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raylib-src/src/models.c

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/**********************************************************************************************
*
* raylib.models - Basic functions to deal with 3d shapes and 3d models
*
* CONFIGURATION:
*
* #define SUPPORT_FILEFORMAT_OBJ
* #define SUPPORT_FILEFORMAT_MTL
* #define SUPPORT_FILEFORMAT_IQM
* #define SUPPORT_FILEFORMAT_GLTF
* Selected desired fileformats to be supported for model data loading.
*
* #define SUPPORT_MESH_GENERATION
* Support procedural mesh generation functions, uses external par_shapes.h library
* NOTE: Some generated meshes DO NOT include generated texture coordinates
*
*
* LICENSE: zlib/libpng
*
* Copyright (c) 2013-2021 Ramon Santamaria (@raysan5)
*
* This software is provided "as-is", without any express or implied warranty. In no event
* will the authors be held liable for any damages arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose, including commercial
* applications, and to alter it and redistribute it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not claim that you
* wrote the original software. If you use this software in a product, an acknowledgment
* in the product documentation would be appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be misrepresented
* as being the original software.
*
* 3. This notice may not be removed or altered from any source distribution.
*
**********************************************************************************************/
#include "raylib.h" // Declares module functions
// Check if config flags have been externally provided on compilation line
#if !defined(EXTERNAL_CONFIG_FLAGS)
#include "config.h" // Defines module configuration flags
#endif
#include "utils.h" // Required for: LoadFileData(), LoadFileText(), SaveFileText()
#include <stdio.h> // Required for: sprintf()
#include <stdlib.h> // Required for: malloc(), free()
#include <string.h> // Required for: memcmp(), strlen()
#include <math.h> // Required for: sinf(), cosf(), sqrtf(), fabsf()
#if defined(_WIN32)
#include <direct.h> // Required for: _chdir() [Used in LoadOBJ()]
#define CHDIR _chdir
#else
#include <unistd.h> // Required for: chdir() (POSIX) [Used in LoadOBJ()]
#define CHDIR chdir
#endif
#include "rlgl.h" // raylib OpenGL abstraction layer to OpenGL 1.1, 2.1, 3.3+ or ES2
#if defined(SUPPORT_FILEFORMAT_OBJ) || defined(SUPPORT_FILEFORMAT_MTL)
#define TINYOBJ_MALLOC RL_MALLOC
#define TINYOBJ_CALLOC RL_CALLOC
#define TINYOBJ_REALLOC RL_REALLOC
#define TINYOBJ_FREE RL_FREE
#define TINYOBJ_LOADER_C_IMPLEMENTATION
#include "external/tinyobj_loader_c.h" // OBJ/MTL file formats loading
#endif
#if defined(SUPPORT_FILEFORMAT_GLTF)
#define CGLTF_MALLOC RL_MALLOC
#define CGLTF_FREE RL_FREE
#define CGLTF_IMPLEMENTATION
#include "external/cgltf.h" // glTF file format loading
#include "external/stb_image.h" // glTF texture images 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))
#define PAR_REALLOC(T, BUF, N) ((T*)RL_REALLOC(BUF, sizeof(T)*(N)))
#define PAR_FREE RL_FREE
#define PAR_SHAPES_IMPLEMENTATION
#include "external/par_shapes.h" // Shapes 3d parametric generation
#endif
//----------------------------------------------------------------------------------
// Defines and Macros
//----------------------------------------------------------------------------------
// ...
//----------------------------------------------------------------------------------
// Types and Structures Definition
//----------------------------------------------------------------------------------
// ...
//----------------------------------------------------------------------------------
// Global Variables Definition
//----------------------------------------------------------------------------------
// ...
//----------------------------------------------------------------------------------
// Module specific Functions Declaration
//----------------------------------------------------------------------------------
#if defined(SUPPORT_FILEFORMAT_OBJ)
static Model LoadOBJ(const char *fileName); // Load OBJ mesh data
#endif
#if defined(SUPPORT_FILEFORMAT_IQM)
static Model LoadIQM(const char *fileName); // Load IQM mesh data
static ModelAnimation *LoadIQMModelAnimations(const char *fileName, int *animCount); // Load IQM animation data
#endif
#if defined(SUPPORT_FILEFORMAT_GLTF)
static Model LoadGLTF(const char *fileName); // Load GLTF mesh data
static ModelAnimation *LoadGLTFModelAnimations(const char *fileName, int *animCount); // Load GLTF animation data
static void LoadGLTFMaterial(Model *model, const char *fileName, const cgltf_data *data);
static void LoadGLTFMesh(cgltf_data *data, cgltf_mesh* mesh, Model* outModel, Matrix currentTransform, int* primitiveIndex, const char *fileName);
static void LoadGLTFNode(cgltf_data *data, cgltf_node* node, Model* outModel, Matrix currentTransform, int* primitiveIndex, const char *fileName);
static void InitGLTFBones(Model *model, const cgltf_data *data);
static void BindGLTFPrimitiveToBones(Model *model, const cgltf_data *data, int primitiveIndex);
static void GetGLTFPrimitiveCount(cgltf_node* node, int* outCount);
static bool ReadGLTFValue(cgltf_accessor* acc, unsigned int index, void *variable);
static void *ReadGLTFValuesAs(cgltf_accessor* acc, cgltf_component_type type, bool adjustOnDownCasting);
#endif
//----------------------------------------------------------------------------------
// Module Functions Definition
//----------------------------------------------------------------------------------
// Draw a line in 3D world space
void DrawLine3D(Vector3 startPos, Vector3 endPos, Color color)
{
// WARNING: Be careful with internal buffer vertex alignment
// when using RL_LINES or RL_TRIANGLES, data is aligned to fit
// lines-triangles-quads in the same indexed buffers!!!
rlCheckRenderBatchLimit(8);
rlBegin(RL_LINES);
rlColor4ub(color.r, color.g, color.b, color.a);
rlVertex3f(startPos.x, startPos.y, startPos.z);
rlVertex3f(endPos.x, endPos.y, endPos.z);
rlEnd();
}
// Draw a point in 3D space, actually a small line
void DrawPoint3D(Vector3 position, Color color)
{
rlCheckRenderBatchLimit(8);
rlPushMatrix();
rlTranslatef(position.x, position.y, position.z);
rlBegin(RL_LINES);
rlColor4ub(color.r, color.g, color.b, color.a);
rlVertex3f(0.0f, 0.0f, 0.0f);
rlVertex3f(0.0f, 0.0f, 0.1f);
rlEnd();
rlPopMatrix();
}
// Draw a circle in 3D world space
void DrawCircle3D(Vector3 center, float radius, Vector3 rotationAxis, float rotationAngle, Color color)
{
rlCheckRenderBatchLimit(2*36);
rlPushMatrix();
rlTranslatef(center.x, center.y, center.z);
rlRotatef(rotationAngle, rotationAxis.x, rotationAxis.y, rotationAxis.z);
rlBegin(RL_LINES);
for (int i = 0; i < 360; i += 10)
{
rlColor4ub(color.r, color.g, color.b, color.a);
rlVertex3f(sinf(DEG2RAD*i)*radius, cosf(DEG2RAD*i)*radius, 0.0f);
rlVertex3f(sinf(DEG2RAD*(i + 10))*radius, cosf(DEG2RAD*(i + 10))*radius, 0.0f);
}
rlEnd();
rlPopMatrix();
}
// Draw a color-filled triangle (vertex in counter-clockwise order!)
void DrawTriangle3D(Vector3 v1, Vector3 v2, Vector3 v3, Color color)
{
rlCheckRenderBatchLimit(3);
rlBegin(RL_TRIANGLES);
rlColor4ub(color.r, color.g, color.b, color.a);
rlVertex3f(v1.x, v1.y, v1.z);
rlVertex3f(v2.x, v2.y, v2.z);
rlVertex3f(v3.x, v3.y, v3.z);
rlEnd();
}
// Draw a triangle strip defined by points
void DrawTriangleStrip3D(Vector3 *points, int pointsCount, Color color)
{
if (pointsCount >= 3)
{
rlCheckRenderBatchLimit(3*(pointsCount - 2));
rlBegin(RL_TRIANGLES);
rlColor4ub(color.r, color.g, color.b, color.a);
for (int i = 2; i < pointsCount; i++)
{
if ((i%2) == 0)
{
rlVertex3f(points[i].x, points[i].y, points[i].z);
rlVertex3f(points[i - 2].x, points[i - 2].y, points[i - 2].z);
rlVertex3f(points[i - 1].x, points[i - 1].y, points[i - 1].z);
}
else
{
rlVertex3f(points[i].x, points[i].y, points[i].z);
rlVertex3f(points[i - 1].x, points[i - 1].y, points[i - 1].z);
rlVertex3f(points[i - 2].x, points[i - 2].y, points[i - 2].z);
}
}
rlEnd();
}
}
// Draw cube
// NOTE: Cube position is the center position
void DrawCube(Vector3 position, float width, float height, float length, Color color)
{
float x = 0.0f;
float y = 0.0f;
float z = 0.0f;
rlCheckRenderBatchLimit(36);
rlPushMatrix();
// NOTE: Transformation is applied in inverse order (scale -> rotate -> translate)
rlTranslatef(position.x, position.y, position.z);
//rlRotatef(45, 0, 1, 0);
//rlScalef(1.0f, 1.0f, 1.0f); // NOTE: Vertices are directly scaled on definition
rlBegin(RL_TRIANGLES);
rlColor4ub(color.r, color.g, color.b, color.a);
// Front face
rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Left
rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Right
rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Left
rlVertex3f(x + width/2, y + height/2, z + length/2); // Top Right
rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Left
rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Right
// Back face
rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom Left
rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left
rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Right
rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Right
rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Right
rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left
// Top face
rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left
rlVertex3f(x - width/2, y + height/2, z + length/2); // Bottom Left
rlVertex3f(x + width/2, y + height/2, z + length/2); // Bottom Right
rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Right
rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left
rlVertex3f(x + width/2, y + height/2, z + length/2); // Bottom Right
// Bottom face
rlVertex3f(x - width/2, y - height/2, z - length/2); // Top Left
rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Right
rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Left
rlVertex3f(x + width/2, y - height/2, z - length/2); // Top Right
rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Right
rlVertex3f(x - width/2, y - height/2, z - length/2); // Top Left
// Right face
rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Right
rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Right
rlVertex3f(x + width/2, y + height/2, z + length/2); // Top Left
rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Left
rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Right
rlVertex3f(x + width/2, y + height/2, z + length/2); // Top Left
// Left face
rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom Right
rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Left
rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Right
rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Left
rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Left
rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom Right
rlEnd();
rlPopMatrix();
}
// Draw cube (Vector version)
void DrawCubeV(Vector3 position, Vector3 size, Color color)
{
DrawCube(position, size.x, size.y, size.z, color);
}
// Draw cube wires
void DrawCubeWires(Vector3 position, float width, float height, float length, Color color)
{
float x = 0.0f;
float y = 0.0f;
float z = 0.0f;
rlCheckRenderBatchLimit(36);
rlPushMatrix();
rlTranslatef(position.x, position.y, position.z);
rlBegin(RL_LINES);
rlColor4ub(color.r, color.g, color.b, color.a);
// Front Face -----------------------------------------------------
// Bottom Line
rlVertex3f(x-width/2, y-height/2, z+length/2); // Bottom Left
rlVertex3f(x+width/2, y-height/2, z+length/2); // Bottom Right
// Left Line
rlVertex3f(x+width/2, y-height/2, z+length/2); // Bottom Right
rlVertex3f(x+width/2, y+height/2, z+length/2); // Top Right
// Top Line
rlVertex3f(x+width/2, y+height/2, z+length/2); // Top Right
rlVertex3f(x-width/2, y+height/2, z+length/2); // Top Left
// Right Line
rlVertex3f(x-width/2, y+height/2, z+length/2); // Top Left
rlVertex3f(x-width/2, y-height/2, z+length/2); // Bottom Left
// Back Face ------------------------------------------------------
// Bottom Line
rlVertex3f(x-width/2, y-height/2, z-length/2); // Bottom Left
rlVertex3f(x+width/2, y-height/2, z-length/2); // Bottom Right
// Left Line
rlVertex3f(x+width/2, y-height/2, z-length/2); // Bottom Right
rlVertex3f(x+width/2, y+height/2, z-length/2); // Top Right
// Top Line
rlVertex3f(x+width/2, y+height/2, z-length/2); // Top Right
rlVertex3f(x-width/2, y+height/2, z-length/2); // Top Left
// Right Line
rlVertex3f(x-width/2, y+height/2, z-length/2); // Top Left
rlVertex3f(x-width/2, y-height/2, z-length/2); // Bottom Left
// Top Face -------------------------------------------------------
// Left Line
rlVertex3f(x-width/2, y+height/2, z+length/2); // Top Left Front
rlVertex3f(x-width/2, y+height/2, z-length/2); // Top Left Back
// Right Line
rlVertex3f(x+width/2, y+height/2, z+length/2); // Top Right Front
rlVertex3f(x+width/2, y+height/2, z-length/2); // Top Right Back
// Bottom Face ---------------------------------------------------
// Left Line
rlVertex3f(x-width/2, y-height/2, z+length/2); // Top Left Front
rlVertex3f(x-width/2, y-height/2, z-length/2); // Top Left Back
// Right Line
rlVertex3f(x+width/2, y-height/2, z+length/2); // Top Right Front
rlVertex3f(x+width/2, y-height/2, z-length/2); // Top Right Back
rlEnd();
rlPopMatrix();
}
// Draw cube wires (vector version)
void DrawCubeWiresV(Vector3 position, Vector3 size, Color color)
{
DrawCubeWires(position, size.x, size.y, size.z, color);
}
// Draw cube
// NOTE: Cube position is the center position
void DrawCubeTexture(Texture2D texture, Vector3 position, float width, float height, float length, Color color)
{
float x = position.x;
float y = position.y;
float z = position.z;
rlCheckRenderBatchLimit(36);
rlSetTexture(texture.id);
//rlPushMatrix();
// NOTE: Transformation is applied in inverse order (scale -> rotate -> translate)
//rlTranslatef(2.0f, 0.0f, 0.0f);
//rlRotatef(45, 0, 1, 0);
//rlScalef(2.0f, 2.0f, 2.0f);
rlBegin(RL_QUADS);
rlColor4ub(color.r, color.g, color.b, color.a);
// Front Face
rlNormal3f(0.0f, 0.0f, 1.0f); // Normal Pointing Towards Viewer
rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Left Of The Texture and Quad
rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Right Of The Texture and Quad
rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x + width/2, y + height/2, z + length/2); // Top Right Of The Texture and Quad
rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Left Of The Texture and Quad
// Back Face
rlNormal3f(0.0f, 0.0f, - 1.0f); // Normal Pointing Away From Viewer
rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom Right Of The Texture and Quad
rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Right Of The Texture and Quad
rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Left Of The Texture and Quad
rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Left Of The Texture and Quad
// Top Face
rlNormal3f(0.0f, 1.0f, 0.0f); // Normal Pointing Up
rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left Of The Texture and Quad
rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x - width/2, y + height/2, z + length/2); // Bottom Left Of The Texture and Quad
rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x + width/2, y + height/2, z + length/2); // Bottom Right Of The Texture and Quad
rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Right Of The Texture and Quad
// Bottom Face
rlNormal3f(0.0f, - 1.0f, 0.0f); // Normal Pointing Down
rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x - width/2, y - height/2, z - length/2); // Top Right Of The Texture and Quad
rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x + width/2, y - height/2, z - length/2); // Top Left Of The Texture and Quad
rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Left Of The Texture and Quad
rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Right Of The Texture and Quad
// Right face
rlNormal3f(1.0f, 0.0f, 0.0f); // Normal Pointing Right
rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Right Of The Texture and Quad
rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Right Of The Texture and Quad
rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x + width/2, y + height/2, z + length/2); // Top Left Of The Texture and Quad
rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Left Of The Texture and Quad
// Left Face
rlNormal3f( - 1.0f, 0.0f, 0.0f); // Normal Pointing Left
rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom Left Of The Texture and Quad
rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Right Of The Texture and Quad
rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Right Of The Texture and Quad
rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left Of The Texture and Quad
rlEnd();
//rlPopMatrix();
rlSetTexture(0);
}
// Draw sphere
void DrawSphere(Vector3 centerPos, float radius, Color color)
{
DrawSphereEx(centerPos, radius, 16, 16, color);
}
// Draw sphere with extended parameters
void DrawSphereEx(Vector3 centerPos, float radius, int rings, int slices, Color color)
{
int numVertex = (rings + 2)*slices*6;
rlCheckRenderBatchLimit(numVertex);
rlPushMatrix();
// NOTE: Transformation is applied in inverse order (scale -> translate)
rlTranslatef(centerPos.x, centerPos.y, centerPos.z);
rlScalef(radius, radius, radius);
rlBegin(RL_TRIANGLES);
rlColor4ub(color.r, color.g, color.b, color.a);
for (int i = 0; i < (rings + 2); i++)
{
for (int j = 0; j < slices; j++)
{
rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*i))*sinf(DEG2RAD*(360.0f*j/slices)),
sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*i)),
cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*i))*cosf(DEG2RAD*(360.0f*j/slices)));
rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*sinf(DEG2RAD*(360.0f*(j + 1)/slices)),
sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1))),
cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*cosf(DEG2RAD*(360.0f*(j + 1)/slices)));
rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*sinf(DEG2RAD*(360.0f*j/slices)),
sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1))),
cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*cosf(DEG2RAD*(360.0f*j/slices)));
rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*i))*sinf(DEG2RAD*(360.0f*j/slices)),
sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*i)),
cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*i))*cosf(DEG2RAD*(360.0f*j/slices)));
rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i)))*sinf(DEG2RAD*(360.0f*(j + 1)/slices)),
sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i))),
cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i)))*cosf(DEG2RAD*(360.0f*(j + 1)/slices)));
rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*sinf(DEG2RAD*(360.0f*(j + 1)/slices)),
sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1))),
cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*cosf(DEG2RAD*(360.0f*(j + 1)/slices)));
}
}
rlEnd();
rlPopMatrix();
}
// Draw sphere wires
void DrawSphereWires(Vector3 centerPos, float radius, int rings, int slices, Color color)
{
int numVertex = (rings + 2)*slices*6;
rlCheckRenderBatchLimit(numVertex);
rlPushMatrix();
// NOTE: Transformation is applied in inverse order (scale -> translate)
rlTranslatef(centerPos.x, centerPos.y, centerPos.z);
rlScalef(radius, radius, radius);
rlBegin(RL_LINES);
rlColor4ub(color.r, color.g, color.b, color.a);
for (int i = 0; i < (rings + 2); i++)
{
for (int j = 0; j < slices; j++)
{
rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*i))*sinf(DEG2RAD*(360.0f*j/slices)),
sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*i)),
cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*i))*cosf(DEG2RAD*(360.0f*j/slices)));
rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*sinf(DEG2RAD*(360.0f*(j + 1)/slices)),
sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1))),
cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*cosf(DEG2RAD*(360.0f*(j + 1)/slices)));
rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*sinf(DEG2RAD*(360.0f*(j + 1)/slices)),
sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1))),
cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*cosf(DEG2RAD*(360.0f*(j + 1)/slices)));
rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*sinf(DEG2RAD*(360.0f*j/slices)),
sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1))),
cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*cosf(DEG2RAD*(360.0f*j/slices)));
rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*sinf(DEG2RAD*(360.0f*j/slices)),
sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1))),
cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*(i + 1)))*cosf(DEG2RAD*(360.0f*j/slices)));
rlVertex3f(cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*i))*sinf(DEG2RAD*(360.0f*j/slices)),
sinf(DEG2RAD*(270 + (180.0f/(rings + 1))*i)),
cosf(DEG2RAD*(270 + (180.0f/(rings + 1))*i))*cosf(DEG2RAD*(360.0f*j/slices)));
}
}
rlEnd();
rlPopMatrix();
}
// Draw a cylinder
// NOTE: It could be also used for pyramid and cone
void DrawCylinder(Vector3 position, float radiusTop, float radiusBottom, float height, int sides, Color color)
{
if (sides < 3) sides = 3;
int numVertex = sides*6;
rlCheckRenderBatchLimit(numVertex);
rlPushMatrix();
rlTranslatef(position.x, position.y, position.z);
rlBegin(RL_TRIANGLES);
rlColor4ub(color.r, color.g, color.b, color.a);
if (radiusTop > 0)
{
// Draw Body -------------------------------------------------------------------------------------
for (int i = 0; i < 360; i += 360/sides)
{
rlVertex3f(sinf(DEG2RAD*i)*radiusBottom, 0, cosf(DEG2RAD*i)*radiusBottom); //Bottom Left
rlVertex3f(sinf(DEG2RAD*(i + 360.0f/sides))*radiusBottom, 0, cosf(DEG2RAD*(i + 360.0f/sides))*radiusBottom); //Bottom Right
rlVertex3f(sinf(DEG2RAD*(i + 360.0f/sides))*radiusTop, height, cosf(DEG2RAD*(i + 360.0f/sides))*radiusTop); //Top Right
rlVertex3f(sinf(DEG2RAD*i)*radiusTop, height, cosf(DEG2RAD*i)*radiusTop); //Top Left
rlVertex3f(sinf(DEG2RAD*i)*radiusBottom, 0, cosf(DEG2RAD*i)*radiusBottom); //Bottom Left
rlVertex3f(sinf(DEG2RAD*(i + 360.0f/sides))*radiusTop, height, cosf(DEG2RAD*(i + 360.0f/sides))*radiusTop); //Top Right
}
// Draw Cap --------------------------------------------------------------------------------------
for (int i = 0; i < 360; i += 360/sides)
{
rlVertex3f(0, height, 0);
rlVertex3f(sinf(DEG2RAD*i)*radiusTop, height, cosf(DEG2RAD*i)*radiusTop);
rlVertex3f(sinf(DEG2RAD*(i + 360.0f/sides))*radiusTop, height, cosf(DEG2RAD*(i + 360.0f/sides))*radiusTop);
}
}
else
{
// Draw Cone -------------------------------------------------------------------------------------
for (int i = 0; i < 360; i += 360/sides)
{
rlVertex3f(0, height, 0);
rlVertex3f(sinf(DEG2RAD*i)*radiusBottom, 0, cosf(DEG2RAD*i)*radiusBottom);
rlVertex3f(sinf(DEG2RAD*(i + 360.0f/sides))*radiusBottom, 0, cosf(DEG2RAD*(i + 360.0f/sides))*radiusBottom);
}
}
// Draw Base -----------------------------------------------------------------------------------------
for (int i = 0; i < 360; i += 360/sides)
{
rlVertex3f(0, 0, 0);
rlVertex3f(sinf(DEG2RAD*(i + 360.0f/sides))*radiusBottom, 0, cosf(DEG2RAD*(i + 360.0f/sides))*radiusBottom);
rlVertex3f(sinf(DEG2RAD*i)*radiusBottom, 0, cosf(DEG2RAD*i)*radiusBottom);
}
rlEnd();
rlPopMatrix();
}
// Draw a wired cylinder
// NOTE: It could be also used for pyramid and cone
void DrawCylinderWires(Vector3 position, float radiusTop, float radiusBottom, float height, int sides, Color color)
{
if (sides < 3) sides = 3;
int numVertex = sides*8;
rlCheckRenderBatchLimit(numVertex);
rlPushMatrix();
rlTranslatef(position.x, position.y, position.z);
rlBegin(RL_LINES);
rlColor4ub(color.r, color.g, color.b, color.a);
for (int i = 0; i < 360; i += 360/sides)
{
rlVertex3f(sinf(DEG2RAD*i)*radiusBottom, 0, cosf(DEG2RAD*i)*radiusBottom);
rlVertex3f(sinf(DEG2RAD*(i + 360.0f/sides))*radiusBottom, 0, cosf(DEG2RAD*(i + 360.0f/sides))*radiusBottom);
rlVertex3f(sinf(DEG2RAD*(i + 360.0f/sides))*radiusBottom, 0, cosf(DEG2RAD*(i + 360.0f/sides))*radiusBottom);
rlVertex3f(sinf(DEG2RAD*(i + 360.0f/sides))*radiusTop, height, cosf(DEG2RAD*(i + 360.0f/sides))*radiusTop);
rlVertex3f(sinf(DEG2RAD*(i + 360.0f/sides))*radiusTop, height, cosf(DEG2RAD*(i + 360.0f/sides))*radiusTop);
rlVertex3f(sinf(DEG2RAD*i)*radiusTop, height, cosf(DEG2RAD*i)*radiusTop);
rlVertex3f(sinf(DEG2RAD*i)*radiusTop, height, cosf(DEG2RAD*i)*radiusTop);
rlVertex3f(sinf(DEG2RAD*i)*radiusBottom, 0, cosf(DEG2RAD*i)*radiusBottom);
}
rlEnd();
rlPopMatrix();
}
// Draw a plane
void DrawPlane(Vector3 centerPos, Vector2 size, Color color)
{
rlCheckRenderBatchLimit(4);
// NOTE: Plane is always created on XZ ground
rlPushMatrix();
rlTranslatef(centerPos.x, centerPos.y, centerPos.z);
rlScalef(size.x, 1.0f, size.y);
rlBegin(RL_QUADS);
rlColor4ub(color.r, color.g, color.b, color.a);
rlNormal3f(0.0f, 1.0f, 0.0f);
rlVertex3f(-0.5f, 0.0f, -0.5f);
rlVertex3f(-0.5f, 0.0f, 0.5f);
rlVertex3f(0.5f, 0.0f, 0.5f);
rlVertex3f(0.5f, 0.0f, -0.5f);
rlEnd();
rlPopMatrix();
}
// Draw a ray line
void DrawRay(Ray ray, Color color)
{
float scale = 10000;
rlBegin(RL_LINES);
rlColor4ub(color.r, color.g, color.b, color.a);
rlColor4ub(color.r, color.g, color.b, color.a);
rlVertex3f(ray.position.x, ray.position.y, ray.position.z);
rlVertex3f(ray.position.x + ray.direction.x*scale, ray.position.y + ray.direction.y*scale, ray.position.z + ray.direction.z*scale);
rlEnd();
}
// Draw a grid centered at (0, 0, 0)
void DrawGrid(int slices, float spacing)
{
int halfSlices = slices/2;
rlCheckRenderBatchLimit((slices + 2)*4);
rlBegin(RL_LINES);
for (int i = -halfSlices; i <= halfSlices; i++)
{
if (i == 0)
{
rlColor3f(0.5f, 0.5f, 0.5f);
rlColor3f(0.5f, 0.5f, 0.5f);
rlColor3f(0.5f, 0.5f, 0.5f);
rlColor3f(0.5f, 0.5f, 0.5f);
}
else
{
rlColor3f(0.75f, 0.75f, 0.75f);
rlColor3f(0.75f, 0.75f, 0.75f);
rlColor3f(0.75f, 0.75f, 0.75f);
rlColor3f(0.75f, 0.75f, 0.75f);
}
rlVertex3f((float)i*spacing, 0.0f, (float)-halfSlices*spacing);
rlVertex3f((float)i*spacing, 0.0f, (float)halfSlices*spacing);
rlVertex3f((float)-halfSlices*spacing, 0.0f, (float)i*spacing);
rlVertex3f((float)halfSlices*spacing, 0.0f, (float)i*spacing);
}
rlEnd();
}
// Load model from files (mesh and material)
Model LoadModel(const char *fileName)
{
Model model = { 0 };
#if defined(SUPPORT_FILEFORMAT_OBJ)
if (IsFileExtension(fileName, ".obj")) model = LoadOBJ(fileName);
#endif
#if defined(SUPPORT_FILEFORMAT_IQM)
if (IsFileExtension(fileName, ".iqm")) model = LoadIQM(fileName);
#endif
#if defined(SUPPORT_FILEFORMAT_GLTF)
if (IsFileExtension(fileName, ".gltf;.glb")) model = LoadGLTF(fileName);
#endif
// Make sure model transform is set to identity matrix!
model.transform = MatrixIdentity();
if (model.meshCount == 0)
{
model.meshCount = 1;
model.meshes = (Mesh *)RL_CALLOC(model.meshCount, sizeof(Mesh));
#if defined(SUPPORT_MESH_GENERATION)
TRACELOG(LOG_WARNING, "MESH: [%s] Failed to load mesh data, default to cube mesh", fileName);
model.meshes[0] = GenMeshCube(1.0f, 1.0f, 1.0f);
#else
TRACELOG(LOG_WARNING, "MESH: [%s] Failed to load mesh data", fileName);
#endif
}
else
{
// Upload vertex data to GPU (static mesh)
for (int i = 0; i < model.meshCount; i++) UploadMesh(&model.meshes[i], false);
}
if (model.materialCount == 0)
{
TRACELOG(LOG_WARNING, "MATERIAL: [%s] Failed to load material data, default to white material", fileName);
model.materialCount = 1;
model.materials = (Material *)RL_CALLOC(model.materialCount, sizeof(Material));
model.materials[0] = LoadMaterialDefault();
if (model.meshMaterial == NULL) model.meshMaterial = (int *)RL_CALLOC(model.meshCount, sizeof(int));
}
return model;
}
// Load model from generated mesh
// WARNING: A shallow copy of mesh is generated, passed by value,
// as long as struct contains pointers to data and some values, we get a copy
// of mesh pointing to same data as original version... be careful!
