| 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 |
|
|
| 6 |
+ |
#include "copyright.h" |
| 7 |
+ |
|
| 8 |
|
/* |
| 9 |
|
* An octree is expressed as an integer which is either |
| 10 |
|
* an index to eight other nodes, the empty tree, or an index |
| 28 |
|
#define istree(ot) ((ot) > EMPTY) |
| 29 |
|
|
| 30 |
|
#define oseti(ot) (-(ot)-2) /* object set index */ |
| 31 |
< |
#define octbi(ot) ((ot)>>8) /* octree block index */ |
| 32 |
< |
#define octti(ot) (((ot)&0377)<<3)/* octree index in block */ |
| 31 |
> |
#define OCTBLKSIZ 04000 /* octree block size */ |
| 32 |
> |
#define octbi(ot) ((ot)>>11) /* octree block index */ |
| 33 |
> |
#define octti(ot) (((ot)&03777)<<3)/* octree index in block */ |
| 34 |
|
|
| 35 |
|
#ifndef MAXOBLK |
| 36 |
|
#ifdef BIGMEM |
| 37 |
< |
#define MAXOBLK 8191 /* maximum octree block */ |
| 37 |
> |
#define MAXOBLK 32767 /* maximum octree block */ |
| 38 |
|
#else |
| 39 |
|
#define MAXOBLK 4095 /* maximum octree block */ |
| 40 |
|
#endif |
| 44 |
|
|
| 45 |
|
#define octkid(ot,br) (octblock[octbi(ot)][octti(ot)+br]) |
| 46 |
|
|
| 49 |
– |
extern OCTREE octalloc(), combine(), fullnode(); |
| 50 |
– |
|
| 47 |
|
/* |
| 48 |
|
* The cube structure is used to hold an octree and its cubic |
| 49 |
|
* boundaries. |
| 78 |
|
#define O_MISS 0 /* no intersection */ |
| 79 |
|
#define O_HIT 1 /* intersection */ |
| 80 |
|
#define O_IN 2 /* cube contained entirely */ |
| 81 |
+ |
|
| 82 |
+ |
#ifdef NOPROTO |
| 83 |
+ |
|
| 84 |
+ |
extern OCTREE octalloc(); |
| 85 |
+ |
extern void octfree(); |
| 86 |
+ |
extern void octdone(); |
| 87 |
+ |
extern OCTREE combine(); |
| 88 |
+ |
extern void culocate(); |
| 89 |
+ |
extern void cucopy(); |
| 90 |
+ |
extern int incube(); |
| 91 |
+ |
|
| 92 |
+ |
extern int readoct(); |
| 93 |
+ |
|
| 94 |
+ |
#else |
| 95 |
+ |
|
| 96 |
+ |
extern OCTREE octalloc(void); |
| 97 |
+ |
extern void octfree(OCTREE ot); |
| 98 |
+ |
extern void octdone(void); |
| 99 |
+ |
extern OCTREE combine(OCTREE ot); |
| 100 |
+ |
extern void culocate(CUBE *cu, FVECT pt); |
| 101 |
+ |
extern void cucopy(CUBE *cu1, CUBE *cu2); |
| 102 |
+ |
extern int incube(CUBE *cu, FVECT pt); |
| 103 |
+ |
|
| 104 |
+ |
extern int readoct(char *fname, int load, CUBE *scene, char *ofn[]); |
| 105 |
+ |
|
| 106 |
+ |
#endif |
