| 2 |
|
/* |
| 3 |
|
* ray.h - header file for routines using rays. |
| 4 |
|
*/ |
| 5 |
+ |
#ifndef _RAD_RAY_H_ |
| 6 |
+ |
#define _RAD_RAY_H_ |
| 7 |
|
|
| 6 |
– |
#include "copyright.h" |
| 7 |
– |
|
| 8 |
|
#include "standard.h" |
| 9 |
– |
|
| 9 |
|
#include "octree.h" |
| 11 |
– |
|
| 10 |
|
#include "object.h" |
| 13 |
– |
|
| 11 |
|
#include "color.h" |
| 12 |
|
|
| 13 |
+ |
#ifdef __cplusplus |
| 14 |
+ |
extern "C" { |
| 15 |
+ |
#endif |
| 16 |
+ |
|
| 17 |
|
#define MAXDIM 32 /* maximum number of dimensions */ |
| 18 |
|
|
| 19 |
|
/* ray type flags */ |
| 31 |
|
typedef struct ray { |
| 32 |
|
unsigned long rno; /* unique ray number */ |
| 33 |
|
int rlvl; /* number of reflections for this ray */ |
| 34 |
< |
float rweight; /* cumulative weight of this ray */ |
| 34 |
> |
float rweight; /* cumulative weight (for termination) */ |
| 35 |
> |
COLOR rcoef; /* contribution coefficient w.r.t. parent */ |
| 36 |
|
short rtype; /* ray type */ |
| 37 |
|
short crtype; /* cumulative ray type */ |
| 38 |
< |
struct ray *parent; /* ray this originated from */ |
| 38 |
> |
const struct ray *parent; /* ray this originated from */ |
| 39 |
|
FVECT rorg; /* origin of ray */ |
| 40 |
|
FVECT rdir; /* normalized direction of ray */ |
| 41 |
|
double rmax; /* maximum distance (aft clipping plane) */ |
| 42 |
|
int rsrc; /* source we're aiming for */ |
| 43 |
|
OBJECT *clipset; /* set of objects currently clipped */ |
| 44 |
|
OBJECT *newcset; /* next clipset, used for transmission */ |
| 45 |
< |
void (*revf)(); /* evaluation function for this ray */ |
| 46 |
< |
void (*hitf)(); /* custom hit test for this traversal */ |
| 45 |
> |
void (*revf)(struct ray *); /* ray evaluation function */ |
| 46 |
> |
void (*hitf)(OBJECT *, struct ray *); /* custom hit test */ |
| 47 |
|
OBJECT robj; /* intersected object number */ |
| 48 |
|
OBJREC *ro; /* intersected object (one with material) */ |
| 49 |
|
double rot; /* distance to object */ |
| 51 |
|
FVECT ron; /* intersection surface normal */ |
| 52 |
|
double rod; /* -DOT(rdir, ron) */ |
| 53 |
|
FULLXF *rox; /* object transformation */ |
| 54 |
< |
FLOAT uv[2]; /* local coordinates */ |
| 54 |
> |
RREAL uv[2]; /* local coordinates */ |
| 55 |
|
FVECT pert; /* surface normal perturbation */ |
| 56 |
|
COLOR pcol; /* pattern color */ |
| 57 |
< |
COLOR rcol; /* returned ray value */ |
| 57 |
> |
COLOR rcol; /* returned radiance value */ |
| 58 |
|
double rt; /* returned effective ray length */ |
| 59 |
|
COLOR cext; /* medium extinction coefficient */ |
| 60 |
|
COLOR albedo; /* medium scattering albedo */ |
| 85 |
|
|
| 86 |
|
extern int do_irrad; /* compute irradiance? */ |
| 87 |
|
|
| 88 |
+ |
extern int rand_samp; /* pure Monte Carlo sampling? */ |
| 89 |
+ |
|
| 90 |
|
extern double dstrsrc; /* square source distribution */ |
| 91 |
|
extern double shadthresh; /* shadow threshold */ |
| 92 |
|
extern double shadcert; /* shadow testing certainty */ |
| 122 |
|
extern int ray_pnprocs; /* number of child processes */ |
| 123 |
|
extern int ray_pnidle; /* number of idle processes */ |
| 124 |
|
|
| 125 |
< |
#define AMBLLEN 128 /* max. ambient list length */ |
| 126 |
< |
#define AMBWORD 8 /* average word length */ |
| 125 |
> |
#ifndef AMBLLEN |
| 126 |
> |
#define AMBLLEN 512 /* max. ambient list length */ |
| 127 |
> |
#endif |
| 128 |
> |
#define AMBWORD 12 /* average word length */ |
| 129 |
|
|
| 130 |
|
typedef struct { /* rendering parameter holder */ |
| 131 |
|
int do_irrad; |
| 132 |
+ |
int rand_samp; |
| 133 |
|
double dstrsrc; |
| 134 |
|
double shadthresh; |
| 135 |
|
double shadcert; |
| 162 |
|
#define rpambmod(p,i) ( (i)>=AMBLLEN||(p)->amblndx[i]<0 ? \ |
| 163 |
|
(char *)NULL : (p)->amblval+(p)->amblndx[i] ) |
| 164 |
|
|
| 158 |
– |
#ifdef NOPROTO |
| 159 |
– |
|
| 160 |
– |