Model LoadModelFromMesh(Mesh mesh)
{
Model model = { 0 };
model.transform = MatrixIdentity();
model.meshCount = 1;
model.meshes = (Mesh *)RL_CALLOC(model.meshCount, sizeof(Mesh));
model.meshes[0] = mesh;
model.materialCount = 1;
model.materials = (Material *)RL_CALLOC(model.materialCount, sizeof(Material));
model.materials[0] = LoadMaterialDefault();
model.meshMaterial = (int *)RL_CALLOC(model.meshCount, sizeof(int));
model.meshMaterial[0] = 0; // First material index
return model;
}
// Unload model (meshes/materials) from memory (RAM and/or VRAM)
// NOTE: This function takes care of all model elements, for a detailed control
// over them, use UnloadMesh() and UnloadMaterial()
void UnloadModel(Model model)
{
// Unload meshes
for (int i = 0; i < model.meshCount; i++) UnloadMesh(model.meshes[i]);
// Unload materials maps
// NOTE: As the user could be sharing shaders and textures between models,
// we don't unload the material but just free it's maps,
// the user is responsible for freeing models shaders and textures
for (int i = 0; i < model.materialCount; i++) RL_FREE(model.materials[i].maps);
// Unload arrays
RL_FREE(model.meshes);
RL_FREE(model.materials);
RL_FREE(model.meshMaterial);
// Unload animation data
RL_FREE(model.bones);
RL_FREE(model.bindPose);
TRACELOG(LOG_INFO, "MODEL: Unloaded model (and meshes) from RAM and VRAM");
}
// Unload model (but not meshes) from memory (RAM and/or VRAM)
void UnloadModelKeepMeshes(Model model)
{
// Unload materials maps
// NOTE: As the user could be sharing shaders and textures between models,
// we don't unload the material but just free it's maps,
// the user is responsible for freeing models shaders and textures
for (int i = 0; i < model.materialCount; i++) RL_FREE(model.materials[i].maps);
// Unload arrays
RL_FREE(model.meshes);
RL_FREE(model.materials);
RL_FREE(model.meshMaterial);
// Unload animation data
RL_FREE(model.bones);
RL_FREE(model.bindPose);
TRACELOG(LOG_INFO, "MODEL: Unloaded model (but not meshes) from RAM and VRAM");
}
// Upload vertex data into a VAO (if supported) and VBO
void UploadMesh(Mesh *mesh, bool dynamic)
{
if (mesh->vaoId > 0)
{
// Check if mesh has already been loaded in GPU
TRACELOG(LOG_WARNING, "VAO: [ID %i] Trying to re-load an already loaded mesh", mesh->vaoId);
return;
}
mesh->vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VERTEX_BUFFERS, sizeof(unsigned int));
mesh->vaoId = 0; // Vertex Array Object
mesh->vboId[0] = 0; // Vertex buffer: positions
mesh->vboId[1] = 0; // Vertex buffer: texcoords
mesh->vboId[2] = 0; // Vertex buffer: normals
mesh->vboId[3] = 0; // Vertex buffer: colors
mesh->vboId[4] = 0; // Vertex buffer: tangents
mesh->vboId[5] = 0; // Vertex buffer: texcoords2
mesh->vboId[6] = 0; // Vertex buffer: indices
#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
mesh->vaoId = rlLoadVertexArray();
rlEnableVertexArray(mesh->vaoId);
// NOTE: Attributes must be uploaded considering default locations points
// Enable vertex attributes: position (shader-location = 0)
void *vertices = mesh->animVertices != NULL ? mesh->animVertices : mesh->vertices;
mesh->vboId[0] = rlLoadVertexBuffer(vertices, mesh->vertexCount*3*sizeof(float), dynamic);
rlSetVertexAttribute(0, 3, RL_FLOAT, 0, 0, 0);
rlEnableVertexAttribute(0);
// Enable vertex attributes: texcoords (shader-location = 1)
mesh->vboId[1] = rlLoadVertexBuffer(mesh->texcoords, mesh->vertexCount*2*sizeof(float), dynamic);
rlSetVertexAttribute(1, 2, RL_FLOAT, 0, 0, 0);
rlEnableVertexAttribute(1);
if (mesh->normals != NULL)
{
// Enable vertex attributes: normals (shader-location = 2)
void *normals = mesh->animNormals != NULL ? mesh->animNormals : mesh->vertices;
mesh->vboId[2] = rlLoadVertexBuffer(normals, mesh->vertexCount*3*sizeof(float), dynamic);
rlSetVertexAttribute(2, 3, RL_FLOAT, 0, 0, 0);
rlEnableVertexAttribute(2);
}
else
{
// Default color vertex attribute set to WHITE
float value[3] = { 1.0f, 1.0f, 1.0f };
rlSetVertexAttributeDefault(2, value, SHADER_ATTRIB_VEC3, 3);
rlDisableVertexAttribute(2);
}
if (mesh->colors != NULL)
{
// Enable vertex attribute: color (shader-location = 3)
mesh->vboId[3] = rlLoadVertexBuffer(mesh->colors, mesh->vertexCount*4*sizeof(unsigned char), dynamic);
rlSetVertexAttribute(3, 4, RL_UNSIGNED_BYTE, 1, 0, 0);
rlEnableVertexAttribute(3);
}
else
{
// Default color vertex attribute set to WHITE
float value[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
rlSetVertexAttributeDefault(3, value, SHADER_ATTRIB_VEC4, 4);
rlDisableVertexAttribute(3);
}
if (mesh->tangents != NULL)
{
// Enable vertex attribute: tangent (shader-location = 4)
mesh->vboId[4] = rlLoadVertexBuffer(mesh->tangents, mesh->vertexCount*4*sizeof(float), dynamic);
rlSetVertexAttribute(4, 4, RL_FLOAT, 0, 0, 0);
rlEnableVertexAttribute(4);
}
else
{
// Default tangents vertex attribute
float value[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
rlSetVertexAttributeDefault(4, value, SHADER_ATTRIB_VEC4, 4);
rlDisableVertexAttribute(4);
}
if (mesh->texcoords2 != NULL)
{
// Enable vertex attribute: texcoord2 (shader-location = 5)
mesh->vboId[5] = rlLoadVertexBuffer(mesh->texcoords2, mesh->vertexCount*2*sizeof(float), dynamic);
rlSetVertexAttribute(5, 2, RL_FLOAT, 0, 0, 0);
rlEnableVertexAttribute(5);
}
else
{
// Default texcoord2 vertex attribute
float value[2] = { 0.0f, 0.0f };
rlSetVertexAttributeDefault(5, value, SHADER_ATTRIB_VEC2, 2);
rlDisableVertexAttribute(5);
}
if (mesh->indices != NULL)
{
mesh->vboId[6] = rlLoadVertexBufferElement(mesh->indices, mesh->triangleCount*3*sizeof(unsigned short), dynamic);
}
if (mesh->vaoId > 0) TRACELOG(LOG_INFO, "VAO: [ID %i] Mesh uploaded successfully to VRAM (GPU)", mesh->vaoId);
else TRACELOG(LOG_INFO, "VBO: Mesh uploaded successfully to VRAM (GPU)");
rlDisableVertexArray();
#endif
}
// Update mesh vertex data in GPU for a specific buffer index
void UpdateMeshBuffer(Mesh mesh, int index, void *data, int dataSize, int offset)
{
rlUpdateVertexBuffer(mesh.vboId[index], data, dataSize, offset);
}
// Draw a 3d mesh with material and transform
void DrawMesh(Mesh mesh, Material material, Matrix transform)
{
DrawMeshInstanced(mesh, material, &transform, 1);
}
// Draw multiple mesh instances with material and different transforms
void DrawMeshInstanced(Mesh mesh, Material material, Matrix *transforms, int instances)
{
#if defined(GRAPHICS_API_OPENGL_11)
#define GL_VERTEX_ARRAY 0x8074
#define GL_NORMAL_ARRAY 0x8075
#define GL_COLOR_ARRAY 0x8076
#define GL_TEXTURE_COORD_ARRAY 0x8078
rlEnableTexture(material.maps[MATERIAL_MAP_DIFFUSE].texture.id);
rlEnableStatePointer(GL_VERTEX_ARRAY, mesh.vertices);
rlEnableStatePointer(GL_TEXTURE_COORD_ARRAY, mesh.texcoords);
rlEnableStatePointer(GL_NORMAL_ARRAY, mesh.normals);
rlEnableStatePointer(GL_COLOR_ARRAY, mesh.colors);
rlPushMatrix();
rlMultMatrixf(MatrixToFloat(transforms[0]));
rlColor4ub(material.maps[MATERIAL_MAP_DIFFUSE].color.r,
material.maps[MATERIAL_MAP_DIFFUSE].color.g,
material.maps[MATERIAL_MAP_DIFFUSE].color.b,
material.maps[MATERIAL_MAP_DIFFUSE].color.a);
if (mesh.indices != NULL) rlDrawVertexArrayElements(0, mesh.triangleCount*3, mesh.indices);
else rlDrawVertexArray(0, mesh.vertexCount);
rlPopMatrix();
rlDisableStatePointer(GL_VERTEX_ARRAY);
rlDisableStatePointer(GL_TEXTURE_COORD_ARRAY);
rlDisableStatePointer(GL_NORMAL_ARRAY);
rlDisableStatePointer(GL_COLOR_ARRAY);
rlDisableTexture();
#endif
#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
// Check instancing
bool instancing = false;
if (instances < 1) return;
else if (instances > 1) instancing = true;
float16 *instanceTransforms = NULL;
unsigned int instancesVboId = 0;
// Bind shader program
rlEnableShader(material.shader.id);
// Send required data to shader (matrices, values)
//-----------------------------------------------------
// Upload to shader material.colDiffuse
if (material.shader.locs[SHADER_LOC_COLOR_DIFFUSE] != -1)
{
float values[4] = {
(float)material.maps[MATERIAL_MAP_DIFFUSE].color.r/255.0f,
(float)material.maps[MATERIAL_MAP_DIFFUSE].color.g/255.0f,
(float)material.maps[MATERIAL_MAP_DIFFUSE].color.b/255.0f,
(float)material.maps[MATERIAL_MAP_DIFFUSE].color.a/255.0f
};
rlSetUniform(material.shader.locs[SHADER_LOC_COLOR_DIFFUSE], values, SHADER_UNIFORM_VEC4, 1);
}
// Upload to shader material.colSpecular (if location available)
if (material.shader.locs[SHADER_LOC_COLOR_SPECULAR] != -1)
{
float values[4] = {
(float)material.maps[SHADER_LOC_COLOR_SPECULAR].color.r/255.0f,
(float)material.maps[SHADER_LOC_COLOR_SPECULAR].color.g/255.0f,
(float)material.maps[SHADER_LOC_COLOR_SPECULAR].color.b/255.0f,
(float)material.maps[SHADER_LOC_COLOR_SPECULAR].color.a/255.0f
};
rlSetUniform(material.shader.locs[SHADER_LOC_COLOR_SPECULAR], values, SHADER_UNIFORM_VEC4, 1);
}
// Get a copy of current matrices to work with,
// just in case stereo render is required and we need to modify them
// NOTE: At this point the modelview matrix just contains the view matrix (camera)
// That's because BeginMode3D() sets it and there is no model-drawing function
// that modifies it, all use rlPushMatrix() and rlPopMatrix()
Matrix matView = rlGetMatrixModelview();
Matrix matModelView = matView;
Matrix matProjection = rlGetMatrixProjection();
// Upload view and projection matrices (if locations available)
if (material.shader.locs[SHADER_LOC_MATRIX_VIEW] != -1) rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_VIEW], matView);
if (material.shader.locs[SHADER_LOC_MATRIX_PROJECTION] != -1) rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_PROJECTION], matProjection);
if (instancing)
{
// Create instances buffer
instanceTransforms = (float16 *)RL_MALLOC(instances*sizeof(float16));
// Fill buffer with instances transformations as float16 arrays
for (int i = 0; i < instances; i++) instanceTransforms[i] = MatrixToFloatV(transforms[i]);
// Enable mesh VAO to attach new buffer
rlEnableVertexArray(mesh.vaoId);
// This could alternatively use a static VBO and either glMapBuffer() or glBufferSubData().
// It isn't clear which would be reliably faster in all cases and on all platforms,
// anecdotally glMapBuffer() seems very slow (syncs) while glBufferSubData() seems
// no faster, since we're transferring all the transform matrices anyway
instancesVboId = rlLoadVertexBuffer(instanceTransforms, instances*sizeof(float16), false);
// Instances transformation matrices are send to shader attribute location: SHADER_LOC_MATRIX_MODEL
for (unsigned int i = 0; i < 4; i++)
{
rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_MATRIX_MODEL] + i);
rlSetVertexAttribute(material.shader.locs[SHADER_LOC_MATRIX_MODEL] + i, 4, RL_FLOAT, 0, sizeof(Matrix), (void *)(i*sizeof(Vector4)));
rlSetVertexAttributeDivisor(material.shader.locs[SHADER_LOC_MATRIX_MODEL] + i, 1);
}
rlDisableVertexBuffer();
rlDisableVertexArray();
// Accumulate internal matrix transform (push/pop) and view matrix
// NOTE: In this case, model instance transformation must be computed in the shader
matModelView = MatrixMultiply(rlGetMatrixTransform(), matView);
}
else
{
// Model transformation matrix is send to shader uniform location: SHADER_LOC_MATRIX_MODEL
if (material.shader.locs[SHADER_LOC_MATRIX_MODEL] != -1) rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_MODEL], transforms[0]);
// Accumulate several transformations:
// matView: rlgl internal modelview matrix (actually, just view matrix)
// rlGetMatrixTransform(): rlgl internal transform matrix due to push/pop matrix stack
// transform: function parameter transformation
matModelView = MatrixMultiply(transforms[0], MatrixMultiply(rlGetMatrixTransform(), matView));
}
// Upload model normal matrix (if locations available)
if (material.shader.locs[SHADER_LOC_MATRIX_NORMAL] != -1) rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_NORMAL], MatrixTranspose(MatrixInvert(matModelView)));
//-----------------------------------------------------
// Bind active texture maps (if available)
for (int i = 0; i < MAX_MATERIAL_MAPS; i++)
{
if (material.maps[i].texture.id > 0)
{
// Select current shader texture slot
rlActiveTextureSlot(i);
// Enable texture for active slot
if ((i == MATERIAL_MAP_IRRADIANCE) ||
(i == MATERIAL_MAP_PREFILTER) ||
(i == MATERIAL_MAP_CUBEMAP)) rlEnableTextureCubemap(material.maps[i].texture.id);
else rlEnableTexture(material.maps[i].texture.id);
rlSetUniform(material.shader.locs[SHADER_LOC_MAP_DIFFUSE + i], &i, SHADER_UNIFORM_INT, 1);
}
}
// Try binding vertex array objects (VAO)
// or use VBOs if not possible
if (!rlEnableVertexArray(mesh.vaoId))
{
// Bind mesh VBO data: vertex position (shader-location = 0)
rlEnableVertexBuffer(mesh.vboId[0]);
rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_POSITION], 3, RL_FLOAT, 0, 0, 0);
rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_POSITION]);
// Bind mesh VBO data: vertex texcoords (shader-location = 1)
rlEnableVertexBuffer(mesh.vboId[1]);
rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD01], 2, RL_FLOAT, 0, 0, 0);
rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD01]);
if (material.shader.locs[SHADER_LOC_VERTEX_NORMAL] != -1)
{
// Bind mesh VBO data: vertex normals (shader-location = 2)
rlEnableVertexBuffer(mesh.vboId[2]);
rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_NORMAL], 3, RL_FLOAT, 0, 0, 0);
rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_NORMAL]);
}
// Bind mesh VBO data: vertex colors (shader-location = 3, if available)
if (material.shader.locs[SHADER_LOC_VERTEX_COLOR] != -1)
{
if (mesh.vboId[3] != 0)
{
rlEnableVertexBuffer(mesh.vboId[3]);
rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_COLOR], 4, RL_UNSIGNED_BYTE, 1, 0, 0);
rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_COLOR]);
}
else
{
// Set default value for unused attribute
// NOTE: Required when using default shader and no VAO support
float value[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
rlSetVertexAttributeDefault(material.shader.locs[SHADER_LOC_VERTEX_COLOR], value, SHADER_ATTRIB_VEC2, 4);
rlDisableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_COLOR]);
}
}
// Bind mesh VBO data: vertex tangents (shader-location = 4, if available)
if (material.shader.locs[SHADER_LOC_VERTEX_TANGENT] != -1)
{
rlEnableVertexBuffer(mesh.vboId[4]);
rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TANGENT], 4, RL_FLOAT, 0, 0, 0);
rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TANGENT]);
}
// Bind mesh VBO data: vertex texcoords2 (shader-location = 5, if available)
if (material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD02] != -1)
{
rlEnableVertexBuffer(mesh.vboId[5]);
rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD02], 2, RL_FLOAT, 0, 0, 0);
rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD02]);
}
if (mesh.indices != NULL) rlEnableVertexBufferElement(mesh.vboId[6]);
}
int eyesCount = 1;
if (rlIsStereoRenderEnabled()) eyesCount = 2;
for (int eye = 0; eye < eyesCount; eye++)
{
// Calculate model-view-projection matrix (MVP)
Matrix matMVP = MatrixIdentity();
if (eyesCount == 1) matMVP = MatrixMultiply(matModelView, matProjection);
else
{
// Setup current eye viewport (half screen width)
rlViewport(eye*rlGetFramebufferWidth()/2, 0, rlGetFramebufferWidth()/2, rlGetFramebufferHeight());
matMVP = MatrixMultiply(MatrixMultiply(matModelView, rlGetMatrixViewOffsetStereo(eye)), rlGetMatrixProjectionStereo(eye));
}
// Send combined model-view-projection matrix to shader
rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_MVP], matMVP);
if (instancing) // Draw mesh instanced
{
if (mesh.indices != NULL) rlDrawVertexArrayElementsInstanced(0, mesh.triangleCount*3, 0, instances);
else rlDrawVertexArrayInstanced(0, mesh.vertexCount, instances);
}
else // Draw mesh
{
if (mesh.indices != NULL) rlDrawVertexArrayElements(0, mesh.triangleCount*3, 0);
else rlDrawVertexArray(0, mesh.vertexCount);
}
}
// Unbind all binded texture maps
for (int i = 0; i < MAX_MATERIAL_MAPS; i++)
{
// Select current shader texture slot
rlActiveTextureSlot(i);
// Disable texture for active slot
if ((i == MATERIAL_MAP_IRRADIANCE) ||
(i == MATERIAL_MAP_PREFILTER) ||
(i == MATERIAL_MAP_CUBEMAP)) rlDisableTextureCubemap();
else rlDisableTexture();
}
// Disable all possible vertex array objects (or VBOs)
rlDisableVertexArray();
rlDisableVertexBuffer();
rlDisableVertexBufferElement();
// Disable shader program
rlDisableShader();
if (instancing)
{
// Remove instance transforms buffer
rlUnloadVertexBuffer(instancesVboId);
RL_FREE(instanceTransforms);
}
else
{
// Restore rlgl internal modelview and projection matrices
rlSetMatrixModelview(matView);
rlSetMatrixProjection(matProjection);
}
#endif
}
// Unload mesh from memory (RAM and VRAM)
void UnloadMesh(Mesh mesh)
{
// Unload rlgl mesh vboId data
rlUnloadVertexArray(mesh.vaoId);
for (int i = 0; i < MAX_MESH_VERTEX_BUFFERS; i++) rlUnloadVertexBuffer(mesh.vboId[i]);
RL_FREE(mesh.vboId);
RL_FREE(mesh.vertices);
RL_FREE(mesh.texcoords);
RL_FREE(mesh.normals);
RL_FREE(mesh.colors);
RL_FREE(mesh.tangents);
RL_FREE(mesh.texcoords2);
RL_FREE(mesh.indices);
RL_FREE(mesh.animVertices);
RL_FREE(mesh.animNormals);
RL_FREE(mesh.boneWeights);
RL_FREE(mesh.boneIds);
}
// Export mesh data to file
bool ExportMesh(Mesh mesh, const char *fileName)
{
bool success = false;
if (IsFileExtension(fileName, ".obj"))
{
// Estimated data size, it should be enough...
int dataSize = mesh.vertexCount/3* (int)strlen("v 0000.00f 0000.00f 0000.00f") +
mesh.vertexCount/2* (int)strlen("vt 0.000f 0.00f") +
mesh.vertexCount/3* (int)strlen("vn 0.000f 0.00f 0.00f") +
mesh.triangleCount/3* (int)strlen("f 00000/00000/00000 00000/00000/00000 00000/00000/00000");
// NOTE: Text data buffer size is estimated considering mesh data size
char *txtData = (char *)RL_CALLOC(dataSize + 2000, sizeof(char));
int bytesCount = 0;
bytesCount += sprintf(txtData + bytesCount, "# //////////////////////////////////////////////////////////////////////////////////\n");
bytesCount += sprintf(txtData + bytesCount, "# // //\n");
bytesCount += sprintf(txtData + bytesCount, "# // rMeshOBJ exporter v1.0 - Mesh exported as triangle faces and not optimized //\n");
bytesCount += sprintf(txtData + bytesCount, "# // //\n");
bytesCount += sprintf(txtData + bytesCount, "# // more info and bugs-report: github.com/raysan5/raylib //\n");
bytesCount += sprintf(txtData + bytesCount, "# // feedback and support: ray[at]raylib.com //\n");
bytesCount += sprintf(txtData + bytesCount, "# // //\n");
bytesCount += sprintf(txtData + bytesCount, "# // Copyright (c) 2018 Ramon Santamaria (@raysan5) //\n");
bytesCount += sprintf(txtData + bytesCount, "# // //\n");
bytesCount += sprintf(txtData + bytesCount, "# //////////////////////////////////////////////////////////////////////////////////\n\n");
bytesCount += sprintf(txtData + bytesCount, "# Vertex Count: %i\n", mesh.vertexCount);
bytesCount += sprintf(txtData + bytesCount, "# Triangle Count: %i\n\n", mesh.triangleCount);
bytesCount += sprintf(txtData + bytesCount, "g mesh\n");
for (int i = 0, v = 0; i < mesh.vertexCount; i++, v += 3)
{
bytesCount += sprintf(txtData + bytesCount, "v %.2f %.2f %.2f\n", mesh.vertices[v], mesh.vertices[v + 1], mesh.vertices[v + 2]);
}
for (int i = 0, v = 0; i < mesh.vertexCount; i++, v += 2)
{
bytesCount += sprintf(txtData + bytesCount, "vt %.3f %.3f\n", mesh.texcoords[v], mesh.texcoords[v + 1]);
}
for (int i = 0, v = 0; i < mesh.vertexCount; i++, v += 3)
{
bytesCount += sprintf(txtData + bytesCount, "vn %.3f %.3f %.3f\n", mesh.normals[v], mesh.normals[v + 1], mesh.normals[v + 2]);
}
for (int i = 0; i < mesh.triangleCount; i += 3)
{
bytesCount += sprintf(txtData + bytesCount, "f %i/%i/%i %i/%i/%i %i/%i/%i\n", i, i, i, i + 1, i + 1, i + 1, i + 2, i + 2, i + 2);
}
bytesCount += sprintf(txtData + bytesCount, "\n");
// NOTE: Text data length exported is determined by '\0' (NULL) character
success = SaveFileText(fileName, txtData);
RL_FREE(txtData);
}
else if (IsFileExtension(fileName, ".raw"))
{
// TODO: Support additional file formats to export mesh vertex data
}
return success;
}
// Load materials from model file
Material *LoadMaterials(const char *fileName, int *materialCount)
{
Material *materials = NULL;
unsigned int count = 0;
// TODO: Support IQM and GLTF for materials parsing
#if defined(SUPPORT_FILEFORMAT_MTL)
if (IsFileExtension(fileName, ".mtl"))
{
tinyobj_material_t *mats = NULL;
int result = tinyobj_parse_mtl_file(&mats, &count, fileName);
if (result != TINYOBJ_SUCCESS) TRACELOG(LOG_WARNING, "MATERIAL: [%s] Failed to parse materials file", fileName);
// TODO: Process materials to return
tinyobj_materials_free(mats, count);
}
#else
TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to load material file", fileName);
#endif
// Set materials shader to default (DIFFUSE, SPECULAR, NORMAL)
if (materials != NULL)
{
for (unsigned int i = 0; i < count; i++) materials[i].shader = rlGetShaderDefault();
}
*materialCount = count;
return materials;
}
// Load default material (Supports: DIFFUSE, SPECULAR, NORMAL maps)
Material LoadMaterialDefault(void)
{
Material material = { 0 };
material.maps = (MaterialMap *)RL_CALLOC(MAX_MATERIAL_MAPS, sizeof(MaterialMap));
material.shader = rlGetShaderDefault();
material.maps[MATERIAL_MAP_DIFFUSE].texture = rlGetTextureDefault(); // White texture (1x1 pixel)
//material.maps[MATERIAL_MAP_NORMAL].texture; // NOTE: By default, not set
//material.maps[MATERIAL_MAP_SPECULAR].texture; // NOTE: By default, not set
material.maps[MATERIAL_MAP_DIFFUSE].color = WHITE; // Diffuse color
material.maps[MATERIAL_MAP_SPECULAR].color = WHITE; // Specular color
return material;
}
// Unload material from memory
void UnloadMaterial(Material material)
{
// Unload material shader (avoid unloading default shader, managed by raylib)
if (material.shader.id != rlGetShaderDefault().id) UnloadShader(material.shader);
// Unload loaded texture maps (avoid unloading default texture, managed by raylib)
for (int i = 0; i < MAX_MATERIAL_MAPS; i++)
{
if (material.maps[i].texture.id != rlGetTextureDefault().id) rlUnloadTexture(material.maps[i].texture.id);
}
RL_FREE(material.maps);
}
// Set texture for a material map type (MATERIAL_MAP_DIFFUSE, MATERIAL_MAP_SPECULAR...)
