// Filename:-	md3_format.h
//
// 


#ifndef MD3_FORMAT_H
#define MD3_FORMAT_H




#define MD3_IDENT			(('3'<<24)+('P'<<16)+('D'<<8)+'I')
#define MD3_VERSION			15

// limits
#define MD3_MAX_LODS		3
#define	MD3_MAX_TRIANGLES	8192	// per surface
#define MD3_MAX_VERTS		4096	// per surface
#define MD3_MAX_SHADERS		256		// per surface
#define MD3_MAX_FRAMES		1024	// per model
#define	MD3_MAX_SURFACES	32		// per model
#define MD3_MAX_TAGS		16		// per frame

// vertex scales
#define	MD3_XYZ_SCALE		(1.0/64)

typedef struct md3Frame_s {
	vec3_t		bounds[2];
	vec3_t		localOrigin;
	float		radius;
	char		name[16];
} md3Frame_t;

typedef struct md3Tag_s {
	char		name[MAX_QPATH];	// tag name
	vec3_t		origin;
	vec3_t		axis[3];
} md3Tag_t;

/*
** md3Surface_t
**
** CHUNK			SIZE
** header			sizeof( md3Surface_t )
** shaders			sizeof( md3Shader_t ) * numShaders
** triangles[0]		sizeof( md3Triangle_t ) * numTriangles
** st				sizeof( md3St_t ) * numVerts
** XyzNormals		sizeof( md3XyzNormal_t ) * numVerts * numFrames
*/
typedef struct {
	int		ident;				// 

	char	name[MAX_QPATH];	// polyset name

	int		flags;
	int		numFrames;			// all surfaces in a model should have the same

	int		numShaders;			// all surfaces in a model should have the same
	int		numVerts;

	int		numTriangles;
	int		ofsTriangles;

	int		ofsShaders;			// offset from start of md3Surface_t
	int		ofsSt;				// texture coords are common for all frames
	int		ofsXyzNormals;		// numVerts * numFrames

	int		ofsEnd;				// next surface follows
} md3Surface_t;

typedef struct {
	char			name[MAX_QPATH];
	int				shaderIndex;	// for in-game use
} md3Shader_t;

typedef struct {
	int			indexes[3];
} md3Triangle_t;

typedef struct {
	float		st[2];
} md3St_t;

typedef struct {
	short		xyz[3];
	short		normal;
} md3XyzNormal_t;

typedef struct {
	int			ident;
	int			version;

	char		name[MAX_QPATH];	// model name

	int			flags;

	int			numFrames;
	int			numTags;			
	int			numSurfaces;

	int			numSkins;

	int			ofsFrames;			// offset for first frame
	int			ofsTags;			// numFrames * numTags
	int			ofsSurfaces;		// first surface, others follow

	int			ofsEnd;				// end of file
} md3Header_t;




#endif	// #ifndef MD3_FORMAT_H



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