--- ray/src/common/objutil.h 2020/06/23 19:29:40 2.8 +++ ray/src/common/objutil.h 2021/04/09 15:26:41 2.15 @@ -1,4 +1,4 @@ -/* RCSid $Id: objutil.h,v 2.8 2020/06/23 19:29:40 greg Exp $ */ +/* RCSid $Id: objutil.h,v 2.15 2021/04/09 15:26:41 greg Exp $ */ /* * Declarations for .OBJ file utility * @@ -10,6 +10,10 @@ #ifndef _OBJUTIL_H_ #define _OBJUTIL_H_ +#ifdef __cplusplus +extern "C" { +#endif + #ifndef DUP_CHECK_REVERSE #define DUP_CHECK_REVERSE 1 /* eliminate flipped duplicates */ #endif @@ -17,9 +21,11 @@ #define POPEN_SUPPORT 1 /* support "!command" i/o */ #endif /* face flags */ -#define FACE_SELECTED 01 -#define FACE_DEGENERATE 02 -#define FACE_DUPLICATE 04 +#define FACE_DEGENERATE 01 +#define FACE_DUPLICATE 02 +#define FACE_SELECTED 04 +#define FACE_CUSTOM(n) (FACE_SELECTED<<(n)) +#define FACE_RESERVED (1<<15) struct Face; /* forward declaration */ @@ -78,109 +84,118 @@ typedef struct { int nfaces; /* count of faces */ } Scene; -#ifdef __cplusplus -extern "C" { -#endif - /* Allocate a new scene holder */ -Scene * newScene(void); +extern Scene * newScene(void); /* Add a .OBJ file to a scene */ -Scene * loadOBJ(Scene *sc, const char *fspec); +extern Scene * loadOBJ(Scene *sc, const char *fspec); -/* Duplicate a scene */ -Scene * dupScene(const Scene *sc); +/* Duplicate a scene, optionally selecting faces */ +extern Scene * dupScene(const Scene *sc, int flreq, int flexc); +/* Add one scene to another, not checking for redundancies */ +extern int addScene(Scene *scdst, const Scene *scsrc); + /* Transform entire scene */ -int xfScene(Scene *sc, int xac, char *xav[]); -int xfmScene(Scene *sc, const char *xfm); +extern int xfScene(Scene *sc, int xac, char *xav[]); +extern int xfmScene(Scene *sc, const char *xfm); /* Add a descriptive comment */ -void addComment(Scene *sc, const char *comment); +extern void addComment(Scene *sc, const char *comment); /* Find index for comment containing the given string (starting from n) */ -int findComment(Scene *sc, const char *match, int n); +extern int findComment(Scene *sc, const char *match, int n); /* Clear comments */ -void clearComments(Scene *sc); +extern void clearComments(Scene *sc); /* Write a .OBJ file, return # faces written or -1 on error */ -int toOBJ(Scene *sc, FILE *fp); -int writeOBJ(Scene *sc, const char *fspec); +extern int toOBJ(Scene *sc, FILE *fp); +extern int writeOBJ(Scene *sc, const char *fspec); /* Convert indicated faces to Radiance, return # written or -1 on error */ -int toRadiance(Scene *sc, FILE *fp, int flreq, int flexc); -int writeRadiance(Scene *sc, const char *fspec, +extern int toRadiance(Scene *sc, FILE *fp, int flreq, int flexc); +extern int writeRadiance(Scene *sc, const char *fspec, int flreq, int flexc); /* Compute face area (and normal) */ -double faceArea(const Scene *sc, const Face *f, Normal nrm); +extern double faceArea(const Scene *sc, const Face *f, Normal nrm); /* Eliminate duplicate vertices, return # joined */ -int coalesceVertices(Scene *sc, double eps); +extern int coalesceVertices(Scene *sc, double eps); /* Identify duplicate faces */ -int findDuplicateFaces(Scene *sc); +extern int findDuplicateFaces(Scene *sc); /* Delete indicated faces, return # deleted */ -int deleteFaces(Scene *sc, int flreq, int flexc); +extern int deleteFaces(Scene *sc, int flreq, int flexc); /* Clear face selection */ -void clearSelection(Scene *sc, int set); +extern void clearSelection(Scene *sc, int set); /* Invert face selection */ -void invertSelection(Scene *sc); +extern void