// NOTE: Previous texture should be manually unloaded
void SetMaterialTexture(Material *material, int mapType, Texture2D texture)
{
material->maps[mapType].texture = texture;
}
// Set the material for a mesh
void SetModelMeshMaterial(Model *model, int meshId, int materialId)
{
if (meshId >= model->meshCount) TRACELOG(LOG_WARNING, "MESH: Id greater than mesh count");
else if (materialId >= model->materialCount) TRACELOG(LOG_WARNING, "MATERIAL: Id greater than material count");
else model->meshMaterial[meshId] = materialId;
}
// Load model animations from file
ModelAnimation *LoadModelAnimations(const char *fileName, int *animCount)
{
ModelAnimation *animations = NULL;
#if defined(SUPPORT_FILEFORMAT_IQM)
if (IsFileExtension(fileName, ".iqm")) animations = LoadIQMModelAnimations(fileName, animCount);
#endif
#if defined(SUPPORT_FILEFORMAT_GLTF)
if (IsFileExtension(fileName, ".gltf;.glb")) animations = LoadGLTFModelAnimations(fileName, animCount);
#endif
return animations;
}
// Update model animated vertex data (positions and normals) for a given frame
// NOTE: Updated data is uploaded to GPU
void UpdateModelAnimation(Model model, ModelAnimation anim, int frame)
{
if ((anim.frameCount > 0) && (anim.bones != NULL) && (anim.framePoses != NULL))
{
if (frame >= anim.frameCount) frame = frame%anim.frameCount;
for (int m = 0; m < model.meshCount; m++)
{
Vector3 animVertex = { 0 };
Vector3 animNormal = { 0 };
Vector3 inTranslation = { 0 };
Quaternion inRotation = { 0 };
//Vector3 inScale = { 0 }; // Not used...
Vector3 outTranslation = { 0 };
Quaternion outRotation = { 0 };
Vector3 outScale = { 0 };
int vCounter = 0;
int boneCounter = 0;
int boneId = 0;
float boneWeight = 0.0;
for (int i = 0; i < model.meshes[m].vertexCount; i++)
{
model.meshes[m].animVertices[vCounter] = 0;
model.meshes[m].animVertices[vCounter + 1] = 0;
model.meshes[m].animVertices[vCounter + 2] = 0;
model.meshes[m].animNormals[vCounter] = 0;
model.meshes[m].animNormals[vCounter + 1] = 0;
model.meshes[m].animNormals[vCounter + 2] = 0;
for (int j = 0; j < 4; j++)
{
boneId = model.meshes[m].boneIds[boneCounter];
boneWeight = model.meshes[m].boneWeights[boneCounter];
inTranslation = model.bindPose[boneId].translation;
inRotation = model.bindPose[boneId].rotation;
//inScale = model.bindPose[boneId].scale;
outTranslation = anim.framePoses[frame][boneId].translation;
outRotation = anim.framePoses[frame][boneId].rotation;
outScale = anim.framePoses[frame][boneId].scale;
// Vertices processing
// NOTE: We use meshes.vertices (default vertex position) to calculate meshes.animVertices (animated vertex position)
animVertex = (Vector3){ model.meshes[m].vertices[vCounter], model.meshes[m].vertices[vCounter + 1], model.meshes[m].vertices[vCounter + 2] };
animVertex = Vector3Multiply(animVertex, outScale);
animVertex = Vector3Subtract(animVertex, inTranslation);
animVertex = Vector3RotateByQuaternion(animVertex, QuaternionMultiply(outRotation, QuaternionInvert(inRotation)));
animVertex = Vector3Add(animVertex, outTranslation);
model.meshes[m].animVertices[vCounter] += animVertex.x*boneWeight;
model.meshes[m].animVertices[vCounter + 1] += animVertex.y*boneWeight;
model.meshes[m].animVertices[vCounter + 2] += animVertex.z*boneWeight;
// Normals processing
// NOTE: We use meshes.baseNormals (default normal) to calculate meshes.normals (animated normals)
if (model.meshes[m].normals != NULL)
{
animNormal = (Vector3){ model.meshes[m].normals[vCounter], model.meshes[m].normals[vCounter + 1], model.meshes[m].normals[vCounter + 2] };
animNormal = Vector3RotateByQuaternion(animNormal, QuaternionMultiply(outRotation, QuaternionInvert(inRotation)));
model.meshes[m].animNormals[vCounter] += animNormal.x*boneWeight;
model.meshes[m].animNormals[vCounter + 1] += animNormal.y*boneWeight;
model.meshes[m].animNormals[vCounter + 2] += animNormal.z*boneWeight;
}
boneCounter += 1;
}
vCounter += 3;
}
// Upload new vertex data to GPU for model drawing
rlUpdateVertexBuffer(model.meshes[m].vboId[0], model.meshes[m].animVertices, model.meshes[m].vertexCount*3*sizeof(float), 0); // Update vertex position
rlUpdateVertexBuffer(model.meshes[m].vboId[2], model.meshes[m].animNormals, model.meshes[m].vertexCount*3*sizeof(float), 0); // Update vertex normals
}
}
}
// Unload animation array data
void UnloadModelAnimations(ModelAnimation* animations, unsigned int count)
{
for (unsigned int i = 0; i < count; i++) UnloadModelAnimation(animations[i]);
RL_FREE(animations);
}
// Unload animation data
void UnloadModelAnimation(ModelAnimation anim)
{
for (int i = 0; i < anim.frameCount; i++) RL_FREE(anim.framePoses[i]);
RL_FREE(anim.bones);
RL_FREE(anim.framePoses);
}
// Check model animation skeleton match
// NOTE: Only number of bones and parent connections are checked
bool IsModelAnimationValid(Model model, ModelAnimation anim)
{
int result = true;
if (model.boneCount != anim.boneCount) result = false;
else
{
for (int i = 0; i < model.boneCount; i++)
{
if (model.bones[i].parent != anim.bones[i].parent) { result = false; break; }
}
}
return result;
}
#if defined(SUPPORT_MESH_GENERATION)
// Generate polygonal mesh
Mesh GenMeshPoly(int sides, float radius)
{
Mesh mesh = { 0 };
if (sides < 3) return mesh;
int vertexCount = sides*3;
// Vertices definition
Vector3 *vertices = (Vector3 *)RL_MALLOC(vertexCount*sizeof(Vector3));
float d = 0.0f, dStep = 360.0f/sides;
for (int v = 0; v < vertexCount; v += 3)
{
vertices[v] = (Vector3){ 0.0f, 0.0f, 0.0f };
vertices[v + 1] = (Vector3){ sinf(DEG2RAD*d)*radius, 0.0f, cosf(DEG2RAD*d)*radius };
vertices[v + 2] = (Vector3){sinf(DEG2RAD*(d+dStep))*radius, 0.0f, cosf(DEG2RAD*(d+dStep))*radius };
d += dStep;
}
// Normals definition
Vector3 *normals = (Vector3 *)RL_MALLOC(vertexCount*sizeof(Vector3));
for (int n = 0; n < vertexCount; n++) normals[n] = (Vector3){ 0.0f, 1.0f, 0.0f }; // Vector3.up;
// TexCoords definition
Vector2 *texcoords = (Vector2 *)RL_MALLOC(vertexCount*sizeof(Vector2));
for (int n = 0; n < vertexCount; n++) texcoords[n] = (Vector2){ 0.0f, 0.0f };
mesh.vertexCount = vertexCount;
mesh.triangleCount = sides;
mesh.vertices = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float));
mesh.texcoords = (float *)RL_MALLOC(mesh.vertexCount*2*sizeof(float));
mesh.normals = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float));
// Mesh vertices position array
for (int i = 0; i < mesh.vertexCount; i++)
{
mesh.vertices[3*i] = vertices[i].x;
mesh.vertices[3*i + 1] = vertices[i].y;
mesh.vertices[3*i + 2] = vertices[i].z;
}
// Mesh texcoords array
for (int i = 0; i < mesh.vertexCount; i++)
{
mesh.texcoords[2*i] = texcoords[i].x;
mesh.texcoords[2*i + 1] = texcoords[i].y;
}
// Mesh normals array
for (int i = 0; i < mesh.vertexCount; i++)
{
mesh.normals[3*i] = normals[i].x;
mesh.normals[3*i + 1] = normals[i].y;
mesh.normals[3*i + 2] = normals[i].z;
}
RL_FREE(vertices);
RL_FREE(normals);
RL_FREE(texcoords);
// Upload vertex data to GPU (static mesh)
// NOTE: mesh.vboId array is allocated inside UploadMesh()
UploadMesh(&mesh, false);
return mesh;
}
// Generate plane mesh (with subdivisions)
Mesh GenMeshPlane(float width, float length, int resX, int resZ)
{
Mesh mesh = { 0 };
#define CUSTOM_MESH_GEN_PLANE
#if defined(CUSTOM_MESH_GEN_PLANE)
resX++;
resZ++;
// Vertices definition
int vertexCount = resX*resZ; // vertices get reused for the faces
Vector3 *vertices = (Vector3 *)RL_MALLOC(vertexCount*sizeof(Vector3));
for (int z = 0; z < resZ; z++)
{
// [-length/2, length/2]
float zPos = ((float)z/(resZ - 1) - 0.5f)*length;
for (int x = 0; x < resX; x++)
{
// [-width/2, width/2]
float xPos = ((float)x/(resX - 1) - 0.5f)*width;
vertices[x + z*resX] = (Vector3){ xPos, 0.0f, zPos };
}
}
// Normals definition
Vector3 *normals = (Vector3 *)RL_MALLOC(vertexCount*sizeof(Vector3));
for (int n = 0; n < vertexCount; n++) normals[n] = (Vector3){ 0.0f, 1.0f, 0.0f }; // Vector3.up;
// TexCoords definition
Vector2 *texcoords = (Vector2 *)RL_MALLOC(vertexCount*sizeof(Vector2));
for (int v = 0; v < resZ; v++)
{
for (int u = 0; u < resX; u++)
{
texcoords[u + v*resX] = (Vector2){ (float)u/(resX - 1), (float)v/(resZ - 1) };
}
}
// Triangles definition (indices)
int numFaces = (resX - 1)*(resZ - 1);
int *triangles = (int *)RL_MALLOC(numFaces*6*sizeof(int));
int t = 0;
for (int face = 0; face < numFaces; face++)
{
// Retrieve lower left corner from face ind
int i = face % (resX - 1) + (face/(resZ - 1)*resX);
triangles[t++] = i + resX;
triangles[t++] = i + 1;
triangles[t++] = i;
triangles[t++] = i + resX;
triangles[t++] = i + resX + 1;
triangles[t++] = i + 1;
}
mesh.vertexCount = vertexCount;
mesh.triangleCount = numFaces*2;
mesh.vertices = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float));
mesh.texcoords = (float *)RL_MALLOC(mesh.vertexCount*2*sizeof(float));
mesh.normals = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float));
mesh.indices = (unsigned short *)RL_MALLOC(mesh.triangleCount*3*sizeof(unsigned short));
// Mesh vertices position array
for (int i = 0; i < mesh.vertexCount; i++)
{
mesh.vertices[3*i] = vertices[i].x;
mesh.vertices[3*i + 1] = vertices[i].y;
mesh.vertices[3*i + 2] = vertices[i].z;
}
// Mesh texcoords array
for (int i = 0; i < mesh.vertexCount; i++)
{
mesh.texcoords[2*i] = texcoords[i].x;
mesh.texcoords[2*i + 1] = texcoords[i].y;
}
// Mesh normals array
for (int i = 0; i < mesh.vertexCount; i++)
{
mesh.normals[3*i] = normals[i].x;
mesh.normals[3*i + 1] = normals[i].y;
mesh.normals[3*i + 2] = normals[i].z;
}
// Mesh indices array initialization
for (int i = 0; i < mesh.triangleCount*3; i++) mesh.indices[i] = triangles[i];
RL_FREE(vertices);
RL_FREE(normals);
RL_FREE(texcoords);
RL_FREE(triangles);
#else // Use par_shapes library to generate plane mesh
par_shapes_mesh *plane = par_shapes_create_plane(resX, resZ); // No normals/texcoords generated!!!
par_shapes_scale(plane, width, length, 1.0f);
par_shapes_rotate(plane, -PI/2.0f, (float[]){ 1, 0, 0 });
par_shapes_translate(plane, -width/2, 0.0f, length/2);
mesh.vertices = (float *)RL_MALLOC(plane->ntriangles*3*3*sizeof(float));
mesh.texcoords = (float *)RL_MALLOC(plane->ntriangles*3*2*sizeof(float));
mesh.normals = (float *)RL_MALLOC(plane->ntriangles*3*3*sizeof(float));
mesh.vertexCount = plane->ntriangles*3;
mesh.triangleCount = plane->ntriangles;
for (int k = 0; k < mesh.vertexCount; k++)
{
mesh.vertices[k*3] = plane->points[plane->triangles[k]*3];
mesh.vertices[k*3 + 1] = plane->points[plane->triangles[k]*3 + 1];
mesh.vertices[k*3 + 2] = plane->points[plane->triangles[k]*3 + 2];
mesh.normals[k*3] = plane->normals[plane->triangles[k]*3];
mesh.normals[k*3 + 1] = plane->normals[plane->triangles[k]*3 + 1];
mesh.normals[k*3 + 2] = plane->normals[plane->triangles[k]*3 + 2];
mesh.texcoords[k*2] = plane->tcoords[plane->triangles[k]*2];
mesh.texcoords[k*2 + 1] = plane->tcoords[plane->triangles[k]*2 + 1];
}
par_shapes_free_mesh(plane);
#endif
// Upload vertex data to GPU (static mesh)
UploadMesh(&mesh, false);
return mesh;
}
// Generated cuboid mesh
Mesh GenMeshCube(float width, float height, float length)
{
Mesh mesh = { 0 };
#define CUSTOM_MESH_GEN_CUBE
#if defined(CUSTOM_MESH_GEN_CUBE)
float vertices[] = {
-width/2, -height/2, length/2,
width/2, -height/2, length/2,
width/2, height/2, length/2,
-width/2, height/2, length/2,
-width/2, -height/2, -length/2,
-width/2, height/2, -length/2,
width/2, height/2, -length/2,
width/2, -height/2, -length/2,
-width/2, height/2, -length/2,
-width/2, height/2, length/2,
width/2, height/2, length/2,
width/2, height/2, -length/2,
-width/2, -height/2, -length/2,
width/2, -height/2, -length/2,
width/2, -height/2, length/2,
-width/2, -height/2, length/2,
width/2, -height/2, -length/2,
width/2, height/2, -length/2,
width/2, height/2, length/2,
width/2, -height/2, length/2,
-width/2, -height/2, -length/2,
-width/2, -height/2, length/2,
-width/2, height/2, length/2,
-width/2, height/2, -length/2
};
float texcoords[] = {
0.0f, 0.0f,
1.0f, 0.0f,
1.0f, 1.0f,
0.0f, 1.0f,
1.0f, 0.0f,
1.0f, 1.0f,
0.0f, 1.0f,
0.0f, 0.0f,
0.0f, 1.0f,
0.0f, 0.0f,
1.0f, 0.0f,
1.0f, 1.0f,
1.0f, 1.0f,
0.0f, 1.0f,
0.0f, 0.0f,
1.0f, 0.0f,
1.0f, 0.0f,
1.0f, 1.0f,
0.0f, 1.0f,
0.0f, 0.0f,
0.0f, 0.0f,
1.0f, 0.0f,
1.0f, 1.0f,
0.0f, 1.0f
};
float normals[] = {
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, 1.0f,
0.0f, 0.0f,-1.0f,
0.0f, 0.0f,-1.0f,
0.0f, 0.0f,-1.0f,
0.0f, 0.0f,-1.0f,
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f,-1.0f, 0.0f,
0.0f,-1.0f, 0.0f,
0.0f,-1.0f, 0.0f,
0.0f,-1.0f, 0.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
-1.0f, 0.0f, 0.0f,
-1.0f, 0.0f, 0.0f,
-1.0f, 0.0f, 0.0f,
-1.0f, 0.0f, 0.0f
};
mesh.vertices = (float *)RL_MALLOC(24*3*sizeof(float));
memcpy(mesh.vertices, vertices, 24*3*sizeof(float));
mesh.texcoords = (float *)RL_MALLOC(24*2*sizeof(float));
memcpy(mesh.texcoords, texcoords, 24*2*sizeof(float));
mesh.normals = (float *)RL_MALLOC(24*3*sizeof(float));
memcpy(mesh.normals, normals, 24*3*sizeof(float));
mesh.indices = (unsigned short *)RL_MALLOC(36*sizeof(unsigned short));
int k = 0;
// Indices can be initialized right now
for (int i = 0; i < 36; i+=6)
{
mesh.indices[i] = 4*k;
mesh.indices[i+1] = 4*k+1;
mesh.indices[i+2] = 4*k+2;
mesh.indices[i+3] = 4*k;
mesh.indices[i+4] = 4*k+2;
mesh.indices[i+5] = 4*k+3;
k++;
}
mesh.vertexCount = 24;
mesh.triangleCount = 12;
#else // Use par_shapes library to generate cube mesh
/*
// Platonic solids:
par_shapes_mesh* par_shapes_create_tetrahedron(); // 4 sides polyhedron (pyramid)
par_shapes_mesh* par_shapes_create_cube(); // 6 sides polyhedron (cube)
par_shapes_mesh* par_shapes_create_octahedron(); // 8 sides polyhedron (dyamond)
par_shapes_mesh* par_shapes_create_dodecahedron(); // 12 sides polyhedron
par_shapes_mesh* par_shapes_create_icosahedron(); // 20 sides polyhedron
*/
// Platonic solid generation: cube (6 sides)
// NOTE: No normals/texcoords generated by default
par_shapes_mesh *cube = par_shapes_create_cube();
cube->tcoords = PAR_MALLOC(float, 2*cube->npoints);
for (int i = 0; i < 2*cube->npoints; i++) cube->tcoords[i] = 0.0f;
par_shapes_scale(cube, width, height, length);
par_shapes_translate(cube, -width/2, 0.0f, -length/2);
par_shapes_compute_normals(cube);
mesh.vertices = (float *)RL_MALLOC(cube->ntriangles*3*3*sizeof(float));
mesh.texcoords = (float *)RL_MALLOC(cube->ntriangles*3*2*sizeof(float));
mesh.normals = (float *)RL_MALLOC(cube->ntriangles*3*3*sizeof(float));
mesh.vertexCount = cube->ntriangles*3;
mesh.triangleCount = cube->ntriangles;
for (int k = 0; k < mesh.vertexCount; k++)
{
mesh.vertices[k*3] = cube->points[cube->triangles[k]*3];
mesh.vertices[k*3 + 1] = cube->points[cube->triangles[k]*3 + 1];
mesh.vertices[k*3 + 2] = cube->points[cube->triangles[k]*3 + 2];
mesh.normals[k*3] = cube->normals[cube->triangles[k]*3];
mesh.normals[k*3 + 1] = cube->normals[cube->triangles[k]*3 + 1];
mesh.normals[k*3 + 2] = cube->normals[cube->triangles[k]*3 + 2];
mesh.texcoords[k*2] = cube->tcoords[cube->triangles[k]*2];
mesh.texcoords[k*2 + 1] = cube->tcoords[cube->triangles[k]*2 + 1];
}
par_shapes_free_mesh(cube);
#endif
// Upload vertex data to GPU (static mesh)
UploadMesh(&mesh, false);
return mesh;
}
// Generate sphere mesh (standard sphere)
Mesh GenMeshSphere(float radius, int rings, int slices)
{
Mesh mesh = { 0 };
if ((rings >= 3) && (slices >= 3))
{
par_shapes_mesh *sphere = par_shapes_create_parametric_sphere(slices, rings);
par_shapes_scale(sphere, radius, radius, radius);
// NOTE: Soft normals are computed internally
mesh.vertices = (float *)RL_MALLOC(sphere->ntriangles*3*3*sizeof(float));
mesh.texcoords = (float *)RL_MALLOC(sphere->ntriangles*3*2*sizeof(float));
mesh.normals = (float *)RL_MALLOC(sphere->ntriangles*3*3*sizeof(float));
mesh.vertexCount = sphere->ntriangles*3;
mesh.triangleCount = sphere->ntriangles;
for (int k = 0; k < mesh.vertexCount; k++)
{
mesh.vertices[k*3] = sphere->points[sphere->triangles[k]*3];
mesh.vertices[k*3 + 1] = sphere->points[sphere->triangles[k]*3 + 1];
mesh.vertices[k*3 + 2] = sphere->points[sphere->triangles[k]*3 + 2];
mesh.normals[k*3] = sphere->normals[sphere->triangles[k]*3];
mesh.normals[k*3 + 1] = sphere->normals[sphere->triangles[k]*3 + 1];
mesh.normals[k*3 + 2] = sphere->normals[sphere->triangles[k]*3 + 2];
mesh.texcoords[k*2] = sphere->tcoords[sphere->triangles[k]*2];
mesh.texcoords[k*2 + 1] = sphere->tcoords[sphere->triangles[k]*2 + 1];
}
par_shapes_free_mesh(sphere);
// Upload vertex data to GPU (static mesh)
UploadMesh(&mesh, false);
}
else TRACELOG(LOG_WARNING, "MESH: Failed to generate mesh: sphere");
return mesh;
}
// Generate hemi-sphere mesh (half sphere, no bottom cap)
Mesh GenMeshHemiSphere(float radius, int rings, int slices)
{
Mesh mesh = { 0 };
if ((rings >= 3) && (slices >= 3))
{
if (radius < 0.0f) radius = 0.0f;
par_shapes_mesh *sphere = par_shapes_create_hemisphere(slices, rings);
par_shapes_scale(sphere, radius, radius, radius);
// NOTE: Soft normals are computed internally
mesh.vertices = (float *)RL_MALLOC(sphere->ntriangles*3*3*sizeof(float));
mesh.texcoords = (float *)RL_MALLOC(sphere->ntriangles*3*2*sizeof(float));
mesh.normals = (float *)RL_MALLOC(sphere->ntriangles*3*3*sizeof(float));
mesh.vertexCount = sphere->ntriangles*3;
mesh.triangleCount = sphere->ntriangles;
for (int k = 0; k < mesh.vertexCount; k++)
{
mesh.vertices[k*3] = sphere->points[sphere->triangles[k]*3];
mesh.vertices[k*3 + 1] = sphere->points[sphere->triangles[k]*3 + 1];
mesh.vertices[k*3 + 2] = sphere->points[sphere->triangles[k]*3 + 2];
mesh.normals[k*3] = sphere->normals[sphere->triangles[k]*3];
mesh.normals[k*3 + 1] = sphere->normals[sphere->triangles[k]*3 + 1];
mesh.normals[k*3 + 2] = sphere->normals[sphere->triangles[k]*3 + 2];
mesh.texcoords[k*2] = sphere->tcoords[sphere->triangles[k]*2];
mesh.texcoords[k*2 + 1] = sphere->tcoords[sphere->triangles[k]*2 + 1];
}
par_shapes_free_mesh(sphere);
// Upload vertex data to GPU (static mesh)
UploadMesh(&mesh, false);
}
else TRACELOG(LOG_WARNING, "MESH: Failed to generate mesh: hemisphere");
return mesh;
}
// Generate cylinder mesh
Mesh GenMeshCylinder(float radius, float height, int slices)
{
Mesh mesh = { 0 };
if (slices >= 3)
{
// Instance a cylinder that sits on the Z=0 plane using the given tessellation
// levels across the UV domain. Think of "slices" like a number of pizza
// slices, and "stacks" like a number of stacked rings.
