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* |
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* 9/29/97 GWLarson |
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*/ |
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#ifndef _RAD_HOLO_H_ |
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#define _RAD_HOLO_H_ |
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|
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#include "standard.h" |
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#include "color.h" |
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|
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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|
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#ifndef HDMAX |
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#define HDMAX 128 /* maximum active holodeck sections */ |
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#endif |
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#define DCLIN (unsigned)(1L<<11) /* linear depth limit */ |
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|
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typedef struct { |
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< |
BYTE r[2][2]; /* ray direction index */ |
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uby8 r[2][2]; /* ray direction index */ |
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COLR v; /* color value */ |
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uint16 d; /* depth code (from entry wall) */ |
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} RAYVAL; /* ray value */ |
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|
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typedef struct { |
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uint32 nrm; /* number of beam rays bundled in memory */ |
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< |
unsigned long tick; /* clock tick for LRU replacement */ |
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> |
uint32 tick; /* clock tick for LRU replacement */ |
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} BEAM; /* followed by nrm RAYVAL's */ |
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|
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#define hdbray(bp) ((RAYVAL *)((bp)+1)) |
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double tlin; /* linear range for depth encoding */ |
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FVECT wg[3]; /* wall grid vectors (derived) */ |
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int wi[6]; /* wall super-indices (derived) */ |
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< |
char *priv; /* pointer to private client data */ |
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> |
void *priv; /* pointer to private client data */ |
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BEAM **bl; /* beam pointers (memory cache) */ |
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BEAMI bi[1]; /* beam index (extends struct) */ |
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} HOLO; /* holodeck section */ |
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#define hdflush(hp) (hdfreebeam(hp,0), hdsync(hp,0)) |
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#define hdclobber(hp) (hdkillbeam(hp,0), hdsync(hp,0)) |
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|
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– |
extern HOLO *hdinit(), *hdalloc(); |
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extern BEAM *hdgetbeam(); |
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extern RAYVAL *hdnewrays(); |
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extern unsigned hdmemuse(); |
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extern off_t hdfiluse(), hdfilen(), hdallocfrag(); |
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extern double hdray(), hdinter(); |
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extern unsigned hdcode(); |
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extern int hdfilord(); |
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|
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#define FF_NEVER 0 /* never free fragments */ |
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#define FF_WRITE 01 /* free fragment on write */ |
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#define FF_ALLOC 02 /* free fragment on ray alloc */ |
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|
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#define HOLOFMT "Holodeck" /* file format identifier */ |
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#define HOLOVERS 0 /* file format version number */ |
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< |
#define HOLOMAGIC (323+sizeof(off_t)+8*HOLOVERS) /* file magic number */ |
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> |
#define HOLOMAGIC (324+sizeof(BEAMI)+16*HOLOVERS) /* file magic number */ |
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|
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/* |
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* A holodeck file consists of an information header terminated by a |
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* blank line, with "FORMAT=Holodeck" somewhere in it. |
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* The first integer after the information header is the |
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* above magic number, which includes the file format version number. |
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< |
* The first longword after the magic number is a pointer to the pointer |
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< |
* just before the SECOND holodeck section, or 0 if there is only one. |
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> |
* The first longword (off_t) after the magic number is a pointer to the |
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> |
* pointer just before the SECOND holodeck section, or 0 if there is only one. |
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* This longword is immediately followed by the first holodeck |
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* section header and directory. |
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* Similarly, every holodeck section in the file is preceeded by |
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* in future versions, but we thought this would be best for paging speed |
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* in our initial implementation. |
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*/ |
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+ |
|
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+ |
/* clumpbeams.c */ |
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+ |
extern void clumpbeams(HOLO *hp, int maxcnt, int maxsiz, |
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+ |
int (*cf)(HOLO *hp, int *bqueue, int bqlen)); |
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+ |
/* holo.c */ |
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+ |
extern void hdcompgrid(HOLO *hp); |
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extern int hdbcoord(GCOORD gc[2], HOLO *hp, int i); |
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+ |
extern int hdbindex(HOLO *hp, GCOORD gc[2]); |
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+ |
extern void hdcell(FVECT cp[4], HOLO *hp, GCOORD *gc); |
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extern int hdlseg(int lseg[2][3], HOLO *hp, GCOORD gc[2]); |
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extern unsigned int hdcode(HOLO *hp, double d); |
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extern void hdgrid( FVECT gp, HOLO *hp, FVECT wp); |
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extern void hdworld(FVECT wp, HOLO *hp, FVECT gp); |
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extern double hdray(FVECT ro, FVECT rd, HOLO *hp, GCOORD gc[2], uby8 r[2][2]); |
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+ |
extern double hdinter(GCOORD gc[2], uby8 r[2][2], double *ed, HOLO *hp, |
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+ |
FVECT ro, FVECT rd); |
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/* holofile.c */ |
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+ |
extern HOLO * hdinit(int fd, HDGRID *hproto); |
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+ |
extern void hddone(HOLO *hp); |
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+ |
extern int hdsync(HOLO *hp, int all); |
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+ |
extern off_t hdfilen(int fd); |
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+ |
extern off_t hdfiluse(int fd); |
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+ |
extern RAYVAL * hdnewrays(HOLO *hp, int i, int nr); |
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+ |
extern BEAM * hdgetbeam(HOLO *hp, int i); |
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+ |
extern void hdloadbeams(HDBEAMI *hb, int n, void (*bf)(BEAM *bp, HDBEAMI *hb)); |
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+ |
extern int hdfreebeam(HOLO *hp, int i); |
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+ |
extern int hdfreefrag(HOLO *hp, int i); |
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+ |
extern int hdfragOK(int fd, int *listlen, int32 *listsiz); |
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+ |
extern int hdkillbeam(HOLO *hp, int i); |
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+ |
|
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+ |
|
| 175 |
+ |
#ifdef __cplusplus |
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+ |
} |
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+ |
#endif |
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+ |
#endif /* _RAD_HOLO_H_ */ |
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|
