diff --git a/src/models.c b/src/models.c
index 7b6deb5c6..dff6b224f 100644
--- a/src/models.c
+++ b/src/models.c
@@ -1997,33 +1997,16 @@ static Mesh LoadOBJ(const char *fileName)
}
// Load MTL material data
+// NOTE: Texture map parameters are not supported
static Material LoadMTL(const char *fileName)
{
- Material material = { 0 };
+ #define MAX_BUFFER_SIZE 128
- // TODO: Load mtl file (multiple variations of .mtl format)
- /*
- newmtl string Material newmtl (material name). Begins a new material description.
- Ka float float float Ambient color Ka (red) (green) (blue)
- Kd float float float Diffuse color Kd (red) (green) (blue)
- Ks float float float Specular color Ks (red) (green) (blue)
- Ke float float float Emmisive color
- d float Tr float Dissolve factor. Transparency Tr (alpha). d is inverse of Tr
- Ns int Shininess Ns (specular power). Ranges from 0 to 1000. Specular exponent.
- Ni int Refraction index.
- illum int Illumination model illum (1 / 2); 1 if specular disabled, 2 if specular enabled (lambertian model)
- map_Kd string Texture map_Kd (filename)
- map_Kd string Diffuse color texture map.
- map_Ks string Specular color texture map.
- map_Ka string Ambient color texture map.
- map_Bump string Bump texture map. Alternative: bump string / map_bump string
- map_d string Opacity texture map.
- disp string Displacement map
- refl Reflection type and map
- */
+ Material material = { 0 }; // LoadDefaultMaterial();
- char dataType;
- char comments[200];
+ char buffer[MAX_BUFFER_SIZE];
+ Vector3 color = { 1.0f, 1.0f, 1.0f };
+ char *mapFileName;
FILE *mtlFile;
@@ -2037,7 +2020,132 @@ static Material LoadMTL(const char *fileName)
while(!feof(mtlFile))
{
- fscanf(mtlFile, "%c", &dataType);
+ fgets(buffer, MAX_BUFFER_SIZE, mtlFile);
+
+ switch (buffer[0])
+ {
+ case 'n': // newmtl string Material name. Begins a new material description.
+ {
+ // TODO: Support multiple materials in a single .mtl
+ sscanf(buffer, "newmtl %s", mapFileName);
+
+ TraceLog(INFO, "[%s] Loading material...", mapFileName);
+ }
+ case 'i': // illum int Illumination model
+ {
+ // illum = 1 if specular disabled
+ // illum = 2 if specular enabled (lambertian model)
+ // ...
+ }
+ case 'K': // Ka, Kd, Ks, Ke
+ {
+ switch (buffer[1])
+ {
+ case 'a': // Ka float float float Ambient color (RGB)
+ {
+ sscanf(buffer, "Ka %f %f %f", &color.x, &color.y, &color.z);
+ material.colAmbient.r = (unsigned char)(color.x*255);
+ material.colAmbient.g = (unsigned char)(color.y*255);
+ material.colAmbient.b = (unsigned char)(color.z*255);
+ } break;
+ case 'd': // Kd float float float Diffuse color (RGB)
+ {
+ sscanf(buffer, "Kd %f %f %f", &color.x, &color.y, &color.z);
+ material.colDiffuse.r = (unsigned char)(color.x*255);
+ material.colDiffuse.g = (unsigned char)(color.y*255);
+ material.colDiffuse.b = (unsigned char)(color.z*255);
+ } break;
+ case 's': // Ks float float float Specular color (RGB)
+ {
+ sscanf(buffer, "Ks %f %f %f", &color.x, &color.y, &color.z);
+ material.colSpecular.r = (unsigned char)(color.x*255);
+ material.colSpecular.g = (unsigned char)(color.y*255);
+ material.colSpecular.b = (unsigned char)(color.z*255);
+ } break;
+ case 'e': // Ke float float float Emmisive color (RGB)
+ {
+ // TODO: Support Ke ?
+ } break;
+ default: break;
+ }
+ } break;
+ case 'N': // Ns, Ni
+ {
+ if (buffer[1] == 's') // Ns int Shininess (specular exponent). Ranges from 0 to 1000.
+ {
+ sscanf(buffer, "Ns %i", &material.glossiness);
+ }
+ else if (buffer[1] == 'i') // Ni int Refraction index.
+ {
+ // Not supported...
+ }
+ } break;
+ case 'm': // map_Kd, map_Ks, map_Ka, map_Bump, map_d
+ {
+ switch (buffer[4])
+ {
+ case 'K': // Color texture maps
+ {
+ if (buffer[5] == 'd') // map_Kd string Diffuse color texture map.
+ {
+ sscanf(buffer, "map_Kd %s", mapFileName);
+ if (mapFileName != NULL) material.texDiffuse = LoadTexture(mapFileName);
+ }
+ else if (buffer[5] == 's') // map_Ks string Specular color texture map.
+ {
+ sscanf(buffer, "map_Ks %s", mapFileName);
+ if (mapFileName != NULL) material.texSpecular = LoadTexture(mapFileName);
+ }
+ else if (buffer[5] == 'a') // map_Ka string Ambient color texture map.
+ {
+ // Not supported...
+ }
+ } break;
+ case 'B': // map_Bump string Bump texture map.
+ {
+ sscanf(buffer, "map_Bump %s", mapFileName);
+ if (mapFileName != NULL) material.texNormal = LoadTexture(mapFileName);
+ } break;
+ case 'b': // map_bump string Bump texture map.
+ {
+ sscanf(buffer, "map_bump %s", mapFileName);
+ if (mapFileName != NULL) material.texNormal = LoadTexture(mapFileName);
+ } break;
+ case 'd': // map_d string Opacity texture map.
+ {
+ // Not supported...
+ } break;
+ default: break;
+ }
+ } break;
+ case 'd': // d, disp
+ {
+ if (buffer[1] == ' ') // d float Dissolve factor. d is inverse of Tr
+ {
+ float alpha = 1.0f;
+ sscanf(buffer, "d %f", &alpha);
+ material.colDiffuse.a = (unsigned char)(alpha*255);
+ }
+ else if (buffer[1] == 'i') // disp string Displacement map
+ {
+ // Not supported...
+ }
+ } break;
+ case 'b': // bump string Bump texture map
+ {
+ sscanf(buffer, "bump %s", mapFileName);
+ if (mapFileName != NULL) material.texNormal = LoadTexture(mapFileName);
+ } break;
+ case 'T': // Tr float Transparency Tr (alpha). Tr is inverse of d
+ {
+ float ialpha = 0.0f;
+ sscanf(buffer, "Tr %f", &ialpha);
+ material.colDiffuse.a = (unsigned char)((1.0f - ialpha)*255);
+
+ } break;
+ case 'r': // refl string Reflection texture map
+ default: break;
+ }
}
fclose(mtlFile);