// Height and radius are both 1.0, but they can easily be changed with par_shapes_scale
par_shapes_mesh *cylinder = par_shapes_create_cylinder(slices, 8);
par_shapes_scale(cylinder, radius, radius, height);
par_shapes_rotate(cylinder, -PI/2.0f, (float[]){ 1, 0, 0 });
par_shapes_rotate(cylinder, PI/2.0f, (float[]){ 0, 1, 0 });
// Generate an orientable disk shape (top cap)
par_shapes_mesh *capTop = par_shapes_create_disk(radius, slices, (float[]){ 0, 0, 0 }, (float[]){ 0, 0, 1 });
capTop->tcoords = PAR_MALLOC(float, 2*capTop->npoints);
for (int i = 0; i < 2*capTop->npoints; i++) capTop->tcoords[i] = 0.0f;
par_shapes_rotate(capTop, -PI/2.0f, (float[]){ 1, 0, 0 });
par_shapes_translate(capTop, 0, height, 0);
// Generate an orientable disk shape (bottom cap)
par_shapes_mesh *capBottom = par_shapes_create_disk(radius, slices, (float[]){ 0, 0, 0 }, (float[]){ 0, 0, -1 });
capBottom->tcoords = PAR_MALLOC(float, 2*capBottom->npoints);
for (int i = 0; i < 2*capBottom->npoints; i++) capBottom->tcoords[i] = 0.95f;
par_shapes_rotate(capBottom, PI/2.0f, (float[]){ 1, 0, 0 });
par_shapes_merge_and_free(cylinder, capTop);
par_shapes_merge_and_free(cylinder, capBottom);
mesh.vertices = (float *)RL_MALLOC(cylinder->ntriangles*3*3*sizeof(float));
mesh.texcoords = (float *)RL_MALLOC(cylinder->ntriangles*3*2*sizeof(float));
mesh.normals = (float *)RL_MALLOC(cylinder->ntriangles*3*3*sizeof(float));
mesh.vertexCount = cylinder->ntriangles*3;
mesh.triangleCount = cylinder->ntriangles;
for (int k = 0; k < mesh.vertexCount; k++)
{
mesh.vertices[k*3] = cylinder->points[cylinder->triangles[k]*3];
mesh.vertices[k*3 + 1] = cylinder->points[cylinder->triangles[k]*3 + 1];
mesh.vertices[k*3 + 2] = cylinder->points[cylinder->triangles[k]*3 + 2];
mesh.normals[k*3] = cylinder->normals[cylinder->triangles[k]*3];
mesh.normals[k*3 + 1] = cylinder->normals[cylinder->triangles[k]*3 + 1];
mesh.normals[k*3 + 2] = cylinder->normals[cylinder->triangles[k]*3 + 2];
mesh.texcoords[k*2] = cylinder->tcoords[cylinder->triangles[k]*2];
mesh.texcoords[k*2 + 1] = cylinder->tcoords[cylinder->triangles[k]*2 + 1];
}
par_shapes_free_mesh(cylinder);
// Upload vertex data to GPU (static mesh)
UploadMesh(&mesh, false);
}
else TRACELOG(LOG_WARNING, "MESH: Failed to generate mesh: cylinder");
return mesh;
}
// Generate torus mesh
Mesh GenMeshTorus(float radius, float size, int radSeg, int sides)
{
Mesh mesh = { 0 };
if ((sides >= 3) && (radSeg >= 3))
{
if (radius > 1.0f) radius = 1.0f;
else if (radius < 0.1f) radius = 0.1f;
// Create a donut that sits on the Z=0 plane with the specified inner radius
// The outer radius can be controlled with par_shapes_scale
par_shapes_mesh *torus = par_shapes_create_torus(radSeg, sides, radius);
par_shapes_scale(torus, size/2, size/2, size/2);
mesh.vertices = (float *)RL_MALLOC(torus->ntriangles*3*3*sizeof(float));
mesh.texcoords = (float *)RL_MALLOC(torus->ntriangles*3*2*sizeof(float));
mesh.normals = (float *)RL_MALLOC(torus->ntriangles*3*3*sizeof(float));
mesh.vertexCount = torus->ntriangles*3;
mesh.triangleCount = torus->ntriangles;
for (int k = 0; k < mesh.vertexCount; k++)
{
mesh.vertices[k*3] = torus->points[torus->triangles[k]*3];
mesh.vertices[k*3 + 1] = torus->points[torus->triangles[k]*3 + 1];
mesh.vertices[k*3 + 2] = torus->points[torus->triangles[k]*3 + 2];
mesh.normals[k*3] = torus->normals[torus->triangles[k]*3];
mesh.normals[k*3 + 1] = torus->normals[torus->triangles[k]*3 + 1];
mesh.normals[k*3 + 2] = torus->normals[torus->triangles[k]*3 + 2];
mesh.texcoords[k*2] = torus->tcoords[torus->triangles[k]*2];
mesh.texcoords[k*2 + 1] = torus->tcoords[torus->triangles[k]*2 + 1];
}
par_shapes_free_mesh(torus);
// Upload vertex data to GPU (static mesh)
UploadMesh(&mesh, false);
}
else TRACELOG(LOG_WARNING, "MESH: Failed to generate mesh: torus");
return mesh;
}
// Generate trefoil knot mesh
Mesh GenMeshKnot(float radius, float size, int radSeg, int sides)
{
Mesh mesh = { 0 };
if ((sides >= 3) && (radSeg >= 3))
{
if (radius > 3.0f) radius = 3.0f;
else if (radius < 0.5f) radius = 0.5f;
par_shapes_mesh *knot = par_shapes_create_trefoil_knot(radSeg, sides, radius);
par_shapes_scale(knot, size, size, size);
mesh.vertices = (float *)RL_MALLOC(knot->ntriangles*3*3*sizeof(float));
mesh.texcoords = (float *)RL_MALLOC(knot->ntriangles*3*2*sizeof(float));
mesh.normals = (float *)RL_MALLOC(knot->ntriangles*3*3*sizeof(float));
mesh.vertexCount = knot->ntriangles*3;
mesh.triangleCount = knot->ntriangles;
for (int k = 0; k < mesh.vertexCount; k++)
{
mesh.vertices[k*3] = knot->points[knot->triangles[k]*3];
mesh.vertices[k*3 + 1] = knot->points[knot->triangles[k]*3 + 1];
mesh.vertices[k*3 + 2] = knot->points[knot->triangles[k]*3 + 2];
mesh.normals[k*3] = knot->normals[knot->triangles[k]*3];
mesh.normals[k*3 + 1] = knot->normals[knot->triangles[k]*3 + 1];
mesh.normals[k*3 + 2] = knot->normals[knot->triangles[k]*3 + 2];
mesh.texcoords[k*2] = knot->tcoords[knot->triangles[k]*2];
mesh.texcoords[k*2 + 1] = knot->tcoords[knot->triangles[k]*2 + 1];
}
par_shapes_free_mesh(knot);
// Upload vertex data to GPU (static mesh)
UploadMesh(&mesh, false);
}
else TRACELOG(LOG_WARNING, "MESH: Failed to generate mesh: knot");
return mesh;
}
// Generate a mesh from heightmap
// NOTE: Vertex data is uploaded to GPU
Mesh GenMeshHeightmap(Image heightmap, Vector3 size)
{
#define GRAY_VALUE(c) ((c.r+c.g+c.b)/3)
Mesh mesh = { 0 };
int mapX = heightmap.width;
int mapZ = heightmap.height;
Color *pixels = LoadImageColors(heightmap);
// NOTE: One vertex per pixel
mesh.triangleCount = (mapX-1)*(mapZ-1)*2; // One quad every four pixels
mesh.vertexCount = mesh.triangleCount*3;
mesh.vertices = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float));
mesh.normals = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float));
mesh.texcoords = (float *)RL_MALLOC(mesh.vertexCount*2*sizeof(float));
mesh.colors = NULL;
int vCounter = 0; // Used to count vertices float by float
int tcCounter = 0; // Used to count texcoords float by float
int nCounter = 0; // Used to count normals float by float
int trisCounter = 0;
Vector3 scaleFactor = { size.x/mapX, size.y/255.0f, size.z/mapZ };
Vector3 vA = { 0 };
Vector3 vB = { 0 };
Vector3 vC = { 0 };
Vector3 vN = { 0 };
for (int z = 0; z < mapZ-1; z++)
{
for (int x = 0; x < mapX-1; x++)
{
// Fill vertices array with data
//----------------------------------------------------------
// one triangle - 3 vertex
mesh.vertices[vCounter] = (float)x*scaleFactor.x;
mesh.vertices[vCounter + 1] = (float)GRAY_VALUE(pixels[x + z*mapX])*scaleFactor.y;
mesh.vertices[vCounter + 2] = (float)z*scaleFactor.z;
mesh.vertices[vCounter + 3] = (float)x*scaleFactor.x;
mesh.vertices[vCounter + 4] = (float)GRAY_VALUE(pixels[x + (z + 1)*mapX])*scaleFactor.y;
mesh.vertices[vCounter + 5] = (float)(z + 1)*scaleFactor.z;
mesh.vertices[vCounter + 6] = (float)(x + 1)*scaleFactor.x;
mesh.vertices[vCounter + 7] = (float)GRAY_VALUE(pixels[(x + 1) + z*mapX])*scaleFactor.y;
mesh.vertices[vCounter + 8] = (float)z*scaleFactor.z;
// another triangle - 3 vertex
mesh.vertices[vCounter + 9] = mesh.vertices[vCounter + 6];
mesh.vertices[vCounter + 10] = mesh.vertices[vCounter + 7];
mesh.vertices[vCounter + 11] = mesh.vertices[vCounter + 8];
mesh.vertices[vCounter + 12] = mesh.vertices[vCounter + 3];
mesh.vertices[vCounter + 13] = mesh.vertices[vCounter + 4];
mesh.vertices[vCounter + 14] = mesh.vertices[vCounter + 5];
mesh.vertices[vCounter + 15] = (float)(x + 1)*scaleFactor.x;
mesh.vertices[vCounter + 16] = (float)GRAY_VALUE(pixels[(x + 1) + (z + 1)*mapX])*scaleFactor.y;
mesh.vertices[vCounter + 17] = (float)(z + 1)*scaleFactor.z;
vCounter += 18; // 6 vertex, 18 floats
// Fill texcoords array with data
//--------------------------------------------------------------
mesh.texcoords[tcCounter] = (float)x/(mapX - 1);
mesh.texcoords[tcCounter + 1] = (float)z/(mapZ - 1);
mesh.texcoords[tcCounter + 2] = (float)x/(mapX - 1);
mesh.texcoords[tcCounter + 3] = (float)(z + 1)/(mapZ - 1);
mesh.texcoords[tcCounter + 4] = (float)(x + 1)/(mapX - 1);
mesh.texcoords[tcCounter + 5] = (float)z/(mapZ - 1);
mesh.texcoords[tcCounter + 6] = mesh.texcoords[tcCounter + 4];
mesh.texcoords[tcCounter + 7] = mesh.texcoords[tcCounter + 5];
mesh.texcoords[tcCounter + 8] = mesh.texcoords[tcCounter + 2];
mesh.texcoords[tcCounter + 9] = mesh.texcoords[tcCounter + 3];
mesh.texcoords[tcCounter + 10] = (float)(x + 1)/(mapX - 1);
mesh.texcoords[tcCounter + 11] = (float)(z + 1)/(mapZ - 1);
tcCounter += 12; // 6 texcoords, 12 floats
// Fill normals array with data
//--------------------------------------------------------------
for (int i = 0; i < 18; i += 9)
{
vA.x = mesh.vertices[nCounter + i];
vA.y = mesh.vertices[nCounter + i + 1];
vA.z = mesh.vertices[nCounter + i + 2];
vB.x = mesh.vertices[nCounter + i + 3];
vB.y = mesh.vertices[nCounter + i + 4];
vB.z = mesh.vertices[nCounter + i + 5];
vC.x = mesh.vertices[nCounter + i + 6];
vC.y = mesh.vertices[nCounter + i + 7];
vC.z = mesh.vertices[nCounter + i + 8];
vN = Vector3Normalize(Vector3CrossProduct(Vector3Subtract(vB, vA), Vector3Subtract(vC, vA)));
mesh.normals[nCounter + i] = vN.x;
mesh.normals[nCounter + i + 1] = vN.y;
mesh.normals[nCounter + i + 2] = vN.z;
mesh.normals[nCounter + i + 3] = vN.x;
mesh.normals[nCounter + i + 4] = vN.y;
mesh.normals[nCounter + i + 5] = vN.z;
mesh.normals[nCounter + i + 6] = vN.x;
mesh.normals[nCounter + i + 7] = vN.y;
mesh.normals[nCounter + i + 8] = vN.z;
}
nCounter += 18; // 6 vertex, 18 floats
trisCounter += 2;
}
}
UnloadImageColors(pixels); // Unload pixels color data
// Upload vertex data to GPU (static mesh)
UploadMesh(&mesh, false);
return mesh;
}
// Generate a cubes mesh from pixel data
// NOTE: Vertex data is uploaded to GPU
Mesh GenMeshCubicmap(Image cubicmap, Vector3 cubeSize)
{
#define COLOR_EQUAL(col1, col2) ((col1.r == col2.r)&&(col1.g == col2.g)&&(col1.b == col2.b)&&(col1.a == col2.a))
Mesh mesh = { 0 };
Color *pixels = LoadImageColors(cubicmap);
int mapWidth = cubicmap.width;
int mapHeight = cubicmap.height;
// NOTE: Max possible number of triangles numCubes*(12 triangles by cube)
int maxTriangles = cubicmap.width*cubicmap.height*12;
int vCounter = 0; // Used to count vertices
int tcCounter = 0; // Used to count texcoords
int nCounter = 0; // Used to count normals
float w = cubeSize.x;
float h = cubeSize.z;
float h2 = cubeSize.y;
Vector3 *mapVertices = (Vector3 *)RL_MALLOC(maxTriangles*3*sizeof(Vector3));
Vector2 *mapTexcoords = (Vector2 *)RL_MALLOC(maxTriangles*3*sizeof(Vector2));
Vector3 *mapNormals = (Vector3 *)RL_MALLOC(maxTriangles*3*sizeof(Vector3));
// Define the 6 normals of the cube, we will combine them accordingly later...
Vector3 n1 = { 1.0f, 0.0f, 0.0f };
Vector3 n2 = { -1.0f, 0.0f, 0.0f };
Vector3 n3 = { 0.0f, 1.0f, 0.0f };
Vector3 n4 = { 0.0f, -1.0f, 0.0f };
Vector3 n5 = { 0.0f, 0.0f, -1.0f };
Vector3 n6 = { 0.0f, 0.0f, 1.0f };
// NOTE: We use texture rectangles to define different textures for top-bottom-front-back-right-left (6)
typedef struct RectangleF {
float x;
float y;
float width;
float height;
} RectangleF;
RectangleF rightTexUV = { 0.0f, 0.0f, 0.5f, 0.5f };
RectangleF leftTexUV = { 0.5f, 0.0f, 0.5f, 0.5f };
RectangleF frontTexUV = { 0.0f, 0.0f, 0.5f, 0.5f };
RectangleF backTexUV = { 0.5f, 0.0f, 0.5f, 0.5f };
RectangleF topTexUV = { 0.0f, 0.5f, 0.5f, 0.5f };
RectangleF bottomTexUV = { 0.5f, 0.5f, 0.5f, 0.5f };
for (int z = 0; z < mapHeight; ++z)
{
for (int x = 0; x < mapWidth; ++x)
{
// Define the 8 vertex of the cube, we will combine them accordingly later...
Vector3 v1 = { w*(x - 0.5f), h2, h*(z - 0.5f) };
Vector3 v2 = { w*(x - 0.5f), h2, h*(z + 0.5f) };
Vector3 v3 = { w*(x + 0.5f), h2, h*(z + 0.5f) };
Vector3 v4 = { w*(x + 0.5f), h2, h*(z - 0.5f) };
Vector3 v5 = { w*(x + 0.5f), 0, h*(z - 0.5f) };
Vector3 v6 = { w*(x - 0.5f), 0, h*(z - 0.5f) };
Vector3 v7 = { w*(x - 0.5f), 0, h*(z + 0.5f) };
Vector3 v8 = { w*(x + 0.5f), 0, h*(z + 0.5f) };
// We check pixel color to be WHITE -> draw full cube
if (COLOR_EQUAL(pixels[z*cubicmap.width + x], WHITE))
{
// Define triangles and checking collateral cubes
//------------------------------------------------
// Define top triangles (2 tris, 6 vertex --> v1-v2-v3, v1-v3-v4)
// WARNING: Not required for a WHITE cubes, created to allow seeing the map from outside
mapVertices[vCounter] = v1;
mapVertices[vCounter + 1] = v2;
mapVertices[vCounter + 2] = v3;
mapVertices[vCounter + 3] = v1;
mapVertices[vCounter + 4] = v3;
mapVertices[vCounter + 5] = v4;
vCounter += 6;
mapNormals[nCounter] = n3;
mapNormals[nCounter + 1] = n3;
mapNormals[nCounter + 2] = n3;
mapNormals[nCounter + 3] = n3;
mapNormals[nCounter + 4] = n3;
mapNormals[nCounter + 5] = n3;
nCounter += 6;
mapTexcoords[tcCounter] = (Vector2){ topTexUV.x, topTexUV.y };
mapTexcoords[tcCounter + 1] = (Vector2){ topTexUV.x, topTexUV.y + topTexUV.height };
mapTexcoords[tcCounter + 2] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y + topTexUV.height };
mapTexcoords[tcCounter + 3] = (Vector2){ topTexUV.x, topTexUV.y };
mapTexcoords[tcCounter + 4] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y + topTexUV.height };
mapTexcoords[tcCounter + 5] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y };
tcCounter += 6;
// Define bottom triangles (2 tris, 6 vertex --> v6-v8-v7, v6-v5-v8)
mapVertices[vCounter] = v6;
mapVertices[vCounter + 1] = v8;
mapVertices[vCounter + 2] = v7;
mapVertices[vCounter + 3] = v6;
mapVertices[vCounter + 4] = v5;
mapVertices[vCounter + 5] = v8;
vCounter += 6;
mapNormals[nCounter] = n4;
mapNormals[nCounter + 1] = n4;
mapNormals[nCounter + 2] = n4;
mapNormals[nCounter + 3] = n4;
mapNormals[nCounter + 4] = n4;
mapNormals[nCounter + 5] = n4;
nCounter += 6;
mapTexcoords[tcCounter] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y };
mapTexcoords[tcCounter + 1] = (Vector2){ bottomTexUV.x, bottomTexUV.y + bottomTexUV.height };
mapTexcoords[tcCounter + 2] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y + bottomTexUV.height };
mapTexcoords[tcCounter + 3] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y };
mapTexcoords[tcCounter + 4] = (Vector2){ bottomTexUV.x, bottomTexUV.y };
mapTexcoords[tcCounter + 5] = (Vector2){ bottomTexUV.x, bottomTexUV.y + bottomTexUV.height };
tcCounter += 6;
// Checking cube on bottom of current cube
if (((z < cubicmap.height - 1) && COLOR_EQUAL(pixels[(z + 1)*cubicmap.width + x], BLACK)) || (z == cubicmap.height - 1))
{
// Define front triangles (2 tris, 6 vertex) --> v2 v7 v3, v3 v7 v8
// NOTE: Collateral occluded faces are not generated
mapVertices[vCounter] = v2;
mapVertices[vCounter + 1] = v7;
mapVertices[vCounter + 2] = v3;
mapVertices[vCounter + 3] = v3;
mapVertices[vCounter + 4] = v7;
mapVertices[vCounter + 5] = v8;
vCounter += 6;
mapNormals[nCounter] = n6;
mapNormals[nCounter + 1] = n6;
mapNormals[nCounter + 2] = n6;
mapNormals[nCounter + 3] = n6;
mapNormals[nCounter + 4] = n6;
mapNormals[nCounter + 5] = n6;
nCounter += 6;
mapTexcoords[tcCounter] = (Vector2){ frontTexUV.x, frontTexUV.y };
mapTexcoords[tcCounter + 1] = (Vector2){ frontTexUV.x, frontTexUV.y + frontTexUV.height };
mapTexcoords[tcCounter + 2] = (Vector2){ frontTexUV.x + frontTexUV.width, frontTexUV.y };
mapTexcoords[tcCounter + 3] = (Vector2){ frontTexUV.x + frontTexUV.width, frontTexUV.y };
mapTexcoords[tcCounter + 4] = (Vector2){ frontTexUV.x, frontTexUV.y + frontTexUV.height };
mapTexcoords[tcCounter + 5] = (Vector2){ frontTexUV.x + frontTexUV.width, frontTexUV.y + frontTexUV.height };
tcCounter += 6;
}
// Checking cube on top of current cube
if (((z > 0) && COLOR_EQUAL(pixels[(z - 1)*cubicmap.width + x], BLACK)) || (z == 0))
{
// Define back triangles (2 tris, 6 vertex) --> v1 v5 v6, v1 v4 v5
// NOTE: Collateral occluded faces are not generated
mapVertices[vCounter] = v1;
mapVertices[vCounter + 1] = v5;
mapVertices[vCounter + 2] = v6;
mapVertices[vCounter + 3] = v1;
mapVertices[vCounter + 4] = v4;
mapVertices[vCounter + 5] = v5;
vCounter += 6;
mapNormals[nCounter] = n5;
mapNormals[nCounter + 1] = n5;
mapNormals[nCounter + 2] = n5;
mapNormals[nCounter + 3] = n5;
mapNormals[nCounter + 4] = n5;
mapNormals[nCounter + 5] = n5;
nCounter += 6;
mapTexcoords[tcCounter] = (Vector2){ backTexUV.x + backTexUV.width, backTexUV.y };
mapTexcoords[tcCounter + 1] = (Vector2){ backTexUV.x, backTexUV.y + backTexUV.height };
mapTexcoords[tcCounter + 2] = (Vector2){ backTexUV.x + backTexUV.width, backTexUV.y + backTexUV.height };
mapTexcoords[tcCounter + 3] = (Vector2){ backTexUV.x + backTexUV.width, backTexUV.y };
mapTexcoords[tcCounter + 4] = (Vector2){ backTexUV.x, backTexUV.y };
mapTexcoords[tcCounter + 5] = (Vector2){ backTexUV.x, backTexUV.y + backTexUV.height };
tcCounter += 6;
}
// Checking cube on right of current cube
if (((x < cubicmap.width - 1) && COLOR_EQUAL(pixels[z*cubicmap.width + (x + 1)], BLACK)) || (x == cubicmap.width - 1))
{
// Define right triangles (2 tris, 6 vertex) --> v3 v8 v4, v4 v8 v5
// NOTE: Collateral occluded faces are not generated
mapVertices[vCounter] = v3;
mapVertices[vCounter + 1] = v8;
mapVertices[vCounter + 2] = v4;
mapVertices[vCounter + 3] = v4;
mapVertices[vCounter + 4] = v8;
mapVertices[vCounter + 5] = v5;
vCounter += 6;
mapNormals[nCounter] = n1;
mapNormals[nCounter + 1] = n1;
mapNormals[nCounter + 2] = n1;
mapNormals[nCounter + 3] = n1;
mapNormals[nCounter + 4] = n1;
mapNormals[nCounter + 5] = n1;
nCounter += 6;
mapTexcoords[tcCounter] = (Vector2){ rightTexUV.x, rightTexUV.y };
mapTexcoords[tcCounter + 1] = (Vector2){ rightTexUV.x, rightTexUV.y + rightTexUV.height };
mapTexcoords[tcCounter + 2] = (Vector2){ rightTexUV.x + rightTexUV.width, rightTexUV.y };
mapTexcoords[tcCounter + 3] = (Vector2){ rightTexUV.x + rightTexUV.width, rightTexUV.y };
mapTexcoords[tcCounter + 4] = (Vector2){ rightTexUV.x, rightTexUV.y + rightTexUV.height };
mapTexcoords[tcCounter + 5] = (Vector2){ rightTexUV.x + rightTexUV.width, rightTexUV.y + rightTexUV.height };
tcCounter += 6;
}
// Checking cube on left of current cube
if (((x > 0) && COLOR_EQUAL(pixels[z*cubicmap.width + (x - 1)], BLACK)) || (x == 0))
{
// Define left triangles (2 tris, 6 vertex) --> v1 v7 v2, v1 v6 v7
// NOTE: Collateral occluded faces are not generated
mapVertices[vCounter] = v1;
mapVertices[vCounter + 1] = v7;
mapVertices[vCounter + 2] = v2;
mapVertices[vCounter + 3] = v1;
mapVertices[vCounter + 4] = v6;
mapVertices[vCounter + 5] = v7;
vCounter += 6;
mapNormals[nCounter] = n2;
mapNormals[nCounter + 1] = n2;
mapNormals[nCounter + 2] = n2;
mapNormals[nCounter + 3] = n2;
mapNormals[nCounter + 4] = n2;
mapNormals[nCounter + 5] = n2;
nCounter += 6;
mapTexcoords[tcCounter] = (Vector2){ leftTexUV.x, leftTexUV.y };
mapTexcoords[tcCounter + 1] = (Vector2){ leftTexUV.x + leftTexUV.width, leftTexUV.y + leftTexUV.height };
mapTexcoords[tcCounter + 2] = (Vector2){ leftTexUV.x + leftTexUV.width, leftTexUV.y };
mapTexcoords[tcCounter + 3] = (Vector2){ leftTexUV.x, leftTexUV.y };
mapTexcoords[tcCounter + 4] = (Vector2){ leftTexUV.x, leftTexUV.y + leftTexUV.height };
mapTexcoords[tcCounter + 5] = (Vector2){ leftTexUV.x + leftTexUV.width, leftTexUV.y + leftTexUV.height };
tcCounter += 6;
}
}
// We check pixel color to be BLACK, we will only draw floor and roof
else if (COLOR_EQUAL(pixels[z*cubicmap.width + x], BLACK))
{
// Define top triangles (2 tris, 6 vertex --> v1-v2-v3, v1-v3-v4)
mapVertices[vCounter] = v1;
mapVertices[vCounter + 1] = v3;
mapVertices[vCounter + 2] = v2;
mapVertices[vCounter + 3] = v1;
mapVertices[vCounter + 4] = v4;
mapVertices[vCounter + 5] = v3;
vCounter += 6;
mapNormals[nCounter] = n4;
mapNormals[nCounter + 1] = n4;
mapNormals[nCounter + 2] = n4;
mapNormals[nCounter + 3] = n4;
mapNormals[nCounter + 4] = n4;
mapNormals[nCounter + 5] = n4;
nCounter += 6;
mapTexcoords[tcCounter] = (Vector2){ topTexUV.x, topTexUV.y };
mapTexcoords[tcCounter + 1] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y + topTexUV.height };
mapTexcoords[tcCounter + 2] = (Vector2){ topTexUV.x, topTexUV.y + topTexUV.height };
mapTexcoords[tcCounter + 3] = (Vector2){ topTexUV.x, topTexUV.y };
mapTexcoords[tcCounter + 4] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y };
mapTexcoords[tcCounter + 5] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y + topTexUV.height };
tcCounter += 6;
// Define bottom triangles (2 tris, 6 vertex --> v6-v8-v7, v6-v5-v8)
mapVertices[vCounter] = v6;
mapVertices[vCounter + 1] = v7;
mapVertices[vCounter + 2] = v8;
mapVertices[vCounter + 3] = v6;
mapVertices[vCounter + 4] = v8;
mapVertices[vCounter + 5] = v5;
vCounter += 6;
mapNormals[nCounter] = n3;
mapNormals[nCounter + 1] = n3;
mapNormals[nCounter + 2] = n3;
mapNormals[nCounter + 3] = n3;
mapNormals[nCounter + 4] = n3;
mapNormals[nCounter + 5] = n3;
nCounter += 6;
mapTexcoords[tcCounter] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y };
