| 1 |
< |
/* Copyright (c) 1986 Regents of the University of California */ |
| 2 |
< |
|
| 3 |
< |
/* SCCSid "$SunId$ LBL" */ |
| 4 |
< |
|
| 1 |
> |
/* RCSid $Id$ */ |
| 2 |
|
/* |
| 3 |
|
* source.h - header file for ray tracing sources. |
| 4 |
|
* |
| 5 |
< |
* 8/20/85 |
| 5 |
> |
* Include after ray.h |
| 6 |
|
*/ |
| 7 |
+ |
#ifndef _RAD_SOURCE_H_ |
| 8 |
+ |
#define _RAD_SOURCE_H_ |
| 9 |
|
|
| 10 |
+ |
#include <string.h> |
| 11 |
+ |
|
| 12 |
+ |
#ifdef __cplusplus |
| 13 |
+ |
extern "C" { |
| 14 |
+ |
#endif |
| 15 |
+ |
|
| 16 |
+ |
#ifndef AIMREQT |
| 17 |
|
#define AIMREQT 100 /* required aim success/failure */ |
| 18 |
+ |
#endif |
| 19 |
+ |
#ifndef SHADCACHE |
| 20 |
+ |
#define SHADCACHE 20 /* shadow cache resolution */ |
| 21 |
+ |
#endif |
| 22 |
|
|
| 23 |
|
#define SDISTANT 01 /* source distant flag */ |
| 24 |
|
#define SSKIP 02 /* source skip flag */ |
| 26 |
|
#define SSPOT 010 /* source spotlight flag */ |
| 27 |
|
#define SVIRTUAL 020 /* source virtual flag */ |
| 28 |
|
#define SFLAT 040 /* source flat flag */ |
| 29 |
< |
#define SCYL 0100 /* source cylindrical flag */ |
| 30 |
< |
#define SFOLLOW 0200 /* source follow path flag */ |
| 29 |
> |
#define SCIR 0100 /* source circular flag */ |
| 30 |
> |
#define SCYL 0200 /* source cylindrical flag */ |
| 31 |
> |
#define SFOLLOW 0400 /* source follow path flag */ |
| 32 |
|
|
| 33 |
|
typedef struct { |
| 34 |
|
FVECT aim; /* aim direction or center */ |
| 35 |
|
float siz; /* output solid angle or area */ |
| 36 |
< |
float flen; /* focal length */ |
| 36 |
> |
float flen; /* focal length (negative if distant source) */ |
| 37 |
|
} SPOT; /* spotlight */ |
| 38 |
|
|
| 39 |
|
typedef struct { |
| 40 |
< |
int sflags; /* source flags */ |
| 40 |
> |
union { |
| 41 |
> |
struct { |
| 42 |
> |
FVECT u, v; /* unit vectors */ |
| 43 |
> |
} f; /* flat source indexing */ |
| 44 |
> |
struct { |
| 45 |
> |
FVECT o; /* origin position */ |
| 46 |
> |
RREAL e1, e2; /* 1/extent */ |
| 47 |
> |
int ax; /* major direction */ |
| 48 |
> |
} d; /* distant source indexing */ |
| 49 |
> |
} p; /* indexing parameters */ |
| 50 |
> |
OBJECT obs[1]; /* cache obstructors (extends struct) */ |
| 51 |
> |
} OBSCACHE; /* obstructor cache */ |
| 52 |
> |
|
| 53 |
> |
typedef struct { |
| 54 |
|
FVECT sloc; /* direction or position of source */ |
| 55 |
|
FVECT ss[3]; /* source dimension vectors, U, V, and W */ |
| 56 |
|
float srad; /* maximum source radius */ |
| 57 |
|
float ss2; /* solid angle or projected area */ |
| 58 |
+ |
OBJREC *so; /* source destination object */ |
| 59 |
|
struct { |
| 60 |
|
float prox; /* proximity */ |
| 61 |
|
SPOT *s; /* spot */ |
| 62 |
|
} sl; /* localized source information */ |
| 63 |
|
union { |
| 64 |
< |
int success; /* successes - AIMREQT*failures */ |
| 64 |
> |
long success; /* successes - AIMREQT*failures */ |
| 65 |
|
struct { |
| 66 |
|
short pn; /* projection number */ |
| 67 |
< |
short sn; /* next source to aim for */ |
| 67 |
> |
int sn; /* next source to aim for */ |
| 68 |
|
} sv; /* virtual source */ |
| 69 |
|
} sa; /* source aiming information */ |
| 70 |
< |
long ntests, nhits; /* shadow tests and hits */ |
| 71 |
< |
OBJREC *so; /* source destination object */ |
| 70 |
> |
unsigned long |
