciiend; + } + ptr = _m3d_findnl(ptr); + } + } else + /* voxel data */ + if(!memcmp(pe, "Voxel", 5)) { + if(!model->voxtype) { M3D_LOG("No voxel type chunk before voxel data"); goto asciiend; } + pe = _m3d_findarg(pe); + if(!*pe) goto asciiend; + if(*pe == '\r' || *pe == '\n') pe = NULL; + else pe = _m3d_safestr(pe, 0); + i = model->numvoxel++; + model->voxel = (m3dvx_t*)M3D_REALLOC(model->voxel, model->numvoxel * sizeof(m3dvx_t)); + if(!model->voxel) goto memerr; + memset(&model->voxel[i], 0, sizeof(m3dvx_t)); + model->voxel[i].name = pe; + k = l = 0; + while(*ptr && *ptr != '\r' && *ptr != '\n') { + switch(*ptr) { + case 'u': + ptr = _m3d_findarg(ptr); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + ptr = _m3d_getint(ptr, &n); + model->voxel[i].uncertain = ((n > 0 && n < 256 ? n : 0) * 255) / 100; + ptr = _m3d_findarg(ptr); + if(*ptr && *ptr != '\r' && *ptr != '\n') { + ptr = _m3d_getint(ptr, &n); + model->voxel[i].groupid = n > 0 && n < 256 ? n : 0; + } + break; + case 'p': + ptr = _m3d_findarg(ptr); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + ptr = _m3d_getint(ptr, &n); + model->voxel[i].x = n; + ptr = _m3d_findarg(ptr); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + ptr = _m3d_getint(ptr, &n); + model->voxel[i].y = n; + ptr = _m3d_findarg(ptr); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + ptr = _m3d_getint(ptr, &n); + model->voxel[i].z = n; + break; + case 'd': + ptr = _m3d_findarg(ptr); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + ptr = _m3d_getint(ptr, &n); + model->voxel[i].w = n; + ptr = _m3d_findarg(ptr); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + ptr = _m3d_getint(ptr, &n); + model->voxel[i].h = n; + ptr = _m3d_findarg(ptr); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + ptr = _m3d_getint(ptr, &n); + model->voxel[i].d = n; + break; + case 'l': + if(model->voxel[i].data) { l++; k = 0; } + else { + if(!model->voxel[i].w || !model->voxel[i].h || !model->voxel[i].d) { + M3D_LOG("No voxel dimension before layer data"); + goto asciiend; + } + model->voxel[i].data = (M3D_VOXEL*)M3D_MALLOC( + model->voxel[i].w * model->voxel[i].h * model->voxel[i].d * sizeof(M3D_VOXEL)); + if(!model->voxel[i].data) goto memerr; + } + break; + default: + if(!model->voxel[i].data || l >= model->voxel[i].h || k >= model->voxel[i].d) { + M3D_LOG("Missing voxel attributes or out of bound data"); + goto asciiend; + } + for(n = l * model->voxel[i].w * model->voxel[i].d + k * model->voxel[i].w; + j < model->voxel[i].w && *ptr && *ptr != '\r' && *ptr != '\n'; j++) { + ptr = _m3d_getint(ptr, &am); + if(am >= model->numvoxtype) goto asciiend; + model->voxel[i].data[n + j] = am; + } + k++; + break; + } + ptr = _m3d_findnl(ptr); + } + } else + /* mathematical shape */ + if(!memcmp(pe, "Shape", 5)) { + pe = _m3d_findarg(pe); + if(!*pe || *pe == '\r' || *pe == '\n') goto asciiend; + pe = _m3d_safestr(pe, 0); + if(!pe || !*pe) goto asciiend; + i = model->numshape++; + model->shape = (m3dh_t*)M3D_REALLOC(model->shape, model->numshape * sizeof(m3ds_t)); + if(!model->shape) goto memerr; + h = &model->shape[i]; + h->name = pe; + h->group = M3D_UNDEF; + h->numcmd = 0; + h->cmd = NULL; + while(*ptr && *ptr != '\r' && *ptr != '\n') { + if(!memcmp(ptr, "group", 5)) { + ptr = _m3d_findarg(ptr); + ptr = _m3d_getint(ptr, &h->group); + ptr = _m3d_findnl(ptr); + if(h->group != M3D_UNDEF && h->group >= model->numbone) { + M3D_LOG("Unknown bone id as shape group in shape"); + M3D_LOG(pe); + h->group = M3D_UNDEF; + model->errcode = M3D_ERR_SHPE; + } + continue; + } + for(cd = NULL, k = 0; k < (unsigned int)(sizeof(m3d_commandtypes)/sizeof(m3d_commandtypes[0])); k++) { + j = (unsigned int)strlen(m3d_commandtypes[k].key); + if(!memcmp(ptr, m3d_commandtypes[k].key, j) && (ptr[j] == ' ' || ptr[j] == '\r' || ptr[j] == '\n')) + { cd = &m3d_commandtypes[k]; break; } + } + if(cd) { + j = h->numcmd++; + h->cmd = (m3dc_t*)M3D_REALLOC(h->cmd, h->numcmd * sizeof(m3dc_t)); + if(!h->cmd) goto memerr; + h->cmd[j].type = k; + h->cmd[j].arg = (uint32_t*)M3D_MALLOC(cd->p * sizeof(uint32_t)); + if(!h->cmd[j].arg) goto memerr; + memset(h->cmd[j].arg, 0, cd->p * sizeof(uint32_t)); + for(k = n = 0, l = cd->p; k < l; k++) { + ptr = _m3d_findarg(ptr); + if(!*ptr) goto asciiend; + if(*ptr == '[') { + ptr = _m3d_findarg(ptr + 1); + if(!*ptr) goto asciiend; + } + if(*ptr == ']' || *ptr == '\r' || *ptr == '\n') break; + switch(cd->a[((k - n) % (cd->p - n)) + n]) { + case m3dcp_mi_t: + mi = M3D_UNDEF; + if(*ptr != '\r' && *ptr != '\n') { + pe = _m3d_safestr(ptr, 0); + if(!pe || !*pe) goto asciiend; + for(n = 0; n < model->nummaterial; n++) + if(!strcmp(pe, model->material[n].name)) { mi = (M3D_INDEX)n; break; } + if(mi == M3D_UNDEF && !(model->flags & M3D_FLG_MTLLIB)) { + mi = model->nummaterial++; + model->material = (m3dm_t*)M3D_REALLOC(model->material, + model->nummaterial * sizeof(m3dm_t)); + if(!model->material) goto memerr; + model->material[mi].name = pe; + model->material[mi].numprop = 1; + model->material[mi].prop = NULL; + } else + M3D_FREE(pe); + } + h->cmd[j].arg[k] = mi; + break; + case m3dcp_vc_t: +#ifdef M3D_DOUBLE + _m3d_getfloat(ptr, &w); f = w; + memcpy(&h->cmd[j].arg[k], &f, 4); +#else + _m3d_getfloat(ptr, (float*)&h->cmd[j].arg[k]); +#endif + break; + case m3dcp_va_t: + ptr = _m3d_getint(ptr, &h->cmd[j].arg[k]); + n = k + 1; l += (h->cmd[j].arg[k] - 1) * (cd->p - k - 1); + h->cmd[j].arg = (uint32_t*)M3D_REALLOC(h->cmd[j].arg, l * sizeof(uint32_t)); + if(!h->cmd[j].arg) goto memerr; + memset(&h->cmd[j].arg[k + 1], 0, (l - k - 1) * sizeof(uint32_t)); + break; + case m3dcp_qi_t: + ptr = _m3d_getint(ptr, &h->cmd[j].arg[k]); + model->vertex[h->cmd[i].arg[k]].skinid = M3D_INDEXMAX; + break; + default: + ptr = _m3d_getint(ptr, &h->cmd[j].arg[k]); + break; + } + } + } else { + M3D_LOG("Unknown shape command in"); + M3D_LOG(h->name); + model->errcode = M3D_ERR_UNKCMD; + } + ptr = _m3d_findnl(ptr); + } + if(!h->numcmd) model->numshape--; + } else + /* annotation labels */ + if(!memcmp(pe, "Labels", 6)) { + pe = _m3d_findarg(pe); + if(!*pe) goto asciiend; + if(*pe == '\r' || *pe == '\n') pe = NULL; + else pe = _m3d_safestr(pe, 0); + k = 0; fn = NULL; + while(*ptr && *ptr != '\r' && *ptr != '\n') { + if(*ptr == 'c') { + ptr = _m3d_findarg(ptr); + if(!*pe || *pe == '\r' || *pe == '\n') goto asciiend; + ptr = _m3d_gethex(ptr, &k); + } else + if(*ptr == 'l') { + ptr = _m3d_findarg(ptr); + if(!*pe || *pe == '\r' || *pe == '\n') goto asciiend; + fn = _m3d_safestr(ptr, 2); + } else { + i = model->numlabel++; + model->label = (m3dl_t*)M3D_REALLOC(model->label, model->numlabel * sizeof(m3dl_t)); + if(!model->label) goto memerr; + model->label[i].name = pe; + model->label[i].lang = fn; + model->label[i].color = k; + ptr = _m3d_getint(ptr, &j); + model->label[i].vertexid = (M3D_INDEX)j; + ptr = _m3d_findarg(ptr); + if(!*pe || *pe == '\r' || *pe == '\n') goto asciiend; + model->label[i].text = _m3d_safestr(ptr, 2); + } + ptr = _m3d_findnl(ptr); + } + } else + /* action */ + if(!memcmp(pe, "Action", 6)) { + pe = _m3d_findarg(pe); + if(!*pe || *pe == '\r' || *pe == '\n') goto asciiend; + pe = _m3d_getint(pe, &k); + pe = _m3d_findarg(pe); + if(!*pe || *pe == '\r' || *pe == '\n') goto asciiend; + pe = _m3d_safestr(pe, 0); + if(!pe || !*pe) goto asciiend; + i = model->numaction++; + model->action = (m3da_t*)M3D_REALLOC(model->action, model->numaction * sizeof(m3da_t)); + if(!model->action) goto memerr; + a = &model->action[i]; + a->name = pe; + a->durationmsec = k; + /* skip the first frame marker as there's always at least one frame */ + a->numframe = 1; + a->frame = (m3dfr_t*)M3D_MALLOC(sizeof(m3dfr_t)); + if(!a->frame) goto memerr; + a->frame[0].msec = 0; + a->frame[0].numtransform = 0; + a->frame[0].transform = NULL; + i = 0; + if(*ptr == 'f') + ptr = _m3d_findnl(ptr); + while(*ptr && *ptr != '\r' && *ptr != '\n') { + if(*ptr == 'f') { + i = a->numframe++; + a->frame = (m3dfr_t*)M3D_REALLOC(a->frame, a->numframe * sizeof(m3dfr_t)); + if(!a->frame) goto memerr; + ptr = _m3d_findarg(ptr); + ptr = _m3d_getint(ptr, &a->frame[i].msec); + a->frame[i].numtransform = 0; + a->frame[i].transform = NULL; + } else { + j = a->frame[i].numtransform++; + a->frame[i].transform = (m3dtr_t*)M3D_REALLOC(a->frame[i].transform, + a->frame[i].numtransform * sizeof(m3dtr_t)); + if(!a->frame[i].transform) goto memerr; + ptr = _m3d_getint(ptr, &k); + ptr = _m3d_findarg(ptr); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + a->frame[i].transform[j].boneid = (M3D_INDEX)k; + ptr = _m3d_getint(ptr, &k); + ptr = _m3d_findarg(ptr); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + a->frame[i].transform[j].pos = (M3D_INDEX)k; + ptr = _m3d_getint(ptr, &k); + if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend; + a->frame[i].transform[j].ori = (M3D_INDEX)k; + model->vertex[k].skinid = M3D_INDEXMAX; + } + ptr = _m3d_findnl(ptr); + } + } else + /* inlined assets chunk */ + if(!memcmp(pe, "Assets", 6)) { + while(*ptr && *ptr != '\r' && *ptr != '\n') { + if(readfilecb) { + pe = _m3d_safestr(ptr, 2); + if(!pe || !*pe) goto asciiend; + i = model->numinlined++; + model->inlined = (m3di_t*)M3D_REALLOC(model->inlined, model->numinlined * sizeof(m3di_t)); + if(!model->inlined) goto memerr; + t = &model->inlined[i]; + model->inlined[i].data = (*readfilecb)(pe, &model->inlined[i].length); + if(model->inlined[i].data) { + fn = strrchr(pe, '.'); + if(fn && (fn[1] == 'p' || fn[1] == 'P') && (fn[2] == 'n' || fn[2] == 'N') && + (fn[3] == 'g' || fn[3] == 'G')) *fn = 0; + fn = strrchr(pe, '/'); + if(!fn) fn = strrchr(pe, '\\'); + if(!fn) fn = pe; else fn++; + model->inlined[i].name = _m3d_safestr(fn, 0); + } else + model->numinlined--; + M3D_FREE(pe); + } + ptr = _m3d_findnl(ptr); + } + } else + /* extra chunks */ + if(!memcmp(pe, "Extra", 5)) { + pe = _m3d_findarg(pe); + if(!*pe || *pe == '\r' || *pe == '\n') goto asciiend; + buff = (unsigned char*)_m3d_findnl(ptr); + k = ((uint32_t)((uintptr_t)buff - (uintptr_t)ptr) / 3) + 1; + i = model->numextra++; + model->extra = (m3dchunk_t**)M3D_REALLOC(model->extra, model->numextra * sizeof(m3dchunk_t*)); + if(!model->extra) goto memerr; + model->extra[i] = (m3dchunk_t*)M3D_MALLOC(k + sizeof(m3dchunk_t)); + if(!model->extra[i]) goto memerr; + memcpy(&model->extra[i]->magic, pe, 4); + model->extra[i]->length = sizeof(m3dchunk_t); + pe = (char*)model->extra[i] + sizeof(m3dchunk_t); + while(*ptr && *ptr != '\r' && *ptr != '\n') { + ptr = _m3d_gethex(ptr, &k); + *pe++ = (uint8_t)k; + model->extra[i]->length++; + } + } else + goto asciiend; + } + model->errcode = M3D_SUCCESS; +asciiend: + setlocale(LC_NUMERIC, ol); + goto postprocess; + } +#endif + /* Binary variant */ + len = ((m3dhdr_t*)data)->length - 8; + data += 8; + if(M3D_CHUNKMAGIC(data, 'P','R','V','W')) { + /* optional preview chunk */ + model->preview.length = ((m3dchunk_t*)data)->length; + model->preview.data = data + sizeof(m3dchunk_t); + data += model->preview.length; + len -= model->preview.length; + } + if(!M3D_CHUNKMAGIC(data, 'H','E','A','D')) { + buff = (unsigned char *)stbi_zlib_decode_malloc_guesssize_headerflag((const char*)data, len, 4096, (int*)&len, 1); + if(!buff || !len || !M3D_CHUNKMAGIC(buff, 'H','E','A','D')) { + if(buff) M3D_FREE(buff); + M3D_FREE(model); + return NULL; + } + buff = (unsigned char*)M3D_REALLOC(buff, len); + model->flags |= M3D_FLG_FREERAW; /* mark that we have to free the raw buffer */ + data = buff; +#ifdef M3D_PROFILING + gettimeofday(&tv1, NULL); + tvd.tv_sec = tv1.tv_sec - tv0.tv_sec; + tvd.tv_usec = tv1.tv_usec - tv0.tv_usec; + if(tvd.tv_usec < 0) { tvd.tv_sec--; tvd.tv_usec += 1000000L; } + printf(" Deflate model %ld.%06ld sec\n", tvd.tv_sec, tvd.tv_usec); + memcpy(&tv0, &tv1, sizeof(struct timeval)); +#endif + } + model->raw = (m3dhdr_t*)data; + end = data + len; + + /* parse header */ + data += sizeof(m3dhdr_t); + M3D_LOG(data); + model->name = (char*)data; + for(; data < end && *data; data++) {}; data++; + model->license = (char*)data; + for(; data < end && *data; data++) {}; data++; + model->author = (char*)data; + for(; data < end && *data; data++) {}; data++; + model->desc = (char*)data; + chunk = (unsigned char*)model->raw + model->raw->length; + model->scale = (M3D_FLOAT)model->raw->scale; + if(model->scale <= (M3D_FLOAT)0.0) model->scale = (M3D_FLOAT)1.0; + model->vc_s = 1 << ((model->raw->types >> 0) & 3); /* vertex coordinate size */ + model->vi_s = 1 << ((model->raw->types >> 2) & 3); /* vertex index size */ + model->si_s = 1 << ((model->raw->types >> 4) & 3); /* string offset size */ + model->ci_s = 1 << ((model->raw->types >> 6) & 3); /* color index size */ + model->ti_s = 1 << ((model->raw->types >> 8) & 3); /* tmap index size */ + model->bi_s = 1 << ((model->raw->types >>10) & 3); /* bone index size */ + model->nb_s = 1 << ((model->raw->types >>12) & 3); /* number of bones per vertex */ + model->sk_s = 1 << ((model->raw->types >>14) & 3); /* skin index size */ + model->fc_s = 1 << ((model->raw->types >>16) & 3); /* frame counter size */ + model->hi_s = 1 << ((model->raw->types >>18) & 3); /* shape index size */ + model->fi_s = 1 << ((model->raw->types >>20) & 3); /* face index size */ + model->vd_s = 1 << ((model->raw->types >>22) & 3); /* voxel dimension size */ + model->vp_s = 1 << ((model->raw->types >>24) & 3); /* voxel pixel size */ + if(model->ci_s == 8) model->ci_s = 0; /* optional indices */ + if(model->ti_s == 8) model->ti_s = 0; + if(model->bi_s == 8) model->bi_s = 0; + if(model->sk_s == 8) model->sk_s = 0; + if(model->fc_s == 8) model->fc_s = 0; + if(model->hi_s == 8) model->hi_s = 0; + if(model->fi_s == 8) model->fi_s = 0; + + /* variable limit checks */ + if(sizeof(M3D_FLOAT) == 4 && model->vc_s > 4) { + M3D_LOG("Double precision coordinates not supported, truncating to float..."); + model->errcode = M3D_ERR_TRUNC; + } + if((sizeof(M3D_INDEX) == 2 && (model->vi_s > 2 || model->si_s > 2 || model->ci_s > 2 || model->ti_s > 2 || + model->bi_s > 2 || model->sk_s > 2 || model->fc_s > 2 || model->hi_s > 2 || model->fi_s > 2)) || + (sizeof(M3D_VOXEL) == 2 && model->vp_s > 2)) { + M3D_LOG("32 bit indices not supported, unable to load model"); + M3D_FREE(model); + return NULL; + } + if(model->vi_s > 4 || model->si_s > 4) { + M3D_LOG("Invalid index size, unable to load model"); + M3D_FREE(model); + return NULL; + } + if(!M3D_CHUNKMAGIC(end - 4, 'O','M','D','3')) { + M3D_LOG("Missing end chunk"); + M3D_FREE(model); + return NULL; + } + if(model->nb_s > M3D_NUMBONE) { + M3D_LOG("Model has more bones per vertex than what importer was configured to support"); + model->errcode = M3D_ERR_TRUNC; + } + + /* look for inlined assets in advance, material and procedural chunks may need them */ + buff = chunk; + while(buff < end && !M3D_CHUNKMAGIC(buff, 'O','M','D','3')) { + data = buff; + len = ((m3dchunk_t*)data)->length; + buff += len; + if(len < sizeof(m3dchunk_t) || buff >= end) { + M3D_LOG("Invalid chunk size"); + break; + } + len -= sizeof(m3dchunk_t) + model->si_s; + + /* inlined assets */ + if(M3D_CHUNKMAGIC(data, 'A','S','E','T') && len > 0) { + M3D_LOG("Inlined asset"); + i = model->numinlined++; + model->inlined = (m3di_t*)M3D_REALLOC(model->inlined, model->numinlined * sizeof(m3di_t)); + if(!model->inlined) { +memerr: M3D_LOG("Out of memory"); + model->errcode = M3D_ERR_ALLOC; + return model; + } + data += sizeof(m3dchunk_t); + t = &model->inlined[i]; + M3D_GETSTR(t->name); + M3D_LOG(t->name); + t->data = (uint8_t*)data; + t->length = len; + } + } + + /* parse chunks */ + while(chunk < end && !M3D_CHUNKMAGIC(chunk, 'O','M','D','3')) { + data = chunk; + len = ((m3dchunk_t*)chunk)->length; + chunk += len; + if(len < sizeof(m3dchunk_t) || chunk >= end) { + M3D_LOG("Invalid chunk size"); + break; + } + len -= sizeof(m3dchunk_t); + + /* color map */ + if(M3D_CHUNKMAGIC(data, 'C','M','A','P')) { + M3D_LOG("Color map"); + if(model->cmap) { M3D_LOG("More color map chunks, should be unique"); model->errcode = M3D_ERR_CMAP; continue; } + if(!model->ci_s) { M3D_LOG("Color map chunk, shouldn't be any"); model->errcode = M3D_ERR_CMAP; continue; } + model->numcmap = len / sizeof(uint32_t); + model->cmap = (uint32_t*)(data + sizeof(m3dchunk_t)); + } else + /* texture map */ + if(M3D_CHUNKMAGIC(data, 'T','M','A','P')) { + M3D_LOG("Texture map"); + if(model->tmap) { M3D_LOG("More texture map chunks, should be unique"); model->errcode = M3D_ERR_TMAP; continue; } + if(!model->ti_s) { M3D_LOG("Texture map chunk, shouldn't be any"); model->errcode = M3D_ERR_TMAP; continue; } + reclen = model->vc_s + model->vc_s; + model->numtmap = len / reclen; + model->tmap = (m3dti_t*)M3D_MALLOC(model->numtmap * sizeof(m3dti_t)); + if(!model->tmap) goto memerr; + for(i = 0, data += sizeof(m3dchunk_t); data < chunk; i++) { + switch(model->vc_s) { + case 1: + model->tmap[i].u = (M3D_FLOAT)(data[0]) / (M3D_FLOAT)255.0; + model->tmap[i].v = (M3D_FLOAT)(data[1]) / (M3D_FLOAT)255.0; + break; + case 2: + model->tmap[i].u = (M3D_FLOAT)(*((int16_t*)(data+0))) / (M3D_FLOAT)65535.0; + model->tmap[i].v = (M3D_FLOAT)(*((int16_t*)(data+2))) / (M3D_FLOAT)65535.0; + break; + case 4: + model->tmap[i].u = (M3D_FLOAT)(*((float*)(data+0))); + model->tmap[i].v = (M3D_FLOAT)(*((float*)(data+4))); + break; + case 8: + model->tmap[i].u = (M3D_FLOAT)(*((double*)(data+0))); + model->tmap[i].v = (M3D_FLOAT)(*((double*)(data+8))); + break; + } + data += reclen; + } + } else + /* vertex list */ + if(M3D_CHUNKMAGIC(data, 'V','R','T','S')) { + M3D_LOG("Vertex list"); + if(model->vertex) { M3D_LOG("More vertex chunks, should be unique"); model->errcode = M3D_ERR_VRTS; continue; } + if(model->ci_s && model->ci_s < 4 && !model->cmap) model->errcode = M3D_ERR_CMAP; + reclen = model->ci_s + model->sk_s + 4 * model->vc_s; + model->numvertex = len / reclen; + model->vertex = (m3dv_t*)M3D_MALLOC(model->numvertex * sizeof(m3dv_t)); + if(!model->vertex) goto memerr; + memset(model->vertex, 0, model->numvertex * sizeof(m3dv_t)); + for(i = 0, data += sizeof(m3dchunk_t); data < chunk && i < model->numvertex; i++) { + switch(model->vc_s) { + case 1: + model->vertex[i].x = (M3D_FLOAT)((int8_t)data[0]) / (M3D_FLOAT)127.0; + model->vertex[i].y = (M3D_FLOAT)((int8_t)data[1]) / (M3D_FLOAT)127.0; + model->vertex[i].z = (M3D_FLOAT)((int8_t)data[2]) / (M3D_FLOAT)127.0; + model->vertex[i].w = (M3D_FLOAT)((int8_t)data[3]) / (M3D_FLOAT)127.0; + data += 4; + break; + case 2: + model->vertex[i].x = (M3D_FLOAT)(*((int16_t*)(data+0))) / (M3D_FLOAT)32767.0; + model->vertex[i].y = (M3D_FLOAT)(*((int16_t*)(data+2))) / (M3D_FLOAT)32767.0; + model->vertex[i].z = (M3D_FLOAT)(*((int16_t*)(data+4))) / (M3D_FLOAT)32767.0; + model->vertex[i].w = (M3D_FLOAT)(*((int16_t*)(data+6))) / (M3D_FLOAT)32767.0; + data += 8; + break; + case 4: + model->vertex[i].x = (M3D_FLOAT)(*((float*)(data+0))); + model->vertex[i].y = (M3D_FLOAT)(*((float*)(data+4))); + model->vertex[i].z = (M3D_FLOAT)(*((float*)(data+8))); + model->vertex[i].w = (M3D_FLOAT)(*((float*)(data+12))); + data += 16; + break; + case 8: + model->vertex[i].x = (M3D_FLOAT)(*((double*)(data+0))); + model->vertex[i].y = (M3D_FLOAT)(*((double*)(data+8))); + model->vertex[i].z = (M3D_FLOAT)(*((double*)(data+16))); + model->vertex[i].w = (M3D_FLOAT)(*((double*)(data+24))); + data += 32; + break; + } + switch(model->ci_s) { + case 1: model->vertex[i].color = model->cmap ? model->cmap[data[0]] : 0; data++; break; + case 2: model->vertex[i].color = model->cmap ? model->cmap[*((uint16_t*)data)] : 0; data += 2; break; + case 4: model->vertex[i].color = *((uint32_t*)data); data += 4; break; + /* case 8: break; */ + } + model->vertex[i].skinid = M3D_UNDEF; + data = _m3d_getidx(data, model->sk_s, &model->vertex[i].skinid); + } + } else + /* skeleton: bone hierarchy and skin */ + if(M3D_CHUNKMAGIC(data, 'B','O','N','E')) { + M3D_LOG("Skeleton"); + if(model->bone) { M3D_LOG("More bone chunks, should be unique"); model->errcode = M3D_ERR_BONE; continue; } + if(!model->bi_s) { M3D_LOG("Bone chunk, shouldn't be any"); model->errcode=M3D_ERR_BONE; continue; } + if(!model->vertex) { M3D_LOG("No vertex chunk before bones"); model->errcode = M3D_ERR_VRTS; break; } + data += sizeof(m3dchunk_t); + model->numbone = 0; + data = _m3d_getidx(data, model->bi_s, &model->numbone); + if(model->numbone) { + model->bone = (m3db_t*)M3D_MALLOC(model->numbone * sizeof(m3db_t)); + if(!model->bone) goto memerr; + } + model->numskin = 0; + data = _m3d_getidx(data, model->sk_s, &model->numskin); + /* read bone hierarchy */ + for(i = 0; data < chunk && i < model->numbone; i++) { + data = _m3d_getidx(data, model->bi_s, &model->bone[i].parent); + M3D_GETSTR(model->bone[i].name); + data = _m3d_getidx(data, model->vi_s, &model->bone[i].pos); + data = _m3d_getidx(data, model->vi_s, &model->bone[i].ori); + model->bone[i].numweight = 0; + model->bone[i].weight = NULL; + } + /* read skin definitions */ + if(model->numskin) { + model->skin = (m3ds_t*)M3D_MALLOC(model->numskin * sizeof(m3ds_t)); + if(!model->skin) goto memerr; + for(i = 0; data < chunk && i < model->numskin; i++) { + for(j = 0; j < M3D_NUMBONE; j++) { + model->skin[i].boneid[j] = M3D_UNDEF; + model->skin[i].weight[j] = (M3D_FLOAT)0.0; + } + memset(&weights, 0, sizeof(weights)); + if(model->nb_s == 1) weights[0] = 255; + else { + memcpy(&weights, data, model->nb_s); + data += model->nb_s; + } + for(j = 0, w = (M3D_FLOAT)0.0; j < (unsigned int)model->nb_s; j++) { + if(weights[j]) { + if(j >= M3D_NUMBONE) + data += model->bi_s; + else { + model->skin[i].weight[j] = (M3D_FLOAT)(weights[j]) / (M3D_FLOAT)255.0; + w += model->skin[i].weight[j]; + data = _m3d_getidx(data, model->bi_s, &model->skin[i].boneid[j]); + } + } + } + /* this can occur if model has more bones than what the importer is configured to handle */ + if(w != (M3D_FLOAT)1.0 && w != (M3D_FLOAT)0.0) { + for(j = 0; j < M3D_NUMBONE; j++) + model->skin[i].weight[j] /= w; + } + } + } + } else + /* material */ + if(M3D_CHUNKMAGIC(data, 'M','T','R','L')) { + data += sizeof(m3dchunk_t); + M3D_GETSTR(name); + M3D_LOG("Material"); + M3D_LOG(name); + if(model->ci_s < 4 && !model->numcmap) model->errcode = M3D_ERR_CMAP; + for(i = 0; i < model->nummaterial; i++) + if(!strcmp(name, model->material[i].name)) { + model->errcode = M3D_ERR_MTRL; + M3D_LOG("Multiple definitions for material"); + M3D_LOG(name); + name = NULL; + break; + } + if(name) { + i = model->nummaterial++; + if(model->flags & M3D_FLG_MTLLIB) { + m = model->material; + model->material = (m3dm_t*)M3D_MALLOC(model->nummaterial * sizeof(m3dm_t)); + if(!model->material) goto memerr; + memcpy(model->material, m, (model->nummaterial - 1) * sizeof(m3dm_t)); + if(model->texture) { + tx = model->texture; + model->texture = (m3dtx_t*)M3D_MALLOC(model->numtexture * sizeof(m3dtx_t)); + if(!model->texture) goto memerr; + memcpy(model->texture, tx, model->numtexture * sizeof(m3dm_t)); + } + model->flags &= ~M3D_FLG_MTLLIB; + } else { + model->material = (m3dm_t*)M3D_REALLOC(model->material, model->nummaterial * sizeof(m3dm_t)); + if(!model->material) goto memerr; + } + m = &model->material[i]; + m->numprop = 0; + m->name = name; + m->prop = (m3dp_t*)M3D_MALLOC((len / 2) * sizeof(m3dp_t)); + if(!m->prop) goto memerr; + while(data < chunk) { + i = m->numprop++; + m->prop[i].type = *data++; + m->prop[i].value.num = 0; + if(m->prop[i].type >= 128) + k = m3dpf_map; + else { + for(k = 256, j = 0; j < sizeof(m3d_propertytypes)/sizeof(m3d_propertytypes[0]); j++) + if(m->prop[i].type == m3d_propertytypes[j].id) { k = m3d_propertytypes[j].format; break; } + } + switch(k) { + case m3dpf_color: + switch(model->ci_s) { + case 1: m->prop[i].value.color = model->cmap ? model->cmap[data[0]] : 0; data++; break; + case 2: m->prop[i].value.color = model->cmap ? model->cmap[*((uint16_t*)data)] : 0; data += 2; break; + case 4: m->prop[i].value.color = *((uint32_t*)data); data += 4; break; + } + break; + + case m3dpf_uint8: m->prop[i].value.num = *data++; break; + case m3dpf_uint16:m->prop[i].value.num = *((uint16_t*)data); data += 2; break; + case m3dpf_uint32:m->prop[i].value.num = *((uint32_t*)data); data += 4; break; + case m3dpf_float: m->prop[i].value.fnum = *((float*)data); data += 4; break; + + case m3dpf_map: + M3D_GETSTR(name); + m->prop[i].value.textureid = _m3d_gettx(model, readfilecb, freecb, name); + if(model->errcode == M3D_ERR_ALLOC) goto memerr; + /* this error code only returned if readfilecb was specified */ + if(m->prop[i].value.textureid == M3D_UNDEF) { + M3D_LOG("Texture not found"); + M3D_LOG(m->name); + m->numprop--; + } + break; + + default: + M3D_LOG("Unknown material property in"); + M3D_LOG(m->name); + model->errcode = M3D_ERR_UNKPROP; + data = chunk; + break; + } + } + m->prop = (m3dp_t*)M3D_REALLOC(m->prop, m->numprop * sizeof(m3dp_t)); + if(!m->prop) goto memerr; + } + } else + /* face */ + if(M3D_CHUNKMAGIC(data, 'P','R','O','C')) { + /* procedural surface */ + M3D_GETSTR(name); + M3D_LOG("Procedural surface"); + M3D_LOG(name); + _m3d_getpr(model, readfilecb, freecb, name); + } else + if(M3D_CHUNKMAGIC(data, 'M','E','S','H')) { + M3D_LOG("Mesh data"); + if(!model->vertex) { M3D_LOG("No vertex chunk before mesh"); model->errcode = M3D_ERR_VRTS; } + /* mesh */ + data += sizeof(m3dchunk_t); + mi = M3D_UNDEF; +#ifdef M3D_VERTEXMAX + pi = M3D_UNDEF; +#endif + am = model->numface; + while(data < chunk) { + k = *data++; + n = k >> 4; + k &= 15; + if(!n) { + if(!k) { + /* use material */ + mi = M3D_UNDEF; + M3D_GETSTR(name); + if(name) { + for(j = 0; j < model->nummaterial; j++) + if(!strcmp(name, model->material[j].name)) { + mi = (M3D_INDEX)j; + break; + } + if(mi == M3D_UNDEF) model->errcode = M3D_ERR_MTRL; + } + } else { + /* use parameter */ + M3D_GETSTR(name); +#ifdef M3D_VERTEXMAX + pi = M3D_UNDEF; + if(name) { + for(j = 0; j < model->numparam; j++) + if(!strcmp(name, model->param[j].name)) { + pi = (M3D_INDEX)j; + break; + } + if(pi == M3D_UNDEF) { + pi = model->numparam++; + model->param = (m3dvi_t*)M3D_REALLOC(model->param, model->numparam * sizeof(m3dvi_t)); + if(!model->param) goto memerr; + model->param[pi].name = name; + model->param[pi].count = 0; + } + } +#endif + } + continue; + } + if(n != 3) { M3D_LOG("Only triangle mesh supported for now"); model->errcode = M3D_ERR_UNKMESH; return model; } + i = model->numface++; + if(model->numface > am) { + am = model->numface + 4095; + model->face = (m3df_t*)M3D_REALLOC(model->face, am * sizeof(m3df_t)); + if(!model->face) goto memerr; + } + memset(&model->face[i], 255, sizeof(m3df_t)); /* set all index to -1 by default */ + model->face[i].materialid = mi; +#ifdef M3D_VERTEXMAX + model->face[i].paramid = pi; +#endif + for(j = 0; data < chunk && j < n; j++) { + /* vertex */ + data = _m3d_getidx(data, model->vi_s, &model->face[i].vertex[j]); + /* texcoord */ + if(k & 1) + data = _m3d_getidx(data, model->ti_s, &model->face[i].texcoord[j]); + /* normal */ + if(k & 2) + data = _m3d_getidx(data, model->vi_s, &model->face[i].normal[j]); +#ifndef M3D_NONORMALS + if(model->face[i].normal[j] == M3D_UNDEF) neednorm = 1; +#endif + /* maximum */ + if(k & 4) +#ifdef M3D_VERTEXMAX + data = _m3d_getidx(data, model->vi_s, &model->face[i].vertmax[j]); +#else + data += model->vi_s; +#endif + } + if(j != n) { M3D_LOG("Invalid mesh"); model->numface = 0; model->errcode = M3D_ERR_UNKMESH; return model; } + } + model->face = (m3df_t*)M3D_REALLOC(model->face, model->numface * sizeof(m3df_t)); + } else + if(M3D_CHUNKMAGIC(data, 'V','O','X','T')) { + /* voxel types */ + M3D_LOG("Voxel types list"); + if(model->voxtype) { M3D_LOG("More voxel type chunks, should be unique"); model->errcode = M3D_ERR_VOXT; continue; } + if(model->ci_s && model->ci_s < 4 && !model->cmap) model->errcode = M3D_ERR_CMAP; + reclen = model->ci_s + model->si_s + 3 + model->sk_s; + k = len / reclen; + model->voxtype = (m3dvt_t*)M3D_MALLOC(k * sizeof(m3dvt_t)); + if(!model->voxtype) goto memerr; + memset(model->voxtype, 0, k * sizeof(m3dvt_t)); + model->numvoxtype = 0; + for(i = 0, data += sizeof(m3dchunk_t); data < chunk && i < k; i++) { + switch(model->ci_s) { + case 1: model->voxtype[i].color = model->cmap ? model->cmap[data[0]] : 0; data++; break; + case 2: model->voxtype[i].color = model->cmap ? model->cmap[*((uint16_t*)data)] : 0; data += 2; break; + case 4: model->voxtype[i].color = *((uint32_t*)data); data += 4; break; + /* case 8: break; */ + } + M3D_GETSTR(name); + model->voxtype[i].materialid = M3D_UNDEF; + if(name) { + model->voxtype[i].name = name; +/* + for(j = 0; j < model->nummaterial; j++) + if(!strcmp(name, model->material[j].name)) { + model->voxtype[i].materialid = (M3D_INDEX)j; + break; + } +*/ + } + j = *data++; + model->voxtype[i].rotation = j & 0xBF; + model->voxtype[i].voxshape = ((j & 0x40) << 2) | *data++; + model->voxtype[i].numitem = *data++; + model->voxtype[i].skinid = M3D_UNDEF; + data = _m3d_getidx(data, model->sk_s, &model->voxtype[i].skinid); + if(model->voxtype[i].numitem) { + model->voxtype[i].item = (m3dvi_t*)M3D_MALLOC(model->voxtype[i].numitem * sizeof(m3dvi_t)); + if(!model->voxtype[i].item) goto memerr; + memset(model->voxtype[i].item, 0, model->voxtype[i].numitem * sizeof(m3dvi_t)); + for(j = 0; j < model->voxtype[i].numitem; j++) { + model->voxtype[i].item[j].count = *data++; + model->voxtype[i].item[j].count |= (*data++) << 8; + M3D_GETSTR(model->voxtype[i].item[j].name); + } + } + } + model->numvoxtype = i; + if(k != model->numvoxtype) { + model->voxtype = (m3dvt_t*)M3D_REALLOC(model->voxtype, model->numvoxtype * sizeof(m3dvt_t)); + if(!model->voxtype) goto memerr; + } + } else + if(M3D_CHUNKMAGIC(data, 'V','O','X','D')) { + /* voxel data */ + data += sizeof(m3dchunk_t); + M3D_GETSTR(name); + M3D_LOG("Voxel Data Layer"); + M3D_LOG(name); + if(model->vd_s > 4 || model->vp_s > 2) { M3D_LOG("No voxel index size"); model->errcode = M3D_ERR_UNKVOX; continue; } + if(!model->voxtype) { M3D_LOG("No voxel type chunk before voxel data"); model->errcode = M3D_ERR_VOXT; } + i = model->numvoxel++; + model->voxel = (m3dvx_t*)M3D_REALLOC(model->voxel, model->numvoxel * sizeof(m3dvx_t)); + if(!model->voxel) goto memerr; + memset(&model->voxel[i], 0, sizeof(m3dvx_t)); + model->voxel[i].name = name; + switch(model->vd_s) { + case 1: + model->voxel[i].x = (int32_t)((int8_t)data[0]); + model->voxel[i].y = (int32_t)((int8_t)data[1]); + model->voxel[i].z = (int32_t)((int8_t)data[2]); + model->voxel[i].w = (uint32_t)(data[3]); + model->voxel[i].h = (uint32_t)(data[4]); + model->voxel[i].d = (uint32_t)(data[5]); + data += 6; + break; + case 2: + model->voxel[i].x = (int32_t)(*((int16_t*)(data+0))); + model->voxel[i].y = (int32_t)(*((int16_t*)(data+2))); + model->voxel[i].z = (int32_t)(*((int16_t*)(data+4))); + model->voxel[i].w = (uint32_t)(*((uint16_t*)(data+6))); + model->voxel[i].h = (uint32_t)(*((uint16_t*)(data+8))); + model->voxel[i].d = (uint32_t)(*((uint16_t*)(data+10))); + data += 12; + break; + case 4: + model->voxel[i].x = *((int32_t*)(data+0)); + model->voxel[i].y = *((int32_t*)(data+4)); + model->voxel[i].z = *((int32_t*)(data+8)); + model->voxel[i].w = *((uint32_t*)(data+12)); + model->voxel[i].h = *((uint32_t*)(data+16)); + model->voxel[i].d = *((uint32_t*)(data+20)); + data += 24; + break; + } + model->voxel[i].uncertain = *data++; + model->voxel[i].groupid = *data++; + k = model->voxel[i].w * model->voxel[i].h * model->voxel[i].d; + model->voxel[i].data = (M3D_VOXEL*)M3D_MALLOC(k * sizeof(M3D_VOXEL)); + if(!model->voxel[i].data) goto memerr; + memset(model->voxel[i].data, 0xff, k * sizeof(M3D_VOXEL)); + for(j = 0; data < chunk && j < k;) { + l = ((*data++) & 0x7F) + 1; + if(data[-1] & 0x80) { + data = _m3d_getidx(data, model->vp_s, &mi); + while(l-- && j < k) model->voxel[i].data[j++] = (M3D_VOXEL)mi; + } else + while(l-- && j < k) { + data = _m3d_getidx(data, model->vp_s, &mi); + model->voxel[i].data[j++] = (M3D_VOXEL)mi; + } + } + } else + if(M3D_CHUNKMAGIC(data, 'S','H','P','E')) { + /* mathematical shape */ + data += sizeof(m3dchunk_t); + M3D_GETSTR(name); + M3D_LOG("Mathematical Shape"); + M3D_LOG(name); + i = model->numshape++; + model->shape = (m3dh_t*)M3D_REALLOC(model->shape, model->numshape * sizeof(m3dh_t)); + if(!model->shape) goto memerr; + h = &model->shape[i]; + h->numcmd = 0; + h->cmd = NULL; + h->name = name; + h->group = M3D_UNDEF; + data = _m3d_getidx(data, model->bi_s, &h->group); + if(h->group != M3D_UNDEF && h->group >= model->numbone) { + M3D_LOG("Unknown bone id as shape group in shape"); + M3D_LOG(name); + h->group = M3D_UNDEF; + model->errcode = M3D_ERR_SHPE; + } + while(data < chunk) { + i = h->numcmd++; + h->cmd = (m3dc_t*)M3D_REALLOC(h->cmd, h->numcmd * sizeof(m3dc_t)); + if(!h->cmd) goto memerr; + h->cmd[i].type = *data++; + if(h->cmd[i].type & 0x80) { + h->cmd[i].type &= 0x7F; + h->cmd[i].type |= (*data++ << 7); + } + if(h->cmd[i].type >= (unsigned int)(sizeof(m3d_commandtypes)/sizeof(m3d_commandtypes[0]))) { + M3D_LOG("Unknown shape command in"); + M3D_LOG(h->name); + model->errcode = M3D_ERR_UNKCMD; + break; + } + cd = &m3d_commandtypes[h->cmd[i].type]; + h->cmd[i].arg = (uint32_t*)M3D_MALLOC(cd->p * sizeof(uint32_t)); + if(!h->cmd[i].arg) goto memerr; + memset(h->cmd[i].arg, 0, cd->p * sizeof(uint32_t)); + for(k = n = 0, l = cd->p; k < l; k++) + switch(cd->a[((k - n) % (cd->p - n)) + n]) { + case m3dcp_mi_t: + h->cmd[i].arg[k] = M3D_NOTDEFINED; + M3D_GETSTR(name); + if(name) { + for(n = 0; n < model->nummaterial; n++) + if(!strcmp(name, model->material[n].name)) { + h->cmd[i].arg[k] = n; + break; + } + if(h->cmd[i].arg[k] == M3D_NOTDEFINED) model->errcode = M3D_ERR_MTRL; + } + break; + case m3dcp_vc_t: + f = 0.0f; + switch(model->vc_s) { + case 1: f = (float)((int8_t)data[0]) / 127; break; + case 2: f = (float)(*((int16_t*)(data+0))) / 32767; break; + case 4: f = (float)(*((float*)(data+0))); break; + case 8: f = (float)(*((double*)(data+0))); break; + } + memcpy(&h->cmd[i].arg[k], &f, 4); + data += model->vc_s; + break; + case m3dcp_hi_t: data = _m3d_getidx(data, model->hi_s, &h->cmd[i].arg[k]); break; + case m3dcp_fi_t: data = _m3d_getidx(data, model->fi_s, &h->cmd[i].arg[k]); break; + case m3dcp_ti_t: data = _m3d_getidx(data, model->ti_s, &h->cmd[i].arg[k]); break; + case m3dcp_qi_t: + case m3dcp_vi_t: data = _m3d_getidx(data, model->vi_s, &h->cmd[i].arg[k]); break; + case m3dcp_i1_t: data = _m3d_getidx(data, 1, &h->cmd[i].arg[k]); break; + case m3dcp_i2_t: data = _m3d_getidx(data, 2, &h->cmd[i].arg[k]); break; + case m3dcp_i4_t: data = _m3d_getidx(data, 4, &h->cmd[i].arg[k]); break; + case m3dcp_va_t: data = _m3d_getidx(data, 4, &h->cmd[i].arg[k]); + n = k + 1; l += (h->cmd[i].arg[k] - 1) * (cd->p - k - 1); + h->cmd[i].arg = (uint32_t*)M3D_REALLOC(h->cmd[i].arg, l * sizeof(uint32_t)); + if(!h->cmd[i].arg) goto memerr; + memset(&h->cmd[i].arg[k + 1], 0, (l - k - 1) * sizeof(uint32_t)); + break; + } + } + } else + /* annotation label list */ + if(M3D_CHUNKMAGIC(data, 'L','B','L','S')) { + data += sizeof(m3dchunk_t); + M3D_GETSTR(name); + M3D_GETSTR(lang); + M3D_LOG("Label list"); + if(name) { M3D_LOG(name); } + if(lang) { M3D_LOG(lang); } + if(model->ci_s && model->ci_s < 4 && !model->cmap) model->errcode = M3D_ERR_CMAP; + k = 0; + switch(model->ci_s) { + case 1: k = model->cmap ? model->cmap[data[0]] : 0; data++; break; + case 2: k = model->cmap ? model->cmap[*((uint16_t*)data)] : 0; data += 2; break; + case 4: k = *((uint32_t*)data); data += 4; break; + /* case 8: break; */ + } + reclen = model->vi_s + model->si_s; + i = model->numlabel; model->numlabel += len / reclen; + model->label = (m3dl_t*)M3D_REALLOC(model->label, model->numlabel * sizeof(m3dl_t)); + if(!model->label) goto memerr; + memset(&model->label[i], 0, (model->numlabel - i) * sizeof(m3dl_t)); + for(; data < chunk && i < model->numlabel; i++) { + model->label[i].name = name; + model->label[i].lang = lang; + model->label[i].color = k; + data = _m3d_getidx(data, model->vi_s, &model->label[i].vertexid); + M3D_GETSTR(model->label[i].text); + } + } else + /* action */ + if(M3D_CHUNKMAGIC(data, 'A','C','T','N')) { + M3D_LOG("Action"); + i = model->numaction++; + model->action = (m3da_t*)M3D_REALLOC(model->action, model->numaction * sizeof(m3da_t)); + if(!model->action) goto memerr; + a = &model->action[i]; + data += sizeof(m3dchunk_t); + M3D_GETSTR(a->name); + M3D_LOG(a->name); + a->numframe = *((uint16_t*)data); data += 2; + if(a->numframe < 1) { + model->numaction--; + } else { + a->durationmsec = *((uint32_t*)data); data += 4; + a->frame = (m3dfr_t*)M3D_MALLOC(a->numframe * sizeof(m3dfr_t)); + if(!a->frame) goto memerr; + for(i = 0; data < chunk && i < a->numframe; i++) { + a->frame[i].msec = *((uint32_t*)data); data += 4; + a->frame[i].numtransform = 0; a->frame[i].transform = NULL; + data = _m3d_getidx(data, model->fc_s, &a->frame[i].numtransform); + if(a->frame[i].numtransform > 0) { + a->frame[i].transform = (m3dtr_t*)M3D_MALLOC(a->frame[i].numtransform * sizeof(m3dtr_t)); + for(j = 0; j < a->frame[i].numtransform; j++) { + data = _m3d_getidx(data, model->bi_s, &a->frame[i].transform[j].boneid); + data = _m3d_getidx(data, model->vi_s, &a->frame[i].transform[j].pos); + data = _m3d_getidx(data, model->vi_s, &a->frame[i].transform[j].ori); + } + } + } + } + } else { + i = model->numextra++; + model->extra = (m3dchunk_t**)M3D_REALLOC(model->extra, model->numextra * sizeof(m3dchunk_t*)); + if(!model->extra) goto memerr; + model->extra[i] = (m3dchunk_t*)data; + } + } + /* calculate normals, normalize skin weights, create bone/vertex cross-references and calculate transform matrices */ +#ifdef M3D_ASCII +postprocess: +#endif + if(model) { + M3D_LOG("Post-process"); +#ifdef M3D_PROFILING + gettimeofday(&tv1, NULL); + tvd.tv_sec = tv1.tv_sec - tv0.tv_sec; + tvd.tv_usec = tv1.tv_usec - tv0.tv_usec; + if(tvd.tv_usec < 0) { tvd.tv_sec--; tvd.tv_usec += 1000000L; } + printf(" Parsing chunks %ld.