mapTexcoords[tcCounter + 1] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y + bottomTexUV.height };
mapTexcoords[tcCounter + 2] = (Vector2){ bottomTexUV.x, bottomTexUV.y + bottomTexUV.height };
mapTexcoords[tcCounter + 3] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y };
mapTexcoords[tcCounter + 4] = (Vector2){ bottomTexUV.x, bottomTexUV.y + bottomTexUV.height };
mapTexcoords[tcCounter + 5] = (Vector2){ bottomTexUV.x, bottomTexUV.y };
tcCounter += 6;
}
}
}
// Move data from mapVertices temp arays to vertices float array
mesh.vertexCount = vCounter;
mesh.triangleCount = vCounter/3;
mesh.vertices = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float));
mesh.normals = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float));
mesh.texcoords = (float *)RL_MALLOC(mesh.vertexCount*2*sizeof(float));
mesh.colors = NULL;
int fCounter = 0;
// Move vertices data
for (int i = 0; i < vCounter; i++)
{
mesh.vertices[fCounter] = mapVertices[i].x;
mesh.vertices[fCounter + 1] = mapVertices[i].y;
mesh.vertices[fCounter + 2] = mapVertices[i].z;
fCounter += 3;
}
fCounter = 0;
// Move normals data
for (int i = 0; i < nCounter; i++)
{
mesh.normals[fCounter] = mapNormals[i].x;
mesh.normals[fCounter + 1] = mapNormals[i].y;
mesh.normals[fCounter + 2] = mapNormals[i].z;
fCounter += 3;
}
fCounter = 0;
// Move texcoords data
for (int i = 0; i < tcCounter; i++)
{
mesh.texcoords[fCounter] = mapTexcoords[i].x;
mesh.texcoords[fCounter + 1] = mapTexcoords[i].y;
fCounter += 2;
}
RL_FREE(mapVertices);
RL_FREE(mapNormals);
RL_FREE(mapTexcoords);
UnloadImageColors(pixels); // Unload pixels color data
// Upload vertex data to GPU (static mesh)
UploadMesh(&mesh, false);
return mesh;
}
#endif // SUPPORT_MESH_GENERATION
// Compute mesh bounding box limits
// NOTE: minVertex and maxVertex should be transformed by model transform matrix
BoundingBox GetMeshBoundingBox(Mesh mesh)
{
// Get min and max vertex to construct bounds (AABB)
Vector3 minVertex = { 0 };
Vector3 maxVertex = { 0 };
if (mesh.vertices != NULL)
{
minVertex = (Vector3){ mesh.vertices[0], mesh.vertices[1], mesh.vertices[2] };
maxVertex = (Vector3){ mesh.vertices[0], mesh.vertices[1], mesh.vertices[2] };
for (int i = 1; i < mesh.vertexCount; i++)
{
minVertex = Vector3Min(minVertex, (Vector3){ mesh.vertices[i*3], mesh.vertices[i*3 + 1], mesh.vertices[i*3 + 2] });
maxVertex = Vector3Max(maxVertex, (Vector3){ mesh.vertices[i*3], mesh.vertices[i*3 + 1], mesh.vertices[i*3 + 2] });
}
}
// Create the bounding box
BoundingBox box = { 0 };
box.min = minVertex;
box.max = maxVertex;
return box;
}
// Compute mesh tangents
// NOTE: To calculate mesh tangents and binormals we need mesh vertex positions and texture coordinates
// Implementation base don: https://answers.unity.com/questions/7789/calculating-tangents-vector4.html
void GenMeshTangents(Mesh *mesh)
{
if (mesh->tangents == NULL) mesh->tangents = (float *)RL_MALLOC(mesh->vertexCount*4*sizeof(float));
else TRACELOG(LOG_WARNING, "MESH: Tangents data already available, re-writting");
Vector3 *tan1 = (Vector3 *)RL_MALLOC(mesh->vertexCount*sizeof(Vector3));
Vector3 *tan2 = (Vector3 *)RL_MALLOC(mesh->vertexCount*sizeof(Vector3));
for (int i = 0; i < mesh->vertexCount; i += 3)
{
// Get triangle vertices
Vector3 v1 = { mesh->vertices[(i + 0)*3 + 0], mesh->vertices[(i + 0)*3 + 1], mesh->vertices[(i + 0)*3 + 2] };
Vector3 v2 = { mesh->vertices[(i + 1)*3 + 0], mesh->vertices[(i + 1)*3 + 1], mesh->vertices[(i + 1)*3 + 2] };
Vector3 v3 = { mesh->vertices[(i + 2)*3 + 0], mesh->vertices[(i + 2)*3 + 1], mesh->vertices[(i + 2)*3 + 2] };
// Get triangle texcoords
Vector2 uv1 = { mesh->texcoords[(i + 0)*2 + 0], mesh->texcoords[(i + 0)*2 + 1] };
Vector2 uv2 = { mesh->texcoords[(i + 1)*2 + 0], mesh->texcoords[(i + 1)*2 + 1] };
Vector2 uv3 = { mesh->texcoords[(i + 2)*2 + 0], mesh->texcoords[(i + 2)*2 + 1] };
float x1 = v2.x - v1.x;
float y1 = v2.y - v1.y;
float z1 = v2.z - v1.z;
float x2 = v3.x - v1.x;
float y2 = v3.y - v1.y;
float z2 = v3.z - v1.z;
float s1 = uv2.x - uv1.x;
float t1 = uv2.y - uv1.y;
float s2 = uv3.x - uv1.x;
float t2 = uv3.y - uv1.y;
float div = s1*t2 - s2*t1;
float r = (div == 0.0f)? 0.0f : 1.0f/div;
Vector3 sdir = { (t2*x1 - t1*x2)*r, (t2*y1 - t1*y2)*r, (t2*z1 - t1*z2)*r };
Vector3 tdir = { (s1*x2 - s2*x1)*r, (s1*y2 - s2*y1)*r, (s1*z2 - s2*z1)*r };
tan1[i + 0] = sdir;
tan1[i + 1] = sdir;
tan1[i + 2] = sdir;
tan2[i + 0] = tdir;
tan2[i + 1] = tdir;
tan2[i + 2] = tdir;
}
// Compute tangents considering normals
for (int i = 0; i < mesh->vertexCount; ++i)
{
Vector3 normal = { mesh->normals[i*3 + 0], mesh->normals[i*3 + 1], mesh->normals[i*3 + 2] };
Vector3 tangent = tan1[i];
// TODO: Review, not sure if tangent computation is right, just used reference proposed maths...
#if defined(COMPUTE_TANGENTS_METHOD_01)
Vector3 tmp = Vector3Subtract(tangent, Vector3Scale(normal, Vector3DotProduct(normal, tangent)));
tmp = Vector3Normalize(tmp);
mesh->tangents[i*4 + 0] = tmp.x;
mesh->tangents[i*4 + 1] = tmp.y;
mesh->tangents[i*4 + 2] = tmp.z;
mesh->tangents[i*4 + 3] = 1.0f;
#else
Vector3OrthoNormalize(&normal, &tangent);
mesh->tangents[i*4 + 0] = tangent.x;
mesh->tangents[i*4 + 1] = tangent.y;
mesh->tangents[i*4 + 2] = tangent.z;
mesh->tangents[i*4 + 3] = (Vector3DotProduct(Vector3CrossProduct(normal, tangent), tan2[i]) < 0.0f)? -1.0f : 1.0f;
#endif
}
RL_FREE(tan1);
RL_FREE(tan2);
// Load a new tangent attributes buffer
mesh->vboId[SHADER_LOC_VERTEX_TANGENT] = rlLoadVertexBuffer(mesh->tangents, mesh->vertexCount*4*sizeof(float), false);
TRACELOG(LOG_INFO, "MESH: Tangents data computed for provided mesh");
}
// Compute mesh binormals (aka bitangent)
void GenMeshBinormals(Mesh *mesh)
{
for (int i = 0; i < mesh->vertexCount; i++)
{
//Vector3 normal = { mesh->normals[i*3 + 0], mesh->normals[i*3 + 1], mesh->normals[i*3 + 2] };
//Vector3 tangent = { mesh->tangents[i*4 + 0], mesh->tangents[i*4 + 1], mesh->tangents[i*4 + 2] };
//Vector3 binormal = Vector3Scale(Vector3CrossProduct(normal, tangent), mesh->tangents[i*4 + 3]);
// TODO: Register computed binormal in mesh->binormal?
}
}
// Draw a model (with texture if set)
void DrawModel(Model model, Vector3 position, float scale, Color tint)
{
Vector3 vScale = { scale, scale, scale };
Vector3 rotationAxis = { 0.0f, 1.0f, 0.0f };
DrawModelEx(model, position, rotationAxis, 0.0f, vScale, tint);
}
// Draw a model with extended parameters
void DrawModelEx(Model model, Vector3 position, Vector3 rotationAxis, float rotationAngle, Vector3 scale, Color tint)
{
// Calculate transformation matrix from function parameters
// Get transform matrix (rotation -> scale -> translation)
Matrix matScale = MatrixScale(scale.x, scale.y, scale.z);
Matrix matRotation = MatrixRotate(rotationAxis, rotationAngle*DEG2RAD);
Matrix matTranslation = MatrixTranslate(position.x, position.y, position.z);
Matrix matTransform = MatrixMultiply(MatrixMultiply(matScale, matRotation), matTranslation);
// Combine model transformation matrix (model.transform) with matrix generated by function parameters (matTransform)
model.transform = MatrixMultiply(model.transform, matTransform);
for (int i = 0; i < model.meshCount; i++)
{
Color color = model.materials[model.meshMaterial[i]].maps[MATERIAL_MAP_DIFFUSE].color;
Color colorTint = WHITE;
colorTint.r = (unsigned char)((((float)color.r/255.0)*((float)tint.r/255.0))*255.0f);
colorTint.g = (unsigned char)((((float)color.g/255.0)*((float)tint.g/255.0))*255.0f);
colorTint.b = (unsigned char)((((float)color.b/255.0)*((float)tint.b/255.0))*255.0f);
colorTint.a = (unsigned char)((((float)color.a/255.0)*((float)tint.a/255.0))*255.0f);
model.materials[model.meshMaterial[i]].maps[MATERIAL_MAP_DIFFUSE].color = colorTint;
DrawMesh(model.meshes[i], model.materials[model.meshMaterial[i]], model.transform);
model.materials[model.meshMaterial[i]].maps[MATERIAL_MAP_DIFFUSE].color = color;
}
}
// Draw a model wires (with texture if set)
void DrawModelWires(Model model, Vector3 position, float scale, Color tint)
{
rlEnableWireMode();
DrawModel(model, position, scale, tint);
rlDisableWireMode();
}
// Draw a model wires (with texture if set) with extended parameters
void DrawModelWiresEx(Model model, Vector3 position, Vector3 rotationAxis, float rotationAngle, Vector3 scale, Color tint)
{
rlEnableWireMode();
DrawModelEx(model, position, rotationAxis, rotationAngle, scale, tint);
rlDisableWireMode();
}
// Draw a billboard
void DrawBillboard(Camera camera, Texture2D texture, Vector3 position, float size, Color tint)
{
Rectangle source = { 0.0f, 0.0f, (float)texture.width, (float)texture.height };
DrawBillboardRec(camera, texture, source, position, (Vector2){ size, size }, tint);
}
// Draw a billboard (part of a texture defined by a rectangle)
void DrawBillboardRec(Camera camera, Texture2D texture, Rectangle source, Vector3 position, Vector2 size, Color tint)
{
DrawBillboardPro(camera, texture, source, position, size, Vector2Zero(), 0.0f, tint);
}
void DrawBillboardPro(Camera camera, Texture2D texture, Rectangle source, Vector3 position, Vector2 size, Vector2 origin, float rotation, Color tint)
{
// NOTE: Billboard size will maintain source rectangle aspect ratio, size will represent billboard width
Vector2 sizeRatio = { size.y, size.x*(float)source.height/source.width };
Matrix matView = MatrixLookAt(camera.position, camera.target, camera.up);
Vector3 right = { matView.m0, matView.m4, matView.m8 };
//Vector3 up = { matView.m1, matView.m5, matView.m9 };
// NOTE: Billboard locked on axis-Y
Vector3 up = { 0.0f, 1.0f, 0.0f };
Vector3 rightScaled = Vector3Scale(right, sizeRatio.x/2);
Vector3 upScaled = Vector3Scale(up, sizeRatio.y/2);
Vector3 p1 = Vector3Add(rightScaled, upScaled);
Vector3 p2 = Vector3Subtract(rightScaled, upScaled);
Vector3 topLeft = Vector3Scale(p2, -1);
Vector3 topRight = p1;
Vector3 bottomRight = p2;
Vector3 bottomLeft = Vector3Scale(p1, -1);
if (rotation != 0.0f)
{
float sinRotation = sinf(rotation*DEG2RAD);
float cosRotation = cosf(rotation*DEG2RAD);
// NOTE: (-1, 1) is the range where origin.x, origin.y is inside the texture
float rotateAboutX = sizeRatio.x*origin.x/2;
float rotateAboutY = sizeRatio.y*origin.y/2;
float xtvalue, ytvalue;
float rotatedX, rotatedY;
xtvalue = Vector3DotProduct(right, topLeft) - rotateAboutX; // Project points to x and y coordinates on the billboard plane
ytvalue = Vector3DotProduct(up, topLeft) - rotateAboutY;
rotatedX = xtvalue*cosRotation - ytvalue*sinRotation + rotateAboutX; // Rotate about the point origin
rotatedY = xtvalue*sinRotation + ytvalue*cosRotation + rotateAboutY;
topLeft = Vector3Add(Vector3Scale(up, rotatedY), Vector3Scale(right, rotatedX)); // Translate back to cartesian coordinates
xtvalue = Vector3DotProduct(right, topRight) - rotateAboutX;
ytvalue = Vector3DotProduct(up, topRight) - rotateAboutY;
rotatedX = xtvalue*cosRotation - ytvalue*sinRotation + rotateAboutX;
rotatedY = xtvalue*sinRotation + ytvalue*cosRotation + rotateAboutY;
topRight = Vector3Add(Vector3Scale(up, rotatedY), Vector3Scale(right, rotatedX));
xtvalue = Vector3DotProduct(right, bottomRight) - rotateAboutX;
ytvalue = Vector3DotProduct(up, bottomRight) - rotateAboutY;
rotatedX = xtvalue*cosRotation - ytvalue*sinRotation + rotateAboutX;
rotatedY = xtvalue*sinRotation + ytvalue*cosRotation + rotateAboutY;
bottomRight = Vector3Add(Vector3Scale(up, rotatedY), Vector3Scale(right, rotatedX));
xtvalue = Vector3DotProduct(right, bottomLeft)-rotateAboutX;
ytvalue = Vector3DotProduct(up, bottomLeft)-rotateAboutY;
rotatedX = xtvalue*cosRotation - ytvalue*sinRotation + rotateAboutX;
rotatedY = xtvalue*sinRotation + ytvalue*cosRotation + rotateAboutY;
bottomLeft = Vector3Add(Vector3Scale(up, rotatedY), Vector3Scale(right, rotatedX));
}
// Translate points to the draw center (position)
topLeft = Vector3Add(topLeft, position);
topRight = Vector3Add(topRight, position);
bottomRight = Vector3Add(bottomRight, position);
bottomLeft = Vector3Add(bottomLeft, position);
rlCheckRenderBatchLimit(4);
rlSetTexture(texture.id);
rlBegin(RL_QUADS);
rlColor4ub(tint.r, tint.g, tint.b, tint.a);
// Bottom-left corner for texture and quad
rlTexCoord2f((float)source.x/texture.width, (float)source.y/texture.height);
rlVertex3f(topLeft.x, topLeft.y, topLeft.z);
// Top-left corner for texture and quad
rlTexCoord2f((float)source.x/texture.width, (float)(source.y + source.height)/texture.height);
rlVertex3f(bottomLeft.x, bottomLeft.y, bottomLeft.z);
// Top-right corner for texture and quad
rlTexCoord2f((float)(source.x + source.width)/texture.width, (float)(source.y + source.height)/texture.height);
rlVertex3f(bottomRight.x, bottomRight.y, bottomRight.z);
// Bottom-right corner for texture and quad
rlTexCoord2f((float)(source.x + source.width)/texture.width, (float)source.y/texture.height);
rlVertex3f(topRight.x, topRight.y, topRight.z);
rlEnd();
rlSetTexture(0);
}
// Draw a bounding box with wires
void DrawBoundingBox(BoundingBox box, Color color)
{
Vector3 size = { 0 };
size.x = fabsf(box.max.x - box.min.x);
size.y = fabsf(box.max.y - box.min.y);
size.z = fabsf(box.max.z - box.min.z);
Vector3 center = { box.min.x + size.x/2.0f, box.min.y + size.y/2.0f, box.min.z + size.z/2.0f };
DrawCubeWires(center, size.x, size.y, size.z, color);
}
// Check collision between two spheres
bool CheckCollisionSpheres(Vector3 center1, float radius1, Vector3 center2, float radius2)
{
bool collision = false;
// Simple way to check for collision, just checking distance between two points
// Unfortunately, sqrtf() is a costly operation, so we avoid it with following solution
/*
float dx = center1.x - center2.x; // X distance between centers
float dy = center1.y - center2.y; // Y distance between centers
float dz = center1.z - center2.z; // Z distance between centers
float distance = sqrtf(dx*dx + dy*dy + dz*dz); // Distance between centers
if (distance <= (radius1 + radius2)) collision = true;
*/
// Check for distances squared to avoid sqrtf()
if (Vector3DotProduct(Vector3Subtract(center2, center1), Vector3Subtract(center2, center1)) <= (radius1 + radius2)*(radius1 + radius2)) collision = true;
return collision;
}
// Check collision between two boxes
// NOTE: Boxes are defined by two points minimum and maximum
bool CheckCollisionBoxes(BoundingBox box1, BoundingBox box2)
{
bool collision = true;
if ((box1.max.x >= box2.min.x) && (box1.min.x <= box2.max.x))
{
if ((box1.max.y < box2.min.y) || (box1.min.y > box2.max.y)) collision = false;
if ((box1.max.z < box2.min.z) || (box1.min.z > box2.max.z)) collision = false;
}
else collision = false;
return collision;
}
// Check collision between box and sphere
bool CheckCollisionBoxSphere(BoundingBox box, Vector3 center, float radius)
{
bool collision = false;
float dmin = 0;
if (center.x < box.min.x) dmin += powf(center.x - box.min.x, 2);
else if (center.x > box.max.x) dmin += powf(center.x - box.max.x, 2);
if (center.y < box.min.y) dmin += powf(center.y - box.min.y, 2);
else if (center.y > box.max.y) dmin += powf(center.y - box.max.y, 2);
if (center.z < box.min.z) dmin += powf(center.z - box.min.z, 2);
else if (center.z > box.max.z) dmin += powf(center.z - box.max.z, 2);
if (dmin <= (radius*radius)) collision = true;
return collision;
}
// Get collision info between ray and sphere
RayCollision GetRayCollisionSphere(Ray ray, Vector3 center, float radius)
{
RayCollision collision = { 0 };
Vector3 raySpherePos = Vector3Subtract(center, ray.position);
float vector = Vector3DotProduct(raySpherePos, ray.direction);
float distance = Vector3Length(raySpherePos);
float d = radius*radius - (distance*distance - vector*vector);
collision.hit = d >= 0.0f;
// Check if ray origin is inside the sphere to calculate the correct collision point
if (distance < radius)
{
collision.distance = vector + sqrtf(d);
// Calculate collision point
collision.point = Vector3Add(ray.position, Vector3Scale(ray.direction, collision.distance));
// Calculate collision normal (pointing outwards)
collision.normal = Vector3Negate(Vector3Normalize(Vector3Subtract(collision.point, center)));
}
else
{
collision.distance = vector - sqrtf(d);
// Calculate collision point
collision.point = Vector3Add(ray.position, Vector3Scale(ray.direction, collision.distance));
// Calculate collision normal (pointing inwards)
collision.normal = Vector3Normalize(Vector3Subtract(collision.point, center));
}
return collision;
}
// Get collision info between ray and box
RayCollision GetRayCollisionBox(Ray ray, BoundingBox box)
{
RayCollision collision = { 0 };
// Note: If ray.position is inside the box, the distance is negative (as if the ray was reversed)
// Reversing ray.direction will give use the correct result.
bool insideBox = (ray.position.x > box.min.x) && (ray.position.x < box.max.x) &&
(ray.position.y > box.min.y) && (ray.position.y < box.max.y) &&
(ray.position.z > box.min.z) && (ray.position.z < box.max.z);
if (insideBox) ray.direction = Vector3Negate(ray.direction);
float t[11] = { 0 };
t[8] = 1.0f/ray.direction.x;
t[9] = 1.0f/ray.direction.y;
t[10] = 1.0f/ray.direction.z;
t[0] = (box.min.x - ray.position.x)*t[8];
t[1] = (box.max.x - ray.position.x)*t[8];
t[2] = (box.min.y - ray.position.y)*t[9];
t[3] = (box.max.y - ray.position.y)*t[9];
t[4] = (box.min.z - ray.position.z)*t[10];
t[5] = (box.max.z - ray.position.z)*t[10];
t[6] = (float)fmax(fmax(fmin(t[0], t[1]), fmin(t[2], t[3])), fmin(t[4], t[5]));
t[7] = (float)fmin(fmin(fmax(t[0], t[1]), fmax(t[2], t[3])), fmax(t[4], t[5]));
collision.hit = !((t[7] < 0) || (t[6] > t[7]));
collision.distance = t[6];
collision.point = Vector3Add(ray.position, Vector3Scale(ray.direction, collision.distance));
// Get box center point
collision.normal = Vector3Lerp(box.min, box.max, 0.5f);
// Get vector center point->hit point
collision.normal = Vector3Subtract(collision.point, collision.normal);
// Scale vector to unit cube
// NOTE: We use an additional .01 to fix numerical errors
collision.normal = Vector3Scale(collision.normal, 2.01f);
collision.normal = Vector3Divide(collision.normal, Vector3Subtract(box.max, box.min));
// The relevant elemets of the vector are now slightly larger than 1.0f (or smaller than -1.0f)
// and the others are somewhere between -1.0 and 1.0
// casting to int is exactly our wanted normal!
collision.normal.x = (int)collision.normal.x;
collision.normal.y = (int)collision.normal.y;
collision.normal.z = (int)collision.normal.z;
collision.normal = Vector3Normalize(collision.normal);
if (insideBox)
{
// Reset ray.direction
ray.direction = Vector3Negate(ray.direction);
// Fix result
collision.distance *= -1.0f;
collision.normal = Vector3Negate(collision.normal);
}
return collision;
}
// Get collision info between ray and mesh
RayCollision GetRayCollisionMesh(Ray ray, Mesh mesh, Matrix transform)
{
RayCollision collision = { 0 };
// Check if mesh vertex data on CPU for testing
if (mesh.vertices != NULL)
{
int triangleCount = mesh.triangleCount;
// Test against all triangles in mesh
for (int i = 0; i < triangleCount; i++)
{
Vector3 a, b, c;
Vector3* vertdata = (Vector3*)mesh.vertices;
if (mesh.indices)
{
a = vertdata[mesh.indices[i*3 + 0]];
b = vertdata[mesh.indices[i*3 + 1]];
c = vertdata[mesh.indices[i*3 + 2]];
}
else
{
a = vertdata[i*3 + 0];
b = vertdata[i*3 + 1];
c = vertdata[i*3 + 2];
}
a = Vector3Transform(a, transform);
b = Vector3Transform(b, transform);
c = Vector3Transform(c, transform);
RayCollision triHitInfo = GetRayCollisionTriangle(ray, a, b, c);
if (triHitInfo.hit)
{
// Save the closest hit triangle
if ((!collision.hit) || (collision.distance > triHitInfo.distance)) collision = triHitInfo;
}
}
}
return collision;
}
// Get collision info between ray and model
RayCollision GetRayCollisionModel(Ray ray, Model model)
{
RayCollision collision = { 0 };
for (int m = 0; m < model.meshCount; m++)
{
RayCollision meshHitInfo = GetRayCollisionMesh(ray, model.meshes[m], model.transform);
if (meshHitInfo.hit)
{
// Save the closest hit mesh
if ((!collision.hit) || (collision.distance > meshHitInfo.distance)) collision = meshHitInfo;
}
}
return collision;
}
// Get collision info between ray and triangle
// NOTE: The points are expected to be in counter-clockwise winding
// NOTE: Based on https://en.wikipedia.org/wiki/M%C3%B6ller%E2%80%93Trumbore_intersection_algorithm
RayCollision GetRayCollisionTriangle(Ray ray, Vector3 p1, Vector3 p2, Vector3 p3)
{
#define EPSILON 0.000001 // A small number
RayCollision collision = { 0 };
Vector3 edge1 = { 0 };
Vector3 edge2 = { 0 };
Vector3 p, q, tv;
float det, invDet, u, v, t;
// Find vectors for two edges sharing V1
edge1 = Vector3Subtract(p2, p1);
edge2 = Vector3Subtract(p3, p1);
// Begin calculating determinant - also used to calculate u parameter
p = Vector3CrossProduct(ray.direction, edge2);
// If determinant is near zero, ray lies in plane of triangle or ray is parallel to plane of triangle
det = Vector3DotProduct(edge1, p);
// Avoid culling!
