| 10 |
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#ifndef _OBJUTIL_H_ |
| 11 |
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#define _OBJUTIL_H_ |
| 12 |
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|
| 13 |
+ |
#ifdef __cplusplus |
| 14 |
+ |
extern "C" { |
| 15 |
+ |
#endif |
| 16 |
+ |
|
| 17 |
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#ifndef DUP_CHECK_REVERSE |
| 18 |
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#define DUP_CHECK_REVERSE 1 /* eliminate flipped duplicates */ |
| 19 |
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#endif |
| 21 |
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#define POPEN_SUPPORT 1 /* support "!command" i/o */ |
| 22 |
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#endif |
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/* face flags */ |
| 24 |
< |
#define FACE_SELECTED 01 |
| 25 |
< |
#define FACE_DEGENERATE 02 |
| 26 |
< |
#define FACE_DUPLICATE 04 |
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> |
#define FACE_DEGENERATE 01 |
| 25 |
> |
#define FACE_DUPLICATE 02 |
| 26 |
> |
#define FACE_SELECTED 04 |
| 27 |
> |
#define FACE_CUSTOM(n) (FACE_SELECTED<<(n)) |
| 28 |
> |
#define FACE_RESERVED (1<<15) |
| 29 |
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|
| 30 |
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struct Face; /* forward declaration */ |
| 31 |
|
|
| 32 |
+ |
typedef int VNDX[3]; /* vertex indices (point,map,normal) */ |
| 33 |
+ |
|
| 34 |
+ |
/* Structure to hold vertex indices and link back to face list */ |
| 35 |
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typedef struct { |
| 36 |
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int vid; /* vertex id */ |
| 37 |
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int tid; /* texture id */ |
| 84 |
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int nfaces; /* count of faces */ |
| 85 |
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} Scene; |
| 86 |
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|
| 78 |
– |
#ifdef __cplusplus |
| 79 |
– |
extern "C" { |
| 80 |
– |
#endif |
| 81 |
– |
|
| 87 |
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/* Allocate a new scene holder */ |
| 88 |
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Scene * newScene(void); |
| 89 |
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|
| 90 |
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/* Add a .OBJ file to a scene */ |
| 91 |
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Scene * loadOBJ(Scene *sc, const char *fspec); |
| 92 |
|
|
| 93 |
< |
/* Duplicate a scene */ |
| 94 |
< |
Scene * dupScene(const Scene *sc); |
| 93 |
> |
/* Duplicate a scene, optionally selecting faces */ |
| 94 |
> |
Scene * dupScene(const Scene *sc, int flreq, int flexc); |
| 95 |
|
|
| 96 |
+ |
/* Add one scene to another, not checking for redundancies */ |
| 97 |
+ |
int addScene(Scene *scdst, const Scene *scsrc); |
| 98 |
+ |
|
| 99 |
|
/* Transform entire scene */ |
| 100 |
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int xfScene(Scene *sc, int xac, char *xav[]); |
| 101 |
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int xfmScene(Scene *sc, const char *xfm); |
| 103 |
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/* Add a descriptive comment */ |
| 104 |
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void addComment(Scene *sc, const char *comment); |
| 105 |
|
|
| 106 |
+ |
/* Find index for comment containing the given string (starting from n) */ |
| 107 |
+ |
int findComment(Scene *sc, const char *match, int n); |
| 108 |
+ |
|
| 109 |
|
/* Clear comments */ |
| 110 |
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void clearComments(Scene *sc); |
| 111 |
|
|
| 163 |
|
int changeMaterial(Scene *sc, const char *mname, |
| 164 |
|
int flreq, int flexc); |
| 165 |
|
|
| 166 |
+ |
/* Add a vertex to our scene, returning index */ |
| 167 |
+ |
int addVertex(Scene *sc, double x, double y, double z); |
| 168 |
+ |
|
| 169 |
+ |
/* Add a texture coordinate to our scene, returning index */ |
| 170 |
+ |
int addTexture(Scene *sc, double u, double v); |
| 171 |
+ |
|
| 172 |
+ |
/* Add a surface normal to our scene, returning index */ |
| 173 |
+ |
int addNormal(Scene *sc, double xn, double yn, double zn); |
| 174 |
+ |
|
| 175 |
+ |
/* Set current group (sc->lastgrp) to given ID */ |
| 176 |
+ |
void setGroup(Scene *sc, const char *nm); |
| 177 |
+ |
|
| 178 |
+ |
/* Set current material (sc->lastmat) to given ID */ |
| 179 |
+ |
void setMaterial(Scene *sc, const char *nm); |
| 180 |
+ |
|
| 181 |
+ |
/* Add a new face to our scene, using current group and material */ |
| 182 |
+ |
Face * addFace(Scene *sc, VNDX vid[], int nv); |
| 183 |
+ |
|
| 184 |
+ |
/* Convert all faces with > 3 vertices to triangles */ |
| 185 |
+ |
int triangulateScene(Scene *sc); |
| 186 |
+ |
|
| 187 |
+ |
/* Delete unreferenced vertices, normals, texture coords */ |
| 188 |
+ |
void deleteUnreferenced(Scene *sc); |
| 189 |
+ |
|
| 190 |
|
/* Free a scene */ |
| 191 |
|
void freeScene(Scene *sc); |
| 192 |
|
|
| 199 |
|
extern char *emalloc(unsigned int n); |
| 200 |
|
extern char *ecalloc(unsigned int ne, unsigned int n); |
| 201 |
|
extern char *erealloc(char *cp, unsigned int n); |
| 202 |
< |
extern void efree(char *cp); |
| 202 |
> |
extern void efree(char *cp); |
| 203 |
> |
|
| 204 |
> |
#define getGroupID(sc,nm) findName(nm, (const char **)(sc)->grpname, (sc)->ngrps) |
| 205 |
> |
#define getMaterialID(sc,nm) findName(nm, (const char **)(sc)->matname, (sc)->nmats) |
| 206 |
|
|
| 207 |
|
#define CHUNKSIZ 128 /* object allocation chunk size */ |
| 208 |
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|