extern void headclean(); |
| 161 |
– |
extern void openheader(); |
| 162 |
– |
extern void dupheader(); |
| 163 |
– |
extern void pfdetach(); |
| 164 |
– |
extern void pfclean(); |
| 165 |
– |
extern void pflock(); |
| 166 |
– |
extern void pfhold(); |
| 167 |
– |
extern void io_process(); |
| 168 |
– |
extern int free_objs(); |
| 169 |
– |
extern void free_objmem(); |
| 170 |
– |
extern int load_os(); |
| 171 |
– |
extern void preload_objs(); |
| 172 |
– |
extern void ray_init(); |
| 173 |
– |
extern void ray_trace(); |
| 174 |
– |
extern void ray_done(); |
| 175 |
– |
extern void ray_save(); |
| 176 |
– |
extern void ray_restore(); |
| 177 |
– |
extern void ray_defaults(); |
| 178 |
– |
extern void ray_pinit(); |
| 179 |
– |
extern void ray_psend(); |
| 180 |
– |
extern int ray_pqueue(); |
| 181 |
– |
extern int ray_presult(); |
| 182 |
– |
extern void ray_pdone(); |
| 183 |
– |
extern void ray_popen(); |
| 184 |
– |
extern void ray_pclose(); |
| 185 |
– |
extern int rayorigin(); |
| 186 |
– |
extern void rayclear(); |
| 187 |
– |
extern void raytrace(); |
| 188 |
– |
extern void rayhit(); |
| 189 |
– |
extern void raycont(); |
| 190 |
– |
extern void raytrans(); |
| 191 |
– |
extern int rayshade(); |
| 192 |
– |
extern void rayparticipate(); |
| 193 |
– |
extern void raytexture(); |
| 194 |
– |
extern int raymixture(); |
| 195 |
– |
extern double raydist(); |
| 196 |
– |
extern double raynormal(); |
| 197 |
– |
extern void newrayxf(); |
| 198 |
– |
extern void flipsurface(); |
| 199 |
– |
extern int localhit(); |
| 200 |
– |
extern int getrenderopt(); |
| 201 |
– |
extern void print_rdefaults(); |
| 202 |
– |
extern void drawsources(); |
| 203 |
– |
extern void rtrace(); |
| 204 |
– |
extern void rview(); |
| 205 |
– |
extern void rpict(); |
| 206 |
– |
|
| 207 |
– |
#else |
| 165 |
|
/* defined in duphead.c */ |
| 166 |
|
extern void headclean(void); |
| 167 |
|
extern void openheader(void); |
| 168 |
|
extern void dupheader(void); |
| 169 |
+ |
/* defined in persist.c */ |
| 170 |
+ |
extern void persistfile(char *pfn); |
| 171 |
|
extern void pfdetach(void); |
| 172 |
|
extern void pfclean(void); |
| 173 |
|
extern void pflock(int lf); |
| 195 |
|
extern void ray_popen(int nadd); |
| 196 |
|
extern void ray_pclose(int nsub); |
| 197 |
|
/* defined in raytrace.c */ |
| 198 |
< |
extern int rayorigin(RAY *r, RAY *ro, int rt, double rw); |
| 198 |
> |
extern int rayorigin(RAY *r, int rt, const RAY *ro, const COLOR rc); |
| 199 |
|
extern void rayclear(RAY *r); |
| 200 |
|
extern void raytrace(RAY *r); |
| 201 |
|
extern void rayhit(OBJECT *oset, RAY *r); |
| 205 |
|
extern void rayparticipate(RAY *r); |
| 206 |
|
extern void raytexture(RAY *r, OBJECT mod); |
| 207 |
|
extern int raymixture(RAY *r, OBJECT fore, OBJECT back, double coef); |
| 208 |
< |
extern double raydist(RAY *r, int flags); |
| 208 |
> |
extern void raycontrib(COLOR rc, const RAY *r, int flags); |
| 209 |
> |
extern double raydist(const RAY *r, int flags); |
| 210 |
|
extern double raynormal(FVECT norm, RAY *r); |
| 211 |
|
extern void newrayxf(RAY *r); |
| 212 |
|
extern void flipsurface(RAY *r); |
| 217 |
|
/* defined in srcdraw.c */ |
| 218 |
|
extern void drawsources(COLOR *pic[], float *zbf[], |
| 219 |
|
int x0, int xsiz, int y0, int ysiz); |
| 220 |
+ |
extern void init_drawsources(int rad); |
| 221 |
+ |
/* defined in rt/initotypes.c */ |
| 222 |
+ |
extern void initotypes(void); |
| 223 |
|
/* module main procedures */ |
| 224 |
|
extern void rtrace(char *fname); |
| 225 |
+ |
extern char * formstr(int f); |
| 226 |
|
extern void rview(void); |
| 227 |
|
extern void rpict(int seq, char *pout, char *zout, char *prvr); |
| 228 |
|
|
| 229 |
+ |
|
| 230 |
+ |
#ifdef __cplusplus |
| 231 |
+ |
} |
| 232 |
|
#endif |
| 233 |
+ |
#endif /* _RAD_RAY_H_ */ |
| 234 |
+ |
|