if ((det > -EPSILON) && (det < EPSILON)) return collision;
invDet = 1.0f/det;
// Calculate distance from V1 to ray origin
tv = Vector3Subtract(ray.position, p1);
// Calculate u parameter and test bound
u = Vector3DotProduct(tv, p)*invDet;
// The intersection lies outside of the triangle
if ((u < 0.0f) || (u > 1.0f)) return collision;
// Prepare to test v parameter
q = Vector3CrossProduct(tv, edge1);
// Calculate V parameter and test bound
v = Vector3DotProduct(ray.direction, q)*invDet;
// The intersection lies outside of the triangle
if ((v < 0.0f) || ((u + v) > 1.0f)) return collision;
t = Vector3DotProduct(edge2, q)*invDet;
if (t > EPSILON)
{
// Ray hit, get hit point and normal
collision.hit = true;
collision.distance = t;
collision.normal = Vector3Normalize(Vector3CrossProduct(edge1, edge2));
collision.point = Vector3Add(ray.position, Vector3Scale(ray.direction, t));
}
return collision;
}
// Get collision info between ray and quad
// NOTE: The points are expected to be in counter-clockwise winding
RayCollision GetRayCollisionQuad(Ray ray, Vector3 p1, Vector3 p2, Vector3 p3, Vector3 p4)
{
RayCollision collision = { 0 };
collision = GetRayCollisionTriangle(ray, p1, p2, p4);
if (!collision.hit) collision = GetRayCollisionTriangle(ray, p2, p3, p4);
return collision;
}
//----------------------------------------------------------------------------------
// Module specific Functions Definition
//----------------------------------------------------------------------------------
#if defined(SUPPORT_FILEFORMAT_OBJ)
// Load OBJ mesh data
static Model LoadOBJ(const char *fileName)
{
Model model = { 0 };
tinyobj_attrib_t attrib = { 0 };
tinyobj_shape_t *meshes = NULL;
unsigned int meshCount = 0;
tinyobj_material_t *materials = NULL;
unsigned int materialCount = 0;
char *fileText = LoadFileText(fileName);
if (fileText != NULL)
{
unsigned int dataSize = (unsigned int)strlen(fileText);
char currentDir[1024] = { 0 };
strcpy(currentDir, GetWorkingDirectory());
const char *workingDir = GetDirectoryPath(fileName);
if (CHDIR(workingDir) != 0)
{
TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to change working directory", workingDir);
}
unsigned int flags = TINYOBJ_FLAG_TRIANGULATE;
int ret = tinyobj_parse_obj(&attrib, &meshes, &meshCount, &materials, &materialCount, fileText, dataSize, flags);
if (ret != TINYOBJ_SUCCESS) TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to load OBJ data", fileName);
else TRACELOG(LOG_INFO, "MODEL: [%s] OBJ data loaded successfully: %i meshes/%i materials", fileName, meshCount, materialCount);
model.meshCount = materialCount; // TODO: REVIEW!!!
// Init model materials array
if (materialCount > 0)
{
model.materialCount = materialCount;
model.materials = (Material *)RL_CALLOC(model.materialCount, sizeof(Material));
TraceLog(LOG_INFO, "MODEL: model has %i material meshes", materialCount);
}
else
{
model.meshCount = 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));
// Count the faces for each material
int *matFaces = RL_CALLOC(meshCount, sizeof(int));
for (unsigned int mi = 0; mi < meshCount; mi++)
{
for (unsigned int fi = 0; fi < meshes[mi].length; fi++)
{
int idx = attrib.material_ids[meshes[mi].face_offset + fi];
if (idx == -1) idx = 0; // for no material face (which could be the whole model)
matFaces[idx]++;
}
}
//--------------------------------------
// Create the material meshes
// Running counts/indexes for each material mesh as we are
// building them at the same time
int *vCount = RL_CALLOC(model.meshCount, sizeof(int));
int *vtCount = RL_CALLOC(model.meshCount, sizeof(int));
int *vnCount = RL_CALLOC(model.meshCount, sizeof(int));
int *faceCount = RL_CALLOC(model.meshCount, sizeof(int));
// Allocate space for each of the material meshes
for (int mi = 0; mi < model.meshCount; mi++)
{
model.meshes[mi].vertexCount = matFaces[mi]*3;
model.meshes[mi].triangleCount = matFaces[mi];
model.meshes[mi].vertices = (float *)RL_CALLOC(model.meshes[mi].vertexCount*3, sizeof(float));
model.meshes[mi].texcoords = (float *)RL_CALLOC(model.meshes[mi].vertexCount*2, sizeof(float));
model.meshes[mi].normals = (float *)RL_CALLOC(model.meshes[mi].vertexCount*3, sizeof(float));
model.meshMaterial[mi] = mi;
}
// Scan through the combined sub meshes and pick out each material mesh
for (unsigned int af = 0; af < attrib.num_faces; af++)
{
int mm = attrib.material_ids[af]; // mesh material for this face
if (mm == -1) { mm = 0; } // no material object..
// Get indices for the face
tinyobj_vertex_index_t idx0 = attrib.faces[3*af + 0];
tinyobj_vertex_index_t idx1 = attrib.faces[3*af + 1];
tinyobj_vertex_index_t idx2 = attrib.faces[3*af + 2];
// Fill vertices buffer (float) using vertex index of the face
for (int v = 0; v < 3; v++) { model.meshes[mm].vertices[vCount[mm] + v] = attrib.vertices[idx0.v_idx*3 + v]; } vCount[mm] +=3;
for (int v = 0; v < 3; v++) { model.meshes[mm].vertices[vCount[mm] + v] = attrib.vertices[idx1.v_idx*3 + v]; } vCount[mm] +=3;
for (int v = 0; v < 3; v++) { model.meshes[mm].vertices[vCount[mm] + v] = attrib.vertices[idx2.v_idx*3 + v]; } vCount[mm] +=3;
if (attrib.num_texcoords > 0)
{
// Fill texcoords buffer (float) using vertex index of the face
// NOTE: Y-coordinate must be flipped upside-down to account for
// raylib's upside down textures...
model.meshes[mm].texcoords[vtCount[mm] + 0] = attrib.texcoords[idx0.vt_idx*2 + 0];
model.meshes[mm].texcoords[vtCount[mm] + 1] = 1.0f - attrib.texcoords[idx0.vt_idx*2 + 1]; vtCount[mm] += 2;
model.meshes[mm].texcoords[vtCount[mm] + 0] = attrib.texcoords[idx1.vt_idx*2 + 0];
model.meshes[mm].texcoords[vtCount[mm] + 1] = 1.0f - attrib.texcoords[idx1.vt_idx*2 + 1]; vtCount[mm] += 2;
model.meshes[mm].texcoords[vtCount[mm] + 0] = attrib.texcoords[idx2.vt_idx*2 + 0];
model.meshes[mm].texcoords[vtCount[mm] + 1] = 1.0f - attrib.texcoords[idx2.vt_idx*2 + 1]; vtCount[mm] += 2;
}
if (attrib.num_normals > 0)
{
// Fill normals buffer (float) using vertex index of the face
for (int v = 0; v < 3; v++) { model.meshes[mm].normals[vnCount[mm] + v] = attrib.normals[idx0.vn_idx*3 + v]; } vnCount[mm] +=3;
for (int v = 0; v < 3; v++) { model.meshes[mm].normals[vnCount[mm] + v] = attrib.normals[idx1.vn_idx*3 + v]; } vnCount[mm] +=3;
for (int v = 0; v < 3; v++) { model.meshes[mm].normals[vnCount[mm] + v] = attrib.normals[idx2.vn_idx*3 + v]; } vnCount[mm] +=3;
}
}
// Init model materials
for (unsigned int m = 0; m < materialCount; m++)
{
// Init material to default
// NOTE: Uses default shader, which only supports MATERIAL_MAP_DIFFUSE
model.materials[m] = LoadMaterialDefault();
model.materials[m].maps[MATERIAL_MAP_DIFFUSE].texture = rlGetTextureDefault(); // Get default texture, in case no texture is defined
if (materials[m].diffuse_texname != NULL) model.materials[m].maps[MATERIAL_MAP_DIFFUSE].texture = LoadTexture(materials[m].diffuse_texname); //char *diffuse_texname; // map_Kd
else model.materials[m].maps[MATERIAL_MAP_DIFFUSE].texture = rlGetTextureDefault();
model.materials[m].maps[MATERIAL_MAP_DIFFUSE].color = (Color){ (unsigned char)(materials[m].diffuse[0]*255.0f), (unsigned char)(materials[m].diffuse[1]*255.0f), (unsigned char)(materials[m].diffuse[2]*255.0f), 255 }; //float diffuse[3];
model.materials[m].maps[MATERIAL_MAP_DIFFUSE].value = 0.0f;
if (materials[m].specular_texname != NULL) model.materials[m].maps[MATERIAL_MAP_SPECULAR].texture = LoadTexture(materials[m].specular_texname); //char *specular_texname; // map_Ks
model.materials[m].maps[MATERIAL_MAP_SPECULAR].color = (Color){ (unsigned char)(materials[m].specular[0]*255.0f), (unsigned char)(materials[m].specular[1]*255.0f), (unsigned char)(materials[m].specular[2]*255.0f), 255 }; //float specular[3];
model.materials[m].maps[MATERIAL_MAP_SPECULAR].value = 0.0f;
if (materials[m].bump_texname != NULL) model.materials[m].maps[MATERIAL_MAP_NORMAL].texture = LoadTexture(materials[m].bump_texname); //char *bump_texname; // map_bump, bump
model.materials[m].maps[MATERIAL_MAP_NORMAL].color = WHITE;
model.materials[m].maps[MATERIAL_MAP_NORMAL].value = materials[m].shininess;
model.materials[m].maps[MATERIAL_MAP_EMISSION].color = (Color){ (unsigned char)(materials[m].emission[0]*255.0f), (unsigned char)(materials[m].emission[1]*255.0f), (unsigned char)(materials[m].emission[2]*255.0f), 255 }; //float emission[3];
if (materials[m].displacement_texname != NULL) model.materials[m].maps[MATERIAL_MAP_HEIGHT].texture = LoadTexture(materials[m].displacement_texname); //char *displacement_texname; // disp
}
tinyobj_attrib_free(&attrib);
tinyobj_shapes_free(meshes, meshCount);
tinyobj_materials_free(materials, materialCount);
UnloadFileText(fileText);
RL_FREE(matFaces);
RL_FREE(vCount);
RL_FREE(vtCount);
RL_FREE(vnCount);
RL_FREE(faceCount);
if (CHDIR(currentDir) != 0)
{
TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to change working directory", currentDir);
}
}
return model;
}
#endif
#if defined(SUPPORT_FILEFORMAT_IQM)
// Load IQM mesh data
static Model LoadIQM(const char *fileName)
{
#define IQM_MAGIC "INTERQUAKEMODEL" // IQM file magic number
#define IQM_VERSION 2 // only IQM version 2 supported
#define BONE_NAME_LENGTH 32 // BoneInfo name string length
#define MESH_NAME_LENGTH 32 // Mesh name string length
#define MATERIAL_NAME_LENGTH 32 // Material name string length
unsigned int fileSize = 0;
unsigned char *fileData = LoadFileData(fileName, &fileSize);
unsigned char *fileDataPtr = fileData;
// IQM file structs
//-----------------------------------------------------------------------------------
typedef struct IQMHeader {
char magic[16];
unsigned int version;
unsigned int filesize;
unsigned int flags;
unsigned int num_text, ofs_text;
unsigned int num_meshes, ofs_meshes;
unsigned int num_vertexarrays, num_vertexes, ofs_vertexarrays;
unsigned int num_triangles, ofs_triangles, ofs_adjacency;
unsigned int num_joints, ofs_joints;
unsigned int num_poses, ofs_poses;
unsigned int num_anims, ofs_anims;
unsigned int num_frames, num_framechannels, ofs_frames, ofs_bounds;
unsigned int num_comment, ofs_comment;
unsigned int num_extensions, ofs_extensions;
} IQMHeader;
typedef struct IQMMesh {
unsigned int name;
unsigned int material;
unsigned int first_vertex, num_vertexes;
unsigned int first_triangle, num_triangles;
} IQMMesh;
typedef struct IQMTriangle {
unsigned int vertex[3];
} IQMTriangle;
typedef struct IQMJoint {
unsigned int name;
int parent;
float translate[3], rotate[4], scale[3];
} IQMJoint;
typedef struct IQMVertexArray {
unsigned int type;
unsigned int flags;
unsigned int format;
unsigned int size;
unsigned int offset;
} IQMVertexArray;
// NOTE: Below IQM structures are not used but listed for reference
/*
typedef struct IQMAdjacency {
unsigned int triangle[3];
} IQMAdjacency;
typedef struct IQMPose {
int parent;
unsigned int mask;
float channeloffset[10];
float channelscale[10];
} IQMPose;
typedef struct IQMAnim {
unsigned int name;
unsigned int first_frame, num_frames;
float framerate;
unsigned int flags;
} IQMAnim;
typedef struct IQMBounds {
float bbmin[3], bbmax[3];
float xyradius, radius;
} IQMBounds;
*/
//-----------------------------------------------------------------------------------
// IQM vertex data types
enum {
IQM_POSITION = 0,
IQM_TEXCOORD = 1,
IQM_NORMAL = 2,
IQM_TANGENT = 3, // NOTE: Tangents unused by default
IQM_BLENDINDEXES = 4,
IQM_BLENDWEIGHTS = 5,
IQM_COLOR = 6,
IQM_CUSTOM = 0x10 // NOTE: Custom vertex values unused by default
};
Model model = { 0 };
IQMMesh *imesh = NULL;
IQMTriangle *tri = NULL;
IQMVertexArray *va = NULL;
IQMJoint *ijoint = NULL;
float *vertex = NULL;
float *normal = NULL;
float *text = NULL;
char *blendi = NULL;
unsigned char *blendw = NULL;
unsigned char *color = NULL;
// In case file can not be read, return an empty model
if (fileDataPtr == NULL) return model;
// Read IQM header
IQMHeader *iqmHeader = (IQMHeader *)fileDataPtr;
if (memcmp(iqmHeader->magic, IQM_MAGIC, sizeof(IQM_MAGIC)) != 0)
{
TRACELOG(LOG_WARNING, "MODEL: [%s] IQM file is not a valid model", fileName);
return model;
}
if (iqmHeader->version != IQM_VERSION)
{
TRACELOG(LOG_WARNING, "MODEL: [%s] IQM file version not supported (%i)", fileName, iqmHeader->version);
return model;
}
//fileDataPtr += sizeof(IQMHeader); // Move file data pointer
// Meshes data processing
imesh = RL_MALLOC(iqmHeader->num_meshes*sizeof(IQMMesh));
//fseek(iqmFile, iqmHeader->ofs_meshes, SEEK_SET);
//fread(imesh, sizeof(IQMMesh)*iqmHeader->num_meshes, 1, iqmFile);
memcpy(imesh, fileDataPtr + iqmHeader->ofs_meshes, iqmHeader->num_meshes*sizeof(IQMMesh));
model.meshCount = iqmHeader->num_meshes;
model.meshes = RL_CALLOC(model.meshCount, sizeof(Mesh));
model.materialCount = model.meshCount;
model.materials = (Material *)RL_CALLOC(model.materialCount, sizeof(Material));
model.meshMaterial = (int *)RL_CALLOC(model.meshCount, sizeof(int));
char name[MESH_NAME_LENGTH] = { 0 };
char material[MATERIAL_NAME_LENGTH] = { 0 };
for (int i = 0; i < model.meshCount; i++)
{
//fseek(iqmFile, iqmHeader->ofs_text + imesh[i].name, SEEK_SET);
//fread(name, sizeof(char)*MESH_NAME_LENGTH, 1, iqmFile);
memcpy(name, fileDataPtr + iqmHeader->ofs_text + imesh[i].name, MESH_NAME_LENGTH*sizeof(char));
//fseek(iqmFile, iqmHeader->ofs_text + imesh[i].material, SEEK_SET);
//fread(material, sizeof(char)*MATERIAL_NAME_LENGTH, 1, iqmFile);
memcpy(material, fileDataPtr + iqmHeader->ofs_text + imesh[i].material, MATERIAL_NAME_LENGTH*sizeof(char));
model.materials[i] = LoadMaterialDefault();
TRACELOG(LOG_DEBUG, "MODEL: [%s] mesh name (%s), material (%s)", fileName, name, material);
model.meshes[i].vertexCount = imesh[i].num_vertexes;
model.meshes[i].vertices = RL_CALLOC(model.meshes[i].vertexCount*3, sizeof(float)); // Default vertex positions
model.meshes[i].normals = RL_CALLOC(model.meshes[i].vertexCount*3, sizeof(float)); // Default vertex normals
model.meshes[i].texcoords = RL_CALLOC(model.meshes[i].vertexCount*2, sizeof(float)); // Default vertex texcoords
model.meshes[i].boneIds = RL_CALLOC(model.meshes[i].vertexCount*4, sizeof(float)); // Up-to 4 bones supported!
model.meshes[i].boneWeights = RL_CALLOC(model.meshes[i].vertexCount*4, sizeof(float)); // Up-to 4 bones supported!
model.meshes[i].triangleCount = imesh[i].num_triangles;
model.meshes[i].indices = RL_CALLOC(model.meshes[i].triangleCount*3, sizeof(unsigned short));
// Animated verted data, what we actually process for rendering
// NOTE: Animated vertex should be re-uploaded to GPU (if not using GPU skinning)
model.meshes[i].animVertices = RL_CALLOC(model.meshes[i].vertexCount*3, sizeof(float));
model.meshes[i].animNormals = RL_CALLOC(model.meshes[i].vertexCount*3, sizeof(float));
}
// Triangles data processing
tri = RL_MALLOC(iqmHeader->num_triangles*sizeof(IQMTriangle));
//fseek(iqmFile, iqmHeader->ofs_triangles, SEEK_SET);
//fread(tri, iqmHeader->num_triangles*sizeof(IQMTriangle), 1, iqmFile);
memcpy(tri, fileDataPtr + iqmHeader->ofs_triangles, iqmHeader->num_triangles*sizeof(IQMTriangle));
for (int m = 0; m < model.meshCount; m++)
{
int tcounter = 0;
for (unsigned int i = imesh[m].first_triangle; i < (imesh[m].first_triangle + imesh[m].num_triangles); i++)
{
// IQM triangles indexes are stored in counter-clockwise, but raylib processes the index in linear order,
// expecting they point to the counter-clockwise vertex triangle, so we need to reverse triangle indexes
// NOTE: raylib renders vertex data in counter-clockwise order (standard convention) by default
model.meshes[m].indices[tcounter + 2] = tri[i].vertex[0] - imesh[m].first_vertex;
model.meshes[m].indices[tcounter + 1] = tri[i].vertex[1] - imesh[m].first_vertex;
model.meshes[m].indices[tcounter] = tri[i].vertex[2] - imesh[m].first_vertex;
tcounter += 3;
}
}
// Vertex arrays data processing
va = RL_MALLOC(iqmHeader->num_vertexarrays*sizeof(IQMVertexArray));
//fseek(iqmFile, iqmHeader->ofs_vertexarrays, SEEK_SET);
//fread(va, iqmHeader->num_vertexarrays*sizeof(IQMVertexArray), 1, iqmFile);
memcpy(va, fileDataPtr + iqmHeader->ofs_vertexarrays, iqmHeader->num_vertexarrays*sizeof(IQMVertexArray));
for (unsigned int i = 0; i < iqmHeader->num_vertexarrays; i++)
{
switch (va[i].type)
{
case IQM_POSITION:
{
vertex = RL_MALLOC(iqmHeader->num_vertexes*3*sizeof(float));
//fseek(iqmFile, va[i].offset, SEEK_SET);
//fread(vertex, iqmHeader->num_vertexes*3*sizeof(float), 1, iqmFile);
memcpy(vertex, fileDataPtr + va[i].offset, iqmHeader->num_vertexes*3*sizeof(float));
for (unsigned int m = 0; m < iqmHeader->num_meshes; m++)
{
int vCounter = 0;
for (unsigned int i = imesh[m].first_vertex*3; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*3; i++)
{
model.meshes[m].vertices[vCounter] = vertex[i];
model.meshes[m].animVertices[vCounter] = vertex[i];
vCounter++;
}
}
} break;
case IQM_NORMAL:
{
normal = RL_MALLOC(iqmHeader->num_vertexes*3*sizeof(float));
//fseek(iqmFile, va[i].offset, SEEK_SET);
//fread(normal, iqmHeader->num_vertexes*3*sizeof(float), 1, iqmFile);
memcpy(normal, fileDataPtr + va[i].offset, iqmHeader->num_vertexes*3*sizeof(float));
for (unsigned int m = 0; m < iqmHeader->num_meshes; m++)
{
int vCounter = 0;
for (unsigned int i = imesh[m].first_vertex*3; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*3; i++)
{
model.meshes[m].normals[vCounter] = normal[i];
model.meshes[m].animNormals[vCounter] = normal[i];
vCounter++;
}
}
} break;
case IQM_TEXCOORD:
{
text = RL_MALLOC(iqmHeader->num_vertexes*2*sizeof(float));
//fseek(iqmFile, va[i].offset, SEEK_SET);
//fread(text, iqmHeader->num_vertexes*2*sizeof(float), 1, iqmFile);
memcpy(text, fileDataPtr + va[i].offset, iqmHeader->num_vertexes*2*sizeof(float));
for (unsigned int m = 0; m < iqmHeader->num_meshes; m++)
{
int vCounter = 0;
for (unsigned int i = imesh[m].first_vertex*2; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*2; i++)
{
model.meshes[m].texcoords[vCounter] = text[i];
vCounter++;
}
}
} break;
case IQM_BLENDINDEXES:
{
blendi = RL_MALLOC(iqmHeader->num_vertexes*4*sizeof(char));
//fseek(iqmFile, va[i].offset, SEEK_SET);
//fread(blendi, iqmHeader->num_vertexes*4*sizeof(char), 1, iqmFile);
memcpy(blendi, fileDataPtr + va[i].offset, iqmHeader->num_vertexes*4*sizeof(char));
for (unsigned int m = 0; m < iqmHeader->num_meshes; m++)
{
int boneCounter = 0;
for (unsigned int i = imesh[m].first_vertex*4; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*4; i++)
{
model.meshes[m].boneIds[boneCounter] = blendi[i];
boneCounter++;
}
}
} break;
case IQM_BLENDWEIGHTS:
{
blendw = RL_MALLOC(iqmHeader->num_vertexes*4*sizeof(unsigned char));
//fseek(iqmFile, va[i].offset, SEEK_SET);
//fread(blendw, iqmHeader->num_vertexes*4*sizeof(unsigned char), 1, iqmFile);
memcpy(blendw, fileDataPtr + va[i].offset, iqmHeader->num_vertexes*4*sizeof(unsigned char));
for (unsigned int m = 0; m < iqmHeader->num_meshes; m++)
{
int boneCounter = 0;
for (unsigned int i = imesh[m].first_vertex*4; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*4; i++)
{
model.meshes[m].boneWeights[boneCounter] = blendw[i]/255.0f;
boneCounter++;
}
}
} break;
case IQM_COLOR:
{
color = RL_MALLOC(iqmHeader->num_vertexes*4*sizeof(unsigned char));
//fseek(iqmFile, va[i].offset, SEEK_SET);
//fread(blendw, iqmHeader->num_vertexes*4*sizeof(unsigned char), 1, iqmFile);
memcpy(color, fileDataPtr + va[i].offset, iqmHeader->num_vertexes*4*sizeof(unsigned char));
for (unsigned int m = 0; m < iqmHeader->num_meshes; m++)
{
model.meshes[m].colors = RL_CALLOC(model.meshes[m].vertexCount*4, sizeof(unsigned char));
int vCounter = 0;
for (unsigned int i = imesh[m].first_vertex*4; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*4; i++)
{
model.meshes[m].colors[vCounter] = color[i];
vCounter++;
}
}
} break;
}
}
// Bones (joints) data processing
ijoint = RL_MALLOC(iqmHeader->num_joints*sizeof(IQMJoint));
//fseek(iqmFile, iqmHeader->ofs_joints, SEEK_SET);
//fread(ijoint, iqmHeader->num_joints*sizeof(IQMJoint), 1, iqmFile);
memcpy(ijoint, fileDataPtr + iqmHeader->ofs_joints, iqmHeader->num_joints*sizeof(IQMJoint));
model.boneCount = iqmHeader->num_joints;
model.bones = RL_MALLOC(iqmHeader->num_joints*sizeof(BoneInfo));
model.bindPose = RL_MALLOC(iqmHeader->num_joints*sizeof(Transform));
for (unsigned int i = 0; i < iqmHeader->num_joints; i++)
{
// Bones
model.bones[i].parent = ijoint[i].parent;
//fseek(iqmFile, iqmHeader->ofs_text + ijoint[i].name, SEEK_SET);
//fread(model.bones[i].name, BONE_NAME_LENGTH*sizeof(char), 1, iqmFile);
memcpy(model.bones[i].name, fileDataPtr + iqmHeader->ofs_text + ijoint[i].name, BONE_NAME_LENGTH*sizeof(char));
// Bind pose (base pose)
model.bindPose[i].translation.x = ijoint[i].translate[0];
model.bindPose[i].translation.y = ijoint[i].translate[1];
model.bindPose[i].translation.z = ijoint[i].translate[2];
model.bindPose[i].rotation.x = ijoint[i].rotate[0];
model.bindPose[i].rotation.y = ijoint[i].rotate[1];
model.bindPose[i].rotation.z = ijoint[i].rotate[2];
model.bindPose[i].rotation.w = ijoint[i].rotate[3];
model.bindPose[i].scale.x = ijoint[i].scale[0];
model.bindPose[i].scale.y = ijoint[i].scale[1];
model.bindPose[i].scale.z = ijoint[i].scale[2];
}
// Build bind pose from parent joints
for (int i = 0; i < model.boneCount; i++)
{
if (model.bones[i].parent >= 0)
{
model.bindPose[i].rotation = QuaternionMultiply(model.bindPose[model.bones[i].parent].rotation, model.bindPose[i].rotation);
model.bindPose[i].translation = Vector3RotateByQuaternion(model.bindPose[i].translation, model.bindPose[model.bones[i].parent].rotation);
model.bindPose[i].translation = Vector3Add(model.bindPose[i].translation, model.bindPose[model.bones[i].parent].translation);
model.bindPose[i].scale = Vector3Multiply(model.bindPose[i].scale, model.bindPose[model.bones[i].parent].scale);
}
}
RL_FREE(fileData);
RL_FREE(imesh);
RL_FREE(tri);
RL_FREE(va);
RL_FREE(vertex);
RL_FREE(normal);
RL_FREE(text);
RL_FREE(blendi);
RL_FREE(blendw);
RL_FREE(ijoint);
return model;
}
// Load IQM animation data
static ModelAnimation* LoadIQMModelAnimations(const char *fileName, int *animCount)
{
#define IQM_MAGIC "INTERQUAKEMODEL" // IQM file magic number
#define IQM_VERSION 2 // only IQM version 2 supported
unsigned int fileSize = 0;
unsigned char *fileData = LoadFileData(fileName, &fileSize);
unsigned char *fileDataPtr = fileData;
typedef struct IQMHeader {
char magic[16];
unsigned int version;
unsigned int filesize;
unsigned int flags;
unsigned int num_text, ofs_text;
unsigned int num_meshes, ofs_meshes;
unsigned int num_vertexarrays, num_vertexes, ofs_vertexarrays;
unsigned int num_triangles, ofs_triangles, ofs_adjacency;
unsigned int num_joints, ofs_joints;
unsigned int num_poses, ofs_poses;
unsigned int num_anims, ofs_anims;
unsigned int num_frames, num_framechannels, ofs_frames, ofs_bounds;
unsigned int num_comment, ofs_comment;
unsigned int num_extensions, ofs_extensions;
} IQMHeader;
typedef struct IQMPose {
int parent;
unsigned int mask;
float channeloffset[10];
float channelscale[10];
} IQMPose;
typedef struct IQMAnim {
unsigned int name;
unsigned int first_frame, num_frames;
float framerate;
unsigned int flags;
} IQMAnim;
// In case file can not be read, return an empty model
if (fileDataPtr == NULL) return NULL;
// Read IQM header
IQMHeader *iqmHeader = (IQMHeader *)fileDataPtr;
if (memcmp(iqmHeader->magic, IQM_MAGIC, sizeof(IQM_MAGIC)) != 0)
{
TRACELOG(LOG_WARNING, "MODEL: [%s] IQM file is not a valid model", fileName);
return NULL;
}
if (iqmHeader->version != IQM_VERSION)
{
TRACELOG(LOG_WARNING, "MODEL: [%s] IQM file version not supported (%i)", fileName, iqmHeader->version);
return NULL;
}
// Get bones data
IQMPose *poses = RL_MALLOC(iqmHeader->num_poses*sizeof(IQMPose));
//fseek(iqmFile, iqmHeader->ofs_poses, SEEK_SET);
//fread(poses, iqmHeader->num_poses*sizeof(IQMPose), 1, iqmFile);
memcpy(poses, fileDataPtr + iqmHeader->ofs_poses, iqmHeader->num_poses*sizeof(IQMPose));
// Get animations data
*animCount = iqmHeader->num_anims;
IQMAnim *anim = RL_MALLOC(iqmHeader->num_anims*sizeof(IQMAnim));
//fseek(iqmFile, iqmHeader->ofs_anims, SEEK_SET);
//fread(anim, iqmHeader->num_anims*sizeof(IQMAnim), 1, iqmFile);
memcpy(anim, fileDataPtr + iqmHeader->ofs_anims, iqmHeader->num_anims*sizeof(IQMAnim));
ModelAnimation *animations = RL_MALLOC(iqmHeader->num_anims*sizeof(ModelAnimation));
// frameposes
unsigned short *framedata = RL_MALLOC(iqmHeader->num_frames*iqmHeader->num_framechannels*sizeof(unsigned short));
//fseek(iqmFile, iqmHeader->ofs_frames, SEEK_SET);
//fread(framedata, iqmHeader->num_frames*iqmHeader->num_framechannels*sizeof(unsigned short), 1, iqmFile);
memcpy(framedata, fileDataPtr + iqmHeader->ofs_frames, iqmHeader->num_frames*iqmHeader->num_framechannels*sizeof(unsigned short));
for (unsigned int a = 0; a < iqmHeader->num_anims; a++)
{
animations[a].frameCount = anim[a].num_frames;
animations[a].boneCount = iqmHeader->num_poses;
animations[a].bones = RL_MALLOC(iqmHeader->num_poses*sizeof(BoneInfo));
animations[a].framePoses = RL_MALLOC(anim[a].num_frames*sizeof(Transform *));
// animations[a].framerate = anim.framerate; // TODO: Use framerate?