| 71 |
> |
ntests, nhits; /* shadow tests and hits */ |
| 72 |
> |
#ifdef SHADCACHE |
| 73 |
> |
OBSCACHE *obscache; /* obstructor cache */ |
| 74 |
> |
#endif |
| 75 |
> |
int sflags; /* source flags */ |
| 76 |
|
} SRCREC; /* light source */ |
| 77 |
|
|
| 78 |
|
#define MAXSPART 64 /* maximum partitions per source */ |
| 85 |
|
#define snorm ss[SW] /* normal vector for flat source */ |
| 86 |
|
|
| 87 |
|
typedef struct { |
| 88 |
+ |
double dom; /* solid angle of partition */ |
| 89 |
|
int sn; /* source number */ |
| 90 |
|
short np; /* number of partitions */ |
| 91 |
|
short sp; /* this partition number */ |
| 62 |
– |
double dom; /* solid angle of partition */ |
| 92 |
|
unsigned char spt[MAXSPART/2]; /* source partitioning */ |
| 93 |
|
} SRCINDEX; /* source index structure */ |
| 94 |
|
|
| 95 |
|
#define initsrcindex(s) ((s)->sn = (s)->sp = -1, (s)->np = 0) |
| 96 |
|
|
| 97 |
< |
#define clrpart(pt) bzero((char *)(pt), MAXSPART/2) |
| 97 |
> |
#define clrpart(pt) memset((char *)(pt), '\0', MAXSPART/2) |
| 98 |
|
#define setpart(pt,i,v) ((pt)[(i)>>2] |= (v)<<(((i)&3)<<1)) |
| 99 |
|
#define spart(pt,pi) ((pt)[(pi)>>2] >> (((pi)&3)<<1) & 3) |
| 100 |
|
|
| 120 |
|
} VSMATERIAL; /* virtual source material functions */ |
| 121 |
|
|
| 122 |
|
typedef struct { |
| 123 |
< |
int (*setsrc)(); /* set light source for object */ |
| 124 |
< |
int (*partit)(); /* partition light source object */ |
| 123 |
> |
void (*setsrc)(); /* set light source for object */ |
| 124 |
> |
void (*partit)(); /* partition light source object */ |
| 125 |
|
double (*getpleq)(); /* plane equation for surface */ |
| 126 |
|
double (*getdisk)(); /* maximum disk for surface */ |
| 127 |
|
} SOBJECT; /* source object functions */ |
| 136 |
|
extern SRCREC *source; /* our source list */ |
| 137 |
|
extern int nsources; /* the number of sources */ |
| 138 |
|
|
| 110 |
– |
extern int srcvalue(); /* compute source value w/o shadows */ |
| 111 |
– |
extern double nextssamp(); /* get next source sample location */ |
| 112 |
– |
extern double scylform(); /* cosine to axis of cylinder */ |
| 113 |
– |
|
| 139 |
|
#define sflatform(sn,dir) -DOT(source[sn].snorm, dir) |
| 140 |
|
|
| 116 |
– |
extern double intercircle(); /* intersect two circles */ |
| 117 |
– |
extern double spotdisk(); /* intersecting disk for spot */ |
| 118 |
– |
extern double beamdisk(); /* intersecting disk for beam */ |
| 119 |
– |
|
| 120 |
– |
extern SPOT *makespot(); /* make spotlight */ |
| 121 |
– |
|
| 122 |
– |
extern double dstrsrc; /* source distribution amount */ |
| 123 |
– |
extern double shadthresh; /* relative shadow threshold */ |
| 124 |
– |
extern double shadcert; /* shadow testing certainty */ |
| 125 |
– |
extern double srcsizerat; /* max. ratio of source size/dist. */ |
| 126 |
– |
extern int directrelay; /* maximum number of source relays */ |
| 127 |
– |
extern int vspretest; /* virtual source pretest density */ |
| 128 |
– |
extern int directinvis; /* sources invisible? */ |
| 129 |
– |
|
| 141 |
|
#define getplaneq(c,o) (*sfun[(o)->otype].of->getpleq)(c,o) |
| 142 |
|
#define getmaxdisk(c,o) (*sfun[(o)->otype].of->getdisk)(c,o) |
| 143 |
|
#define setsource(s,o) (*sfun[(o)->otype].of->setsrc)(s,o) |
| 144 |
+ |
|
| 145 |
+ |
