| 1 |
< |
/* Copyright (c) 1986 Regents of the University of California */ |
| 2 |
< |
|
| 3 |
< |
/* SCCSid "$SunId$ LBL" */ |
| 4 |
< |
|
| 1 |
> |
/* RCSid $Id$ */ |
| 2 |
|
/* |
| 3 |
|
* octree.h - header file for routines using octrees. |
| 7 |
– |
* |
| 8 |
– |
* 7/28/85 |
| 4 |
|
*/ |
| 5 |
+ |
#ifndef _RAD_OCTREE_H_ |
| 6 |
+ |
#define _RAD_OCTREE_H_ |
| 7 |
+ |
#ifdef __cplusplus |
| 8 |
+ |
extern "C" { |
| 9 |
+ |
#endif |
| 10 |
|
|
| 11 |
|
/* |
| 12 |
|
* An octree is expressed as an integer which is either |
| 20 |
|
* < -1: it is an index to a set of objects |
| 21 |
|
*/ |
| 22 |
|
|
| 23 |
< |
typedef int OCTREE; |
| 23 |
> |
#ifndef OCTREE |
| 24 |
> |
#define OCTREE int |
| 25 |
> |
#endif |
| 26 |
|
|
| 27 |
|
#define EMPTY (-1) |
| 28 |
|
|
| 31 |
|
#define istree(ot) ((ot) > EMPTY) |
| 32 |
|
|
| 33 |
|
#define oseti(ot) (-(ot)-2) /* object set index */ |
| 34 |
< |
#define octbi(ot) ((ot)>>8) /* octree block index */ |
| 35 |
< |
#define octti(ot) (((ot)&0377)<<3)/* octree index in block */ |
| 34 |
> |
#define OCTBLKSIZ 04000 /* octree block size */ |
| 35 |
> |
#define octbi(ot) ((ot)>>11) /* octree block index */ |
| 36 |
> |
#define octti(ot) (((ot)&03777)<<3)/* octree index in block */ |
| 37 |
|
|
| 38 |
+ |
#ifndef MAXOBLK |
| 39 |
+ |
#ifdef SMLMEM |
| 40 |
|
#define MAXOBLK 4095 /* maximum octree block */ |
| 41 |
+ |
#else |
| 42 |
+ |
#define MAXOBLK 262143 /* maximum octree block */ |
| 43 |
+ |
#endif |
| 44 |
+ |
#endif |
| 45 |
|
|
| 46 |
|
extern OCTREE *octblock[MAXOBLK]; /* octree blocks */ |
| 47 |
|
|
| 48 |
|
#define octkid(ot,br) (octblock[octbi(ot)][octti(ot)+br]) |
| 49 |
|
|
| 41 |
– |
extern OCTREE octalloc(), combine(), fullnode(); |
| 42 |
– |
|
| 50 |
|
/* |
| 51 |
|
* The cube structure is used to hold an octree and its cubic |
| 52 |
|
* boundaries. |
| 53 |
|
*/ |
| 54 |
|
|
| 55 |
|
typedef struct { |
| 49 |
– |
OCTREE cutree; /* the octree for this cube */ |
| 56 |
|
FVECT cuorg; /* the cube origin */ |
| 57 |
|
double cusize; /* the cube size */ |
| 58 |
+ |
OCTREE cutree; /* the octree for this cube */ |
| 59 |
|
} CUBE; |
| 60 |
|
|
| 61 |
|
extern CUBE thescene; /* the main scene */ |
| 68 |
|
#define IO_FILES 010 /* object file names */ |
| 69 |
|
#define IO_BOUNDS 020 /* octree boundary */ |
| 70 |
|
#define IO_ALL (~0) /* everything */ |
| 71 |
+ |
/* octree format identifier */ |
| 72 |
+ |
#define OCTFMT "Radiance_octree" |
| 73 |
|
/* magic number for octree files */ |
| 74 |
< |
#define OCTMAGIC (283+sizeof(OBJECT)) |
| 74 |
> |
#define MAXOBJSIZ 8 /* maximum sizeof(OBJECT) */ |
| 75 |
> |
#define OCTMAGIC ( 4 *MAXOBJSIZ+251) /* increment first value */ |
| 76 |
|
/* octree node types */ |
| 77 |
|
#define OT_EMPTY 0 |
| 78 |
|
#define OT_FULL 1 |
| 81 |
|
#define O_MISS 0 /* no intersection */ |
| 82 |
|
#define O_HIT 1 /* intersection */ |
| 83 |
|
#define O_IN 2 /* cube contained entirely */ |
| 84 |
+ |
|
| 85 |
+ |
|
| 86 |
+ |
extern OCTREE octalloc(void); |
| 87 |
+ |
extern void octfree(OCTREE ot); |
| 88 |
+ |
extern void octdone(void); |
| 89 |
+ |
extern OCTREE combine(OCTREE ot); |
| 90 |
+ |
extern void culocate(CUBE *cu, FVECT pt); |
| 91 |
+ |
extern int incube(CUBE *cu, FVECT pt); |
| 92 |
+ |
|
| 93 |
+ |
extern int readoct(char *fname, int load, CUBE *scene, char *ofn[]); |
| 94 |
+ |
|
| 95 |
+ |
extern void readscene(FILE *fp, int objsiz); |
| 96 |
+ |
extern void writescene(int firstobj, int nobjs, FILE *fp); |
| 97 |
+ |
|
| 98 |
+ |
|
| 99 |
+ |
#ifdef __cplusplus |
| 100 |
+ |
} |
| 101 |
+ |
#endif |
| 102 |
+ |
#endif /* _RAD_OCTREE_H_ */ |
| 103 |
+ |
|