%06ld sec\n", tvd.tv_sec, tvd.tv_usec); +#endif +#ifndef M3D_NOVOXELS + if(model->numvoxel && model->voxel) { + M3D_LOG("Converting voxels into vertices and mesh"); + /* add normals */ + enorm = model->numvertex; model->numvertex += 6; + model->vertex = (m3dv_t*)M3D_REALLOC(model->vertex, model->numvertex * sizeof(m3dv_t)); + if(!model->vertex) goto memerr; + memset(&model->vertex[enorm], 0, 6 * sizeof(m3dv_t)); + for(l = 0; l < 6; l++) + model->vertex[enorm+l].skinid = M3D_UNDEF; + model->vertex[enorm+0].y = (M3D_FLOAT)-1.0; + model->vertex[enorm+1].z = (M3D_FLOAT)-1.0; + model->vertex[enorm+2].x = (M3D_FLOAT)-1.0; + model->vertex[enorm+3].y = (M3D_FLOAT)1.0; + model->vertex[enorm+4].z = (M3D_FLOAT)1.0; + model->vertex[enorm+5].x = (M3D_FLOAT)1.0; + /* this is a fast, not so memory efficient version, only basic face culling used */ + min_x = min_y = min_z = 2147483647L; + max_x = max_y = max_z = -2147483647L; + for(i = 0; i < model->numvoxel; i++) { + if(model->voxel[i].x + (int32_t)model->voxel[i].w > max_x) max_x = model->voxel[i].x + (int32_t)model->voxel[i].w; + if(model->voxel[i].x < min_x) min_x = model->voxel[i].x; + if(model->voxel[i].y + (int32_t)model->voxel[i].h > max_y) max_y = model->voxel[i].y + (int32_t)model->voxel[i].h; + if(model->voxel[i].y < min_y) min_y = model->voxel[i].y; + if(model->voxel[i].z + (int32_t)model->voxel[i].d > max_z) max_z = model->voxel[i].z + (int32_t)model->voxel[i].d; + if(model->voxel[i].z < min_z) min_z = model->voxel[i].z; + } + i = (-min_x > max_x ? -min_x : max_x); + j = (-min_y > max_y ? -min_y : max_y); + k = (-min_z > max_z ? -min_z : max_z); + if(j > i) i = j; + if(k > i) i = k; + if(i <= 1) i = 1; + w = (M3D_FLOAT)1.0 / (M3D_FLOAT)i; + if(i >= 254) model->vc_s = 2; + if(i >= 65534) model->vc_s = 4; + for(i = 0; i < model->numvoxel; i++) { + sx = model->voxel[i].w; sz = model->voxel[i].d; sy = model->voxel[i].h; + for(y = 0, j = 0; y < sy; y++) + for(z = 0; z < sz; z++) + for(x = 0; x < sx; x++, j++) + if(model->voxel[i].data[j] < model->numvoxtype) { + k = 0; + /* 16__32 ____ + * /| /| /|2 /| + *64_128 | /_8_/ 32 + * | 1_|_2 |4|_|_| + * |/ |/ |/ 1|/ + * 4___8 |16_| */ + k = n = am = 0; + if(!y || model->voxel[i].data[j - sx*sz] >= model->numvoxtype) { n++; am |= 1; k |= 1|2|4|8; } + if(!z || model->voxel[i].data[j - sx] >= model->numvoxtype) { n++; am |= 2; k |= 1|2|16|32; } + if(!x || model->voxel[i].data[j - 1] >= model->numvoxtype) { n++; am |= 4; k |= 1|4|16|64; } + if(y == sy-1 || model->voxel[i].data[j + sx*sz] >= model->numvoxtype) { n++; am |= 8; k |= 16|32|64|128; } + if(z == sz-1 || model->voxel[i].data[j + sx] >= model->numvoxtype) { n++; am |= 16; k |= 4|8|64|128; } + if(x == sx-1 || model->voxel[i].data[j + 1] >= model->numvoxtype) { n++; am |= 32; k |= 2|8|32|128; } + if(k) { + memset(edge, 255, sizeof(edge)); + for(l = 0, len = 1, reclen = model->numvertex; l < 8; l++, len <<= 1) + if(k & len) edge[l] = model->numvertex++; + model->vertex = (m3dv_t*)M3D_REALLOC(model->vertex, model->numvertex * sizeof(m3dv_t)); + if(!model->vertex) goto memerr; + memset(&model->vertex[reclen], 0, (model->numvertex-reclen) * sizeof(m3dv_t)); + for(l = reclen; l < model->numvertex; l++) { + model->vertex[l].skinid = model->voxtype[model->voxel[i].data[j]].skinid; + model->vertex[l].color = model->voxtype[model->voxel[i].data[j]].color; + } + l = reclen; + if(k & 1) { + model->vertex[l].x = (model->voxel[i].x + x) * w; + model->vertex[l].y = (model->voxel[i].y + y) * w; + model->vertex[l].z = (model->voxel[i].z + z) * w; + l++; + } + if(k & 2) { + model->vertex[l].x = (model->voxel[i].x + x + 1) * w; + model->vertex[l].y = (model->voxel[i].y + y) * w; + model->vertex[l].z = (model->voxel[i].z + z) * w; + l++; + } + if(k & 4) { + model->vertex[l].x = (model->voxel[i].x + x) * w; + model->vertex[l].y = (model->voxel[i].y + y) * w; + model->vertex[l].z = (model->voxel[i].z + z + 1) * w; + l++; + } + if(k & 8) { + model->vertex[l].x = (model->voxel[i].x + x + 1) * w; + model->vertex[l].y = (model->voxel[i].y + y) * w; + model->vertex[l].z = (model->voxel[i].z + z + 1) * w; + l++; + } + if(k & 16) { + model->vertex[l].x = (model->voxel[i].x + x) * w; + model->vertex[l].y = (model->voxel[i].y + y + 1) * w; + model->vertex[l].z = (model->voxel[i].z + z) * w; + l++; + } + if(k & 32) { + model->vertex[l].x = (model->voxel[i].x + x + 1) * w; + model->vertex[l].y = (model->voxel[i].y + y + 1) * w; + model->vertex[l].z = (model->voxel[i].z + z) * w; + l++; + } + if(k & 64) { + model->vertex[l].x = (model->voxel[i].x + x) * w; + model->vertex[l].y = (model->voxel[i].y + y + 1) * w; + model->vertex[l].z = (model->voxel[i].z + z + 1) * w; + l++; + } + if(k & 128) { + model->vertex[l].x = (model->voxel[i].x + x + 1) * w; + model->vertex[l].y = (model->voxel[i].y + y + 1) * w; + model->vertex[l].z = (model->voxel[i].z + z + 1) * w; + l++; + } + n <<= 1; + l = model->numface; model->numface += n; + model->face = (m3df_t*)M3D_REALLOC(model->face, model->numface * sizeof(m3df_t)); + if(!model->face) goto memerr; + memset(&model->face[l], 255, n * sizeof(m3df_t)); + for(reclen = l; reclen < model->numface; reclen++) + model->face[reclen].materialid = model->voxtype[model->voxel[i].data[j]].materialid; + if(am & 1) { /* bottom */ + model->face[l].vertex[0] = edge[0]; model->face[l].vertex[1] = edge[1]; model->face[l].vertex[2] = edge[2]; + model->face[l+1].vertex[0] = edge[2]; model->face[l+1].vertex[1] = edge[1]; model->face[l+1].vertex[2] = edge[3]; + model->face[l].normal[0] = model->face[l].normal[1] = model->face[l].normal[2] = + model->face[l+1].normal[0] = model->face[l+1].normal[1] = model->face[l+1].normal[2] = enorm; + l += 2; + } + if(am & 2) { /* north */ + model->face[l].vertex[0] = edge[0]; model->face[l].vertex[1] = edge[4]; model->face[l].vertex[2] = edge[1]; + model->face[l+1].vertex[0] = edge[1]; model->face[l+1].vertex[1] = edge[4]; model->face[l+1].vertex[2] = edge[5]; + model->face[l].normal[0] = model->face[l].normal[1] = model->face[l].normal[2] = + model->face[l+1].normal[0] = model->face[l+1].normal[1] = model->face[l+1].normal[2] = enorm+1; + l += 2; + } + if(am & 4) { /* west */ + model->face[l].vertex[0] = edge[0]; model->face[l].vertex[1] = edge[2]; model->face[l].vertex[2] = edge[4]; + model->face[l+1].vertex[0] = edge[2]; model->face[l+1].vertex[1] = edge[6]; model->face[l+1].vertex[2] = edge[4]; + model->face[l].normal[0] = model->face[l].normal[1] = model->face[l].normal[2] = + model->face[l+1].normal[0] = model->face[l+1].normal[1] = model->face[l+1].normal[2] = enorm+2; + l += 2; + } + if(am & 8) { /* top */ + model->face[l].vertex[0] = edge[4]; model->face[l].vertex[1] = edge[6]; model->face[l].vertex[2] = edge[5]; + model->face[l+1].vertex[0] = edge[5]; model->face[l+1].vertex[1] = edge[6]; model->face[l+1].vertex[2] = edge[7]; + model->face[l].normal[0] = model->face[l].normal[1] = model->face[l].normal[2] = + model->face[l+1].normal[0] = model->face[l+1].normal[1] = model->face[l+1].normal[2] = enorm+3; + l += 2; + } + if(am & 16) { /* south */ + model->face[l].vertex[0] = edge[2]; model->face[l].vertex[1] = edge[7]; model->face[l].vertex[2] = edge[6]; + model->face[l+1].vertex[0] = edge[7]; model->face[l+1].vertex[1] = edge[2]; model->face[l+1].vertex[2] = edge[3]; + model->face[l].normal[0] = model->face[l].normal[1] = model->face[l].normal[2] = + model->face[l+1].normal[0] = model->face[l+1].normal[1] = model->face[l+1].normal[2] = enorm+4; + l += 2; + } + if(am & 32) { /* east */ + model->face[l].vertex[0] = edge[1]; model->face[l].vertex[1] = edge[5]; model->face[l].vertex[2] = edge[7]; + model->face[l+1].vertex[0] = edge[1]; model->face[l+1].vertex[1] = edge[7]; model->face[l+1].vertex[2] = edge[3]; + model->face[l].normal[0] = model->face[l].normal[1] = model->face[l].normal[2] = + model->face[l+1].normal[0] = model->face[l+1].normal[1] = model->face[l+1].normal[2] = enorm+5; + l += 2; + } + } + } + } + } +#endif +#ifndef M3D_NONORMALS + if(model->numface && model->face && neednorm) { + /* if they are missing, calculate triangle normals into a temporary buffer */ + norm = (m3dv_t*)M3D_MALLOC(model->numface * sizeof(m3dv_t)); + if(!norm) goto memerr; + for(i = 0, n = model->numvertex; i < model->numface; i++) + if(model->face[i].normal[0] == M3D_UNDEF) { + v0 = &model->vertex[model->face[i].vertex[0]]; + v1 = &model->vertex[model->face[i].vertex[1]]; + v2 = &model->vertex[model->face[i].vertex[2]]; + va.x = v1->x - v0->x; va.y = v1->y - v0->y; va.z = v1->z - v0->z; + vb.x = v2->x - v0->x; vb.y = v2->y - v0->y; vb.z = v2->z - v0->z; + v0 = &norm[i]; + v0->x = (va.y * vb.z) - (va.z * vb.y); + v0->y = (va.z * vb.x) - (va.x * vb.z); + v0->z = (va.x * vb.y) - (va.y * vb.x); + w = _m3d_rsq((v0->x * v0->x) + (v0->y * v0->y) + (v0->z * v0->z)); + v0->x *= w; v0->y *= w; v0->z *= w; + model->face[i].normal[0] = model->face[i].vertex[0] + n; + model->face[i].normal[1] = model->face[i].vertex[1] + n; + model->face[i].normal[2] = model->face[i].vertex[2] + n; + } + /* this is the fast way, we don't care if a normal is repeated in model->vertex */ + M3D_LOG("Generating normals"); + model->flags |= M3D_FLG_GENNORM; + model->numvertex <<= 1; + model->vertex = (m3dv_t*)M3D_REALLOC(model->vertex, model->numvertex * sizeof(m3dv_t)); + if(!model->vertex) goto memerr; + memset(&model->vertex[n], 0, n * sizeof(m3dv_t)); + for(i = 0; i < model->numface; i++) + for(j = 0; j < 3; j++) { + v0 = &model->vertex[model->face[i].vertex[j] + n]; + v0->x += norm[i].x; + v0->y += norm[i].y; + v0->z += norm[i].z; + } + /* for each vertex, take the average of the temporary normals and use that */ + for(i = 0, v0 = &model->vertex[n]; i < n; i++, v0++) { + w = _m3d_rsq((v0->x * v0->x) + (v0->y * v0->y) + (v0->z * v0->z)); + v0->x *= w; v0->y *= w; v0->z *= w; + v0->skinid = M3D_UNDEF; + } + M3D_FREE(norm); + } +#endif + if(model->numbone && model->bone && model->numskin && model->skin && model->numvertex && model->vertex) { +#ifndef M3D_NOWEIGHTS + M3D_LOG("Generating weight cross-reference"); + for(i = 0; i < model->numvertex; i++) { + if(model->vertex[i].skinid < model->numskin) { + sk = &model->skin[model->vertex[i].skinid]; + w = (M3D_FLOAT)0.0; + for(j = 0; j < M3D_NUMBONE && sk->boneid[j] != M3D_UNDEF && sk->weight[j] > (M3D_FLOAT)0.0; j++) + w += sk->weight[j]; + for(j = 0; j < M3D_NUMBONE && sk->boneid[j] != M3D_UNDEF && sk->weight[j] > (M3D_FLOAT)0.0; j++) { + sk->weight[j] /= w; + b = &model->bone[sk->boneid[j]]; + k = b->numweight++; + b->weight = (m3dw_t*)M3D_REALLOC(b->weight, b->numweight * sizeof(m3da_t)); + if(!b->weight) goto memerr; + b->weight[k].vertexid = i; + b->weight[k].weight = sk->weight[j]; + } + } + } +#endif +#ifndef M3D_NOANIMATION + M3D_LOG("Calculating bone transformation matrices"); + for(i = 0; i < model->numbone; i++) { + b = &model->bone[i]; + if(model->bone[i].parent == M3D_UNDEF) { + _m3d_mat((M3D_FLOAT*)&b->mat4, &model->vertex[b->pos], &model->vertex[b->ori]); + } else { + _m3d_mat((M3D_FLOAT*)&r, &model->vertex[b->pos], &model->vertex[b->ori]); + _m3d_mul((M3D_FLOAT*)&b->mat4, (M3D_FLOAT*)&model->bone[b->parent].mat4, (M3D_FLOAT*)&r); + } + } + for(i = 0; i < model->numbone; i++) + _m3d_inv((M3D_FLOAT*)&model->bone[i].mat4); +#endif + } +#ifdef M3D_PROFILING + gettimeofday(&tv0, NULL); + tvd.tv_sec = tv0.tv_sec - tv1.tv_sec; + tvd.tv_usec = tv0.tv_usec - tv1.tv_usec; + if(tvd.tv_usec < 0) { tvd.tv_sec--; tvd.tv_usec += 1000000L; } + printf(" Post-process %ld.%06ld sec\n", tvd.tv_sec, tvd.tv_usec); +#endif + } + return model; +} + +/** + * Calculates skeletons for animation frames, returns a working copy (should be freed after use) + */ +m3dtr_t *m3d_frame(m3d_t *model, M3D_INDEX actionid, M3D_INDEX frameid, m3dtr_t *skeleton) +{ + unsigned int i; + M3D_INDEX s = frameid; + m3dfr_t *fr; + + if(!model || !model->numbone || !model->bone || (actionid != M3D_UNDEF && (!model->action || + actionid >= model->numaction || frameid >= model->action[actionid].numframe))) { + model->errcode = M3D_ERR_UNKFRAME; + return skeleton; + } + model->errcode = M3D_SUCCESS; + if(!skeleton) { + skeleton = (m3dtr_t*)M3D_MALLOC(model->numbone * sizeof(m3dtr_t)); + if(!skeleton) { + model->errcode = M3D_ERR_ALLOC; + return NULL; + } + goto gen; + } + if(actionid == M3D_UNDEF || !frameid) { +gen: s = 0; + for(i = 0; i < model->numbone; i++) { + skeleton[i].boneid = i; + skeleton[i].pos = model->bone[i].pos; + skeleton[i].ori = model->bone[i].ori; + } + } + if(actionid < model->numaction && (frameid || !model->action[actionid].frame[0].msec)) { + for(; s <= frameid; s++) { + fr = &model->action[actionid].frame[s]; + for(i = 0; i < fr->numtransform; i++) { + skeleton[fr->transform[i].boneid].pos = fr->transform[i].pos; + skeleton[fr->transform[i].boneid].ori = fr->transform[i].ori; + } + } + } + return skeleton; +} + +#ifndef M3D_NOANIMATION +/** + * Returns interpolated animation-pose, a working copy (should be freed after use) + */ +m3db_t *m3d_pose(m3d_t *model, M3D_INDEX actionid, uint32_t msec) +{ + unsigned int i, j, l; + M3D_FLOAT r[16], t, c, d, s; + m3db_t *ret; + m3dv_t *v, *p, *f; + m3dtr_t *tmp; + m3dfr_t *fr; + + if(!model || !model->numbone || !model->bone) { + model->errcode = M3D_ERR_UNKFRAME; + return NULL; + } + ret = (m3db_t*)M3D_MALLOC(model->numbone * sizeof(m3db_t)); + if(!ret) { + model->errcode = M3D_ERR_ALLOC; + return NULL; + } + memcpy(ret, model->bone, model->numbone * sizeof(m3db_t)); + for(i = 0; i < model->numbone; i++) + _m3d_inv((M3D_FLOAT*)&ret[i].mat4); + if(!model->action || actionid >= model->numaction) { + model->errcode = M3D_ERR_UNKFRAME; + return ret; + } + msec %= model->action[actionid].durationmsec; + model->errcode = M3D_SUCCESS; + fr = &model->action[actionid].frame[0]; + for(j = l = 0; j < model->action[actionid].numframe && model->action[actionid].frame[j].msec <= msec; j++) { + fr = &model->action[actionid].frame[j]; + l = fr->msec; + for(i = 0; i < fr->numtransform; i++) { + ret[fr->transform[i].boneid].pos = fr->transform[i].pos; + ret[fr->transform[i].boneid].ori = fr->transform[i].ori; + } + } + if(l != msec) { + model->vertex = (m3dv_t*)M3D_REALLOC(model->vertex, (model->numvertex + 2 * model->numbone) * sizeof(m3dv_t)); + if(!model->vertex) { + free(ret); + model->errcode = M3D_ERR_ALLOC; + return NULL; + } + tmp = (m3dtr_t*)M3D_MALLOC(model->numbone * sizeof(m3dtr_t)); + if(tmp) { + for(i = 0; i < model->numbone; i++) { + tmp[i].pos = ret[i].pos; + tmp[i].ori = ret[i].ori; + } + fr = &model->action[actionid].frame[j % model->action[actionid].numframe]; + t = l >= fr->msec ? (M3D_FLOAT)1.0 : (M3D_FLOAT)(msec - l) / (M3D_FLOAT)(fr->msec - l); + for(i = 0; i < fr->numtransform; i++) { + tmp[fr->transform[i].boneid].pos = fr->transform[i].pos; + tmp[fr->transform[i].boneid].ori = fr->transform[i].ori; + } + for(i = 0, j = model->numvertex; i < model->numbone; i++) { + /* interpolation of position */ + if(ret[i].pos != tmp[i].pos) { + p = &model->vertex[ret[i].pos]; + f = &model->vertex[tmp[i].pos]; + v = &model->vertex[j]; + v->x = p->x + t * (f->x - p->x); + v->y = p->y + t * (f->y - p->y); + v->z = p->z + t * (f->z - p->z); + ret[i].pos = j++; + } + /* interpolation of orientation */ + if(ret[i].ori != tmp[i].ori) { + p = &model->vertex[ret[i].ori]; + f = &model->vertex[tmp[i].ori]; + v = &model->vertex[j]; + d = p->w * f->w + p->x * f->x + p->y * f->y + p->z * f->z; + if(d < 0) { d = -d; s = (M3D_FLOAT)-1.0; } else s = (M3D_FLOAT)1.0; +#if 0 + /* don't use SLERP, requires two more variables, libm linkage and it is slow (but nice) */ + a = (M3D_FLOAT)1.0 - t; b = t; + if(d < (M3D_FLOAT)0.999999) { c = acosf(d); b = 1 / sinf(c); a = sinf(a * c) * b; b *= sinf(t * c) * s; } + v->x = p->x * a + f->x * b; + v->y = p->y * a + f->y * b; + v->z = p->z * a + f->z * b; + v->w = p->w * a + f->w * b; +#else + /* approximated NLERP, original approximation by Arseny Kapoulkine, heavily optimized by me */ + c = t - (M3D_FLOAT)0.5; t += t * c * (t - (M3D_FLOAT)1.0) * (((M3D_FLOAT)1.0904 + d * ((M3D_FLOAT)-3.2452 + + d * ((M3D_FLOAT)3.55645 - d * (M3D_FLOAT)1.43519))) * c * c + ((M3D_FLOAT)0.848013 + d * + ((M3D_FLOAT)-1.06021 + d * (M3D_FLOAT)0.215638))); + v->x = p->x + t * (s * f->x - p->x); + v->y = p->y + t * (s * f->y - p->y); + v->z = p->z + t * (s * f->z - p->z); + v->w = p->w + t * (s * f->w - p->w); + d = _m3d_rsq(v->w * v->w + v->x * v->x + v->y * v->y + v->z * v->z); + v->x *= d; v->y *= d; v->z *= d; v->w *= d; +#endif + ret[i].ori = j++; + } + } + M3D_FREE(tmp); + } + } + for(i = 0; i < model->numbone; i++) { + if(ret[i].parent == M3D_UNDEF) { + _m3d_mat((M3D_FLOAT*)&ret[i].mat4, &model->vertex[ret[i].pos], &model->vertex[ret[i].ori]); + } else { + _m3d_mat((M3D_FLOAT*)&r, &model->vertex[ret[i].pos], &model->vertex[ret[i].ori]); + _m3d_mul((M3D_FLOAT*)&ret[i].mat4, (M3D_FLOAT*)&ret[ret[i].parent].mat4, (M3D_FLOAT*)&r); + } + } + return ret; +} + +#endif /* M3D_NOANIMATION */ + +#endif /* M3D_IMPLEMENTATION */ + +#if !defined(M3D_NODUP) && (!defined(M3D_NOIMPORTER) || defined(M3D_EXPORTER)) +/** + * Free