invertSelection(Scene *sc); /* Count number of faces selected */ -int numberSelected(Scene *sc); +extern int numberSelected(Scene *sc); /* Select faces by object name (modifies current) */ -void selectGroup(Scene *sc, const char *gname, int invert); +extern void selectGroup(Scene *sc, const char *gname, int invert); /* Select faces by material name (modifies current) */ -void selectMaterial(Scene *sc, const char *mname, int invert); +extern void selectMaterial(Scene *sc, const char *mname, int invert); /* Execute callback on indicated faces */ -int foreachFace(Scene *sc, int (*cb)(Scene *, Face *, void *), +extern int foreachFace(Scene *sc, int (*cb)(Scene *, Face *, void *), int flreq, int flexc, void *c_data); /* Remove texture coordinates from the indicated faces */ -int removeTexture(Scene *sc, int flreq, int flexc); +extern int removeTexture(Scene *sc, int flreq, int flexc); /* Remove surface normals from the indicated faces */ -int removeNormals(Scene *sc, int flreq, int flexc); +extern int removeNormals(Scene *sc, int flreq, int flexc); /* Change group for the indicated faces */ -int changeGroup(Scene *sc, const char *gname, +extern int changeGroup(Scene *sc, const char *gname, int flreq, int flexc); /* Change material for the indicated faces */ -int changeMaterial(Scene *sc, const char *mname, +extern int changeMaterial(Scene *sc, const char *mname, int flreq, int flexc); /* Add a vertex to our scene, returning index */ -int addVertex(Scene *sc, double x, double y, double z); +extern int addVertex(Scene *sc, double x, double y, double z); /* Add a texture coordinate to our scene, returning index */ -int addTexture(Scene *sc, double u, double v); +extern int addTexture(Scene *sc, double u, double v); /* Add a surface normal to our scene, returning index */ -int addNormal(Scene *sc, double xn, double yn, double zn); +extern int addNormal(Scene *sc, double xn, double yn, double zn); /* Set current group (sc->lastgrp) to given ID */ -void setGroup(Scene *sc, const char *nm); +extern void setGroup(Scene *sc, const char *nm); /* Set current material (sc->lastmat) to given ID */ -void setMaterial(Scene *sc, const char *nm); +extern void setMaterial(Scene *sc, const char *nm); /* Add a new face to our scene, using current group and material */ -Face * addFace(Scene *sc, VNDX vid[], int nv); +extern Face * addFace(Scene *sc, VNDX vid[], int nv); +/* Expand bounding box min & max (initialize bbox to all zeroes) */ +extern int growBoundingBox(Scene *sc, double bbox[2][3], + int flreq, int flexc); + +/* Convert all faces with > 3 vertices to triangles */ +extern int triangulateScene(Scene *sc); + +/* Delete unreferenced vertices, normals, texture coords */ +extern void deleteUnreferenced(Scene *sc); + /* Free a scene */ -void freeScene(Scene *sc); +extern void freeScene(Scene *sc); /* Find an existing name in a list of names */ -int findName(const char *nm, const char **nmlist, int n); +extern int findName(const char *nm, const char **nmlist, int n); /* Verbose mode global */ extern int verbose; @@ -188,7 +203,10 @@ extern int verbose; extern char *emalloc(unsigned int n); extern char *ecalloc(unsigned int ne, unsigned int n); extern char *erealloc(char *cp, unsigned int n); -extern void efree(char *cp); +extern void efree(char *cp); + +#define getGroupID(sc,nm) findName(nm, (const char **)(sc)->grpname, (sc)->ngrps) +#define getMaterialID(sc,nm) findName(nm, (const char **)(sc)->matname, (sc)->nmats) #define CHUNKSIZ 128 /* object allocation chunk size */