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/* vertex types */
enum {
OBJVGeometric,
OBJVTexture,
OBJVNormal,
OBJVParametric,
OBJNVERT
};
/* element types */
enum {
OBJEPoint,
OBJELine,
OBJEFace,
OBJECurve,
OBJECurve2,
OBJESurface
};
/* grouping types */
enum {
OBJGGlobal,
OBJGSmoothing,
OBJGMerging
};
/* object hash table size */
enum {
OBJHTSIZE = 17
};
typedef union OBJVertex OBJVertex;
typedef struct OBJColor OBJColor;
typedef struct OBJVertexArray OBJVertexArray;
typedef struct OBJIndexArray OBJIndexArray;
typedef struct OBJMaterial OBJMaterial;
typedef struct OBJMaterlist OBJMaterlist;
typedef struct OBJElem OBJElem;
//typedef struct OBJGroup OBJGroup;
typedef struct OBJObject OBJObject;
typedef struct OBJ OBJ;
#pragma varargck type "O" OBJ*
union OBJVertex
{
struct { double x, y, z, w; }; /* geometric */
struct { double u, v, vv; }; /* texture and parametric */
struct { double i, j, k; }; /* normal */
};
struct OBJColor
{
double r, g, b, a;
};
struct OBJVertexArray
{
OBJVertex *verts;
int nvert;
};
struct OBJIndexArray
{
int *indices;
int nindex;
};
struct OBJMaterial
{
char *name;
OBJColor Ka; /* ambient color */
OBJColor Kd; /* diffuse color */
OBJColor Ks; /* specular color */
OBJColor Ke; /* emissive color */
double Ns; /* specular highlight */
double Ni; /* index of refraction */
double d; /* dissolution factor (opacity) */
int illum; /* illumination model */
Memimage *map_Kd; /* color texture file */
Memimage *map_Ks; /* specular texture file */
Memimage *norm; /* normal texture file */
OBJMaterial *next;
};
struct OBJMaterlist
{
char *filename;
OBJMaterial *mattab[OBJHTSIZE];
};
struct OBJElem
{
OBJIndexArray indextab[OBJNVERT];
int type;
OBJMaterial *mtl;
OBJElem *next;
};
//struct OBJGroup
//{
// char *name;
// int type;
// OBJElem *elem0;
// OBJGroup *next;
//};
//struct OBJObject
//{
// char *name;
// OBJGroup *grptab[OBJHTSIZE];
// OBJObject *next;
//};
struct OBJObject
{
char *name;
OBJElem *child;
OBJElem *lastone;
OBJObject *next;
};
struct OBJ
{
OBJVertexArray vertdata[OBJNVERT];
OBJObject *objtab[OBJHTSIZE];
OBJMaterlist *materials;
};
OBJ *objparse(char*);
void objfree(OBJ*);
OBJMaterlist *objmtlparse(char*);
void objmtlfree(OBJMaterlist*);
int OBJMaterlistfmt(Fmt*);
int OBJfmt(Fmt*);
void OBJfmtinstall(void);
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