the in-memory model + */ +void m3d_free(m3d_t *model) +{ + unsigned int i, j; + + if(!model) return; +#ifdef M3D_ASCII + /* if model imported from ASCII, we have to free all strings as well */ + if(model->flags & M3D_FLG_FREESTR) { + if(model->name) M3D_FREE(model->name); + if(model->license) M3D_FREE(model->license); + if(model->author) M3D_FREE(model->author); + if(model->desc) M3D_FREE(model->desc); + if(model->bone) + for(i = 0; i < model->numbone; i++) + if(model->bone[i].name) + M3D_FREE(model->bone[i].name); + if(model->shape) + for(i = 0; i < model->numshape; i++) + if(model->shape[i].name) + M3D_FREE(model->shape[i].name); + if(model->numvoxtype) + for(i = 0; i < model->numvoxtype; i++) { + if(model->voxtype[i].name) + M3D_FREE(model->voxtype[i].name); + for(j = 0; j < model->voxtype[i].numitem; j++) + if(model->voxtype[i].item[j].name) + M3D_FREE(model->voxtype[i].item[j].name); + } + if(model->numvoxel) + for(i = 0; i < model->numvoxel; i++) + if(model->voxel[i].name) + M3D_FREE(model->voxel[i].name); + if(model->material) + for(i = 0; i < model->nummaterial; i++) + if(model->material[i].name) + M3D_FREE(model->material[i].name); + if(model->action) + for(i = 0; i < model->numaction; i++) + if(model->action[i].name) + M3D_FREE(model->action[i].name); + if(model->texture) + for(i = 0; i < model->numtexture; i++) + if(model->texture[i].name) + M3D_FREE(model->texture[i].name); + if(model->inlined) + for(i = 0; i < model->numinlined; i++) { + if(model->inlined[i].name) + M3D_FREE(model->inlined[i].name); + if(model->inlined[i].data) + M3D_FREE(model->inlined[i].data); + } + if(model->extra) + for(i = 0; i < model->numextra; i++) + if(model->extra[i]) + M3D_FREE(model->extra[i]); + if(model->label) + for(i = 0; i < model->numlabel; i++) { + if(model->label[i].name) { + for(j = i + 1; j < model->numlabel; j++) + if(model->label[j].name == model->label[i].name) + model->label[j].name = NULL; + M3D_FREE(model->label[i].name); + } + if(model->label[i].lang) { + for(j = i + 1; j < model->numlabel; j++) + if(model->label[j].lang == model->label[i].lang) + model->label[j].lang = NULL; + M3D_FREE(model->label[i].lang); + } + if(model->label[i].text) + M3D_FREE(model->label[i].text); + } + if(model->preview.data) + M3D_FREE(model->preview.data); + } +#endif + if(model->flags & M3D_FLG_FREERAW) M3D_FREE(model->raw); + + if(model->tmap) M3D_FREE(model->tmap); + if(model->bone) { + for(i = 0; i < model->numbone; i++) + if(model->bone[i].weight) + M3D_FREE(model->bone[i].weight); + M3D_FREE(model->bone); + } + if(model->skin) M3D_FREE(model->skin); + if(model->vertex) M3D_FREE(model->vertex); + if(model->face) M3D_FREE(model->face); + if(model->voxtype) { + for(i = 0; i < model->numvoxtype; i++) + if(model->voxtype[i].item) + M3D_FREE(model->voxtype[i].item); + M3D_FREE(model->voxtype); + } + if(model->voxel) { + for(i = 0; i < model->numvoxel; i++) + if(model->voxel[i].data) + M3D_FREE(model->voxel[i].data); + M3D_FREE(model->voxel); + } + if(model->shape) { + for(i = 0; i < model->numshape; i++) { + if(model->shape[i].cmd) { + for(j = 0; j < model->shape[i].numcmd; j++) + if(model->shape[i].cmd[j].arg) M3D_FREE(model->shape[i].cmd[j].arg); + M3D_FREE(model->shape[i].cmd); + } + } + M3D_FREE(model->shape); + } + if(model->material && !(model->flags & M3D_FLG_MTLLIB)) { + for(i = 0; i < model->nummaterial; i++) + if(model->material[i].prop) M3D_FREE(model->material[i].prop); + M3D_FREE(model->material); + } + if(model->texture) { + for(i = 0; i < model->numtexture; i++) + if(model->texture[i].d) M3D_FREE(model->texture[i].d); + M3D_FREE(model->texture); + } + if(model->action) { + for(i = 0; i < model->numaction; i++) { + if(model->action[i].frame) { + for(j = 0; j < model->action[i].numframe; j++) + if(model->action[i].frame[j].transform) M3D_FREE(model->action[i].frame[j].transform); + M3D_FREE(model->action[i].frame); + } + } + M3D_FREE(model->action); + } + if(model->label) M3D_FREE(model->label); + if(model->inlined) M3D_FREE(model->inlined); + if(model->extra) M3D_FREE(model->extra); + free(model); +} +#endif + +#ifdef M3D_EXPORTER +typedef struct { + char *str; + uint32_t offs; +} m3dstr_t; + +typedef struct { + m3dti_t data; + M3D_INDEX oldidx; + M3D_INDEX newidx; +} m3dtisave_t; + +typedef struct { + m3dv_t data; + M3D_INDEX oldidx; + M3D_INDEX newidx; + unsigned char norm; +} m3dvsave_t; + +typedef struct { + m3ds_t data; + M3D_INDEX oldidx; + M3D_INDEX newidx; +} m3dssave_t; + +typedef struct { + m3df_t data; + int group; + uint8_t opacity; +} m3dfsave_t; + +/* create unique list of strings */ +static m3dstr_t *_m3d_addstr(m3dstr_t *str, uint32_t *numstr, char *s) +{ + uint32_t i; + if(!s || !*s) return str; + if(str) { + for(i = 0; i < *numstr; i++) + if(str[i].str == s || !strcmp(str[i].str, s)) return str; + } + str = (m3dstr_t*)M3D_REALLOC(str, ((*numstr) + 1) * sizeof(m3dstr_t)); + str[*numstr].str = s; + str[*numstr].offs = 0; + (*numstr)++; + return str; +} + +/* add strings to header */ +m3dhdr_t *_m3d_addhdr(m3dhdr_t *h, m3dstr_t *s) +{ + int i; + char *safe = _m3d_safestr(s->str, 0); + i = (int)strlen(safe); + h = (m3dhdr_t*)M3D_REALLOC(h, h->length + i+1); + if(!h) { M3D_FREE(safe); return NULL; } + memcpy((uint8_t*)h + h->length, safe, i+1); + s->offs = h->length - 16; + h->length += i+1; + M3D_FREE(safe); + return h; +} + +/* return offset of string */ +static uint32_t _m3d_stridx(m3dstr_t *str, uint32_t numstr, char *s) +{ + uint32_t i; + char *safe; + if(!s || !*s) return 0; + if(str) { + safe = _m3d_safestr(s, 0); + if(!safe) return 0; + if(!*safe) { + free(safe); + return 0; + } + for(i = 0; i < numstr; i++) + if(!strcmp(str[i].str, s)) { + free(safe); + return str[i].offs; + } + free(safe); + } + return 0; +} + +/* compare to faces by their material */ +static int _m3d_facecmp(const void *a, const void *b) { + const m3dfsave_t *A = (const m3dfsave_t*)a, *B = (const m3dfsave_t*)b; + return A->group != B->group ? A->group - B->group : (A->opacity != B->opacity ? (int)B->opacity - (int)A->opacity : + (int)A->data.materialid - (int)B->data.materialid); +} +/* compare face groups */ +static int _m3d_grpcmp(const void *a, const void *b) { return *((uint32_t*)a) - *((uint32_t*)b); } +/* compare UVs */ +static int _m3d_ticmp(const void *a, const void *b) { return memcmp(a, b, sizeof(m3dti_t)); } +/* compare skin groups */ +static int _m3d_skincmp(const void *a, const void *b) { return memcmp(a, b, sizeof(m3ds_t)); } +/* compare vertices */ +static int _m3d_vrtxcmp(const void *a, const void *b) { + int c = memcmp(a, b, 3 * sizeof(M3D_FLOAT)); + if(c) return c; + c = ((m3dvsave_t*)a)->norm - ((m3dvsave_t*)b)->norm; + if(c) return c; + return memcmp(a, b, sizeof(m3dv_t)); +} +/* compare labels */ +static _inline int _m3d_strcmp(char *a, char *b) +{ + if(a == NULL && b != NULL) return -1; + if(a != NULL && b == NULL) return 1; + if(a == NULL && b == NULL) return 0; + return strcmp(a, b); +} +static int _m3d_lblcmp(const void *a, const void *b) { + const m3dl_t *A = (const m3dl_t*)a, *B = (const m3dl_t*)b; + int c = _m3d_strcmp(A->lang, B->lang); + if(!c) c = _m3d_strcmp(A->name, B->name); + if(!c) c = _m3d_strcmp(A->text, B->text); + return c; +} +/* compare two colors by HSV value */ +_inline static int _m3d_cmapcmp(const void *a, const void *b) +{ + uint8_t *A = (uint8_t*)a, *B = (uint8_t*)b; + _register int m, vA, vB; + /* get HSV value for A */ + m = A[2] < A[1]? A[2] : A[1]; if(A[0] < m) m = A[0]; + vA = A[2] > A[1]? A[2] : A[1]; if(A[0] > vA) vA = A[0]; + /* get HSV value for B */ + m = B[2] < B[1]? B[2] : B[1]; if(B[0] < m) m = B[0]; + vB = B[2] > B[1]? B[2] : B[1]; if(B[0] > vB) vB = B[0]; + return vA - vB; +} + +/* create sorted list of colors */ +static uint32_t *_m3d_addcmap(uint32_t *cmap, uint32_t *numcmap, uint32_t color) +{ + uint32_t i; + if(cmap) { + for(i = 0; i < *numcmap; i++) + if(cmap[i] == color) return cmap; + } + cmap = (uint32_t*)M3D_REALLOC(cmap, ((*numcmap) + 1) * sizeof(uint32_t)); + for(i = 0; i < *numcmap && _m3d_cmapcmp(&color, &cmap[i]) > 0; i++); + if(i < *numcmap) memmove(&cmap[i+1], &cmap[i], ((*numcmap) - i)*sizeof(uint32_t)); + cmap[i] = color; + (*numcmap)++; + return cmap; +} + +/* look up a color and return its index */ +static uint32_t _m3d_cmapidx(uint32_t *cmap, uint32_t numcmap, uint32_t color) +{ + uint32_t i; + if(numcmap >= 65536) + return color; + for(i = 0; i < numcmap; i++) + if(cmap[i] == color) return i; + return 0; +} + +/* add index to output */ +static unsigned char *_m3d_addidx(unsigned char *out, char type, uint32_t idx) { + switch(type) { + case 1: *out++ = (uint8_t)(idx); break; + case 2: *((uint16_t*)out) = (uint16_t)(idx); out += 2; break; + case 4: *((uint32_t*)out) = (uint32_t)(idx); out += 4; break; + /* case 0: case 8: break; */ + } + return out; +} + +/* round a vertex position */ +static void _m3d_round(int quality, m3dv_t *src, m3dv_t *dst) +{ + _register int t; + /* copy additional attributes */ + if(src != dst) memcpy(dst, src, sizeof(m3dv_t)); + /* round according to quality */ + switch(quality) { + case M3D_EXP_INT8: + t = (int)(src->x * 127 + (src->x >= 0 ? (M3D_FLOAT)0.5 : (M3D_FLOAT)-0.5)); dst->x = (M3D_FLOAT)t / (M3D_FLOAT)127.0; + t = (int)(src->y * 127 + (src->y >= 0 ? (M3D_FLOAT)0.5 : (M3D_FLOAT)-0.5)); dst->y = (M3D_FLOAT)t / (M3D_FLOAT)127.0; + t = (int)(src->z * 127 + (src->z >= 0 ? (M3D_FLOAT)0.5 : (M3D_FLOAT)-0.5)); dst->z = (M3D_FLOAT)t / (M3D_FLOAT)127.0; + t = (int)(src->w * 127 + (src->w >= 0 ? (M3D_FLOAT)0.5 : (M3D_FLOAT)-0.5)); dst->w = (M3D_FLOAT)t / (M3D_FLOAT)127.0; + break; + case M3D_EXP_INT16: + t = (int)(src->x * 32767 + (src->x >= 0 ? (M3D_FLOAT)0.5 : (M3D_FLOAT)-0.5)); dst->x = (M3D_FLOAT)t / (M3D_FLOAT)32767.0; + t = (int)(src->y * 32767 + (src->y >= 0 ? (M3D_FLOAT)0.5 : (M3D_FLOAT)-0.5)); dst->y = (M3D_FLOAT)t / (M3D_FLOAT)32767.0; + t = (int)(src->z * 32767 + (src->z >= 0 ? (M3D_FLOAT)0.5 : (M3D_FLOAT)-0.5)); dst->z = (M3D_FLOAT)t / (M3D_FLOAT)32767.0; + t = (int)(src->w * 32767 + (src->w >= 0 ? (M3D_FLOAT)0.5 : (M3D_FLOAT)-0.5)); dst->w = (M3D_FLOAT)t / (M3D_FLOAT)32767.0; + break; + } + if(dst->x == (M3D_FLOAT)-0.0) dst->x = (M3D_FLOAT)0.0; + if(dst->y == (M3D_FLOAT)-0.0) dst->y = (M3D_FLOAT)0.0; + if(dst->z == (M3D_FLOAT)-0.0) dst->z = (M3D_FLOAT)0.0; + if(dst->w == (M3D_FLOAT)-0.0) dst->w = (M3D_FLOAT)0.0; +} + +#ifdef M3D_ASCII +/* add a bone to ascii output */ +static char *_m3d_prtbone(char *ptr, m3db_t *bone, M3D_INDEX numbone, M3D_INDEX parent, uint32_t level, M3D_INDEX *vrtxidx) +{ + uint32_t i, j; + char *sn; + + if(level > M3D_BONEMAXLEVEL || !bone) return ptr; + for(i = 0; i < numbone; i++) { + if(bone[i].parent == parent) { + for(j = 0; j < level; j++) *ptr++ = '/'; + sn = _m3d_safestr(bone[i].name, 0); + ptr += sprintf(ptr, "%d %d %s\r\n", vrtxidx[bone[i].pos], vrtxidx[bone[i].ori], sn); + M3D_FREE(sn); + ptr = _m3d_prtbone(ptr, bone, numbone, i, level + 1, vrtxidx); + } + } + return ptr; +} +#endif + +/** + * Function to encode an in-memory model into on storage Model 3D format + */ +unsigned char *m3d_save(m3d_t *model, int quality, int flags, unsigned int *size) +{ +#ifdef M3D_ASCII + const char *ol; + char *ptr; +#endif + char vc_s, vi_s, si_s, ci_s, ti_s, bi_s, nb_s, sk_s, fc_s, hi_s, fi_s, vd_s, vp_s; + char *sn = NULL, *sl = NULL, *sa = NULL, *sd = NULL; + unsigned char *out = NULL, *z = NULL, weights[M3D_NUMBONE < 8 ? 8 : M3D_NUMBONE], *norm = NULL; + unsigned int i, j, k, l, n, o, len, chunklen, *length; + int maxvox = 0, minvox = 0; + M3D_FLOAT scale = (M3D_FLOAT)0.0, min_x, max_x, min_y, max_y, min_z, max_z; + M3D_INDEX last, *vrtxidx = NULL, *mtrlidx = NULL, *tmapidx = NULL, *skinidx = NULL; +#ifdef M3D_VERTEXMAX + M3D_INDEX lastp; +#endif + uint32_t idx, numcmap = 0, *cmap = NULL, numvrtx = 0, maxvrtx = 0, numtmap = 0, maxtmap = 0, numproc = 0; + uint32_t numskin = 0, maxskin = 0, numstr = 0, maxt = 0, maxbone = 0, numgrp = 0, maxgrp = 0, *grpidx = NULL; + uint8_t *opa; + m3dcd_t *cd; + m3dc_t *cmd; + m3dstr_t *str = NULL; + m3dvsave_t *vrtx = NULL, vertex; + m3dtisave_t *tmap = NULL, tcoord; + m3dssave_t *skin = NULL, sk; + m3dfsave_t *face = NULL; + m3dhdr_t *h = NULL; + m3dm_t *m; + m3da_t *a; + + if(!model) { + if(size) *size = 0; + return NULL; + } + model->errcode = M3D_SUCCESS; +#ifdef M3D_ASCII + if(flags & M3D_EXP_ASCII) quality = M3D_EXP_DOUBLE; +#endif + vrtxidx = (M3D_INDEX*)M3D_MALLOC(model->numvertex * sizeof(M3D_INDEX)); + if(!vrtxidx) goto memerr; + memset(vrtxidx, 255, model->numvertex * sizeof(M3D_INDEX)); + if(model->numvertex && !(flags & M3D_EXP_NONORMAL)){ + norm = (unsigned char*)M3D_MALLOC(model->numvertex * sizeof(unsigned char)); + if(!norm) goto memerr; + memset(norm, 0, model->numvertex * sizeof(unsigned char)); + } + if(model->nummaterial && !(flags & M3D_EXP_NOMATERIAL)) { + mtrlidx = (M3D_INDEX*)M3D_MALLOC(model->nummaterial * sizeof(M3D_INDEX)); + if(!mtrlidx) goto memerr; + memset(mtrlidx, 255, model->nummaterial * sizeof(M3D_INDEX)); + opa = (uint8_t*)M3D_MALLOC(model->nummaterial * 2 * sizeof(M3D_INDEX)); + if(!opa) goto memerr; + memset(opa, 255, model->nummaterial * 2 * sizeof(M3D_INDEX)); + } + if(model->numtmap && !(flags & M3D_EXP_NOTXTCRD)) { + tmapidx = (M3D_INDEX*)M3D_MALLOC(model->numtmap * sizeof(M3D_INDEX)); + if(!tmapidx) goto memerr; + memset(tmapidx, 255, model->numtmap * sizeof(M3D_INDEX)); + } + /** collect array elements that are actually referenced **/ + if(!(flags & M3D_EXP_NOFACE)) { + /* face */ + if(model->numface && model->face) { + M3D_LOG("Processing mesh face"); + face = (m3dfsave_t*)M3D_MALLOC(model->numface * sizeof(m3dfsave_t)); + if(!face) goto memerr; + for(i = 0; i < model->numface; i++) { + memcpy(&face[i].data, &model->face[i], sizeof(m3df_t)); + face[i].group = 0; + face[i].opacity = 255; + if(!(flags & M3D_EXP_NOMATERIAL) && model->face[i].materialid < model->nummaterial) { + if(model->material[model->face[i].materialid].numprop) { + mtrlidx[model->face[i].materialid] = 0; + if(opa[model->face[i].materialid * 2]) { + m = &model->material[model->face[i].materialid]; + for(j = 0; j < m->numprop; j++) + if(m->prop[j].type == m3dp_Kd) { + opa[model->face[i].materialid * 2 + 1] = ((uint8_t*)&m->prop[j].value.color)[3]; + break; + } + for(j = 0; j < m->numprop; j++) + if(m->prop[j].type == m3dp_d) { + opa[model->face[i].materialid * 2 + 1] = (uint8_t)(m->prop[j].value.fnum * 255); + break; + } + opa[model->face[i].materialid * 2] = 0; + } + face[i].opacity = opa[model->face[i].materialid * 2 + 1]; + } else + face[i].data.materialid = M3D_UNDEF; + } + for(j = 0; j < 3; j++) { + k = model->face[i].vertex[j]; + if(k < model->numvertex) + vrtxidx[k] = 0; + if(!(flags & M3D_EXP_NOCMAP)) { + cmap = _m3d_addcmap(cmap, &numcmap, model->vertex[k].color); + if(!cmap) goto memerr; + } + k = model->face[i].normal[j]; + if(k < model->numvertex && !(flags & M3D_EXP_NONORMAL)) { + vrtxidx[k] = 0; + norm[k] = 1; + } + k = model->face[i].texcoord[j]; + if(k < model->numtmap && !(flags & M3D_EXP_NOTXTCRD)) + tmapidx[k] = 0; +#ifdef M3D_VERTEXMAX + k = model->face[i].vertmax[j]; + if(k < model->numvertex && !(flags & M3D_EXP_NOVRTMAX)) + vrtxidx[k] = 0; +#endif + } + /* convert from CW to CCW */ + if(flags & M3D_EXP_IDOSUCK) { + j = face[i].data.vertex[1]; + face[i].data.vertex[1] = face[i].data.vertex[2]; + face[i].data.vertex[2] = j; + j = face[i].data.normal[1]; + face[i].data.normal[1] = face[i].data.normal[2]; + face[i].data.normal[2] = j; + j = face[i].data.texcoord[1]; + face[i].data.texcoord[1] = face[i].data.texcoord[2]; + face[i].data.texcoord[2] = j; +#ifdef M3D_VERTEXMAX + j = face[i].data.vertmax[1]; + face[i].data.vertmax[1] = face[i].data.vertmax[2]; + face[i].data.vertmax[2] = j; +#endif + } + } + } + if((model->numvoxtype && model->voxtype) || (model->numvoxel && model->voxel)) { + M3D_LOG("Processing voxel face"); + for(i = 0; i < model->numvoxtype; i++) { + str = _m3d_addstr(str, &numstr, model->voxtype[i].name); + if(model->voxtype[i].name && !str) goto memerr; + if(!(flags & M3D_EXP_NOCMAP)) { + cmap = _m3d_addcmap(cmap, &numcmap, model->voxtype[i].color); + if(!cmap) goto memerr; + } + for(j = 0; j < model->voxtype[i].numitem; j++) { + str = _m3d_addstr(str, &numstr, model->voxtype[i].item[j].name); + if(model->voxtype[i].item[j].name && !str) goto memerr; + } + } + for(i = 0; i < model->numvoxel; i++) { + str = _m3d_addstr(str, &numstr, model->voxel[i].name); + if(model->voxel[i].name && !str) goto memerr; + if(model->voxel[i].x < minvox) minvox = model->voxel[i].x; + if(model->voxel[i].x + (int)model->voxel[i].w > maxvox) maxvox = model->voxel[i].x + model->voxel[i].w; + if(model->voxel[i].y < minvox) minvox = model->voxel[i].y; + if(model->voxel[i].y + (int)model->voxel[i].h > maxvox) maxvox = model->voxel[i].y + model->voxel[i].h; + if(model->voxel[i].z < minvox) minvox = model->voxel[i].z; + if(model->voxel[i].z + (int)model->voxel[i].d > maxvox) maxvox = model->voxel[i].z + model->voxel[i].d; + } + } + if(model->numshape && model->shape) { + M3D_LOG("Processing shape face"); + for(i = 0; i < model->numshape; i++) { + if(!model->shape[i].numcmd) continue; + str = _m3d_addstr(str, &numstr, model->shape[i].name); + if(model->shape[i].name && !str) goto memerr; + for(j = 0; j < model->shape[i].numcmd; j++) { + cmd = &model->shape[i].cmd[j]; + if(cmd->type >= (unsigned int)(sizeof(m3d_commandtypes)/sizeof(m3d_commandtypes[0])) || !cmd->arg) + continue; + if(cmd->type == m3dc_mesh) { + if(numgrp + 2 < maxgrp) { + maxgrp += 1024; + grpidx = (uint32_t*)realloc(grpidx, maxgrp * sizeof(uint32_t)); + if(!grpidx) goto memerr; + if(!numgrp) { + grpidx[0] = 0; + grpidx[1] = model->numface; + numgrp += 2; + } + } + grpidx[numgrp + 0] = cmd->arg[0]; + grpidx[numgrp + 1] = cmd->arg[0] + cmd->arg[1]; + numgrp += 2; + } + cd = &m3d_commandtypes[cmd->type]; + for(k = n = 0, l = cd->p; k < l; k++) + switch(cd->a[((k - n) % (cd->p - n)) + n]) { + case m3dcp_mi_t: + if(!(flags & M3D_EXP_NOMATERIAL) && cmd->arg[k] < model->nummaterial) + mtrlidx[cmd->arg[k]] = 0; + break; + case m3dcp_ti_t: + if(!