| 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 |
+ |
#ifdef __cplusplus |
| 10 |
+ |
extern "C" { |
| 11 |
+ |
#endif |
| 12 |
|
|
| 13 |
+ |
#define AIMREQT 100 /* required aim success/failure */ |
| 14 |
+ |
|
| 15 |
|
#define SDISTANT 01 /* source distant flag */ |
| 16 |
|
#define SSKIP 02 /* source skip flag */ |
| 17 |
+ |
#define SPROX 04 /* source proximity flag */ |
| 18 |
+ |
#define SSPOT 010 /* source spotlight flag */ |
| 19 |
+ |
#define SVIRTUAL 020 /* source virtual flag */ |
| 20 |
+ |
#define SFLAT 040 /* source flat flag */ |
| 21 |
+ |
#define SCYL 0100 /* source cylindrical flag */ |
| 22 |
+ |
#define SFOLLOW 0200 /* source follow path flag */ |
| 23 |
|
|
| 24 |
|
typedef struct { |
| 25 |
< |
short sflags; /* source flags */ |
| 25 |
> |
FVECT aim; /* aim direction or center */ |
| 26 |
> |
float siz; /* output solid angle or area */ |
| 27 |
> |
float flen; /* focal length (negative if distant source) */ |
| 28 |
> |
} SPOT; /* spotlight */ |
| 29 |
> |
|
| 30 |
> |
typedef struct { |
| 31 |
> |
int sflags; /* source flags */ |
| 32 |
|
FVECT sloc; /* direction or position of source */ |
| 33 |
< |
float ss; /* tangent or disk radius */ |
| 34 |
< |
float ss2; /* domega or projected area */ |
| 35 |
< |
long ntests, nhits; /* shadow tests and hits */ |
| 36 |
< |
OBJREC *so; /* source object */ |
| 33 |
> |
FVECT ss[3]; /* source dimension vectors, U, V, and W */ |
| 34 |
> |
float srad; /* maximum source radius */ |
| 35 |
> |
float ss2; /* solid angle or projected area */ |
| 36 |
> |
struct { |
| 37 |
> |
float prox; /* proximity */ |
| 38 |
> |
SPOT *s; /* spot */ |
| 39 |
> |
} sl; /* localized source information */ |
| 40 |
> |
union { |
| 41 |
> |
long success; /* successes - AIMREQT*failures */ |
| 42 |
> |
struct { |
| 43 |
> |
short pn; /* projection number */ |
| 44 |
> |
int sn; /* next source to aim for */ |
| 45 |
> |
} sv; /* virtual source */ |
| 46 |
> |
} sa; /* source aiming information */ |
| 47 |
> |
unsigned long |
| 48 |
> |
ntests, nhits; /* shadow tests and hits */ |
| 49 |
> |
OBJREC *so; /* source destination object */ |
| 50 |
|
} SRCREC; /* light source */ |
| 51 |
|
|
| 52 |
+ |
#define MAXSPART 64 /* maximum partitions per source */ |
| 53 |
+ |
|
| 54 |
+ |
#define SU 0 /* U vector or partition */ |
| 55 |
+ |
#define SV 1 /* V vector or partition */ |
| 56 |
+ |
#define SW 2 /* W vector or partition */ |
| 57 |
+ |
#define S0 3 /* leaf partition */ |
| 58 |
+ |
|
| 59 |
+ |
#define snorm ss[SW] /* normal vector for flat source */ |
| 60 |
+ |
|
| 61 |
|
typedef struct { |
| 62 |
< |
int sno; /* source number */ |
| 63 |
< |
FVECT dir; /* source direction */ |
| 64 |
< |
float dom; /* domega for source */ |
| 65 |
< |
float brt; /* brightness (for comparison) */ |
