| 1 |
< |
/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
| 1 |
> |
/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
| 2 |
|
|
| 3 |
|
/* SCCSid "$SunId$ SGI" */ |
| 4 |
|
|
| 14 |
|
#ifndef HDMAX |
| 15 |
|
#define HDMAX 128 /* maximum active holodeck sections */ |
| 16 |
|
#endif |
| 17 |
– |
#ifndef int2 |
| 18 |
– |
#define int2 short |
| 19 |
– |
#endif |
| 20 |
– |
#ifndef int4 |
| 21 |
– |
#define int4 long |
| 22 |
– |
#endif |
| 17 |
|
|
| 18 |
|
#define DCINF (unsigned)((1L<<16)-1) /* special value for infinity */ |
| 19 |
|
#define DCLIN (unsigned)(1L<<11) /* linear depth limit */ |
| 20 |
|
|
| 21 |
|
typedef struct { |
| 22 |
|
BYTE r[2][2]; /* ray direction index */ |
| 23 |
< |
COLR v; /* value */ |
| 24 |
< |
unsigned int2 d; /* depth code */ |
| 25 |
< |
} RAYVAL; /* ray value (from second wall) */ |
| 23 |
> |
COLR v; /* color value */ |
| 24 |
> |
unsigned int2 d; /* depth code (from entry wall) */ |
| 25 |
> |
} RAYVAL; /* ray value */ |
| 26 |
|
|
| 27 |
|
/* |
| 28 |
|
* Walls are ordered: X0 X1 X2 WN |
| 67 |
|
int fd; /* file descriptor */ |
| 68 |
|
short dirty; /* beam index needs update to file */ |
| 69 |
|
double tlin; /* linear range for depth encoding */ |
| 70 |
< |
FVECT wn[3]; /* wall normals (derived) */ |
| 71 |
< |
double wg[3]; /* wall grid multipliers (derived) */ |
| 78 |
< |
double wo[6]; /* wall offsets (derived) */ |
| 70 |
> |
FVECT wg[3]; /* wall grid vectors (derived) */ |
| 71 |
> |
double wo[6]; /* wall grid offsets (derived) */ |
| 72 |
|
int wi[6]; /* wall super-indices (derived) */ |
| 73 |
|
char *priv; /* pointer to private client data */ |
| 74 |
|
BEAM **bl; /* beam pointers (memory cache) */ |
| 75 |
|
BEAMI bi[1]; /* beam index (extends struct) */ |
| 76 |
|
} HOLO; /* holodeck section */ |
| 77 |
|
|
| 78 |
< |
#define nbeams(hp) (2*((hp)->wi[5]-1)) |
| 78 |
> |
typedef struct { |
| 79 |
> |
HOLO *h; /* pointer to holodeck */ |
| 80 |
> |
int b; /* beam index */ |
| 81 |
> |
} HDBEAMI; /* holodeck beam index */ |
| 82 |
> |
|
| 83 |
> |
#define nbeams(hp) (((hp)->wi[5]-1)<<1) |
| 84 |
|
#define biglob(hp) ((hp)->bi) |
| 85 |
|
#define blglob(hp) (*(hp)->bl) |
| 86 |
|
|
| 87 |
|
#define bnrays(hp,i) ((hp)->bl[i]!=NULL ? (hp)->bl[i]->nrm : (hp)->bi[i].nrd) |
| 88 |
|
|
| 89 |
< |
#define hdflush(hp) (hdfreebeam(hp,0) && hdsync(hp,0)) |
| 90 |
< |
#define hdclobber(hp) (hdkillbeam(hp,0) && hdsync(hp,0)) |
| 89 |
> |
#define hdflush(hp) (hdfreebeam(hp,0), hdsync(hp,0)) |
| 90 |
> |
#define hdclobber(hp) (hdkillbeam(hp,0), hdsync(hp,0)) |
| 91 |
|
|
| 92 |
|
extern HOLO *hdinit(), *hdalloc(); |
| 93 |
|
extern BEAM *hdgetbeam(); |
| 94 |
|
extern RAYVAL *hdnewrays(); |
| 95 |
< |
extern long hdmemuse(), hdfiluse(); |
| 95 |
> |
extern unsigned hdmemuse(); |
| 96 |
> |
extern long hdfiluse(), hdfilen(), hdallocfrag(); |
| 97 |
|
extern double hdray(), hdinter(); |
| 98 |
|
extern unsigned hdcode(); |
| 99 |
+ |
extern int hdfilord(); |
| 100 |
|
|
| 101 |
< |
extern int hdcachesize; /* target cache size (bytes) */ |
| 101 |
> |
extern unsigned hdcachesize; /* target cache size (bytes) */ |
| 102 |
|
extern unsigned long hdclock; /* holodeck system clock */ |
| 103 |
|
extern HOLO *hdlist[HDMAX+1]; /* holodeck pointers (NULL term.) */ |
| 104 |
|
|
| 105 |
|
extern float hd_depthmap[]; /* depth conversion map */ |
| 106 |
|
|
| 107 |
+ |
extern int hdwg0[6]; /* wall grid 0 index */ |
| 108 |
+ |
extern int hdwg1[6]; /* wall grid 1 index */ |
| 109 |
+ |
|
| 110 |
|
#define hddepth(hp,dc) ( (dc) >= DCINF ? FHUGE : \ |
| 111 |
|
(hp)->tlin * ( (dc) >= DCLIN ? \ |
| 112 |
|
hd_depthmap[(dc)-DCLIN] : \ |
| 114 |
|
|
| 115 |
|
#define HOLOFMT "Holodeck" /* file format identifier */ |
| 116 |
|
#define HOLOVERS 0 /* file format version number */ |
| 117 |
< |
#define HOLOMAGIC (327+HOLOVERS) /* file magic number */ |
| 117 |
> |
#define HOLOMAGIC (323+sizeof(long)+8*HOLOVERS) /* file magic number */ |
| 118 |
|
|
| 119 |
|
/* |
| 120 |
|
* A holodeck file consists of an information header terminated by a |