(flags & M3D_EXP_NOTXTCRD) && cmd->arg[k] < model->numtmap) + tmapidx[cmd->arg[k]] = 0; + break; + case m3dcp_qi_t: + case m3dcp_vi_t: + if(cmd->arg[k] < model->numvertex) + vrtxidx[cmd->arg[k]] = 0; + break; + case m3dcp_va_t: + n = k + 1; l += (cmd->arg[k] - 1) * (cd->p - k - 1); + break; + } + } + } + } + if(model->numface && face) { + if(numgrp && grpidx) { + qsort(grpidx, numgrp, sizeof(uint32_t), _m3d_grpcmp); + for(i = j = 0; i < model->numface && j < numgrp; i++) { + while(j < numgrp && grpidx[j] < i) j++; + face[i].group = j; + } + } + qsort(face, model->numface, sizeof(m3dfsave_t), _m3d_facecmp); + } + if(grpidx) { M3D_FREE(grpidx); grpidx = NULL; } + if(model->numlabel && model->label) { + M3D_LOG("Processing annotation labels"); + for(i = 0; i < model->numlabel; i++) { + str = _m3d_addstr(str, &numstr, model->label[i].name); + str = _m3d_addstr(str, &numstr, model->label[i].lang); + str = _m3d_addstr(str, &numstr, model->label[i].text); + if(!(flags & M3D_EXP_NOCMAP)) { + cmap = _m3d_addcmap(cmap, &numcmap, model->label[i].color); + if(!cmap) goto memerr; + } + if(model->label[i].vertexid < model->numvertex) + vrtxidx[model->label[i].vertexid] = 0; + } + qsort(model->label, model->numlabel, sizeof(m3dl_t), _m3d_lblcmp); + } + } else if(!(flags & M3D_EXP_NOMATERIAL)) { + /* without a face, simply add all materials, because it can be an mtllib */ + for(i = 0; i < model->nummaterial; i++) + mtrlidx[i] = i; + } + /* bind-pose skeleton */ + if(model->numbone && model->bone && !(flags & M3D_EXP_NOBONE)) { + M3D_LOG("Processing bones"); + for(i = 0; i < model->numbone; i++) { + str = _m3d_addstr(str, &numstr, model->bone[i].name); + if(!str) goto memerr; + k = model->bone[i].pos; + if(k < model->numvertex) + vrtxidx[k] = 0; + k = model->bone[i].ori; + if(k < model->numvertex) + vrtxidx[k] = 0; + } + } + /* actions, animated skeleton poses */ + if(model->numaction && model->action && !(flags & M3D_EXP_NOACTION)) { + M3D_LOG("Processing action list"); + for(j = 0; j < model->numaction; j++) { + a = &model->action[j]; + str = _m3d_addstr(str, &numstr, a->name); + if(!str) goto memerr; + if(a->numframe > 65535) a->numframe = 65535; + for(i = 0; i < a->numframe; i++) { + for(l = 0; l < a->frame[i].numtransform; l++) { + k = a->frame[i].transform[l].pos; + if(k < model->numvertex) + vrtxidx[k] = 0; + k = a->frame[i].transform[l].ori; + if(k < model->numvertex) + vrtxidx[k] = 0; + } + if(l > maxt) maxt = l; + } + } + } + /* add colors to color map and texture names to string table */ + if(!(flags & M3D_EXP_NOMATERIAL)) { + M3D_LOG("Processing materials"); + for(i = k = 0; i < model->nummaterial; i++) { + if(mtrlidx[i] == M3D_UNDEF || !model->material[i].numprop) continue; + mtrlidx[i] = k++; + m = &model->material[i]; + str = _m3d_addstr(str, &numstr, m->name); + if(!str) goto memerr; + if(m->prop) + for(j = 0; j < m->numprop; j++) { + if(!(flags & M3D_EXP_NOCMAP) && m->prop[j].type < 128) { + for(l = 0; l < sizeof(m3d_propertytypes)/sizeof(m3d_propertytypes[0]); l++) { + if(m->prop[j].type == m3d_propertytypes[l].id && m3d_propertytypes[l].format == m3dpf_color) { + ((uint8_t*)&m->prop[j].value.color)[3] = opa[i * 2 + 1]; + cmap = _m3d_addcmap(cmap, &numcmap, m->prop[j].value.color); + if(!cmap) goto memerr; + break; + } + } + } + if(m->prop[j].type >= 128 && m->prop[j].value.textureid < model->numtexture && + model->texture[m->prop[j].value.textureid].name) { + str = _m3d_addstr(str, &numstr, model->texture[m->prop[j].value.textureid].name); + if(!str) goto memerr; + } + } + } + } + /* if there's only one black color, don't store it */ + if(numcmap == 1 && cmap && !cmap[0]) numcmap = 0; + + /** compress lists **/ + if(model->numtmap && !(flags & M3D_EXP_NOTXTCRD)) { + M3D_LOG("Compressing tmap"); + tmap = (m3dtisave_t*)M3D_MALLOC(model->numtmap * sizeof(m3dtisave_t)); + if(!tmap) goto memerr; + for(i = 0; i < model->numtmap; i++) { + if(tmapidx[i] == M3D_UNDEF) continue; + switch(quality) { + case M3D_EXP_INT8: + l = (unsigned int)(model->tmap[i].u * 255); tcoord.data.u = (M3D_FLOAT)l / (M3D_FLOAT)255.0; + l = (unsigned int)(model->tmap[i].v * 255); tcoord.data.v = (M3D_FLOAT)l / (M3D_FLOAT)255.0; + break; + case M3D_EXP_INT16: + l = (unsigned int)(model->tmap[i].u * 65535); tcoord.data.u = (M3D_FLOAT)l / (M3D_FLOAT)65535.0; + l = (unsigned int)(model->tmap[i].v * 65535); tcoord.data.v = (M3D_FLOAT)l / (M3D_FLOAT)65535.0; + break; + default: + tcoord.data.u = model->tmap[i].u; + tcoord.data.v = model->tmap[i].v; + break; + } + if(flags & M3D_EXP_FLIPTXTCRD) + tcoord.data.v = (M3D_FLOAT)1.0 - tcoord.data.v; + tcoord.oldidx = i; + memcpy(&tmap[numtmap++], &tcoord, sizeof(m3dtisave_t)); + } + if(numtmap) { + qsort(tmap, numtmap, sizeof(m3dtisave_t), _m3d_ticmp); + memcpy(&tcoord.data, &tmap[0], sizeof(m3dti_t)); + for(i = 0; i < numtmap; i++) { + if(memcmp(&tcoord.data, &tmap[i].data, sizeof(m3dti_t))) { + memcpy(&tcoord.data, &tmap[i].data, sizeof(m3dti_t)); + maxtmap++; + } + tmap[i].newidx = maxtmap; + tmapidx[tmap[i].oldidx] = maxtmap; + } + maxtmap++; + } + } + if(model->numskin && model->skin && !(flags & M3D_EXP_NOBONE)) { + M3D_LOG("Compressing skin"); + skinidx = (M3D_INDEX*)M3D_MALLOC(model->numskin * sizeof(M3D_INDEX)); + if(!skinidx) goto memerr; + skin = (m3dssave_t*)M3D_MALLOC(model->numskin * sizeof(m3dssave_t)); + if(!skin) goto memerr; + memset(skinidx, 255, model->numskin * sizeof(M3D_INDEX)); + for(i = 0; i < model->numvertex; i++) { + if(vrtxidx[i] != M3D_UNDEF && model->vertex[i].skinid < model->numskin) + skinidx[model->vertex[i].skinid] = 0; + } + for(i = 0; i < model->numskin; i++) { + if(skinidx[i] == M3D_UNDEF) continue; + memset(&sk, 0, sizeof(m3dssave_t)); + for(j = 0, min_x = (M3D_FLOAT)0.0; j < M3D_NUMBONE && model->skin[i].boneid[j] != M3D_UNDEF && + model->skin[i].weight[j] > (M3D_FLOAT)0.0; j++) { + sk.data.boneid[j] = model->skin[i].boneid[j]; + sk.data.weight[j] = model->skin[i].weight[j]; + min_x += sk.data.weight[j]; + } + if(j > maxbone) maxbone = j; + if(min_x != (M3D_FLOAT)1.0 && min_x != (M3D_FLOAT)0.0) + for(j = 0; j < M3D_NUMBONE && sk.data.weight[j] > (M3D_FLOAT)0.0; j++) + sk.data.weight[j] /= min_x; + sk.oldidx = i; + memcpy(&skin[numskin++], &sk, sizeof(m3dssave_t)); + } + if(numskin) { + qsort(skin, numskin, sizeof(m3dssave_t), _m3d_skincmp); + memcpy(&sk.data, &skin[0].data, sizeof(m3ds_t)); + for(i = 0; i < numskin; i++) { + if(memcmp(&sk.data, &skin[i].data, sizeof(m3ds_t))) { + memcpy(&sk.data, &skin[i].data, sizeof(m3ds_t)); + maxskin++; + } + skin[i].newidx = maxskin; + skinidx[skin[i].oldidx] = maxskin; + } + maxskin++; + } + } + + M3D_LOG("Compressing vertex list"); + min_x = min_y = min_z = (M3D_FLOAT)1e10; + max_x = max_y = max_z = (M3D_FLOAT)-1e10; + if(vrtxidx) { + vrtx = (m3dvsave_t*)M3D_MALLOC(model->numvertex * sizeof(m3dvsave_t)); + if(!vrtx) goto memerr; + for(i = numvrtx = 0; i < model->numvertex; i++) { + if(vrtxidx[i] == M3D_UNDEF) continue; + _m3d_round(quality, &model->vertex[i], &vertex.data); + vertex.norm = norm ? norm[i] : 0; + if(vertex.data.skinid != M3D_INDEXMAX && !vertex.norm) { + vertex.data.skinid = vertex.data.skinid != M3D_UNDEF && skinidx ? skinidx[vertex.data.skinid] : M3D_UNDEF; + if(vertex.data.x > max_x) max_x = vertex.data.x; + if(vertex.data.x < min_x) min_x = vertex.data.x; + if(vertex.data.y > max_y) max_y = vertex.data.y; + if(vertex.data.y < min_y) min_y = vertex.data.y; + if(vertex.data.z > max_z) max_z = vertex.data.z; + if(vertex.data.z < min_z) min_z = vertex.data.z; + } +#ifdef M3D_VERTEXTYPE + vertex.data.type = 0; +#endif + vertex.oldidx = i; + memcpy(&vrtx[numvrtx++], &vertex, sizeof(m3dvsave_t)); + } + if(numvrtx) { + qsort(vrtx, numvrtx, sizeof(m3dvsave_t), _m3d_vrtxcmp); + memcpy(&vertex.data, &vrtx[0].data, sizeof(m3dv_t)); + for(i = 0; i < numvrtx; i++) { + if(memcmp(&vertex.data, &vrtx[i].data, vrtx[i].norm ? 3 * sizeof(M3D_FLOAT) : sizeof(m3dv_t))) { + memcpy(&vertex.data, &vrtx[i].data, sizeof(m3dv_t)); + maxvrtx++; + } + vrtx[i].newidx = maxvrtx; + vrtxidx[vrtx[i].oldidx] = maxvrtx; + } + maxvrtx++; + } + } + if(norm) { M3D_FREE(norm); norm = NULL; } + + /* normalize to bounding cube */ + if(numvrtx && !(flags & M3D_EXP_NORECALC)) { + M3D_LOG("Normalizing coordinates"); + if(min_x < (M3D_FLOAT)0.0) min_x = -min_x; + if(max_x < (M3D_FLOAT)0.0) max_x = -max_x; + if(min_y < (M3D_FLOAT)0.0) min_y = -min_y; + if(max_y < (M3D_FLOAT)0.0) max_y = -max_y; + if(min_z < (M3D_FLOAT)0.0) min_z = -min_z; + if(max_z < (M3D_FLOAT)0.0) max_z = -max_z; + scale = min_x; + if(max_x > scale) scale = max_x; + if(min_y > scale) scale = min_y; + if(max_y > scale) scale = max_y; + if(min_z > scale) scale = min_z; + if(max_z > scale) scale = max_z; + if(scale <= (M3D_FLOAT)0.0) scale = (M3D_FLOAT)1.0; + if(scale != (M3D_FLOAT)1.0) { + for(i = 0; i < numvrtx; i++) { + if(vrtx[i].data.skinid == M3D_INDEXMAX) continue; + vrtx[i].data.x /= scale; + vrtx[i].data.y /= scale; + vrtx[i].data.z /= scale; + } + } + } + if(model->scale > (M3D_FLOAT)0.0) scale = model->scale; + if(scale <= (M3D_FLOAT)0.0) scale = (M3D_FLOAT)1.0; + + /* meta info */ + sn = _m3d_safestr(model->name && *model->name ? model->name : (char*)"(noname)", 2); + sl = _m3d_safestr(model->license ? model->license : (char*)"MIT", 2); + sa = _m3d_safestr(model->author ? model->author : getenv("LOGNAME"), 2); + if(!sn || !sl || !sa) { +memerr: if(vrtxidx) M3D_FREE(vrtxidx); + if(mtrlidx) M3D_FREE(mtrlidx); + if(tmapidx) M3D_FREE(tmapidx); + if(skinidx) M3D_FREE(skinidx); + if(grpidx) M3D_FREE(grpidx); + if(norm) M3D_FREE(norm); + if(face) M3D_FREE(face); + if(cmap) M3D_FREE(cmap); + if(tmap) M3D_FREE(tmap); + if(skin) M3D_FREE(skin); + if(str) M3D_FREE(str); + if(vrtx) M3D_FREE(vrtx); + if(sn) M3D_FREE(sn); + if(sl) M3D_FREE(sl); + if(sa) M3D_FREE(sa); + if(sd) M3D_FREE(sd); + if(out) M3D_FREE(out); + if(h) M3D_FREE(h); + M3D_LOG("Out of memory"); + model->errcode = M3D_ERR_ALLOC; + return NULL; + } + + M3D_LOG("Serializing model"); +#ifdef M3D_ASCII + if(flags & M3D_EXP_ASCII) { + /* use CRLF to make model creators on Win happy... */ + sd = _m3d_safestr(model->desc, 1); + if(!sd) goto memerr; + ol = setlocale(LC_NUMERIC, NULL); + setlocale(LC_NUMERIC, "C"); + /* header */ + len = 64 + (unsigned int)(strlen(sn) + strlen(sl) + strlen(sa) + strlen(sd)); + out = (unsigned char*)M3D_MALLOC(len); + if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr = (char*)out; + ptr += sprintf(ptr, "3dmodel %g\r\n%s\r\n%s\r\n%s\r\n%s\r\n\r\n", scale, + sn, sl, sa, sd); + M3D_FREE(sl); M3D_FREE(sa); M3D_FREE(sd); + sl = sa = sd = NULL; + /* preview chunk */ + if(model->preview.data && model->preview.length) { + sl = _m3d_safestr(sn, 0); + if(sl) { + ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)20); + out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out; + if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, "Preview\r\n%s.png\r\n\r\n", sl); + M3D_FREE(sl); sl = NULL; + } + } + M3D_FREE(sn); sn = NULL; + /* texture map */ + if(numtmap && tmap && !(flags & M3D_EXP_NOTXTCRD) && !(flags & M3D_EXP_NOFACE)) { + ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)(maxtmap * 32) + (uintptr_t)12); + out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out; + if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, "Textmap\r\n"); + last = M3D_UNDEF; + for(i = 0; i < numtmap; i++) { + if(tmap[i].newidx == last) continue; + last = tmap[i].newidx; + ptr += sprintf(ptr, "%g %g\r\n", tmap[i].data.u, tmap[i].data.v); + } + ptr += sprintf(ptr, "\r\n"); + } + /* vertex chunk */ + if(numvrtx && vrtx && !(flags & M3D_EXP_NOFACE)) { + ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)(maxvrtx * 128) + (uintptr_t)10); + out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out; + if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, "Vertex\r\n"); + last = M3D_UNDEF; + for(i = 0; i < numvrtx; i++) { + if(vrtx[i].newidx == last) continue; + last = vrtx[i].newidx; + ptr += sprintf(ptr, "%g %g %g %g", vrtx[i].data.x, vrtx[i].data.y, vrtx[i].data.z, vrtx[i].data.w); + if(!(flags & M3D_EXP_NOCMAP) && vrtx[i].data.color) + ptr += sprintf(ptr, " #%08x", vrtx[i].data.color); + if(!(flags & M3D_EXP_NOBONE) && model->numbone && maxskin && vrtx[i].data.skinid < M3D_INDEXMAX) { + if(skin[vrtx[i].data.skinid].data.weight[0] == (M3D_FLOAT)1.0) + ptr += sprintf(ptr, " %d", skin[vrtx[i].data.skinid].data.boneid[0]); + else + for(j = 0; j < M3D_NUMBONE && skin[vrtx[i].data.skinid].data.boneid[j] != M3D_UNDEF && + skin[vrtx[i].data.skinid].data.weight[j] > (M3D_FLOAT)0.0; j++) + ptr += sprintf(ptr, " %d:%g", skin[vrtx[i].data.skinid].data.boneid[j], + skin[vrtx[i].data.skinid].data.weight[j]); + } + ptr += sprintf(ptr, "\r\n"); + } + ptr += sprintf(ptr, "\r\n"); + } + /* bones chunk */ + if(model->numbone && model->bone && !(flags & M3D_EXP_NOBONE)) { + ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)9); + for(i = 0; i < model->numbone; i++) { + len += (unsigned int)strlen(model->bone[i].name) + 128; + } + out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out; + if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, "Bones\r\n"); + ptr = _m3d_prtbone(ptr, model->bone, model->numbone, M3D_UNDEF, 0, vrtxidx); + ptr += sprintf(ptr, "\r\n"); + } + /* materials */ + if(model->nummaterial && !(flags & M3D_EXP_NOMATERIAL)) { + for(j = 0; j < model->nummaterial; j++) { + if(mtrlidx[j] == M3D_UNDEF || !model->material[j].numprop || !model->material[j].prop) continue; + m = &model->material[j]; + sn = _m3d_safestr(m->name, 0); + if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)strlen(sn) + (uintptr_t)12); + for(i = 0; i < m->numprop; i++) { + if(m->prop[i].type < 128) + len += 32; + else if(m->prop[i].value.textureid < model->numtexture && model->texture[m->prop[i].value.textureid].name) + len += (unsigned int)strlen(model->texture[m->prop[i].value.textureid].name) + 16; + } + out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out; + if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, "Material %s\r\n", sn); + M3D_FREE(sn); sn = NULL; + for(i = 0; i < m->numprop; i++) { + k = 256; + if(m->prop[i].type >= 128) { + for(l = 0; l < sizeof(m3d_propertytypes)/sizeof(m3d_propertytypes[0]); l++) + if(m->prop[i].type == m3d_propertytypes[l].id) { + sn = m3d_propertytypes[l].key; + break; + } + if(!sn) + for(l = 0; l < sizeof(m3d_propertytypes)/sizeof(m3d_propertytypes[0]); l++) + if(m->prop[i].type - 128 == m3d_propertytypes[l].id) { + sn = m3d_propertytypes[l].key; + break; + } + k = sn ? m3dpf_map : 256; + } else { + for(l = 0; l < sizeof(m3d_propertytypes)/sizeof(m3d_propertytypes[0]); l++) + if(m->prop[i].type == m3d_propertytypes[l].id) { + sn = m3d_propertytypes[l].key; + k = m3d_propertytypes[l].format; + break; + } + } + switch(k) { + case m3dpf_color: ptr += sprintf(ptr, "%s #%08x\r\n", sn, m->prop[i].value.color); break; + case m3dpf_uint8: + case m3dpf_uint16: + case m3dpf_uint32: ptr += sprintf(ptr, "%s %d\r\n", sn, m->prop[i].value.num); break; + case m3dpf_float: ptr += sprintf(ptr, "%s %g\r\n", sn, m->prop[i].value.fnum); break; + case m3dpf_map: + if(m->prop[i].value.textureid < model->numtexture && + model->texture[m->prop[i].value.textureid].name) { + sl = _m3d_safestr(model->texture[m->prop[i].value.textureid].name, 0); + if(!sl) { setlocale(LC_NUMERIC, ol); goto memerr; } + if(*sl) + ptr += sprintf(ptr, "map_%s %s\r\n", sn, sl); + M3D_FREE(sn); M3D_FREE(sl); sl = NULL; + } + break; + } + sn = NULL; + } + ptr += sprintf(ptr, "\r\n"); + } + } + /* procedural face */ + if(model->numinlined && model->inlined && !(flags & M3D_EXP_NOFACE)) { + /* all inlined assets which are not textures should be procedural surfaces */ + for(j = 0; j < model->numinlined; j++) { + if(!model->inlined[j].name || !*model->inlined[j].name || !model->inlined[j].length || !model->inlined[j].data || + (model->inlined[j].data[1] == 'P' && model->inlined[j].data[2] == 'N' && model->inlined[j].data[3] == 'G')) + continue; + for(i = k = 0; i < model->numtexture; i++) { + if(!strcmp(model->inlined[j].name, model->texture[i].name)) { k = 1; break; } + } + if(k) continue; + sn = _m3d_safestr(model->inlined[j].name, 0); + if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)strlen(sn) + (uintptr_t)18); + out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out; + if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, "Procedural\r\n%s\r\n\r\n", sn); + M3D_FREE(sn); sn = NULL; + } + } + /* mesh face */ + if(model->numface && face && !(flags & M3D_EXP_NOFACE)) { + ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)(model->numface * 128) + (uintptr_t)6); + last = M3D_UNDEF; +#ifdef M3D_VERTEXMAX + lastp = M3D_UNDEF; +#endif + if(!(flags & M3D_EXP_NOMATERIAL)) + for(i = 0; i < model->numface; i++) { + j = face[i].data.materialid < model->nummaterial ? face[i].data.materialid : M3D_UNDEF; + if(j != last) { + last = j; + if(last < model->nummaterial) + len += (unsigned int)strlen(model->material[last].name); + len += 6; + } +#ifdef M3D_VERTEXMAX + j = face[i].data.paramid < model->numparam ? face[i].data.paramid : M3D_UNDEF; + if(j != lastp) { + lastp = j; + if(lastp < model->numparam) + len += (unsigned int)strlen(model->param[lastp].name); + len += 6; + } +#endif + } + out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out; + if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, "Mesh\r\n"); + last = M3D_UNDEF; +#ifdef M3D_VERTEXMAX + lastp = M3D_UNDEF; +#endif + for(i = 0; i < model->numface; i++) { + j = face[i].data.materialid < model->nummaterial ? face[i].data.materialid : M3D_UNDEF; + if(!(flags & M3D_EXP_NOMATERIAL) && j != last) { + last = j; + if(last < model->nummaterial) { + sn = _m3d_safestr(model->material[last].name, 0); + if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, "use %s\r\n", sn); + M3D_FREE(sn); sn = NULL; + } else + ptr += sprintf(ptr, "use\r\n"); + } +#ifdef M3D_VERTEXMAX + j = face[i].data.paramid < model->numparam ? face[i].data.paramid : M3D_UNDEF; + if(!(flags & M3D_EXP_NOVRTMAX) && j != lastp) { + lastp = j; + if(lastp < model->numparam) { + sn = _m3d_safestr(model->param[lastp].name, 0); + if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, "par %s\r\n", sn); + M3D_FREE(sn); sn = NULL; + } else + ptr += sprintf(ptr, "par\r\n"); + } +#endif + /* hardcoded triangles. Should be repeated as many times as the number of edges in polygon */ + for(j = 0; j < 3; j++) { + ptr += sprintf(ptr, "%s%d", j?" ":"", vrtxidx[face[i].data.vertex[j]]); + k = l = M3D_NOTDEFINED; + if(!