| 4 |
|
* |
| 5 |
|
* Include after standard.h, object.h and octree.h |
| 6 |
|
*/ |
| 7 |
+ |
#ifndef _RAD_MESH_H_ |
| 8 |
+ |
#define _RAD_MESH_H_ |
| 9 |
+ |
#ifdef __cplusplus |
| 10 |
+ |
extern "C" { |
| 11 |
+ |
#endif |
| 12 |
|
|
| 13 |
|
#include "copyright.h" |
| 14 |
|
|
| 15 |
+ |
#include "lookup.h" |
| 16 |
+ |
|
| 17 |
|
#ifndef uint4 |
| 18 |
|
#define uint4 unsigned int4 |
| 19 |
|
#endif |
| 33 |
|
* never generates 0, so we can use this for unspecified normals. |
| 34 |
|
* |
| 35 |
|
* Vertex ID's are encoded using the bottom 8 bits of a 4-byte integer |
| 36 |
< |
* to index a vertex in a patch indicated by the 20 bits above (9-29). |
| 37 |
< |
* For triangle ID's, the top 10 bits (11-31) indicate the patch, and |
| 38 |
< |
* the 10th bit indicates whether the triangle joins patches. |
| 36 |
> |
* to index a vertex in a patch indicated by the 22 bits above (8-29). |
| 37 |
> |
* For triangle ID's, the top 22 bits (10-31) indicate the patch, and |
| 38 |
> |
* the bit 9 (0x200) indicates whether the triangle joins patches. |
| 39 |
|
* If not, then the bottom 9 bits index into the local PTri array. |
| 40 |
< |
* If it's a joiner, then the 9th bit indicates whether the triangle joins |
| 40 |
> |
* If it's a joiner, then the 8th bit indicates whether the triangle joins |
| 41 |
|
* two patches, in which case the bottom 8 bits index the PJoin2 array. |
| 42 |
|
* Otherwise, the bottom 8 bits index the PJoin1 array. |
| 43 |
|
* |
| 47 |
|
* a lot of effort, but it can reduce mesh storage by a factor of 3 |
| 48 |
|
* or more. This is important, as the whole point is to model very |
| 49 |
|
* complicated geometry with this structure, and memory is the main |
| 50 |
< |
* limitation. (We also optimize intersection tests for triangles.) |
| 50 |
> |
* limitation. |
| 51 |
|
*/ |
| 52 |
|
|
| 53 |
|
/* A triangle mesh patch */ |
| 58 |
|
struct PTri { |
| 59 |
|
BYTE v1, v2, v3; /* local vertices */ |
| 60 |
|
} *tri; /* local triangles */ |
| 61 |
+ |
short solemat; /* sole material */ |
| 62 |
+ |
int2 *trimat; /* or local material indices */ |
| 63 |
|
struct PJoin1 { |
| 64 |
|
int4 v1j; /* non-local vertex */ |
| 65 |
+ |
int2 mat; /* material index */ |
| 66 |
|
BYTE v2, v3; /* local vertices */ |
| 67 |
|
} *j1tri; /* joiner triangles */ |
| 68 |
|
struct PJoin2 { |
| 69 |
|
int4 v1j, v2j; /* non-local vertices */ |
| 70 |
+ |
int2 mat; /* material index */ |
| 71 |
|
BYTE v3; /* local vertex */ |
| 72 |
|
} *j2tri; /* double joiner triangles */ |
| 73 |
|
short nverts; /* vertex count */ |
| 83 |
|
int ldflags; /* what we've loaded */ |
| 84 |
|
CUBE mcube; /* bounds and octree */ |
| 85 |
|
FLOAT uvlim[2][2]; /* local coordinate extrema */ |
