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*/ |
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#ifndef _RAD_SOURCE_H_ |
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#define _RAD_SOURCE_H_ |
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|
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#include <string.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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< |
|
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< |
#include "copyright.h" |
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< |
|
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> |
#ifndef AIMREQT |
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#define AIMREQT 100 /* required aim success/failure */ |
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#endif |
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#ifndef SHADCACHE |
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#define SHADCACHE 20 /* shadow cache resolution */ |
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#endif |
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#ifndef MINSHADCNT |
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#define MINSHADCNT 2 /* test at least this many shadows */ |
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#endif |
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|
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#define SDISTANT 01 /* source distant flag */ |
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#define SSKIP 02 /* source skip flag */ |
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#define SSPOT 010 /* source spotlight flag */ |
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#define SVIRTUAL 020 /* source virtual flag */ |
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#define SFLAT 040 /* source flat flag */ |
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#define SCYL 0100 /* source cylindrical flag */ |
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#define SFOLLOW 0200 /* source follow path flag */ |
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#define SCIR 0100 /* source circular flag */ |
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#define SCYL 0200 /* source cylindrical flag */ |
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#define SFOLLOW 0400 /* source follow path flag */ |
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|
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typedef struct { |
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FVECT aim; /* aim direction or center */ |
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} SPOT; /* spotlight */ |
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|
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typedef struct { |
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< |
int sflags; /* source flags */ |
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> |
union { |
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> |
struct { |
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> |
FVECT u, v; /* unit vectors */ |
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> |
} f; /* flat source indexing */ |
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> |
struct { |
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> |
FVECT o; /* origin position */ |
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RREAL e1, e2; /* 1/extent */ |
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int ax; /* major direction */ |
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> |
} d; /* distant source indexing */ |
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> |
} p; /* indexing parameters */ |
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> |
OBJECT obs[1]; /* cache obstructors (extends struct) */ |
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> |
} OBSCACHE; /* obstructor cache */ |
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> |
|
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> |
typedef struct { |
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FVECT sloc; /* direction or position of source */ |
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FVECT ss[3]; /* source dimension vectors, U, V, and W */ |
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float srad; /* maximum source radius */ |
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float ss2; /* solid angle or projected area */ |
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+ |
OBJREC *so; /* source destination object */ |
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struct { |
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float prox; /* proximity */ |
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SPOT *s; /* spot */ |
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} sa; /* source aiming information */ |
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unsigned long |
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ntests, nhits; /* shadow tests and hits */ |
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< |
OBJREC *so; /* source destination object */ |
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> |
#if SHADCACHE |
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> |
OBSCACHE *obscache; /* obstructor cache */ |
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> |
#endif |
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> |
int sflags; /* source flags */ |
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} SRCREC; /* light source */ |
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|
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#define MAXSPART 64 /* maximum partitions per source */ |
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#define snorm ss[SW] /* normal vector for flat source */ |
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|
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typedef struct { |
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+ |
double dom; /* solid angle of partition */ |
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int sn; /* source number */ |
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short np; /* number of partitions */ |
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short sp; /* this partition number */ |
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double dom; /* solid angle of partition */ |
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unsigned char spt[MAXSPART/2]; /* source partitioning */ |
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} SRCINDEX; /* source index structure */ |
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|
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#define initsrcindex(s) ((s)->sn = (s)->sp = -1, (s)->np = 0) |
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|
| 100 |
< |
#define clrpart(pt) bzero((char *)(pt), MAXSPART/2) |
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> |
#define clrpart(pt) memset((char *)(pt), '\0', MAXSPART/2) |
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#define setpart(pt,i,v) ((pt)[(i)>>2] |= (v)<<(((i)&3)<<1)) |
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#define spart(pt,pi) ((pt)[(pi)>>2] >> (((pi)&3)<<1) & 3) |
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|
| 147 |
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|
| 148 |
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/* defined in source.c */ |
| 149 |
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extern void marksources(void); |
| 150 |
+ |
extern void distantsources(void); |
| 151 |
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extern void freesources(void); |
| 152 |
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extern int srcray(RAY *sr, RAY *r, SRCINDEX *si); |
| 153 |
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extern void srcvalue(RAY *r); |
| 154 |
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extern int sourcehit(RAY *r); |
| 155 |
< |
extern void direct(RAY *r, void (*f)(), char *p); |
| 155 |
> |
typedef void srcdirf_t(COLOR cv, void *np, FVECT ldir, double omega); |
| 156 |
> |
extern void direct(RAY *r, srcdirf_t *f, void *p); |
| 157 |
|
extern void srcscatter(RAY *r); |
| 158 |
|
extern int m_light(OBJREC *m, RAY *r); |
| 159 |
+ |
/* defined in srcobstr.c */ |
| 160 |
+ |
extern void initobscache(int sn); |
| 161 |
+ |
extern int srcblocker(RAY *r); |
| 162 |
+ |
extern int srcblocked(RAY *r); |
| 163 |
+ |
extern void freeobscache(SRCREC *s); |
| 164 |
+ |
extern void markclip(OBJREC *m); |
| 165 |
|
/* defined in srcsamp.c */ |
| 166 |
|
extern double nextssamp(RAY *r, SRCINDEX *si); |
| 167 |
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extern int skipparts(int ct[3], int sz[3], int pp[2], unsigned char *pt); |