(flags & M3D_EXP_NOTXTCRD) && (face[i].data.texcoord[j] != M3D_UNDEF) && + (tmapidx[face[i].data.texcoord[j]] != M3D_UNDEF)) { + k = tmapidx[face[i].data.texcoord[j]]; + ptr += sprintf(ptr, "/%d", k); + } + if(!(flags & M3D_EXP_NONORMAL) && (face[i].data.normal[j] != M3D_UNDEF)) { + l = vrtxidx[face[i].data.normal[j]]; + ptr += sprintf(ptr, "%s/%d", k == M3D_NOTDEFINED? "/" : "", l); + } +#ifdef M3D_VERTEXMAX + if(!(flags & M3D_EXP_NOVRTMAX) && (face[i].data.vertmax[j] != M3D_UNDEF)) { + ptr += sprintf(ptr, "%s%s/%d", k == M3D_NOTDEFINED? "/" : "", l == M3D_NOTDEFINED? "/" : "", + vrtxidx[face[i].data.vertmax[j]]); + } +#endif + } + ptr += sprintf(ptr, "\r\n"); + } + ptr += sprintf(ptr, "\r\n"); + } + /* voxel face */ + if(model->numvoxtype && model->voxtype && !(flags & M3D_EXP_NOFACE)) { + ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)(model->numvoxtype * 128) + (uintptr_t)10); + for(i = 0; i < model->numvoxtype; i++) { + if(model->voxtype[i].name) len += (unsigned int)strlen(model->voxtype[i].name); + for(j = 0; j < model->voxtype[i].numitem; j++) + if(model->voxtype[i].item[j].name) + len += (unsigned int)strlen(model->voxtype[i].item[j].name) + 6; + } + out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out; + if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, "VoxTypes\r\n"); + for(i = 0; i < model->numvoxtype; i++) { + ptr += sprintf(ptr, "#%08x", model->voxtype[i].color); + if(model->voxtype[i].rotation) + ptr += sprintf(ptr, "/%02x", model->voxtype[i].rotation); + if(model->voxtype[i].voxshape) + ptr += sprintf(ptr, "%s/%03x", model->voxtype[i].rotation ? "" : "/", model->voxtype[i].voxshape); + sn = _m3d_safestr(model->voxtype[i].name, 0); + if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, " %s", sn && sn[0] ? sn : "-"); + M3D_FREE(sn); sn = NULL; + if(!(flags & M3D_EXP_NOBONE) && model->numbone && maxskin && model->voxtype[i].skinid < M3D_INDEXMAX) { + if(skin[skinidx[model->voxtype[i].skinid]].data.weight[0] == (M3D_FLOAT)1.0) + ptr += sprintf(ptr, " %d", skin[skinidx[model->voxtype[i].skinid]].data.boneid[0]); + else + for(j = 0; j < M3D_NUMBONE && skin[skinidx[model->voxtype[i].skinid]].data.boneid[j] != M3D_UNDEF && + skin[skinidx[model->voxtype[i].skinid]].data.weight[j] > (M3D_FLOAT)0.0; j++) + ptr += sprintf(ptr, " %d:%g", skin[skinidx[model->voxtype[i].skinid]].data.boneid[j], + skin[skinidx[model->voxtype[i].skinid]].data.weight[j]); + } + if(model->voxtype[i].numitem && model->voxtype[i].item) { + for(j = k = 0; j < model->voxtype[i].numitem; j++) { + if(!model->voxtype[i].item[j].count || !model->voxtype[i].item[j].name || + !model->voxtype[i].item[j].name[0]) continue; + if(!k) { ptr += sprintf(ptr, " {"); k = 1; } + sn = _m3d_safestr(model->voxtype[i].item[j].name, 0); + if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, " %d %s", model->voxtype[i].item[j].count, sn); + M3D_FREE(sn); sn = NULL; + } + if(k) ptr += sprintf(ptr, " }"); + } + while(ptr[-1] == '-' || ptr[-1] == ' ') ptr--; + ptr += sprintf(ptr, "\r\n"); + } + ptr += sprintf(ptr, "\r\n"); + } + if(model->numvoxel && model->voxel && !(flags & M3D_EXP_NOFACE)) { + for(i = 0; i < model->numvoxel; i++) { + ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)128); + if(model->voxel[i].name) len += (unsigned int)strlen(model->voxel[i].name); + len += model->voxel[i].h * ((model->voxel[i].w * 6 + 2) * model->voxel[i].d + 9); + out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out; + if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, "Voxel"); + sn = _m3d_safestr(model->voxel[i].name, 0); + if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; } + if(sn && sn[0]) + ptr += sprintf(ptr, " %s", sn); + M3D_FREE(sn); sn = NULL; + ptr += sprintf(ptr, "\r\n"); + if(model->voxel[i].uncertain) + ptr += sprintf(ptr, "uncertain %d %d\r\n", (model->voxel[i].uncertain * 100) / 255, model->voxel[i].groupid); + if(model->voxel[i].x || model->voxel[i].y || model->voxel[i].z) + ptr += sprintf(ptr, "pos %d %d %d\r\n", model->voxel[i].x, model->voxel[i].y, model->voxel[i].z); + ptr += sprintf(ptr, "dim %d %d %d\r\n", model->voxel[i].w, model->voxel[i].h, model->voxel[i].d); + for(j = n = 0; j < model->voxel[i].h; j++) { + ptr += sprintf(ptr, "layer\r\n"); + for(k = 0; k < model->voxel[i].d; k++) { + for(l = 0; l < model->voxel[i].w; l++, n++) { + switch(model->voxel[i].data[n]) { + case M3D_VOXCLEAR: *ptr++ = '-'; break; + case M3D_VOXUNDEF: *ptr++ = '.'; break; + default: ptr += sprintf(ptr, "%d", model->voxel[i].data[n]); break; + } + *ptr++ = ' '; + } + ptr--; + ptr += sprintf(ptr, "\r\n"); + } + } + ptr += sprintf(ptr, "\r\n"); + } + } + /* mathematical shapes face */ + if(model->numshape && model->numshape && !(flags & M3D_EXP_NOFACE)) { + for(j = 0; j < model->numshape; j++) { + sn = _m3d_safestr(model->shape[j].name, 0); + if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)strlen(sn) + (uintptr_t)33); + out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out; + if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, "Shape %s\r\n", sn); + M3D_FREE(sn); sn = NULL; + if(model->shape[j].group != M3D_UNDEF && !(flags & M3D_EXP_NOBONE)) + ptr += sprintf(ptr, "group %d\r\n", model->shape[j].group); + for(i = 0; i < model->shape[j].numcmd; i++) { + cmd = &model->shape[j].cmd[i]; + if(cmd->type >= (unsigned int)(sizeof(m3d_commandtypes)/sizeof(m3d_commandtypes[0])) || !cmd->arg) + continue; + cd = &m3d_commandtypes[cmd->type]; + ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)strlen(cd->key) + (uintptr_t)3); + for(k = 0; k < cd->p; k++) + switch(cd->a[k]) { + case m3dcp_mi_t: if(cmd->arg[k] != M3D_NOTDEFINED) { len += (unsigned int)strlen(model->material[cmd->arg[k]].name) + 1; } break; + case m3dcp_va_t: len += cmd->arg[k] * (cd->p - k - 1) * 16; k = cd->p; break; + default: len += 16; break; + } + out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out; + if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, "%s", cd->key); + for(k = n = 0, l = cd->p; k < l; k++) { + switch(cd->a[((k - n) % (cd->p - n)) + n]) { + case m3dcp_mi_t: + if(cmd->arg[k] != M3D_NOTDEFINED) { + sn = _m3d_safestr(model->material[cmd->arg[k]].name, 0); + if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, " %s", sn); + M3D_FREE(sn); sn = NULL; + } + break; + case m3dcp_vc_t: ptr += sprintf(ptr, " %g", *((float*)&cmd->arg[k])); break; + case m3dcp_va_t: ptr += sprintf(ptr, " %d[", cmd->arg[k]); + n = k + 1; l += (cmd->arg[k] - 1) * (cd->p - k - 1); + break; + default: ptr += sprintf(ptr, " %d", cmd->arg[k]); break; + } + } + ptr += sprintf(ptr, "%s\r\n", l > cd->p ? " ]" : ""); + } + ptr += sprintf(ptr, "\r\n"); + } + } + /* annotation labels */ + if(model->numlabel && model->label && !(flags & M3D_EXP_NOFACE)) { + for(i = 0, j = 3, length = NULL; i < model->numlabel; i++) { + if(model->label[i].name) j += (unsigned int)strlen(model->label[i].name); + if(model->label[i].lang) j += (unsigned int)strlen(model->label[i].lang); + if(model->label[i].text) j += (unsigned int)strlen(model->label[i].text); + j += 40; + } + ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)j); + out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out; + if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; } + for(i = 0; i < model->numlabel; i++) { + if(!i || _m3d_strcmp(sl, model->label[i].lang) || _m3d_strcmp(sn, model->label[i].name)) { + sl = model->label[i].lang; + sn = model->label[i].name; + sd = _m3d_safestr(sn, 0); + if(!sd) { setlocale(LC_NUMERIC, ol); sn = sl = NULL; goto memerr; } + if(i) ptr += sprintf(ptr, "\r\n"); + ptr += sprintf(ptr, "Labels %s\r\n", sd); + M3D_FREE(sd); sd = NULL; + if(model->label[i].color) + ptr += sprintf(ptr, "color #0x%08x\r\n", model->label[i].color); + if(sl && *sl) { + sd = _m3d_safestr(sl, 0); + if(!sd) { setlocale(LC_NUMERIC, ol); sn = sl = NULL; goto memerr; } + ptr += sprintf(ptr, "lang %s\r\n", sd); + M3D_FREE(sd); sd = NULL; + } + } + sd = _m3d_safestr(model->label[i].text, 2); + if(!sd) { setlocale(LC_NUMERIC, ol); sn = sl = NULL; goto memerr; } + ptr += sprintf(ptr, "%d %s\r\n", model->label[i].vertexid, sd); + M3D_FREE(sd); sd = NULL; + } + ptr += sprintf(ptr, "\r\n"); + sn = sl = NULL; + } + /* actions */ + if(model->numaction && model->action && !(flags & M3D_EXP_NOACTION)) { + for(j = 0; j < model->numaction; j++) { + a = &model->action[j]; + sn = _m3d_safestr(a->name, 0); + if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)strlen(sn) + (uintptr_t)48); + for(i = 0; i < a->numframe; i++) + len += a->frame[i].numtransform * 128 + 8; + out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out; + if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, "Action %d %s\r\n", a->durationmsec, sn); + M3D_FREE(sn); sn = NULL; + for(i = 0; i < a->numframe; i++) { + ptr += sprintf(ptr, "frame %d\r\n", a->frame[i].msec); + for(k = 0; k < a->frame[i].numtransform; k++) { + ptr += sprintf(ptr, "%d %d %d\r\n", a->frame[i].transform[k].boneid, + vrtxidx[a->frame[i].transform[k].pos], vrtxidx[a->frame[i].transform[k].ori]); + } + } + ptr += sprintf(ptr, "\r\n"); + } + } + /* inlined assets */ + if(model->numinlined && model->inlined) { + for(i = j = 0; i < model->numinlined; i++) + if(model->inlined[i].name) + j += (unsigned int)strlen(model->inlined[i].name) + 6; + if(j > 0) { + ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)j + (uintptr_t)16); + out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out; + if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, "Assets\r\n"); + for(i = 0; i < model->numinlined; i++) + if(model->inlined[i].name) + ptr += sprintf(ptr, "%s%s\r\n", model->inlined[i].name, strrchr(model->inlined[i].name, '.') ? "" : ".png"); + ptr += sprintf(ptr, "\r\n"); + } + } + /* extra info */ + if(model->numextra && (flags & M3D_EXP_EXTRA)) { + for(i = 0; i < model->numextra; i++) { + if(model->extra[i]->length < 9) continue; + ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)17 + (uintptr_t)(model->extra[i]->length * 3)); + out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out; + if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; } + ptr += sprintf(ptr, "Extra %c%c%c%c\r\n", + model->extra[i]->magic[0] > ' ' ? model->extra[i]->magic[0] : '_', + model->extra[i]->magic[1] > ' ' ? model->extra[i]->magic[1] : '_', + model->extra[i]->magic[2] > ' ' ? model->extra[i]->magic[2] : '_', + model->extra[i]->magic[3] > ' ' ? model->extra[i]->magic[3] : '_'); + for(j = 0; j < model->extra[i]->length; j++) + ptr += sprintf(ptr, "%02x ", *((unsigned char *)model->extra + sizeof(m3dchunk_t) + j)); + ptr--; + ptr += sprintf(ptr, "\r\n\r\n"); + } + } + setlocale(LC_NUMERIC, ol); + len = (unsigned int)((uintptr_t)ptr - (uintptr_t)out); + out = (unsigned char*)M3D_REALLOC(out, len + 1); + if(!out) goto memerr; + out[len] = 0; + } else +#endif + { + /* stricly only use LF (newline) in binary */ + sd = _m3d_safestr(model->desc, 3); + if(!sd) goto memerr; + /* header */ + h = (m3dhdr_t*)M3D_MALLOC(sizeof(m3dhdr_t) + strlen(sn) + strlen(sl) + strlen(sa) + strlen(sd) + 4); + if(!h) goto memerr; + memcpy((uint8_t*)h, "HEAD", 4); + h->length = sizeof(m3dhdr_t); + h->scale = scale; + i = (unsigned int)strlen(sn); memcpy((uint8_t*)h + h->length, sn, i+1); h->length += i+1; M3D_FREE(sn); + i = (unsigned int)strlen(sl); memcpy((uint8_t*)h + h->length, sl, i+1); h->length += i+1; M3D_FREE(sl); + i = (unsigned int)strlen(sa); memcpy((uint8_t*)h + h->length, sa, i+1); h->length += i+1; M3D_FREE(sa); + i = (unsigned int)strlen(sd); memcpy((uint8_t*)h + h->length, sd, i+1); h->length += i+1; M3D_FREE(sd); + sn = sl = sa = sd = NULL; + if(model->inlined) + for(i = 0; i < model->numinlined; i++) { + if(model->inlined[i].name && *model->inlined[i].name && model->inlined[i].length > 0) { + str = _m3d_addstr(str, &numstr, model->inlined[i].name); + if(!str) goto memerr; + } + } + if(str) + for(i = 0; i < numstr; i++) { + h = _m3d_addhdr(h, &str[i]); + if(!h) goto memerr; + } + vc_s = quality == M3D_EXP_INT8? 1 : (quality == M3D_EXP_INT16? 2 : (quality == M3D_EXP_DOUBLE? 8 : 4)); + vi_s = maxvrtx < 254 ? 1 : (maxvrtx < 65534 ? 2 : 4); + si_s = h->length - 16 < 254 ? 1 : (h->length - 16 < 65534 ? 2 : 4); + ci_s = !numcmap || !cmap ? 0 : (numcmap < 254 ? 1 : (numcmap < 65534 ? 2 : 4)); + ti_s = !maxtmap || !tmap ? 0 : (maxtmap < 254 ? 1 : (maxtmap < 65534 ? 2 : 4)); + bi_s = !model->numbone || !model->bone || (flags & M3D_EXP_NOBONE)? 0 : (model->numbone < 254 ? 1 : + (model->numbone < 65534 ? 2 : 4)); + nb_s = maxbone < 2 ? 1 : (maxbone == 2 ? 2 : (maxbone <= 4 ? 4 : 8)); + sk_s = !bi_s || !maxskin || !skin ? 0 : (maxskin < 254 ? 1 : (maxskin < 65534 ? 2 : 4)); + fc_s = maxt < 254 ? 1 : (maxt < 65534 ? 2 : 4); + hi_s = !model->numshape || !model->shape || (flags & M3D_EXP_NOFACE)? 0 : (model->numshape < 254 ? 1 : + (model->numshape < 65534 ? 2 : 4)); + fi_s = !model->numface || !model->face || (flags & M3D_EXP_NOFACE)? 0 : (model->numface < 254 ? 1 : + (model->numface < 65534 ? 2 : 4)); + vd_s = !model->numvoxel || !model->voxel || (flags & M3D_EXP_NOFACE)? 0 : (minvox >= -128 && maxvox <= 127 ? 1 : + (minvox >= -32768 && maxvox <= 32767 ? 2 : 4)); + vp_s = !model->numvoxtype || !model->voxtype || (flags & M3D_EXP_NOFACE)? 0 : (model->numvoxtype < 254 ? 1 : + (model->numvoxtype < 65534 ? 2 : 4)); + h->types = (vc_s == 8 ? (3<<0) : (vc_s == 2 ? (1<<0) : (vc_s == 1 ? (0<<0) : (2<<0)))) | + (vi_s == 2 ? (1<<2) : (vi_s == 1 ? (0<<2) : (2<<2))) | + (si_s == 2 ? (1<<4) : (si_s == 1 ? (0<<4) : (2<<4))) | + (ci_s == 2 ? (1<<6) : (ci_s == 1 ? (0<<6) : (ci_s == 4 ? (2<<6) : (3<<6)))) | + (ti_s == 2 ? (1<<8) : (ti_s == 1 ? (0<<8) : (ti_s == 4 ? (2<<8) : (3<<8)))) | + (bi_s == 2 ? (1<<10): (bi_s == 1 ? (0<<10): (bi_s == 4 ? (2<<10) : (3<<10)))) | + (nb_s == 2 ? (1<<12): (nb_s == 1 ? (0<<12): (2<<12))) | + (sk_s == 2 ? (1<<14): (sk_s == 1 ? (0<<14): (sk_s == 4 ? (2<<14) : (3<<14)))) | + (fc_s == 2 ? (1<<16): (fc_s == 1 ? (0<<16): (2<<16))) | + (hi_s == 2 ? (1<<18): (hi_s == 1 ? (0<<18): (hi_s == 4 ? (2<<18) : (3<<18)))) | + (fi_s == 2 ? (1<<20): (fi_s == 1 ? (0<<20): (fi_s == 4 ? (2<<20) : (3<<20)))) | + (vd_s == 2 ? (1<<22): (vd_s == 1 ? (0<<22): (vd_s == 4 ? (2<<22) : (3<<22)))) | + (vp_s == 2 ? (1<<24): (vp_s == 1 ? (0<<24): (vp_s == 4 ? (2<<24) : (3<<24)))); + len = h->length; + /* color map */ + if(numcmap && cmap && ci_s < 4 && !(flags & M3D_EXP_NOCMAP)) { + chunklen = 8 + numcmap * sizeof(uint32_t); + h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen); + if(!h) goto memerr; + memcpy((uint8_t*)h + len, "CMAP", 4); + *((uint32_t*)((uint8_t*)h + len + 4)) = chunklen; + memcpy((uint8_t*)h + len + 8, cmap, chunklen - 8); + len += chunklen; + } else numcmap = 0; + /* texture map */ + if(numtmap && tmap && !(flags & M3D_EXP_NOTXTCRD) && !(flags & M3D_EXP_NOFACE)) { + chunklen = 8 + maxtmap * vc_s * 2; + h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen); + if(!h) goto memerr; + memcpy((uint8_t*)h + len, "TMAP", 4); + length = (uint32_t*)((uint8_t*)h + len + 4); + out = (uint8_t*)h + len + 8; + last = M3D_UNDEF; + for(i = 0; i < numtmap; i++) { + if(tmap[i].newidx == last) continue; + last = tmap[i].newidx; + switch(vc_s) { + case 1: *out++ = (uint8_t)(tmap[i].data.u * 255); *out++ = (uint8_t)(tmap[i].data.v * 255); break; + case 2: + *((uint16_t*)out) = (uint16_t)(tmap[i].data.u * 65535); out += 2; + *((uint16_t*)out) = (uint16_t)(tmap[i].data.v * 65535); out += 2; + break; + case 4: *((float*)out) = tmap[i].data.u; out += 4; *((float*)out) = tmap[i].data.v; out += 4; break; + case 8: *((double*)out) = tmap[i].data.u; out += 8; *((double*)out) = tmap[i].data.v; out += 8; break; + } + } + *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len)); + out = NULL; + len += *length; + } + /* vertex */ + if(numvrtx && vrtx) { + chunklen = 8 + maxvrtx * (ci_s + sk_s + 4 * vc_s); + h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen); + if(!h) goto memerr; + memcpy((uint8_t*)h + len, "VRTS", 4); + length = (uint32_t*)((uint8_t*)h + len + 4); + out = (uint8_t*)h + len + 8; + last = M3D_UNDEF; + for(i = 0; i < numvrtx; i++) { + if(vrtx[i].newidx == last) continue; + last = vrtx[i].newidx; + switch(vc_s) { + case 1: + *out++ = (int8_t)(vrtx[i].data.x * 127); + *out++ = (int8_t)(vrtx[i].data.y * 127); + *out++ = (int8_t)(vrtx[i].data.z * 127); + *out++ = (int8_t)(vrtx[i].data.w * 127); + break; + case 2: + *((int16_t*)out) = (int16_t)(vrtx[i].data.x * 32767); out += 2; + *((int16_t*)out) = (int16_t)(vrtx[i].data.y * 32767); out += 2; + *((int16_t*)out) = (int16_t)(vrtx[i].data.z * 32767); out += 2; + *((int16_t*)out) = (int16_t)(vrtx[i].data.w * 32767); out += 2; + break; + case 4: + *((float*)out) = vrtx[i].data.x; out += 4; + *((float*)out) = vrtx[i].data.y; out += 4; + *((float*)out) = vrtx[i].data.z; out += 4; + *((float*)out) = vrtx[i].data.w; out += 4; + break; + case 8: + *((double*)out) = vrtx[i].data.x; out += 8; + *((double*)out) = vrtx[i].data.y; out += 8; + *((double*)out) = vrtx[i].data.z; out += 8; + *((double*)out) = vrtx[i].data.w; out += 8; + break; + } + idx = _m3d_cmapidx(cmap, numcmap, vrtx[i].data.color); + switch(ci_s) { + case 1: *out++ = (uint8_t)(idx); break; + case 2: *((uint16_t*)out) = (uint16_t)(idx); out += 2; break; + case 4: *((uint32_t*)out) = vrtx[i].data.color; out += 4; break; + } + out = _m3d_addidx(out, sk_s, vrtx[i].data.skinid); + } + *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len)); + out = NULL; + len += *length; + } + /* bones chunk */ + if(model->numbone && model->bone && !