| 86 |
+ |
OBJECT mat0; /* base material index */ |
| 87 |
+ |
OBJECT nmats; /* number of materials */ |
| 88 |
|
MESHPATCH *patch; /* mesh patch list */ |
| 89 |
|
int npatches; /* number of mesh patches */ |
| 90 |
< |
char *cdata; /* opaque client data pointer */ |
| 90 |
> |
OBJREC *pseudo; /* mesh pseudo objects */ |
| 91 |
> |
LUTAB lut; /* vertex lookup table */ |
| 92 |
|
struct mesh *next; /* next mesh in list */ |
| 93 |
|
} MESH; |
| 94 |
|
|
| 115 |
|
/* mesh format identifier */ |
| 116 |
|
#define MESHFMT "Radiance_tmesh" |
| 117 |
|
/* magic number for mesh files */ |
| 118 |
< |
#define MESHMAGIC ( 0 *MAXOBJSIZ+311) /* increment first value */ |
| 118 |
> |
#define MESHMAGIC ( 1 *MAXOBJSIZ+311) /* increment first value */ |
| 119 |
|
|
| 106 |
– |
#ifdef NOPROTO |
| 120 |
|
|
| 108 |
– |
extern MESH *getmesh(); |
| 109 |
– |
extern INSTANCE *getmeshinst(); |
| 110 |
– |
extern int getmeshtrivid(); |
| 111 |
– |
extern int getmeshvert(); |
| 112 |
– |
extern int getmeshtri(); |
| 113 |
– |
extern int4 addmeshvert(); |
| 114 |
– |
extern OBJECT addmeshtri(); |
| 115 |
– |
extern void printmeshstats(); |
| 116 |
– |
extern void freemesh(); |
| 117 |
– |
extern void freemeshinst(); |
| 118 |
– |
extern void readmesh(); |
| 119 |
– |
extern void writemesh(); |
| 120 |
– |
|
| 121 |
– |
#else |
| 122 |
– |
|
| 121 |
|
extern MESH *getmesh(char *mname, int flags); |
| 122 |
|
extern MESHINST *getmeshinst(OBJREC *o, int flags); |
| 123 |
< |
extern int getmeshtrivid(int4 tvid[3], MESH *mp, OBJECT ti); |
| 123 |
> |
extern int getmeshtrivid(int4 tvid[3], OBJECT *mo, |
| 124 |
> |
MESH *mp, OBJECT ti); |
| 125 |
|
extern int getmeshvert(MESHVERT *vp, MESH *mp, int4 vid, int what); |
| 126 |
< |
extern int getmeshtri(MESHVERT tv[3], MESH *mp, OBJECT ti, int what); |
| 126 |
> |
extern int getmeshtri(MESHVERT tv[3], OBJECT *mo, |
| 127 |
> |
MESH *mp, OBJECT ti, int what); |
| 128 |
> |
extern OBJREC *getmeshpseudo(MESH *mp, OBJECT mo); |
| 129 |
|
extern int4 addmeshvert(MESH *mp, MESHVERT *vp); |
| 130 |
< |
extern OBJECT addmeshtri(MESH *mp, MESHVERT tv[3]); |
| 130 |
> |
extern OBJECT addmeshtri(MESH *mp, MESHVERT tv[3], OBJECT mo); |
| 131 |
> |
extern char *checkmesh(MESH *mp); |
| 132 |
|
extern void printmeshstats(MESH *ms, FILE *fp); |
| 133 |
|
extern void freemesh(MESH *ms); |
| 134 |
|
extern void freemeshinst(OBJREC *o); |
| 135 |
|
extern void readmesh(MESH *mp, char *path, int flags); |
| 136 |
|
extern void writemesh(MESH *mp, FILE *fp); |
| 137 |
|
|
| 138 |
< |
#endif /* NOPROTO */ |
| 138 |
> |
|
| 139 |
> |
#ifdef __cplusplus |
| 140 |
> |
} |
| 141 |
> |
#endif |
| 142 |
> |
#endif /* _RAD_MESH_H_ */ |
| 143 |
> |
|