| 66 |
< |
COLOR val; /* contribution */ |
| 67 |
< |
} CONTRIB; /* direct contribution */ |
| 62 |
> |
int sn; /* source number */ |
| 63 |
> |
short np; /* number of partitions */ |
| 64 |
> |
short sp; /* this partition number */ |
| 65 |
> |
double dom; /* solid angle of partition */ |
| 66 |
> |
unsigned char spt[MAXSPART/2]; /* source partitioning */ |
| 67 |
> |
} SRCINDEX; /* source index structure */ |
| 68 |
|
|
| 69 |
+ |
#define initsrcindex(s) ((s)->sn = (s)->sp = -1, (s)->np = 0) |
| 70 |
+ |
|
| 71 |
+ |
#define clrpart(pt) bzero((char *)(pt), MAXSPART/2) |
| 72 |
+ |
#define setpart(pt,i,v) ((pt)[(i)>>2] |= (v)<<(((i)&3)<<1)) |
| 73 |
+ |
#define spart(pt,pi) ((pt)[(pi)>>2] >> (((pi)&3)<<1) & 3) |
| 74 |
+ |
|
| 75 |
+ |
/* |
| 76 |
+ |
* Special support functions for sources |
| 77 |
+ |
*/ |
| 78 |
+ |
|
| 79 |
+ |
/* |
| 80 |
+ |
* Virtual source materials must define the following. |
| 81 |
+ |
* |
| 82 |
+ |
* vproj(pm, op, sp, i) Compute i'th virtual projection |
| 83 |
+ |
* of source sp in object op and assign |
| 84 |
+ |
* the 4x4 transformation matrix pm. |
| 85 |
+ |
* Return 1 on success, 0 if no i'th projection. |
| 86 |
+ |
* |
| 87 |
+ |
* nproj The number of projections. The value of |
| 88 |
+ |
* i passed to vproj runs from 0 to nproj-1. |
| 89 |
+ |
*/ |
| 90 |
+ |
|
| 91 |
+ |
typedef struct { |
| 92 |
+ |
int (*vproj)(); /* project virtual sources */ |
| 93 |
+ |
int nproj; /* number of possible projections */ |
| 94 |
+ |
} VSMATERIAL; /* virtual source material functions */ |
| 95 |
+ |
|
| 96 |
+ |
typedef struct { |
| 97 |
+ |
void (*setsrc)(); /* set light source for object */ |
| 98 |
+ |
void (*partit)(); /* partition light source object */ |
| 99 |
+ |
double (*getpleq)(); /* plane equation for surface */ |
| 100 |
+ |
double (*getdisk)(); /* maximum disk for surface */ |
| 101 |
+ |
} SOBJECT; /* source object functions */ |
| 102 |
+ |
|
| 103 |
+ |
typedef union { |
| 104 |
+ |
VSMATERIAL *mf; /* material functions */ |
| 105 |
+ |
SOBJECT *of; /* object functions */ |
| 106 |
+ |
} SRCFUNC; /* source functions */ |
| 107 |
+ |
|
| 108 |
+ |
extern SRCFUNC sfun[]; /* source dispatch table */ |
| 109 |
+ |
|
| 110 |
|
extern SRCREC *source; /* our source list */ |
| 111 |
|
extern int nsources; /* the number of sources */ |
| 112 |
|
|
| 113 |
< |
extern double srcray(); /* ray to source */ |
| 113 |
> |
#define sflatform(sn,dir) -DOT(source[sn].snorm, dir) |
| 114 |
> |
|
| 115 |
> |
#define getplaneq(c,o) (*sfun[(o)->otype].of->getpleq)(c,o) |
| 116 |
> |
#define getmaxdisk(c,o) (*sfun[(o)->otype].of->getdisk)(c,o) |
| 117 |
> |
#define setsource(s,o) (*sfun[(o)->otype].of->setsrc)(s,o) |
| 118 |
> |
|
| 119 |
> |
/* defined in source.c */ |
| 120 |
> |
extern void marksources(void); |