(flags & M3D_EXP_NOBONE)) { + i = 8 + bi_s + sk_s + model->numbone * (bi_s + si_s + 2*vi_s); + chunklen = i + numskin * nb_s * (bi_s + 1); + h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen); + if(!h) goto memerr; + memcpy((uint8_t*)h + len, "BONE", 4); + length = (uint32_t*)((uint8_t*)h + len + 4); + out = (uint8_t*)h + len + 8; + out = _m3d_addidx(out, bi_s, model->numbone); + out = _m3d_addidx(out, sk_s, maxskin); + for(i = 0; i < model->numbone; i++) { + out = _m3d_addidx(out, bi_s, model->bone[i].parent); + out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->bone[i].name)); + out = _m3d_addidx(out, vi_s, vrtxidx[model->bone[i].pos]); + out = _m3d_addidx(out, vi_s, vrtxidx[model->bone[i].ori]); + } + if(numskin && skin && sk_s) { + last = M3D_UNDEF; + for(i = 0; i < numskin; i++) { + if(skin[i].newidx == last) continue; + last = skin[i].newidx; + memset(&weights, 0, nb_s); + for(j = 0; j < (uint32_t)nb_s && skin[i].data.boneid[j] != M3D_UNDEF && + skin[i].data.weight[j] > (M3D_FLOAT)0.0; j++) + weights[j] = (uint8_t)(skin[i].data.weight[j] * 255); + switch(nb_s) { + case 1: weights[0] = 255; break; + case 2: memcpy(out, weights, 2); out += 2; break; + case 4: memcpy(out, weights, 4); out += 4; break; + case 8: memcpy(out, weights, 8); out += 8; break; + } + for(j = 0; j < (uint32_t)nb_s && skin[i].data.boneid[j] != M3D_UNDEF && weights[j]; j++) { + out = _m3d_addidx(out, bi_s, skin[i].data.boneid[j]); + *length += bi_s; + } + } + } + *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len)); + out = NULL; + len += *length; + } + /* materials */ + if(model->nummaterial && !(flags & M3D_EXP_NOMATERIAL)) { + for(j = 0; j < model->nummaterial; j++) { + if(mtrlidx[j] == M3D_UNDEF || !model->material[j].numprop || !model->material[j].prop) continue; + m = &model->material[j]; + chunklen = 12 + si_s + m->numprop * 5; + h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen); + if(!h) goto memerr; + memcpy((uint8_t*)h + len, "MTRL", 4); + length = (uint32_t*)((uint8_t*)h + len + 4); + out = (uint8_t*)h + len + 8; + out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, m->name)); + for(i = 0; i < m->numprop; i++) { + if(m->prop[i].type >= 128) { + if(m->prop[i].value.textureid >= model->numtexture || + !model->texture[m->prop[i].value.textureid].name) continue; + k = m3dpf_map; + } else { + for(k = 256, l = 0; l < sizeof(m3d_propertytypes)/sizeof(m3d_propertytypes[0]); l++) + if(m->prop[i].type == m3d_propertytypes[l].id) { k = m3d_propertytypes[l].format; break; } + } + if(k == 256) continue; + *out++ = m->prop[i].type; + switch(k) { + case m3dpf_color: + if(!(flags & M3D_EXP_NOCMAP)) { + idx = _m3d_cmapidx(cmap, numcmap, m->prop[i].value.color); + switch(ci_s) { + case 1: *out++ = (uint8_t)(idx); break; + case 2: *((uint16_t*)out) = (uint16_t)(idx); out += 2; break; + case 4: *((uint32_t*)out) = (uint32_t)(m->prop[i].value.color); out += 4; break; + } + } else out--; + break; + case m3dpf_uint8: *out++ = m->prop[i].value.num; break; + case m3dpf_uint16: *((uint16_t*)out) = m->prop[i].value.num; out += 2; break; + case m3dpf_uint32: *((uint32_t*)out) = m->prop[i].value.num; out += 4; break; + case m3dpf_float: *((float*)out) = m->prop[i].value.fnum; out += 4; break; + + case m3dpf_map: + idx = _m3d_stridx(str, numstr, model->texture[m->prop[i].value.textureid].name); + out = _m3d_addidx(out, si_s, idx); + break; + } + } + *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len)); + len += *length; + out = NULL; + } + } + /* procedural face */ + if(model->numinlined && model->inlined && !(flags & M3D_EXP_NOFACE)) { + /* all inlined assets which are not textures should be procedural surfaces */ + for(j = 0; j < model->numinlined; j++) { + if(!model->inlined[j].name || !model->inlined[j].name[0] || model->inlined[j].length < 4 || + !model->inlined[j].data || (model->inlined[j].data[1] == 'P' && model->inlined[j].data[2] == 'N' && + model->inlined[j].data[3] == 'G')) + continue; + for(i = k = 0; i < model->numtexture; i++) { + if(!strcmp(model->inlined[j].name, model->texture[i].name)) { k = 1; break; } + } + if(k) continue; + numproc++; + chunklen = 8 + si_s; + h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen); + if(!h) goto memerr; + memcpy((uint8_t*)h + len, "PROC", 4); + *((uint32_t*)((uint8_t*)h + len + 4)) = chunklen; + out = (uint8_t*)h + len + 8; + out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->inlined[j].name)); + out = NULL; + len += chunklen; + } + } + /* mesh face */ + if(model->numface && face && !(flags & M3D_EXP_NOFACE)) { + chunklen = 8 + si_s + model->numface * (6 * vi_s + 3 * ti_s + si_s + 1); + h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen); + if(!h) goto memerr; + memcpy((uint8_t*)h + len, "MESH", 4); + length = (uint32_t*)((uint8_t*)h + len + 4); + out = (uint8_t*)h + len + 8; + last = M3D_UNDEF; +#ifdef M3D_VERTEXMAX + lastp = M3D_UNDEF; +#endif + for(i = 0; i < model->numface; i++) { + if(!(flags & M3D_EXP_NOMATERIAL) && face[i].data.materialid != last) { + last = face[i].data.materialid; + idx = last < model->nummaterial ? _m3d_stridx(str, numstr, model->material[last].name) : 0; + *out++ = 0; + out = _m3d_addidx(out, si_s, idx); + } +#ifdef M3D_VERTEXMAX + if(!(flags & M3D_EXP_NOVRTMAX) && face[i].data.paramid != lastp) { + lastp = face[i].data.paramid; + idx = lastp < model->numparam ? _m3d_stridx(str, numstr, model->param[lastp].name) : 0; + *out++ = 0; + out = _m3d_addidx(out, si_s, idx); + } +#endif + /* hardcoded triangles. */ + k = (3 << 4) | + (((flags & M3D_EXP_NOTXTCRD) || !ti_s || face[i].data.texcoord[0] == M3D_UNDEF || + face[i].data.texcoord[1] == M3D_UNDEF || face[i].data.texcoord[2] == M3D_UNDEF) ? 0 : 1) | + (((flags & M3D_EXP_NONORMAL) || face[i].data.normal[0] == M3D_UNDEF || + face[i].data.normal[1] == M3D_UNDEF || face[i].data.normal[2] == M3D_UNDEF) ? 0 : 2) +#ifdef M3D_VERTEXMAX + | (((flags & M3D_EXP_NOVRTMAX) || face[i].data.vertmax[0] == M3D_UNDEF || + face[i].data.vertmax[1] == M3D_UNDEF || face[i].data.vertmax[2] == M3D_UNDEF) ? 0 : 4) +#endif + ; + *out++ = k; + for(j = 0; j < 3; j++) { + out = _m3d_addidx(out, vi_s, vrtxidx[face[i].data.vertex[j]]); + if(k & 1) + out = _m3d_addidx(out, ti_s, tmapidx[face[i].data.texcoord[j]]); + if(k & 2) + out = _m3d_addidx(out, vi_s, vrtxidx[face[i].data.normal[j]]); +#ifdef M3D_VERTEXMAX + if(k & 4) + out = _m3d_addidx(out, vi_s, vrtxidx[face[i].data.vertmax[j]]); +#endif + } + } + *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len)); + len += *length; + out = NULL; + } + /* voxel face */ + if(model->numvoxtype && model->voxtype && !(flags & M3D_EXP_NOFACE)) { + chunklen = 8 + si_s + model->numvoxtype * (ci_s + si_s + 3 + sk_s); + for(i = 0; i < model->numvoxtype; i++) + chunklen += model->voxtype[i].numitem * (2 + si_s); + h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen); + if(!h) goto memerr; + memcpy((uint8_t*)h + len, "VOXT", 4); + length = (uint32_t*)((uint8_t*)h + len + 4); + out = (uint8_t*)h + len + 8; + for(i = 0; i < model->numvoxtype; i++) { + if(!(flags & M3D_EXP_NOCMAP)) { + idx = _m3d_cmapidx(cmap, numcmap, model->voxtype[i].color); + switch(ci_s) { + case 1: *out++ = (uint8_t)(idx); break; + case 2: *((uint16_t*)out) = (uint16_t)(idx); out += 2; break; + case 4: *((uint32_t*)out) = (uint32_t)(model->voxtype[i].color); out += 4; break; + } + } + out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->voxtype[i].name)); + *out++ = (model->voxtype[i].rotation & 0xBF) | (((model->voxtype[i].voxshape >> 8) & 1) << 6); + *out++ = model->voxtype[i].voxshape; + *out++ = model->voxtype[i].numitem; + if(!(flags & M3D_EXP_NOBONE) && model->numbone && maxskin) + out = _m3d_addidx(out, sk_s, skinidx[model->voxtype[i].skinid]); + for(j = 0; j < model->voxtype[i].numitem; j++) { + out = _m3d_addidx(out, 2, model->voxtype[i].item[j].count); + out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->voxtype[i].item[j].name)); + } + } + *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len)); + len += *length; + out = NULL; + } + if(model->numvoxel && model->voxel && !(flags & M3D_EXP_NOFACE)) { + for(j = 0; j < model->numvoxel; j++) { + chunklen = 8 + si_s + 6 * vd_s + 2 + model->voxel[j].w * model->voxel[j].h * model->voxel[j].d * 3; + h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen); + if(!h) goto memerr; + memcpy((uint8_t*)h + len, "VOXD", 4); + length = (uint32_t*)((uint8_t*)h + len + 4); + out = (uint8_t*)h + len + 8; + out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->voxel[j].name)); + out = _m3d_addidx(out, vd_s, model->voxel[j].x); + out = _m3d_addidx(out, vd_s, model->voxel[j].y); + out = _m3d_addidx(out, vd_s, model->voxel[j].z); + out = _m3d_addidx(out, vd_s, model->voxel[j].w); + out = _m3d_addidx(out, vd_s, model->voxel[j].h); + out = _m3d_addidx(out, vd_s, model->voxel[j].d); + *out++ = model->voxel[j].uncertain; + *out++ = model->voxel[j].groupid; + /* RLE compress voxel data */ + n = model->voxel[j].w * model->voxel[j].h * model->voxel[j].d; + k = o = 0; out[o++] = 0; + for(i = 0; i < n; i++) { + for(l = 1; l < 128 && i + l < n && model->voxel[j].data[i] == model->voxel[j].data[i + l]; l++); + if(l > 1) { + l--; + if(out[k]) { out[k]--; out[o++] = 0x80 | l; } + else out[k] = 0x80 | l; + switch(vp_s) { + case 1: out[o++] = model->voxel[j].data[i]; break; + default: *((uint16_t*)(out + o)) = model->voxel[j].data[i]; o += 2; break; + } + k = o; out[o++] = 0; + i += l; + continue; + } + out[k]++; + switch(vp_s) { + case 1: out[o++] = model->voxel[j].data[i]; break; + default: *((uint16_t*)(out + o)) = model->voxel[j].data[i]; o += 2; break; + } + if(out[k] > 127) { out[k]--; k = o; out[o++] = 0; } + } + if(!(out[k] & 0x80)) { if(out[k]) out[k]--; else o--; } + *length = (uint32_t)((uintptr_t)out + (uintptr_t)o - (uintptr_t)((uint8_t*)h + len)); + len += *length; + out = NULL; + } + } + /* mathematical shapes face */ + if(model->numshape && model->shape && !(flags & M3D_EXP_NOFACE)) { + for(j = 0; j < model->numshape; j++) { + chunklen = 12 + si_s + model->shape[j].numcmd * (M3D_CMDMAXARG + 1) * 4; + h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen); + if(!h) goto memerr; + memcpy((uint8_t*)h + len, "SHPE", 4); + length = (uint32_t*)((uint8_t*)h + len + 4); + out = (uint8_t*)h + len + 8; + out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->shape[j].name)); + out = _m3d_addidx(out, bi_s, model->shape[j].group); + for(i = 0; i < model->shape[j].numcmd; i++) { + cmd = &model->shape[j].cmd[i]; + if(cmd->type >= (unsigned int)(sizeof(m3d_commandtypes)/sizeof(m3d_commandtypes[0])) || !cmd->arg) + continue; + cd = &m3d_commandtypes[cmd->type]; + *out++ = (cmd->type & 0x7F) | (cmd->type > 127 ? 0x80 : 0); + if(cmd->type > 127) *out++ = (cmd->type >> 7) & 0xff; + for(k = n = 0, l = cd->p; k < l; k++) { + switch(cd->a[((k - n) % (cd->p - n)) + n]) { + case m3dcp_mi_t: + out = _m3d_addidx(out, si_s, cmd->arg[k] < model->nummaterial ? + _m3d_stridx(str, numstr, model->material[cmd->arg[k]].name) : 0); + break; + case m3dcp_vc_t: + min_x = *((float*)&cmd->arg[k]); + switch(vc_s) { + case 1: *out++ = (int8_t)(min_x * 127); break; + case 2: *((int16_t*)out) = (int16_t)(min_x * 32767); out += 2; break; + case 4: *((float*)out) = min_x; out += 4; break; + case 8: *((double*)out) = min_x; out += 8; break; + } + break; + case m3dcp_hi_t: out = _m3d_addidx(out, hi_s, cmd->arg[k]); break; + case m3dcp_fi_t: out = _m3d_addidx(out, fi_s, cmd->arg[k]); break; + case m3dcp_ti_t: out = _m3d_addidx(out, ti_s, cmd->arg[k]); break; + case m3dcp_qi_t: + case m3dcp_vi_t: out = _m3d_addidx(out, vi_s, cmd->arg[k]); break; + case m3dcp_i1_t: out = _m3d_addidx(out, 1, cmd->arg[k]); break; + case m3dcp_i2_t: out = _m3d_addidx(out, 2, cmd->arg[k]); break; + case m3dcp_i4_t: out = _m3d_addidx(out, 4, cmd->arg[k]); break; + case m3dcp_va_t: out = _m3d_addidx(out, 4, cmd->arg[k]); + n = k + 1; l += (cmd->arg[k] - 1) * (cd->p - k - 1); + break; + } + } + } + *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len)); + len += *length; + out = NULL; + } + } + /* annotation labels */ + if(model->numlabel && model->label) { + for(i = 0, length = NULL; i < model->numlabel; i++) { + if(!i || _m3d_strcmp(sl, model->label[i].lang) || _m3d_strcmp(sn, model->label[i].name)) { + sl = model->label[i].lang; + sn = model->label[i].name; + if(length) { + *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len)); + len += *length; + } + chunklen = 8 + 2 * si_s + ci_s + model->numlabel * (vi_s + si_s); + h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen); + if(!h) { sn = NULL; sl = NULL; goto memerr; } + memcpy((uint8_t*)h + len, "LBLS", 4); + length = (uint32_t*)((uint8_t*)h + len + 4); + out = (uint8_t*)h + len + 8; + out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->label[l].name)); + out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->label[l].lang)); + idx = _m3d_cmapidx(cmap, numcmap, model->label[i].color); + switch(ci_s) { + case 1: *out++ = (uint8_t)(idx); break; + case 2: *((uint16_t*)out) = (uint16_t)(idx); out += 2; break; + case 4: *((uint32_t*)out) = model->label[i].color; out += 4; break; + } + } + out = _m3d_addidx(out, vi_s, vrtxidx[model->label[i].vertexid]); + out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->label[l].text)); + } + if(length) { + *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len)); + len += *length; + } + out = NULL; + sn = sl = NULL; + } + /* actions */ + if(model->numaction && model->action && model->numbone && model->bone && !(flags & M3D_EXP_NOACTION)) { + for(j = 0; j < model->numaction; j++) { + a = &model->action[j]; + chunklen = 14 + si_s + a->numframe * (4 + fc_s + maxt * (bi_s + 2 * vi_s)); + h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen); + if(!h) goto memerr; + memcpy((uint8_t*)h + len, "ACTN", 4); + length = (uint32_t*)((uint8_t*)h + len + 4); + out = (uint8_t*)h + len + 8; + out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, a->name)); + *((uint16_t*)out) = (uint16_t)(a->numframe); out += 2; + *((uint32_t*)out) = (uint32_t)(a->durationmsec); out += 4; + for(i = 0; i < a->numframe; i++) { + *((uint32_t*)out) = (uint32_t)(a->frame[i].msec); out += 4; + out = _m3d_addidx(out, fc_s, a->frame[i].numtransform); + for(k = 0; k < a->frame[i].numtransform; k++) { + out = _m3d_addidx(out, bi_s, a->frame[i].transform[k].boneid); + out = _m3d_addidx(out, vi_s, vrtxidx[a->frame[i].transform[k].pos]); + out = _m3d_addidx(out, vi_s, vrtxidx[a->frame[i].transform[k].ori]); + } + } + *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len)); + len += *length; + out = NULL; + } + } + /* inlined assets */ + if(model->numinlined && model->inlined && (numproc || (flags & M3D_EXP_INLINE))) { + for(j = 0; j < model->numinlined; j++) { + if(!model->inlined[j].name || !model->inlined[j].name[0] || model->inlined[j].length<4 || !model->inlined[j].data) + continue; + if(!(flags & M3D_EXP_INLINE)) { + if(model->inlined[j].data[1] == 'P' && model->inlined[j].data[2] == 'N' && model->inlined[j].data[3] == 'G') + continue; + for(i = k = 0; i < model->numtexture; i++) { + if(!strcmp(model->inlined[j].name, model->texture[i].name)) { k = 1; break; } + } + if(k) continue; + } + chunklen = 8 + si_s + model->inlined[j].length; + h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen); + if(!h) goto memerr; + memcpy((uint8_t*)h + len, "ASET", 4); + *((uint32_t*)((uint8_t*)h + len + 4)) = chunklen; + out = (uint8_t*)h + len + 8; + out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->inlined[j].name)); + memcpy(out, model->inlined[j].data, model->inlined[j].length); + out = NULL; + len += chunklen; + } + } + /* extra chunks */ + if(model->numextra && model->extra && (flags & M3D_EXP_EXTRA)) { + for(j = 0; j < model->numextra; j++) { + if(!model->extra[j] || model->extra[j]->length < 8) + continue; + chunklen = model->extra[j]->length; + h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen); + if(!h) goto memerr; + memcpy((uint8_t*)h + len, model->extra[j], chunklen); + len += chunklen; + } + } + /* add end chunk */ + h = (m3dhdr_t*)M3D_REALLOC(h, len + 4); + if(!h) goto memerr; + memcpy((uint8_t*)h + len, "OMD3", 4); + len += 4; + /* zlib compress */ + if(!(flags & M3D_EXP_NOZLIB)) { + M3D_LOG("Deflating chunks"); + z = stbi_zlib_compress((unsigned char *)h, len, (int*)&l, 9); + if(z && l > 0 && l < len) { len = l; M3D_FREE(h); h = (m3dhdr_t*)z; } + } + /* add file header at the begining */ + len += 8; + out = (unsigned char*)M3D_MALLOC(len); + if(!out) goto memerr; + memcpy(out, "3DMO", 4); + *((uint32_t*)(out + 4)) = len; + /* preview image chunk, must be the first if exists */ + if(model->preview.data && model->preview.length) { + chunklen = 8 + model->preview.length; + out = (unsigned char*)M3D_REALLOC(out, len + chunklen); + if(!out) goto memerr; + memcpy((uint8_t*)out + 8, "PRVW", 4); + *((uint32_t*)((uint8_t*)out + 8 + 4)) = chunklen; + memcpy((uint8_t*)out + 8 + 8, model->preview.data, model->preview.length); + *((uint32_t*)(out + 4)) += chunklen; + } else + chunklen = 0; + memcpy(out + 8 + chunklen, h, len - 8); + } + if(size) *size = out ? len : 0; + if(vrtxidx) M3D_FREE(vrtxidx); + if(mtrlidx) M3D_FREE(mtrlidx); + if(tmapidx) M3D_FREE(tmapidx); + if(skinidx) M3D_FREE(skinidx); + if(norm) M3D_FREE(norm); + if(face) M3D_FREE(face); + if(cmap) M3D_FREE(cmap); + if(tmap) M3D_FREE(tmap); + if(skin) M3D_FREE(skin); + if(str) M3D_FREE(str); + if(vrtx) M3D_FREE(vrtx); + if(h) M3D_FREE(h); + return out; +} +#endif + +#endif + +#ifdef __cplusplus +} +#ifdef M3D_CPPWRAPPER +#include +#include +#include + +/*** C++ wrapper class ***/ +namespace M3D { +#ifdef M3D_IMPLEMENTATION + + class Model { + public: + m3d_t *model; + + public: + Model() { + this->model = (m3d_t*)malloc(sizeof(m3d_t)); memset(this->model, 0, sizeof(m3d_t)); + } + Model(_unused const std::string &data, _unused m3dread_t ReadFileCB, + _unused m3dfree_t FreeCB, _unused M3D::Model mtllib) { +#ifndef M3D_NOIMPORTER + this->model = m3d_load((unsigned char *)data.data(), ReadFileCB, FreeCB, mtllib.model); +#else + Model(); +#endif + } + Model(_unused const std::vector data, _unused m3dread_t ReadFileCB, + _unused m3dfree_t FreeCB, _unused M3D::Model mtllib) { +#ifndef M3D_NOIMPORTER + this->model = m3d_load((unsigned char *)&data[0], ReadFileCB, FreeCB, mtllib.model); +#else + Model(); +#endif + } + Model(_unused const unsigned char *data, _unused m3dread_t ReadFileCB, + _unused m3dfree_t FreeCB, _unused M3D::Model mtllib) { +#ifndef M3D_NOIMPORTER + this->model = m3d_load((unsigned char*)data, ReadFileCB, FreeCB, mtllib.model); +#else + Model(); +#endif + } + ~Model() { m3d_free(this->model); } + + public: + m3d_t *getCStruct() { return this->model; } + std::string getName() { return std::string(this->model->name); } + void setName(std::string name) { this->model->name = (char*)name.c_str(); } + std::string getLicense() { return std::string(this->model->license); } + void setLicense(std::string