+// the origin is at 1/64th scale
+// the pitch and yaw are encoded as 8 bits each
+typedef struct md3vertex_s
+{
+ short origin[3];
+ unsigned char pitch;
+ unsigned char yaw;
+}
+md3vertex_t;
+
+// one per frame
+typedef struct md3frameinfo_s
+{
+ float mins[3];
+ float maxs[3];
+ float origin[3];
+ float radius;
+ char name[MD3FRAMENAME];
+}
+md3frameinfo_t;
+
+// one per tag per frame
+typedef struct md3tag_s
+{
+ char name[MD3NAME];
+ float origin[3];
+ float rotationmatrix[9];
+}
+md3tag_t;
+
+// one per shader per mesh
+typedef struct md3shader_s
+{
+ char name[MD3NAME];
+ // engine field (yes this empty int does exist in the file)
+ int shadernum;
+}
+md3shader_t;
+
+// one per mesh per model
+//
+// note that the lump_ offsets in this struct are relative to the beginning
+// of the mesh struct
+//
+// to find the next mesh in the file, you must go to lump_end, which puts you
+// at the beginning of the next mesh
+typedef struct md3mesh_s
+{
+ char identifier[4]; // "IDP3"
+ char name[MD3NAME];
+ int flags;
+ int num_frames;
+ int num_shaders;
+ int num_vertices;
+ int num_triangles;
+ int lump_elements;
+ int lump_shaders;
+ int lump_texcoords;
+ int lump_framevertices;
+ int lump_end;
+}
+md3mesh_t;
+
+// this struct is at the beginning of the md3 file
+//
+// note that the lump_ offsets in this struct are relative to the beginning
+// of the header struct (which is the beginning of the file)
+typedef struct md3modelheader_s
+{
+ char identifier[4]; // "IDP3"
+ int version; // 15
+ char name[MD3NAME];
+ int flags;
+ int num_frames;
+ int num_tags;
+ int num_meshes;
+ int num_skins;
+ int lump_frameinfo;
+ int lump_tags;
+ int lump_meshes;
+ int lump_end;
+}
+md3modelheader_t;
+
+typedef struct aliastag_s
+{
+ char name[MD3NAME];
+ float matrixgl[12];
+}
+aliastag_t;