for (unsigned int j = 0; j < iqmHeader->num_poses; j++)
{
strcpy(animations[a].bones[j].name, "ANIMJOINTNAME");
animations[a].bones[j].parent = poses[j].parent;
}
for (unsigned int j = 0; j < anim[a].num_frames; j++) animations[a].framePoses[j] = RL_MALLOC(iqmHeader->num_poses*sizeof(Transform));
int dcounter = anim[a].first_frame*iqmHeader->num_framechannels;
for (unsigned int frame = 0; frame < anim[a].num_frames; frame++)
{
for (unsigned int i = 0; i < iqmHeader->num_poses; i++)
{
animations[a].framePoses[frame][i].translation.x = poses[i].channeloffset[0];
if (poses[i].mask & 0x01)
{
animations[a].framePoses[frame][i].translation.x += framedata[dcounter]*poses[i].channelscale[0];
dcounter++;
}
animations[a].framePoses[frame][i].translation.y = poses[i].channeloffset[1];
if (poses[i].mask & 0x02)
{
animations[a].framePoses[frame][i].translation.y += framedata[dcounter]*poses[i].channelscale[1];
dcounter++;
}
animations[a].framePoses[frame][i].translation.z = poses[i].channeloffset[2];
if (poses[i].mask & 0x04)
{
animations[a].framePoses[frame][i].translation.z += framedata[dcounter]*poses[i].channelscale[2];
dcounter++;
}
animations[a].framePoses[frame][i].rotation.x = poses[i].channeloffset[3];
if (poses[i].mask & 0x08)
{
animations[a].framePoses[frame][i].rotation.x += framedata[dcounter]*poses[i].channelscale[3];
dcounter++;
}
animations[a].framePoses[frame][i].rotation.y = poses[i].channeloffset[4];
if (poses[i].mask & 0x10)
{
animations[a].framePoses[frame][i].rotation.y += framedata[dcounter]*poses[i].channelscale[4];
dcounter++;
}
animations[a].framePoses[frame][i].rotation.z = poses[i].channeloffset[5];
if (poses[i].mask & 0x20)
{
animations[a].framePoses[frame][i].rotation.z += framedata[dcounter]*poses[i].channelscale[5];
dcounter++;
}
animations[a].framePoses[frame][i].rotation.w = poses[i].channeloffset[6];
if (poses[i].mask & 0x40)
{
animations[a].framePoses[frame][i].rotation.w += framedata[dcounter]*poses[i].channelscale[6];
dcounter++;
}
animations[a].framePoses[frame][i].scale.x = poses[i].channeloffset[7];
if (poses[i].mask & 0x80)
{
animations[a].framePoses[frame][i].scale.x += framedata[dcounter]*poses[i].channelscale[7];
dcounter++;
}
animations[a].framePoses[frame][i].scale.y = poses[i].channeloffset[8];
if (poses[i].mask & 0x100)
{
animations[a].framePoses[frame][i].scale.y += framedata[dcounter]*poses[i].channelscale[8];
dcounter++;
}
animations[a].framePoses[frame][i].scale.z = poses[i].channeloffset[9];
if (poses[i].mask & 0x200)
{
animations[a].framePoses[frame][i].scale.z += framedata[dcounter]*poses[i].channelscale[9];
dcounter++;
}
animations[a].framePoses[frame][i].rotation = QuaternionNormalize(animations[a].framePoses[frame][i].rotation);
}
}
// Build frameposes
for (unsigned int frame = 0; frame < anim[a].num_frames; frame++)
{
for (int i = 0; i < animations[a].boneCount; i++)
{
if (animations[a].bones[i].parent >= 0)
{
animations[a].framePoses[frame][i].rotation = QuaternionMultiply(animations[a].framePoses[frame][animations[a].bones[i].parent].rotation, animations[a].framePoses[frame][i].rotation);
animations[a].framePoses[frame][i].translation = Vector3RotateByQuaternion(animations[a].framePoses[frame][i].translation, animations[a].framePoses[frame][animations[a].bones[i].parent].rotation);
animations[a].framePoses[frame][i].translation = Vector3Add(animations[a].framePoses[frame][i].translation, animations[a].framePoses[frame][animations[a].bones[i].parent].translation);
animations[a].framePoses[frame][i].scale = Vector3Multiply(animations[a].framePoses[frame][i].scale, animations[a].framePoses[frame][animations[a].bones[i].parent].scale);
}
}
}
}
RL_FREE(fileData);
RL_FREE(framedata);
RL_FREE(poses);
RL_FREE(anim);
return animations;
}
#endif
#if defined(SUPPORT_FILEFORMAT_GLTF)
static const unsigned char base64Table[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 62, 0, 0, 0, 63, 52, 53,
54, 55, 56, 57, 58, 59, 60, 61, 0, 0,
0, 0, 0, 0, 0, 0, 1, 2, 3, 4,
5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
25, 0, 0, 0, 0, 0, 0, 26, 27, 28,
29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
49, 50, 51
};
static int GetSizeBase64(char *input)
{
int size = 0;
for (int i = 0; input[4*i] != 0; i++)
{
if (input[4*i + 3] == '=')
{
if (input[4*i + 2] == '=') size += 1;
else size += 2;
}
else size += 3;
}
return size;
}
static unsigned char *DecodeBase64(char *input, int *size)
{
*size = GetSizeBase64(input);
unsigned char *buf = (unsigned char *)RL_MALLOC(*size);
for (int i = 0; i < *size/3; i++)
{
unsigned char a = base64Table[(int)input[4*i]];
unsigned char b = base64Table[(int)input[4*i + 1]];
unsigned char c = base64Table[(int)input[4*i + 2]];
unsigned char d = base64Table[(int)input[4*i + 3]];
buf[3*i] = (a << 2) | (b >> 4);
buf[3*i + 1] = (b << 4) | (c >> 2);
buf[3*i + 2] = (c << 6) | d;
}
if (*size%3 == 1)
{
int n = *size/3;
unsigned char a = base64Table[(int)input[4*n]];
unsigned char b = base64Table[(int)input[4*n + 1]];
buf[*size - 1] = (a << 2) | (b >> 4);
}
else if (*size%3 == 2)
{
int n = *size/3;
unsigned char a = base64Table[(int)input[4*n]];
unsigned char b = base64Table[(int)input[4*n + 1]];
unsigned char c = base64Table[(int)input[4*n + 2]];
buf[*size - 2] = (a << 2) | (b >> 4);
buf[*size - 1] = (b << 4) | (c >> 2);
}
return buf;
}
// Load texture from cgltf_image
static Image LoadImageFromCgltfImage(cgltf_image *image, const char *texPath, Color tint)
{
Image rimage = { 0 };
if (image->uri)
{
if ((strlen(image->uri) > 5) &&
(image->uri[0] == 'd') &&
(image->uri[1] == 'a') &&
(image->uri[2] == 't') &&
(image->uri[3] == 'a') &&
(image->uri[4] == ':'))
{
// Data URI
// Format: data:<mediatype>;base64,<data>
// Find the comma
int i = 0;
while ((image->uri[i] != ',') && (image->uri[i] != 0)) i++;
if (image->uri[i] == 0) TRACELOG(LOG_WARNING, "IMAGE: glTF data URI is not a valid image");
else
{
int size = 0;
unsigned char *data = DecodeBase64(image->uri + i + 1, &size);
int width, height;
unsigned char *raw = stbi_load_from_memory(data, size, &width, &height, NULL, 4);
RL_FREE(data);
rimage.data = raw;
rimage.width = width;
rimage.height = height;
rimage.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8;
rimage.mipmaps = 1;
// TODO: Tint shouldn't be applied here!
ImageColorTint(&rimage, tint);
}
}
else
{
rimage = LoadImage(TextFormat("%s/%s", texPath, image->uri));
// TODO: Tint shouldn't be applied here!
ImageColorTint(&rimage, tint);
}
}
else if (image->buffer_view)
{
unsigned char *data = RL_MALLOC(image->buffer_view->size);
int n = (int)image->buffer_view->offset;
int stride = (int)image->buffer_view->stride ? (int)image->buffer_view->stride : 1;
for (unsigned int i = 0; i < image->buffer_view->size; i++)
{
data[i] = ((unsigned char *)image->buffer_view->buffer->data)[n];
n += stride;
}
int width, height;
unsigned char *raw = stbi_load_from_memory(data, (int)image->buffer_view->size, &width, &height, NULL, 4);
RL_FREE(data);
rimage.data = raw;
rimage.width = width;
rimage.height = height;
rimage.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8;
rimage.mipmaps = 1;
// TODO: Tint shouldn't be applied here!
ImageColorTint(&rimage, tint);
}
else rimage = GenImageColor(1, 1, tint);
return rimage;
}
//
static bool ReadGLTFValue(cgltf_accessor *acc, unsigned int index, void *variable)
{
unsigned int typeElements = 0;
switch (acc->type)
{
case cgltf_type_scalar: typeElements = 1; break;
case cgltf_type_vec2: typeElements = 2; break;
case cgltf_type_vec3: typeElements = 3; break;
case cgltf_type_vec4:
case cgltf_type_mat2: typeElements = 4; break;
case cgltf_type_mat3: typeElements = 9; break;
case cgltf_type_mat4: typeElements = 16; break;
case cgltf_type_invalid: typeElements = 0; break;
default: break;
}
unsigned int typeSize = 0;
switch (acc->component_type)
{
case cgltf_component_type_r_8u:
case cgltf_component_type_r_8: typeSize = 1; break;
case cgltf_component_type_r_16u:
case cgltf_component_type_r_16: typeSize = 2; break;
case cgltf_component_type_r_32f:
case cgltf_component_type_r_32u: typeSize = 4; break;
case cgltf_component_type_invalid: typeSize = 0; break;
default: break;
}
unsigned int singleElementSize = typeSize*typeElements;
if (acc->count == 2)
{
if (index > 1) return false;
memcpy(variable, index == 0 ? acc->min : acc->max, singleElementSize);
return true;
}
memset(variable, 0, singleElementSize);
if (acc->buffer_view == NULL || acc->buffer_view->buffer == NULL || acc->buffer_view->buffer->data == NULL) return false;
if (!acc->buffer_view->stride)
{
void *readPosition = ((char *)acc->buffer_view->buffer->data) + (index*singleElementSize) + acc->buffer_view->offset + acc->offset;
memcpy(variable, readPosition, singleElementSize);
}
else
{
void *readPosition = ((char *)acc->buffer_view->buffer->data) + (index*acc->buffer_view->stride) + acc->buffer_view->offset + acc->offset;
memcpy(variable, readPosition, singleElementSize);
}
return true;
}
static void *ReadGLTFValuesAs(cgltf_accessor* acc, cgltf_component_type type, bool adjustOnDownCasting)
{
unsigned int count = acc->count;
unsigned int typeSize = 0;
switch (type)
{
case cgltf_component_type_r_8u:
case cgltf_component_type_r_8: typeSize = 1; break;
case cgltf_component_type_r_16u:
case cgltf_component_type_r_16: typeSize = 2; break;
case cgltf_component_type_r_32f:
case cgltf_component_type_r_32u: typeSize = 4; break;
case cgltf_component_type_invalid: typeSize = 0; break;
default: break;
}
unsigned int typeElements = 0;
switch (acc->type)
{
case cgltf_type_scalar: typeElements = 1; break;
case cgltf_type_vec2: typeElements = 2; break;
case cgltf_type_vec3: typeElements = 3; break;
case cgltf_type_vec4:
case cgltf_type_mat2: typeElements = 4; break;
case cgltf_type_mat3: typeElements = 9; break;
case cgltf_type_mat4: typeElements = 16; break;
case cgltf_type_invalid: typeElements = 0; break;
default: break;
}
if (acc->component_type == type)
{
void *array = RL_MALLOC(count*typeElements*typeSize);
for (unsigned int i = 0; i < count; i++) ReadGLTFValue(acc, i, (char *)array + i*typeElements*typeSize);
return array;
}
else
{
unsigned int accTypeSize = 0;
switch (acc->component_type)
{
case cgltf_component_type_r_8u:
case cgltf_component_type_r_8: accTypeSize = 1; break;
case cgltf_component_type_r_16u:
case cgltf_component_type_r_16: accTypeSize = 2; break;
case cgltf_component_type_r_32f:
case cgltf_component_type_r_32u: accTypeSize = 4; break;
case cgltf_component_type_invalid: accTypeSize = 0; break;
default: break;
}
void *array = RL_MALLOC(count*typeElements*typeSize);
void *additionalArray = RL_MALLOC(count*typeElements*accTypeSize);
for (unsigned int i = 0; i < count; i++)
{
ReadGLTFValue(acc, i, (char *)additionalArray + i*typeElements*accTypeSize);
}
switch (acc->component_type)
{
case cgltf_component_type_r_8u:
{
unsigned char *typedAdditionalArray = (unsigned char *)additionalArray;
switch (type)
{
case cgltf_component_type_r_8:
{
char *typedArray = (char *)array;
for (unsigned int i = 0; i < count*typeElements; i++)
{
if (adjustOnDownCasting) typedArray[i] = (char)(typedAdditionalArray[i]/(UCHAR_MAX/CHAR_MAX));
else typedArray[i] = (char)typedAdditionalArray[i];
}
} break;
case cgltf_component_type_r_16u:
{
unsigned short *typedArray = (unsigned short *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (unsigned short)typedAdditionalArray[i];
} break;
case cgltf_component_type_r_16:
{
short *typedArray = (short *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (short)typedAdditionalArray[i];
} break;
case cgltf_component_type_r_32f:
{
float *typedArray = (float *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (float)typedAdditionalArray[i];
} break;
case cgltf_component_type_r_32u:
{
unsigned int *typedArray = (unsigned int *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (unsigned int)typedAdditionalArray[i];
} break;
default:
{
RL_FREE(array);
RL_FREE(additionalArray);
return NULL;
} break;
}
} break;
case cgltf_component_type_r_8:
{
char *typedAdditionalArray = (char *)additionalArray;
switch (type)
{
case cgltf_component_type_r_8u:
{
unsigned char *typedArray = (unsigned char *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (unsigned char)typedAdditionalArray[i];
} break;
case cgltf_component_type_r_16u:
{
unsigned short *typedArray = (unsigned short *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (unsigned short)typedAdditionalArray[i];
} break;
case cgltf_component_type_r_16:
{
short *typedArray = (short *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (short)typedAdditionalArray[i];
} break;
case cgltf_component_type_r_32f:
{
float *typedArray = (float *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (float)typedAdditionalArray[i];
} break;
case cgltf_component_type_r_32u:
{
unsigned int *typedArray = (unsigned int *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (unsigned int)typedAdditionalArray[i];
} break;
default:
{
RL_FREE(array);
RL_FREE(additionalArray);
return NULL;
} break;
}
} break;
case cgltf_component_type_r_16u:
{
unsigned short *typedAdditionalArray = (unsigned short *)additionalArray;
switch (type)
{
case cgltf_component_type_r_8u:
{
unsigned char *typedArray = (unsigned char *)array;
for (unsigned int i = 0; i < count*typeElements; i++)
{
if (adjustOnDownCasting) typedArray[i] = (unsigned char)(typedAdditionalArray[i]/(USHRT_MAX/UCHAR_MAX));
else typedArray[i] = (unsigned char)typedAdditionalArray[i];
}
} break;
case cgltf_component_type_r_8:
{
char *typedArray = (char *) array;
for (unsigned int i = 0; i < count*typeElements; i++)
{
if (adjustOnDownCasting) typedArray[i] = (char)(typedAdditionalArray[i]/(USHRT_MAX/CHAR_MAX));
else typedArray[i] = (char)typedAdditionalArray[i];
}
} break;
case cgltf_component_type_r_16:
{
short *typedArray = (short *)array;
for (unsigned int i = 0; i < count*typeElements; i++)
{
if (adjustOnDownCasting) typedArray[i] = (short)(typedAdditionalArray[i]/(USHRT_MAX/SHRT_MAX));
else typedArray[i] = (short)typedAdditionalArray[i];
}
} break;
case cgltf_component_type_r_32f:
{
float* typedArray = (float*) array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (float)typedAdditionalArray[i];
} break;
case cgltf_component_type_r_32u:
{
unsigned int* typedArray = (unsigned int*) array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (unsigned int)typedAdditionalArray[i];
} break;
default:
{
RL_FREE(array);
RL_FREE(additionalArray);
return NULL;
} break;
}
} break;
case cgltf_component_type_r_16:
{
short *typedAdditionalArray = (short *)additionalArray;
switch (type)
{
case cgltf_component_type_r_8u:
{
unsigned char *typedArray = (unsigned char *)array;
for (unsigned int i = 0; i < count*typeElements; i++)
{
if (adjustOnDownCasting) typedArray[i] = (unsigned char)(typedAdditionalArray[i]/(SHRT_MAX/UCHAR_MAX));
else typedArray[i] = (unsigned char)typedAdditionalArray[i];
}
} break;
case cgltf_component_type_r_8:
{
char *typedArray = (char *)array;
for (unsigned int i = 0; i < count*typeElements; i++)
{
if (adjustOnDownCasting) typedArray[i] = (char)(typedAdditionalArray[i]/(SHRT_MAX/CHAR_MAX));
else typedArray[i] = (char)typedAdditionalArray[i];
}
} break;
case cgltf_component_type_r_16u:
{
unsigned short *typedArray = (unsigned short *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (unsigned short)typedAdditionalArray[i];
} break;
case cgltf_component_type_r_32f:
{
float *typedArray = (float *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (float)typedAdditionalArray[i];
} break;
case cgltf_component_type_r_32u:
{
unsigned int *typedArray = (unsigned int *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (unsigned int)typedAdditionalArray[i];
} break;
default:
{
RL_FREE(array);
RL_FREE(additionalArray);
return NULL;
} break;
}
} break;
case cgltf_component_type_r_32f:
{
float *typedAdditionalArray = (float *)additionalArray;
switch (type)
{
case cgltf_component_type_r_8u:
{
unsigned char *typedArray = (unsigned char *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (unsigned char)typedAdditionalArray[i];
} break;
case cgltf_component_type_r_8:
{
char *typedArray = (char *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (char)typedAdditionalArray[i];
} break;
case cgltf_component_type_r_16u:
{
unsigned short *typedArray = (unsigned short *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (unsigned short)typedAdditionalArray[i];
} break;
case cgltf_component_type_r_16:
{
short *typedArray = (short *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (short)typedAdditionalArray[i];
} break;
case cgltf_component_type_r_32u:
{
unsigned int *typedArray = (unsigned int *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (unsigned int)typedAdditionalArray[i];
} break;
default:
{
RL_FREE(array);
RL_FREE(additionalArray);
return NULL;
} break;
}
} break;
case cgltf_component_type_r_32u:
{
unsigned int *typedAdditionalArray = (unsigned int *)additionalArray;
switch (type)
{
case cgltf_component_type_r_8u:
{
unsigned char *typedArray = (unsigned char *)array;
for (unsigned int i = 0; i < count*typeElements; i++)
{
if (adjustOnDownCasting) typedArray[i] = (unsigned char)(typedAdditionalArray[i]/(UINT_MAX/UCHAR_MAX));
else typedArray[i] = (unsigned char)typedAdditionalArray[i];
}
} break;
case cgltf_component_type_r_8:
{
char *typedArray = (char *)array;
for (unsigned int i = 0; i < count*typeElements; i++)
{
if (adjustOnDownCasting) typedArray[i] = (char)(typedAdditionalArray[i]/(UINT_MAX/CHAR_MAX));
else typedArray[i] = (char)typedAdditionalArray[i];
}
} break;
case cgltf_component_type_r_16u:
{
unsigned short *typedArray = (unsigned short *)array;
for (unsigned int i = 0; i < count*typeElements; i++)
{
if (adjustOnDownCasting) typedArray[i] = (unsigned short)(typedAdditionalArray[i]/(UINT_MAX/USHRT_MAX));
else typedArray[i] = (unsigned short)typedAdditionalArray[i];
}
} break;
case cgltf_component_type_r_16:
{
short *typedArray = (short *)array;
for (unsigned int i = 0; i < count*typeElements; i++)
{
if (adjustOnDownCasting) typedArray[i] = (short)(typedAdditionalArray[i]/(UINT_MAX/SHRT_MAX));
else typedArray[i] = (short)typedAdditionalArray[i];
}
} break;
case cgltf_component_type_r_32f:
{
float *typedArray = (float *)array;
for (unsigned int i = 0; i < count*typeElements; i++) typedArray[i] = (float)typedAdditionalArray[i];
} break;
default:
{
RL_FREE(array);
RL_FREE(additionalArray);
return NULL;
} break;
}
} break;
default:
{
RL_FREE(array);
RL_FREE(additionalArray);
return NULL;
} break;
}
RL_FREE(additionalArray);
return array;
}
}
// LoadGLTF loads in model data from given filename, supporting both .gltf and .glb
static Model LoadGLTF(const char *fileName)
{
/***********************************************************************************
Function implemented by Wilhem Barbier(@wbrbr), with modifications by Tyler Bezera(@gamerfiend) and Hristo Stamenov(@object71)
Features:
- Supports .gltf and .glb files
- Supports embedded (base64) or external textures
- Loads all raylib supported material textures, values and colors
- Supports multiple mesh per model and multiple primitives per model
Some restrictions (not exhaustive):
- Triangle-only meshes
- Not supported node hierarchies or transforms
- Only supports unsigned short indices (no byte/unsigned int)
- Only supports float for texture coordinates (no byte/unsigned short)
*************************************************************************************/
Model model = { 0 };
// glTF file loading
unsigned int dataSize = 0;
unsigned char *fileData = LoadFileData(fileName, &dataSize);
if (fileData == NULL) return model;
// glTF data loading
cgltf_options options = { 0 };
cgltf_data *data = NULL;
cgltf_result result = cgltf_parse(&options, fileData, dataSize, &data);
if (result == cgltf_result_success)
{
TRACELOG(LOG_INFO, "MODEL: [%s] glTF meshes (%s) count: %i", fileName, (data->file_type == 2)? "glb" : "gltf", data->meshes_count);
TRACELOG(LOG_INFO, "MODEL: [%s] glTF materials (%s) count: %i", fileName, (data->file_type == 2)? "glb" : "gltf", data->materials_count);
// Read data buffers
result = cgltf_load_buffers(&options, data, fileName);
if (result != cgltf_result_success) TRACELOG(LOG_INFO, "MODEL: [%s] Failed to load mesh/material buffers", fileName);
if (data->scenes_count > 1) TRACELOG(LOG_INFO, "MODEL: [%s] Has multiple scenes but only the first one will be loaded", fileName);
int primitivesCount = 0;
for (unsigned int i = 0; i < data->scene->nodes_count; i++)
{
GetGLTFPrimitiveCount(data->scene->nodes[i], &primitivesCount);
}
// Process glTF data and map to model
model.meshCount = primitivesCount;
model.meshes = RL_CALLOC(model.meshCount, sizeof(Mesh));
model.materialCount = (int)data->materials_count + 1;