license) { this->model->license = (char*)license.c_str(); } + std::string getAuthor() { return std::string(this->model->author); } + void setAuthor(std::string author) { this->model->author = (char*)author.c_str(); } + std::string getDescription() { return std::string(this->model->desc); } + void setDescription(std::string desc) { this->model->desc = (char*)desc.c_str(); } + float getScale() { return this->model->scale; } + void setScale(float scale) { this->model->scale = scale; } + std::vector getPreview() { return this->model->preview.data ? + std::vector(this->model->preview.data, this->model->preview.data + this->model->preview.length) : + std::vector(); } + std::vector getColorMap() { return this->model->cmap ? std::vector(this->model->cmap, + this->model->cmap + this->model->numcmap) : std::vector(); } + std::vector getTextureMap() { return this->model->tmap ? std::vector(this->model->tmap, + this->model->tmap + this->model->numtmap) : std::vector(); } + std::vector getTextures() { return this->model->texture ? std::vector(this->model->texture, + this->model->texture + this->model->numtexture) : std::vector(); } + std::string getTextureName(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numtexture ? + std::string(this->model->texture[idx].name) : nullptr; } + std::vector getBones() { return this->model->bone ? std::vector(this->model->bone, this->model->bone + + this->model->numbone) : std::vector(); } + std::string getBoneName(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numbone ? + std::string(this->model->bone[idx].name) : nullptr; } + std::vector getMaterials() { return this->model->material ? std::vector(this->model->material, + this->model->material + this->model->nummaterial) : std::vector(); } + std::string getMaterialName(int idx) { return idx >= 0 && (unsigned int)idx < this->model->nummaterial ? + std::string(this->model->material[idx].name) : nullptr; } + int getMaterialPropertyInt(int idx, int type) { + if (idx < 0 || (unsigned int)idx >= this->model->nummaterial || type < 0 || type >= 127 || + !this->model->material[idx].prop) return -1; + for (int i = 0; i < this->model->material[idx].numprop; i++) { + if (this->model->material[idx].prop[i].type == type) + return this->model->material[idx].prop[i].value.num; + } + return -1; + } + uint32_t getMaterialPropertyColor(int idx, int type) { return this->getMaterialPropertyInt(idx, type); } + float getMaterialPropertyFloat(int idx, int type) { + if (idx < 0 || (unsigned int)idx >= this->model->nummaterial || type < 0 || type >= 127 || + !this->model->material[idx].prop) return -1.0f; + for (int i = 0; i < this->model->material[idx].numprop; i++) { + if (this->model->material[idx].prop[i].type == type) + return this->model->material[idx].prop[i].value.fnum; + } + return -1.0f; + } + m3dtx_t* getMaterialPropertyMap(int idx, int type) { + if (idx < 0 || (unsigned int)idx >= this->model->nummaterial || type < 128 || type > 255 || + !this->model->material[idx].prop) return nullptr; + for (int i = 0; i < this->model->material[idx].numprop; i++) { + if (this->model->material[idx].prop[i].type == type) + return this->model->material[idx].prop[i].value.textureid < this->model->numtexture ? + &this->model->texture[this->model->material[idx].prop[i].value.textureid] : nullptr; + } + return nullptr; + } + std::vector getVertices() { return this->model->vertex ? std::vector(this->model->vertex, + this->model->vertex + this->model->numvertex) : std::vector(); } + std::vector getFace() { return this->model->face ? std::vector(this->model->face, this->model->face + + this->model->numface) : std::vector(); } + std::vector getVoxelTypes() { return this->model->voxtype ? std::vector(this->model->voxtype, + this->model->voxtype + this->model->numvoxtype) : std::vector(); } + std::string getVoxelTypeName(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numvoxtype && + this->model->voxtype[idx].name && this->model->voxtype[idx].name[0] ? + std::string(this->model->voxtype[idx].name) : nullptr; } + std::vector getVoxelTypeItems(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numvoxtype && + this->model->voxtype[idx].item ? std::vector(this->model->voxtype[idx].item, + this->model->voxtype[idx].item + this->model->voxtype[idx].numitem) : std::vector(); } + std::vector getVoxelBlocks() { return this->model->voxel ? std::vector(this->model->voxel, + this->model->voxel + this->model->numvoxel) : std::vector(); } + std::string getVoxelBlockName(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numvoxel && + this->model->voxel[idx].name && this->model->voxel[idx].name[0] ? + std::string(this->model->voxel[idx].name) : nullptr; } + std::vector getVoxelBlockData(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numvoxel && + this->model->voxel[idx].data ? std::vector(this->model->voxel[idx].data, + this->model->voxel[idx].data + this->model->voxel[idx].w*this->model->voxel[idx].h*this->model->voxel[idx].d) : + std::vector(); } + std::vector getShape() { return this->model->shape ? std::vector(this->model->shape, + this->model->shape + this->model->numshape) : std::vector(); } + std::string getShapeName(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numshape && + this->model->shape[idx].name && this->model->shape[idx].name[0] ? + std::string(this->model->shape[idx].name) : nullptr; } + unsigned int getShapeGroup(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numshape ? + this->model->shape[idx].group : 0xFFFFFFFF; } + std::vector getShapeCommands(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numshape && + this->model->shape[idx].cmd ? std::vector(this->model->shape[idx].cmd, this->model->shape[idx].cmd + + this->model->shape[idx].numcmd) : std::vector(); } + std::vector getAnnotationLabels() { return this->model->label ? std::vector(this->model->label, + this->model->label + this->model->numlabel) : std::vector(); } + std::vector getSkin() { return this->model->skin ? std::vector(this->model->skin, this->model->skin + + this->model->numskin) : std::vector(); } + std::vector getActions() { return this->model->action ? std::vector(this->model->action, + this->model->action + this->model->numaction) : std::vector(); } + std::string getActionName(int aidx) { return aidx >= 0 && (unsigned int)aidx < this->model->numaction ? + std::string(this->model->action[aidx].name) : nullptr; } + unsigned int getActionDuration(int aidx) { return aidx >= 0 && (unsigned int)aidx < this->model->numaction ? + this->model->action[aidx].durationmsec : 0; } + std::vector getActionFrames(int aidx) { return aidx >= 0 && (unsigned int)aidx < this->model->numaction ? + std::vector(this->model->action[aidx].frame, this->model->action[aidx].frame + + this->model->action[aidx].numframe) : std::vector(); } + unsigned int getActionFrameTimestamp(int aidx, int fidx) { return aidx >= 0 && (unsigned int)aidx < this->model->numaction? + (fidx >= 0 && (unsigned int)fidx < this->model->action[aidx].numframe ? + this->model->action[aidx].frame[fidx].msec : 0) : 0; } + std::vector getActionFrameTransforms(int aidx, int fidx) { + return aidx >= 0 && (unsigned int)aidx < this->model->numaction ? ( + fidx >= 0 && (unsigned int)fidx < this->model->action[aidx].numframe ? + std::vector(this->model->action[aidx].frame[fidx].transform, + this->model->action[aidx].frame[fidx].transform + this->model->action[aidx].frame[fidx].numtransform) : + std::vector()) : std::vector(); } + std::vector getActionFrame(int aidx, int fidx, std::vector skeleton) { + m3dtr_t *pose = m3d_frame(this->model, (unsigned int)aidx, (unsigned int)fidx, + skeleton.size() ? &skeleton[0] : nullptr); + return std::vector(pose, pose + this->model->numbone); } + std::vector getActionPose(int aidx, unsigned int msec) { + m3db_t *pose = m3d_pose(this->model, (unsigned int)aidx, (unsigned int)msec); + return std::vector(pose, pose + this->model->numbone); } + std::vector getInlinedAssets() { return this->model->inlined ? std::vector(this->model->inlined, + this->model->inlined + this->model->numinlined) : std::vector(); } + std::vector> getExtras() { return this->model->extra ? + std::vector>(this->model->extra, + this->model->extra + this->model->numextra) : std::vector>(); } + std::vector Save(_unused int quality, _unused int flags) { +#ifdef M3D_EXPORTER + unsigned int size; + unsigned char *ptr = m3d_save(this->model, quality, flags, &size); + return ptr && size ? std::vector(ptr, ptr + size) : std::vector(); +#else + return std::vector(); +#endif + } + }; + +#else + class Model { + private: + m3d_t *model; + + public: + Model(const std::string &data, m3dread_t ReadFileCB, m3dfree_t FreeCB); + Model(const std::vector data, m3dread_t ReadFileCB, m3dfree_t FreeCB); + Model(const unsigned char *data, m3dread_t ReadFileCB, m3dfree_t FreeCB); + Model(); + ~Model(); + + public: + m3d_t *getCStruct(); + std::string getName(); + void setName(std::string name); + std::string getLicense(); + void setLicense(std::string license); + std::string getAuthor(); + void setAuthor(std::string author); + std::string getDescription(); + void setDescription(std::string desc); + float getScale(); + void setScale(float scale); + std::vector getPreview(); + std::vector getColorMap(); + std::vector getTextureMap(); + std::vector getTextures(); + std::string getTextureName(int idx); + std::vector getBones(); + std::string getBoneName(int idx); + std::vector getMaterials(); + std::string getMaterialName(int idx); + int getMaterialPropertyInt(int idx, int type); + uint32_t getMaterialPropertyColor(int idx, int type); + float getMaterialPropertyFloat(int idx, int type); + m3dtx_t* getMaterialPropertyMap(int idx, int type); + std::vector getVertices(); + std::vector getFace(); + std::vector getVoxelTypes(); + std::string getVoxelTypeName(int idx); + std::vector getVoxelTypeItems(int idx); + std::vector getVoxelBlocks(); + std::string getVoxelBlockName(int idx); + std::vector getVoxelBlockData(int idx); + std::vector getShape(); + std::string getShapeName(int idx); + unsigned int getShapeGroup(int idx); + std::vector getShapeCommands(int idx); + std::vector getAnnotationLabels(); + std::vector getSkin(); + std::vector getActions(); + std::string getActionName(int aidx); + unsigned int getActionDuration(int aidx); + std::vector getActionFrames(int aidx); + unsigned int getActionFrameTimestamp(int aidx, int fidx); + std::vector getActionFrameTransforms(int aidx, int fidx); + std::vector getActionFrame(int aidx, int fidx, std::vector skeleton); + std::vector getActionPose(int aidx, unsigned int msec); + std::vector getInlinedAssets(); + std::vector> getExtras(); + std::vector Save(int quality, int flags); + }; + +#endif /* impl */ +} +#endif + +#endif /* __cplusplus */ + +#endif diff --git a/src/rmodels.c b/src/rmodels.c index ee8b2117..7b2b19a2 100644 --- a/src/rmodels.c +++ b/src/rmodels.c @@ -12,6 +12,7 @@ * #define SUPPORT_FILEFORMAT_IQM * #define SUPPORT_FILEFORMAT_GLTF * #define SUPPORT_FILEFORMAT_VOX +* #define SUPPORT_FILEFORMAT_M3D * Selected desired fileformats to be supported for model data loading. * * #define SUPPORT_MESH_GENERATION @@ -86,6 +87,19 @@ #include "external/vox_loader.h" // VOX file format loading (MagikaVoxel) #endif +#if defined(SUPPORT_FILEFORMAT_M3D) + #define M3D_MALLOC RL_MALLOC + #define M3D_REALLOC RL_REALLOC + #define M3D_FREE RL_FREE + + // Let the M3D loader know about stb_image is used in this project, + // to allow it to use on textures loading + #include "external/stb_image.h" + + #define M3D_IMPLEMENTATION + #include "external/m3d.h" // Model3D file format loading +#endif + #if defined(SUPPORT_MESH_GENERATION) #define PAR_MALLOC(T, N) ((T*)RL_MALLOC(N*sizeof(T))) #define PAR_CALLOC(T, N) ((T*)RL_CALLOC(N*sizeof(T), 1)) @@ -141,6 +155,9 @@ static Model LoadGLTF(const char *fileName); // Load GLTF mesh data #if defined(SUPPORT_FILEFORMAT_VOX) static Model LoadVOX(const char *filename); // Load VOX mesh data #endif +#if defined(SUPPORT_FILEFORMAT_M3D) +static Model LoadM3D(const char *filename); // Load M3D mesh data +#endif //---------------------------------------------------------------------------------- // Module Functions Definition @@ -5101,4 +5118,156 @@ static Model LoadVOX(const char *fileName) } #endif +#if defined(SUPPORT_FILEFORMAT_M3D) +// Hook LoadFileData()/UnloadFileData() calls to M3D loaders +unsigned char *m3d_loaderhook(char *fn, unsigned int *len) { return LoadFileData((const char *)fn, len); } +void m3d_freehook(void *data) { UnloadFileData((unsigned char *)data); } + +// Load M3D mesh data +static Model LoadM3D(const char *fileName) +{ + Model model = { 0 }; + + m3d_t *m3d = NULL; + m3dp_t *prop = NULL; + unsigned int bytesRead = 0; + unsigned char *fileData = LoadFileData(fileName, &bytesRead); + int i, j, k, l, mi = -2; + + if (fileData != NULL) + { + m3d = m3d_load(fileData, m3d_loaderhook, m3d_freehook, NULL); + + if (!m3d || (m3d->errcode != M3D_SUCCESS)) + { + TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to load M3D data", fileName); + return model; + } + else TRACELOG(LOG_INFO, "MODEL: [%s] M3D data loaded successfully: %i faces/%i materials", fileName, m3d->numface, m3d->nummaterial); + + if (m3d->nummaterial > 0) + { + model.meshCount = model.materialCount = m3d->nummaterial; + TRACELOG(LOG_INFO, "MODEL: model has %i material meshes", model.materialCount); + } + else + { + model.meshCount = model.materialCount = 1; + TRACELOG(LOG_INFO, "MODEL: No materials, putting all meshes in a default material"); + } + + model.meshes = (Mesh *)RL_CALLOC(model.meshCount, sizeof(Mesh)); + model.meshMaterial = (int *)RL_CALLOC(model.meshCount, sizeof(int)); + model.materials = (Material *)RL_CALLOC(model.meshCount + 1, sizeof(Material)); + + // Map no material to index 0 with default shader, everything else materialid + 1 + model.materials[0] = LoadMaterialDefault(); + model.materials[0].maps[MATERIAL_MAP_DIFFUSE].texture = (Texture2D){ rlGetTextureIdDefault(), 1, 1, 1, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8 }; + + for (i = l = 0, k = -1; i < m3d->numface; i++, l++) + { + // Materials are grouped together + if (mi != m3d->face[i].materialid) + { + k++; + mi = m3d->face[i].materialid; + + for (j = i, l = 0; (j < m3d->numface) && (mi == m3d->face[j].materialid); j++, l++); + + model.meshes[k].vertexCount = l*3; + model.meshes[k].triangleCount = l; + model.meshes[k].vertices = (float *)RL_CALLOC(model.meshes[k].vertexCount*3, sizeof(float)); + model.meshes[k].texcoords = (float *)RL_CALLOC(model.meshes[k].vertexCount*2, sizeof(float)); + model.meshes[k].normals = (float *)RL_CALLOC(model.meshes[k].vertexCount*3, sizeof(float)); + model.meshMaterial[k] = mi + 1; + l = 0; + } + + // Process meshes per material, add triangles + model.meshes[k].vertices[l * 9 + 0] = m3d->vertex[m3d->face[i].vertex[0]].x; + model.meshes[k].vertices[l * 9 + 1] = m3d->vertex[m3d->face[i].vertex[0]].y; + model.meshes[k].vertices[l * 9 + 2] = m3d->vertex[m3d->face[i].vertex[0]].z; + model.meshes[k].vertices[l * 9 + 3] = m3d->vertex[m3d->face[i].vertex[1]].x; + model.meshes[k].vertices[l * 9 + 4] = m3d->vertex[m3d->face[i].vertex[1]].y; + model.meshes[k].vertices[l * 9 + 5] = m3d->vertex[m3d->face[i].vertex[1]].z; + model.meshes[k].vertices[l * 9 + 6] = m3d->vertex[m3d->face[i].vertex[2]].x; + model.meshes[k].vertices[l * 9 + 7] = m3d->vertex[m3d->face[i].vertex[2]].y; + model.meshes[k].vertices[l * 9 + 8] = m3d->vertex[m3d->face[i].vertex[2]].z; + + if (m3d->face[i].texcoord[0] != M3D_UNDEF) + { + model.meshes[k].texcoords[l * 6 + 0] = m3d->tmap[m3d->face[i].texcoord[0]].u; + model.meshes[k].texcoords[l * 6 + 1] = m3d->tmap[m3d->face[i].texcoord[0]].v; + model.meshes[k].texcoords[l * 6 + 2] = m3d->tmap[m3d->face[i].texcoord[1]].u; + model.meshes[k].texcoords[l * 6 + 3] = m3d->tmap[m3d->face[i].texcoord[1]].v; + model.meshes[k].texcoords[l * 6 + 4] = m3d->tmap[m3d->face[i].texcoord[2]].u; + model.meshes[k].texcoords[l * 6 + 5] = m3d->tmap[m3d->face[i].texcoord[2]].v; + } + + if (m3d->face[i].normal[0] != M3D_UNDEF) + { + model.meshes[k].normals[l * 9 + 0] = m3d->vertex[m3d->face[i].normal[0]].x; + model.meshes[k].normals[l * 9 + 1] = m3d->vertex[m3d->face[i].normal[0]].y; + model.meshes[k].normals[l * 9 + 2] = m3d->vertex[m3d->face[i].normal[0]].z; + model.meshes[k].normals[l * 9 + 3] = m3d->vertex[m3d->face[i].normal[1]].x; + model.meshes[k].normals[l * 9 + 4] = m3d->vertex[m3d->face[i].normal[1]].y; + model.meshes[k].normals[l * 9 + 5] = m3d->vertex[m3d->face[i].normal[1]].z; + model.meshes[k].normals[l * 9 + 6] = m3d->vertex[m3d->face[i].normal[2]].x; + model.meshes[k].normals[l * 9 + 7] = m3d->vertex[m3d->face[i].normal[2]].y; + model.meshes[k].normals[l * 9 + 8] = m3d->vertex[m3d->face[i].normal[2]].z; + } + } + + for (i = 0; i < m3d->nummaterial; i++) + { + model.materials[i + 1] = LoadMaterialDefault(); + model.materials[i + 1].maps[MATERIAL_MAP_DIFFUSE].texture = (Texture2D){ rlGetTextureIdDefault(), 1, 1, 1, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8 }; + + for (j = 0; j < m3d->material[i].numprop; j++) + { + prop = &m3d->material[i].prop[j]; + + switch (prop->type) + { + case m3dp_Kd: + { + memcpy(&model.materials[i + 1].maps[MATERIAL_MAP_DIFFUSE].color, &prop->value.color, 4); + model.materials[i + 1].maps[MATERIAL_MAP_DIFFUSE].value = 0.0f; + } break; + case m3dp_Ks: + { + memcpy(&model.materials[i + 1].maps[MATERIAL_MAP_SPECULAR].color, &prop->value.color, 4); + model.materials[i + 1].maps[MATERIAL_MAP_SPECULAR].value = 0.0f; + } break; + case m3dp_Ke: + { + memcpy(&model.materials[i + 1].maps[MATERIAL_MAP_EMISSION].color, &prop->value.color, 4); + model.materials[i + 1].maps[MATERIAL_MAP_EMISSION].value = 0.0f; + } break; + case m3dp_Pm: + { + model.materials[i + 1].maps[MATERIAL_MAP_METALNESS].value = prop->value.fnum; + } break; + case m3dp_Pr: + { + model.materials[i + 1].maps[MATERIAL_MAP_ROUGHNESS].value = prop->value.fnum; + } break; + case m3dp_Ps: + { + model.materials[i + 1].maps[MATERIAL_MAP_NORMAL].color = WHITE; + model.materials[i + 1].maps[MATERIAL_MAP_NORMAL].value = prop->value.fnum; + } break; + default: break; + } + } + } + + m3d_free(m3d); + UnloadFileData(fileData); + } + + return model; +} +#endif + #endif // SUPPORT_MODULE_RMODELS