/* defined in source.c */ |
| 146 |
+ |
extern OBJREC *findmaterial(OBJREC *o); |
| 147 |
+ |
extern void marksources(void); |
| 148 |
+ |
extern void freesources(void); |
| 149 |
+ |
extern int srcray(RAY *sr, RAY *r, SRCINDEX *si); |
| 150 |
+ |
extern void srcvalue(RAY *r); |
| 151 |
+ |
extern int sourcehit(RAY *r); |
| 152 |
+ |
typedef void srcdirf_t(COLOR cv, void *np, FVECT ldir, double omega); |
| 153 |
+ |
extern void direct(RAY *r, srcdirf_t *f, void *p); |
| 154 |
+ |
extern void srcscatter(RAY *r); |
| 155 |
+ |
extern int m_light(OBJREC *m, RAY *r); |
| 156 |
+ |
/* defined in srcobstr.c */ |
| 157 |
+ |
extern void initobscache(int sn); |
| 158 |
+ |
extern int srcblocker(RAY *r); |
| 159 |
+ |
extern int srcblocked(RAY *r); |
| 160 |
+ |
extern void freeobscache(SRCREC *s); |
| 161 |
+ |
extern void markclip(OBJREC *m); |
| 162 |
+ |
/* defined in srcsamp.c */ |
| 163 |
+ |
extern double nextssamp(RAY *r, SRCINDEX *si); |
| 164 |
+ |
extern int skipparts(int ct[3], int sz[3], int pp[2], unsigned char *pt); |
| 165 |
+ |
extern void nopart(SRCINDEX *si, RAY *r); |
| 166 |
+ |
extern void cylpart(SRCINDEX *si, RAY *r); |
| 167 |
+ |
extern void flatpart(SRCINDEX *si, RAY *r); |
| 168 |
+ |
extern double scylform(int sn, FVECT dir); |
| 169 |
+ |
/* defined in srcsupp.c */ |
| 170 |
+ |
extern void initstypes(void); |
| 171 |
+ |
extern int newsource(void); |
| 172 |
+ |
extern void setflatss(SRCREC *src); |
| 173 |
+ |
extern void fsetsrc(SRCREC *src, OBJREC *so); |
| 174 |
+ |
extern void ssetsrc(SRCREC *src, OBJREC *so); |
| 175 |
+ |
extern void sphsetsrc(SRCREC *src, OBJREC *so); |
| 176 |
+ |
extern void rsetsrc(SRCREC *src, OBJREC *so); |
| 177 |
+ |
extern void cylsetsrc(SRCREC *src, OBJREC *so); |
| 178 |
+ |
extern SPOT *makespot(OBJREC *m); |
| 179 |
+ |
extern int spotout(RAY *r, SPOT *s); |
| 180 |
+ |
extern double fgetmaxdisk(FVECT ocent, OBJREC *op); |
| 181 |
+ |
extern double rgetmaxdisk(FVECT ocent, OBJREC *op); |
| 182 |
+ |
extern double fgetplaneq(FVECT nvec, OBJREC *op); |
| 183 |
+ |
extern double rgetplaneq(FVECT nvec, OBJREC *op); |
| 184 |
+ |
extern int commonspot(SPOT *sp1, SPOT *sp2, FVECT org); |
| 185 |
+ |
extern int commonbeam(SPOT *sp1, SPOT *sp2, FVECT org); |
| 186 |
+ |
extern int checkspot(SPOT *sp, FVECT nrm); |
| 187 |
+ |
extern double spotdisk(FVECT oc, OBJREC *op, SPOT *sp, FVECT pos); |
| 188 |
+ |
extern double beamdisk(FVECT oc, OBJREC *op, SPOT *sp, FVECT dir); |
| 189 |
+ |
extern double intercircle(FVECT cc, FVECT c1, FVECT c2, |
| 190 |
+ |
double r1s, double r2s); |
| 191 |
+ |
/* defined in virtuals.c */ |
| 192 |
+ |
extern void markvirtuals(void); |
| 193 |
+ |
extern void addvirtuals(int sn, int nr); |
| 194 |
+ |
extern void vproject(OBJREC *o, int sn, int n); |
| 195 |
+ |
extern OBJREC *vsmaterial(OBJREC *o); |
| 196 |
+ |
extern int makevsrc(OBJREC *op, int sn, MAT4 pm); |
| 197 |
+ |
extern double getdisk(FVECT oc, OBJREC *op, int sn); |
| 198 |
+ |
extern int vstestvis(int f, OBJREC *o, FVECT oc, double or2, int sn); |
| 199 |
+ |
extern void virtverb(int sn, FILE *fp); |
| 200 |
+ |
|
| 201 |
+ |
|
| 202 |
+ |
#ifdef __cplusplus |
| 203 |
+ |
} |
| 204 |
+ |
#endif |
| 205 |
+ |
#endif /* _RAD_SOURCE_H_ */ |
| 206 |
+ |
|