| 121 |
> |
extern void freesources(void); |
| 122 |
> |
extern int srcray(RAY *sr, RAY *r, SRCINDEX *si); |
| 123 |
> |
extern void srcvalue(RAY *r); |
| 124 |
> |
extern int sourcehit(RAY *r); |
| 125 |
> |
extern void direct(RAY *r, void (*f)(), char *p); |
| 126 |
> |
extern void srcscatter(RAY *r); |
| 127 |
> |
extern int m_light(OBJREC *m, RAY *r); |
| 128 |
> |
/* defined in srcsamp.c */ |
| 129 |
> |
extern double nextssamp(RAY *r, SRCINDEX *si); |
| 130 |
> |
extern int skipparts(int ct[3], int sz[3], int pp[2], unsigned char *pt); |
| 131 |
> |
extern void nopart(SRCINDEX *si, RAY *r); |
| 132 |
> |
extern void cylpart(SRCINDEX *si, RAY *r); |
| 133 |
> |
extern void flatpart(SRCINDEX *si, RAY *r); |
| 134 |
> |
extern double scylform(int sn, FVECT dir); |
| 135 |
> |
/* defined in srcsupp.c */ |
| 136 |
> |
extern void initstypes(void); |
| 137 |
> |
extern int newsource(void); |
| 138 |
> |
extern void setflatss(SRCREC *src); |
| 139 |
> |
extern void fsetsrc(SRCREC *src, OBJREC *so); |
| 140 |
> |
extern void ssetsrc(SRCREC *src, OBJREC *so); |
| 141 |
> |
extern void sphsetsrc(SRCREC *src, OBJREC *so); |
| 142 |
> |
extern void rsetsrc(SRCREC *src, OBJREC *so); |
| 143 |
> |
extern void cylsetsrc(SRCREC *src, OBJREC *so); |
| 144 |
> |
extern SPOT *makespot(OBJREC *m); |
| 145 |
> |
extern int spotout(RAY *r, SPOT *s); |
| 146 |
> |
extern double fgetmaxdisk(FVECT ocent, OBJREC *op); |
| 147 |
> |
extern double rgetmaxdisk(FVECT ocent, OBJREC *op); |
| 148 |
> |
extern double fgetplaneq(FVECT nvec, OBJREC *op); |
| 149 |
> |
extern double rgetplaneq(FVECT nvec, OBJREC *op); |
| 150 |
> |
extern int commonspot(SPOT *sp1, SPOT *sp2, FVECT org); |
| 151 |
> |
extern int commonbeam(SPOT *sp1, SPOT *sp2, FVECT org); |
| 152 |
> |
extern int checkspot(SPOT *sp, FVECT nrm); |
| 153 |
> |
extern double spotdisk(FVECT oc, OBJREC *op, SPOT *sp, FVECT pos); |
| 154 |
> |
extern double beamdisk(FVECT oc, OBJREC *op, SPOT *sp, FVECT dir); |
| 155 |
> |
extern double intercircle(FVECT cc, FVECT c1, FVECT c2, |
| 156 |
> |
double r1s, double r2s); |
| 157 |
> |
/* defined in virtuals.c */ |
| 158 |
> |
extern void markvirtuals(void); |
| 159 |
> |
extern void addvirtuals(int sn, int nr); |
| 160 |
> |
extern void vproject(OBJREC *o, int sn, int n); |
| 161 |
> |
extern OBJREC *vsmaterial(OBJREC *o); |
| 162 |
> |
extern int makevsrc(OBJREC *op, int sn, MAT4 pm); |
| 163 |
> |
extern double getdisk(FVECT oc, OBJREC *op, int sn); |
| 164 |
> |
extern int vstestvis(int f, OBJREC *o, FVECT oc, double or2, int sn); |
| 165 |
> |
extern void virtverb(int sn, FILE *fp); |
| 166 |
> |
|
| 167 |
> |
|
| 168 |
> |
#ifdef __cplusplus |
| 169 |
> |
} |
| 170 |
> |
#endif |
| 171 |
> |
#endif /* _RAD_SOURCE_H_ */ |
| 172 |
> |
|