model.materials = RL_MALLOC(model.materialCount*sizeof(Material));
model.meshMaterial = RL_MALLOC(model.meshCount*sizeof(int));
model.boneCount = (int)data->nodes_count;
model.bones = RL_CALLOC(model.boneCount, sizeof(BoneInfo));
model.bindPose = RL_CALLOC(model.boneCount, sizeof(Transform));
InitGLTFBones(&model, data);
LoadGLTFMaterial(&model, fileName, data);
int primitiveIndex = 0;
for (unsigned int i = 0; i < data->scene->nodes_count; i++)
{
Matrix staticTransform = MatrixIdentity();
LoadGLTFNode(data, data->scene->nodes[i], &model, staticTransform, &primitiveIndex, fileName);
}
cgltf_free(data);
}
else TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to load glTF data", fileName);
RL_FREE(fileData);
return model;
}
static void InitGLTFBones(Model* model, const cgltf_data* data)
{
for (unsigned int j = 0; j < data->nodes_count; j++)
{
strcpy(model->bones[j].name, data->nodes[j].name == 0 ? "ANIMJOINT" : data->nodes[j].name);
model->bones[j].parent = (data->nodes[j].parent != NULL) ? (int)(data->nodes[j].parent - data->nodes) : -1;
}
for (unsigned int i = 0; i < data->nodes_count; i++)
{
if (data->nodes[i].has_translation) memcpy(&model->bindPose[i].translation, data->nodes[i].translation, 3*sizeof(float));
else model->bindPose[i].translation = Vector3Zero();
if (data->nodes[i].has_rotation) memcpy(&model->bindPose[i].rotation, data->nodes[i].rotation, 4*sizeof(float));
else model->bindPose[i].rotation = QuaternionIdentity();
model->bindPose[i].rotation = QuaternionNormalize(model->bindPose[i].rotation);
if (data->nodes[i].has_scale) memcpy(&model->bindPose[i].scale, data->nodes[i].scale, 3*sizeof(float));
else model->bindPose[i].scale = Vector3One();
}
{
bool* completedBones = RL_CALLOC(model->boneCount, sizeof(bool));
int numberCompletedBones = 0;
while (numberCompletedBones < model->boneCount)
{
for (int i = 0; i < model->boneCount; i++)
{
if (completedBones[i]) continue;
if (model->bones[i].parent < 0)
{
completedBones[i] = true;
numberCompletedBones++;
continue;
}
if (!completedBones[model->bones[i].parent]) continue;
Transform* currentTransform = &model->bindPose[i];
BoneInfo* currentBone = &model->bones[i];
int root = currentBone->parent;
if (root >= model->boneCount) root = 0;
Transform* parentTransform = &model->bindPose[root];
currentTransform->rotation = QuaternionMultiply(parentTransform->rotation, currentTransform->rotation);
currentTransform->translation = Vector3RotateByQuaternion(currentTransform->translation, parentTransform->rotation);
currentTransform->translation = Vector3Add(currentTransform->translation, parentTransform->translation);
currentTransform->scale = Vector3Multiply(currentTransform->scale, parentTransform->scale);
completedBones[i] = true;
numberCompletedBones++;
}
}
RL_FREE(completedBones);
}
}
static void LoadGLTFMaterial(Model *model, const char *fileName, const cgltf_data *data)
{
for (int i = 0; i < model->materialCount - 1; i++)
{
model->materials[i] = LoadMaterialDefault();
Color tint = (Color){ 255, 255, 255, 255 };
const char *texPath = GetDirectoryPath(fileName);
// Ensure material follows raylib support for PBR (metallic/roughness flow)
if (data->materials[i].has_pbr_metallic_roughness)
{
tint.r = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[0]*255);
tint.g = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[1]*255);
tint.b = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[2]*255);
tint.a = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[3]*255);
model->materials[i].maps[MATERIAL_MAP_ALBEDO].color = tint;
if (data->materials[i].pbr_metallic_roughness.base_color_texture.texture)
{
Image albedo = LoadImageFromCgltfImage(data->materials[i].pbr_metallic_roughness.base_color_texture.texture->image, texPath, tint);
model->materials[i].maps[MATERIAL_MAP_ALBEDO].texture = LoadTextureFromImage(albedo);
UnloadImage(albedo);
}
tint = WHITE; // Set tint to white after it's been used by Albedo
if (data->materials[i].pbr_metallic_roughness.metallic_roughness_texture.texture)
{
Image metallicRoughness = LoadImageFromCgltfImage(data->materials[i].pbr_metallic_roughness.metallic_roughness_texture.texture->image, texPath, tint);
model->materials[i].maps[MATERIAL_MAP_ROUGHNESS].texture = LoadTextureFromImage(metallicRoughness);
float roughness = data->materials[i].pbr_metallic_roughness.roughness_factor;
model->materials[i].maps[MATERIAL_MAP_ROUGHNESS].value = roughness;
float metallic = data->materials[i].pbr_metallic_roughness.metallic_factor;
model->materials[i].maps[MATERIAL_MAP_METALNESS].value = metallic;
UnloadImage(metallicRoughness);
}
if (data->materials[i].normal_texture.texture)
{
Image normalImage = LoadImageFromCgltfImage(data->materials[i].normal_texture.texture->image, texPath, tint);
model->materials[i].maps[MATERIAL_MAP_NORMAL].texture = LoadTextureFromImage(normalImage);
UnloadImage(normalImage);
}
if (data->materials[i].occlusion_texture.texture)
{
Image occulsionImage = LoadImageFromCgltfImage(data->materials[i].occlusion_texture.texture->image, texPath, tint);
model->materials[i].maps[MATERIAL_MAP_OCCLUSION].texture = LoadTextureFromImage(occulsionImage);
UnloadImage(occulsionImage);
}
if (data->materials[i].emissive_texture.texture)
{
Image emissiveImage = LoadImageFromCgltfImage(data->materials[i].emissive_texture.texture->image, texPath, tint);
model->materials[i].maps[MATERIAL_MAP_EMISSION].texture = LoadTextureFromImage(emissiveImage);
tint.r = (unsigned char)(data->materials[i].emissive_factor[0]*255);
tint.g = (unsigned char)(data->materials[i].emissive_factor[1]*255);
tint.b = (unsigned char)(data->materials[i].emissive_factor[2]*255);
model->materials[i].maps[MATERIAL_MAP_EMISSION].color = tint;
UnloadImage(emissiveImage);
}
}
}
model->materials[model->materialCount - 1] = LoadMaterialDefault();
}
static void BindGLTFPrimitiveToBones(Model* model, const cgltf_data* data, int primitiveIndex)
{
for (unsigned int nodeId = 0; nodeId < data->nodes_count; nodeId++)
{
if (data->nodes[nodeId].mesh == &(data->meshes[primitiveIndex]))
{
if (model->meshes[primitiveIndex].boneIds == NULL)
{
model->meshes[primitiveIndex].boneIds = RL_CALLOC(4*model->meshes[primitiveIndex].vertexCount, sizeof(int));
model->meshes[primitiveIndex].boneWeights = RL_CALLOC(4*model->meshes[primitiveIndex].vertexCount, sizeof(float));
for (int b = 0; b < 4*model->meshes[primitiveIndex].vertexCount; b++)
{
if (b % 4 == 0)
{
model->meshes[primitiveIndex].boneIds[b] = nodeId;
model->meshes[primitiveIndex].boneWeights[b] = 1.0f;
}
else
{
model->meshes[primitiveIndex].boneIds[b] = 0;
model->meshes[primitiveIndex].boneWeights[b] = 0.0f;
}
}
}
}
}
}
// LoadGLTF loads in animation data from given filename
static ModelAnimation *LoadGLTFModelAnimations(const char *fileName, int *animCount)
{
/***********************************************************************************
Function implemented by Hristo Stamenov (@object71)
Features:
- Supports .gltf and .glb files
Some restrictions (not exhaustive):
- ...
*************************************************************************************/
// glTF file loading
unsigned int dataSize = 0;
unsigned char *fileData = LoadFileData(fileName, &dataSize);
ModelAnimation *animations = NULL;
if (fileData == NULL) return animations;
// glTF data loading
cgltf_options options = { 0 };
cgltf_data *data = NULL;
cgltf_result result = cgltf_parse(&options, fileData, dataSize, &data);
if (result == cgltf_result_success)
{
TRACELOG(LOG_INFO, "MODEL: [%s] glTF animations (%s) count: %i", fileName, (data->file_type == 2)? "glb" :
"gltf", data->animations_count);
result = cgltf_load_buffers(&options, data, fileName);
if (result != cgltf_result_success) TRACELOG(LOG_WARNING, "MODEL: [%s] unable to load glTF animations data", fileName);
animations = RL_MALLOC(data->animations_count*sizeof(ModelAnimation));
*animCount = (int)data->animations_count;
for (unsigned int a = 0; a < data->animations_count; a++)
{
// gltf animation consists of the following structures:
// - nodes - bones are part of the node system (the whole node system is animatable)
// - channels - single transformation type on a single bone
// - node - animatable node
// - transformation type (path) - translation, rotation, scale
// - sampler - animation samples
// - input - points in time this transformation happens
// - output - the transformation amount at the given input points in time
// - interpolation - the type of interpolation to use between the frames
cgltf_animation *animation = data->animations + a;
ModelAnimation *output = animations + a;
// 30 frames sampled per second
const float timeStep = (1.0f/60.0f);
float animationDuration = 0.0f;
// Getting the max animation time to consider for animation duration
for (unsigned int i = 0; i < animation->channels_count; i++)
{
cgltf_animation_channel* channel = animation->channels + i;
int frameCounts = (int)channel->sampler->input->count;
float lastFrameTime = 0.0f;
if (ReadGLTFValue(channel->sampler->input, frameCounts - 1, &lastFrameTime))
{
animationDuration = fmaxf(lastFrameTime, animationDuration);
}
}
output->frameCount = (int)(animationDuration/timeStep);
output->boneCount = (int)data->nodes_count;
output->bones = RL_MALLOC(output->boneCount*sizeof(BoneInfo));
output->framePoses = RL_MALLOC(output->frameCount*sizeof(Transform *));
// output->framerate = // TODO: Use framerate instead of const timestep
// Name and parent bones
for (int j = 0; j < output->boneCount; j++)
{
strcpy(output->bones[j].name, data->nodes[j].name == 0 ? "ANIMJOINT" : data->nodes[j].name);
output->bones[j].parent = (data->nodes[j].parent != NULL) ? (int)(data->nodes[j].parent - data->nodes) : -1;
}
// Allocate data for frames
// Initiate with zero bone translations
for (int frame = 0; frame < output->frameCount; frame++)
{
output->framePoses[frame] = RL_MALLOC(output->boneCount*sizeof(Transform));
for (unsigned int i = 0; i < output->boneCount; i++)
{
if (data->nodes[i].has_translation) memcpy(&output->framePoses[frame][i].translation, data->nodes[i].translation, 3*sizeof(float));
else output->framePoses[frame][i].translation = Vector3Zero();
if (data->nodes[i].has_rotation) memcpy(&output->framePoses[frame][i], data->nodes[i].rotation, 4*sizeof(float));
else output->framePoses[frame][i].rotation = QuaternionIdentity();
output->framePoses[frame][i].rotation = QuaternionNormalize(output->framePoses[frame][i].rotation);
if (data->nodes[i].has_scale) memcpy(&output->framePoses[frame][i].scale, data->nodes[i].scale, 3*sizeof(float));
else output->framePoses[frame][i].scale = Vector3One();
}
}
// for each single transformation type on single bone
for (unsigned int channelId = 0; channelId < animation->channels_count; channelId++)
{
cgltf_animation_channel* channel = animation->channels + channelId;
cgltf_animation_sampler* sampler = channel->sampler;
int boneId = (int)(channel->target_node - data->nodes);
for (int frame = 0; frame < output->frameCount; frame++)
{
bool shouldSkipFurtherTransformation = true;
int outputMin = 0;
int outputMax = 0;
float frameTime = frame*timeStep;
float lerpPercent = 0.0f;
// For this transformation:
// getting between which input values the current frame time position
// and also what is the percent to use in the linear interpolation later
for (unsigned int j = 0; j < sampler->input->count; j++)
{
float inputFrameTime;
if (ReadGLTFValue(sampler->input, j, &inputFrameTime))
{
if (frameTime < inputFrameTime)
{
shouldSkipFurtherTransformation = false;
outputMin = (j == 0) ? 0 : j - 1;
outputMax = j;
float previousInputTime = 0.0f;
if (ReadGLTFValue(sampler->input, outputMin, &previousInputTime))
{
if ((inputFrameTime - previousInputTime) != 0)
{
lerpPercent = (frameTime - previousInputTime)/(inputFrameTime - previousInputTime);
}
}
break;
}
}
else break;
}
// If the current transformation has no information for the current frame time point
if (shouldSkipFurtherTransformation) continue;
if (channel->target_path == cgltf_animation_path_type_translation)
{
Vector3 translationStart;
Vector3 translationEnd;
float values[3];
bool success = ReadGLTFValue(sampler->output, outputMin, values);
translationStart.x = values[0];
translationStart.y = values[1];
translationStart.z = values[2];
success = ReadGLTFValue(sampler->output, outputMax, values) || success;
translationEnd.x = values[0];
translationEnd.y = values[1];
translationEnd.z = values[2];
if (success) output->framePoses[frame][boneId].translation = Vector3Lerp(translationStart, translationEnd, lerpPercent);
}
if (channel->target_path == cgltf_animation_path_type_rotation)
{
Vector4 rotationStart;
Vector4 rotationEnd;
float values[4];
bool success = ReadGLTFValue(sampler->output, outputMin, &values);
rotationStart.x = values[0];
rotationStart.y = values[1];
rotationStart.z = values[2];
rotationStart.w = values[3];
success = ReadGLTFValue(sampler->output, outputMax, &values) || success;
rotationEnd.x = values[0];
rotationEnd.y = values[1];
rotationEnd.z = values[2];
rotationEnd.w = values[3];
if (success)
{
output->framePoses[frame][boneId].rotation = QuaternionNlerp(rotationStart, rotationEnd, lerpPercent);
}
}
if (channel->target_path == cgltf_animation_path_type_scale)
{
Vector3 scaleStart;
Vector3 scaleEnd;
float values[3];
bool success = ReadGLTFValue(sampler->output, outputMin, &values);
scaleStart.x = values[0];
scaleStart.y = values[1];
scaleStart.z = values[2];
success = ReadGLTFValue(sampler->output, outputMax, &values) || success;
scaleEnd.x = values[0];
scaleEnd.y = values[1];
scaleEnd.z = values[2];
if (success) output->framePoses[frame][boneId].scale = Vector3Lerp(scaleStart, scaleEnd, lerpPercent);
}
}
}
// Build frameposes
for (int frame = 0; frame < output->frameCount; frame++)
{
bool *completedBones = RL_CALLOC(output->boneCount, sizeof(bool));
int numberCompletedBones = 0;
while (numberCompletedBones < output->boneCount)
{
for (int i = 0; i < output->boneCount; i++)
{
if (completedBones[i]) continue;
if (output->bones[i].parent < 0)
{
completedBones[i] = true;
numberCompletedBones++;
continue;
}
if (!completedBones[output->bones[i].parent]) continue;
output->framePoses[frame][i].rotation = QuaternionMultiply(output->framePoses[frame][output->bones[i].parent].rotation, output->framePoses[frame][i].rotation);
output->framePoses[frame][i].translation = Vector3RotateByQuaternion(output->framePoses[frame][i].translation, output->framePoses[frame][output->bones[i].parent].rotation);
output->framePoses[frame][i].translation = Vector3Add(output->framePoses[frame][i].translation, output->framePoses[frame][output->bones[i].parent].translation);
output->framePoses[frame][i].scale = Vector3Multiply(output->framePoses[frame][i].scale, output->framePoses[frame][output->bones[i].parent].scale);
completedBones[i] = true;
numberCompletedBones++;
}
}
RL_FREE(completedBones);
}
}
cgltf_free(data);
}
else TRACELOG(LOG_WARNING, ": [%s] Failed to load glTF data", fileName);
RL_FREE(fileData);
return animations;
}
void LoadGLTFMesh(cgltf_data* data, cgltf_mesh* mesh, Model* outModel, Matrix currentTransform, int* primitiveIndex, const char *fileName)
{
for (unsigned int p = 0; p < mesh->primitives_count; p++)
{
for (unsigned int j = 0; j < mesh->primitives[p].attributes_count; j++)
{
if (mesh->primitives[p].attributes[j].type == cgltf_attribute_type_position)
{
cgltf_accessor *acc = mesh->primitives[p].attributes[j].data;
outModel->meshes[(*primitiveIndex)].vertexCount = (int)acc->count;
int bufferSize = outModel->meshes[(*primitiveIndex)].vertexCount*3*sizeof(float);
outModel->meshes[(*primitiveIndex)].animVertices = RL_MALLOC(bufferSize);
outModel->meshes[(*primitiveIndex)].vertices = ReadGLTFValuesAs(acc, cgltf_component_type_r_32f, false);
// Transform using the nodes matrix attributes
for (unsigned int v = 0; v < outModel->meshes[(*primitiveIndex)].vertexCount; v++)
{
Vector3 vertex = {
outModel->meshes[(*primitiveIndex)].vertices[(v*3 + 0)],
outModel->meshes[(*primitiveIndex)].vertices[(v*3 + 1)],
outModel->meshes[(*primitiveIndex)].vertices[(v*3 + 2)] };
vertex = Vector3Transform(vertex, currentTransform);
outModel->meshes[(*primitiveIndex)].vertices[(v*3 + 0)] = vertex.x;
outModel->meshes[(*primitiveIndex)].vertices[(v*3 + 1)] = vertex.y;
outModel->meshes[(*primitiveIndex)].vertices[(v*3 + 2)] = vertex.z;
}
memcpy(outModel->meshes[(*primitiveIndex)].animVertices, outModel->meshes[(*primitiveIndex)].vertices, bufferSize);
}
else if (mesh->primitives[p].attributes[j].type == cgltf_attribute_type_normal)
{
cgltf_accessor *acc = mesh->primitives[p].attributes[j].data;
int bufferSize = (int)(acc->count*3*sizeof(float));
outModel->meshes[(*primitiveIndex)].animNormals = RL_MALLOC(bufferSize);
outModel->meshes[(*primitiveIndex)].normals = ReadGLTFValuesAs(acc, cgltf_component_type_r_32f, false);
// Transform using the nodes matrix attributes
for (unsigned int v = 0; v < outModel->meshes[(*primitiveIndex)].vertexCount; v++)
{
Vector3 normal = {
outModel->meshes[(*primitiveIndex)].normals[(v*3 + 0)],
outModel->meshes[(*primitiveIndex)].normals[(v*3 + 1)],
outModel->meshes[(*primitiveIndex)].normals[(v*3 + 2)] };
normal = Vector3Transform(normal, currentTransform);
outModel->meshes[(*primitiveIndex)].normals[(v*3 + 0)] = normal.x;
outModel->meshes[(*primitiveIndex)].normals[(v*3 + 1)] = normal.y;
outModel->meshes[(*primitiveIndex)].normals[(v*3 + 2)] = normal.z;
}
memcpy(outModel->meshes[(*primitiveIndex)].animNormals, outModel->meshes[(*primitiveIndex)].normals, bufferSize);
}
else if (mesh->primitives[p].attributes[j].type == cgltf_attribute_type_texcoord)
{
cgltf_accessor *acc = mesh->primitives[p].attributes[j].data;
outModel->meshes[(*primitiveIndex)].texcoords = ReadGLTFValuesAs(acc, cgltf_component_type_r_32f, false);
}
else if (mesh->primitives[p].attributes[j].type == cgltf_attribute_type_joints)
{
cgltf_accessor *acc = mesh->primitives[p].attributes[j].data;
unsigned int boneCount = acc->count;
unsigned int totalBoneWeights = boneCount*4;
outModel->meshes[(*primitiveIndex)].boneIds = RL_MALLOC(totalBoneWeights*sizeof(int));
short *bones = ReadGLTFValuesAs(acc, cgltf_component_type_r_16, false);
for (unsigned int a = 0; a < totalBoneWeights; a++)
{
outModel->meshes[(*primitiveIndex)].boneIds[a] = 0;
if (bones[a] < 0) continue;
cgltf_node* skinJoint = data->skins->joints[bones[a]];
for (unsigned int k = 0; k < data->nodes_count; k++)
{
if (data->nodes + k == skinJoint)
{
outModel->meshes[(*primitiveIndex)].boneIds[a] = k;
break;
}
}
}
RL_FREE(bones);
}
else if (mesh->primitives[p].attributes[j].type == cgltf_attribute_type_weights)
{
cgltf_accessor *acc = mesh->primitives[p].attributes[j].data;
outModel->meshes[(*primitiveIndex)].boneWeights = ReadGLTFValuesAs(acc, cgltf_component_type_r_32f, false);
}
else if (mesh->primitives[p].attributes[j].type == cgltf_attribute_type_color)
{
cgltf_accessor *acc = mesh->primitives[p].attributes[j].data;
outModel->meshes[(*primitiveIndex)].colors = ReadGLTFValuesAs(acc, cgltf_component_type_r_8u, true);
}
}
cgltf_accessor *acc = mesh->primitives[p].indices;
if (acc)
{
outModel->meshes[(*primitiveIndex)].triangleCount = acc->count/3;
outModel->meshes[(*primitiveIndex)].indices = ReadGLTFValuesAs(acc, cgltf_component_type_r_16u, false);
}
else
{
// Unindexed mesh
outModel->meshes[(*primitiveIndex)].triangleCount = outModel->meshes[(*primitiveIndex)].vertexCount/3;
}
if (mesh->primitives[p].material)
{
// Compute the offset
outModel->meshMaterial[(*primitiveIndex)] = (int)(mesh->primitives[p].material - data->materials);
}
else outModel->meshMaterial[(*primitiveIndex)] = outModel->materialCount - 1;
BindGLTFPrimitiveToBones(outModel, data, *primitiveIndex);
(*primitiveIndex) = (*primitiveIndex) + 1;
}
}
void LoadGLTFNode(cgltf_data* data, cgltf_node* node, Model* outModel, Matrix currentTransform, int* primitiveIndex, const char *fileName)
{
Matrix nodeTransform = {
node->matrix[0], node->matrix[4], node->matrix[8], node->matrix[12],
node->matrix[1], node->matrix[5], node->matrix[9], node->matrix[13],
node->matrix[2], node->matrix[6], node->matrix[10], node->matrix[14],
node->matrix[3], node->matrix[7], node->matrix[11], node->matrix[15] };
currentTransform = MatrixMultiply(nodeTransform, currentTransform);
if (node->mesh != NULL) LoadGLTFMesh(data, node->mesh, outModel, currentTransform, primitiveIndex, fileName);
for (unsigned int i = 0; i < node->children_count; i++) LoadGLTFNode(data, node->children[i], outModel, currentTransform, primitiveIndex, fileName);
}
static void GetGLTFPrimitiveCount(cgltf_node* node, int* outCount)
{
if (node->mesh != NULL) *outCount += node->mesh->primitives_count;
for (unsigned int i = 0; i < node->children_count; i++) GetGLTFPrimitiveCount(node->children[i], outCount);
}
#endif