| 4 |
|
*/ |
| 5 |
|
#ifndef _RAD_RAY_H_ |
| 6 |
|
#define _RAD_RAY_H_ |
| 7 |
– |
#ifdef __cplusplus |
| 8 |
– |
extern "C" { |
| 9 |
– |
#endif |
| 7 |
|
|
| 11 |
– |
|
| 12 |
– |
#include "copyright.h" |
| 13 |
– |
|
| 8 |
|
#include "standard.h" |
| 15 |
– |
|
| 9 |
|
#include "octree.h" |
| 17 |
– |
|
| 10 |
|
#include "object.h" |
| 19 |
– |
|
| 11 |
|
#include "color.h" |
| 12 |
+ |
#include "pmapparm.h" |
| 13 |
|
|
| 14 |
< |
#define MAXDIM 32 /* maximum number of dimensions */ |
| 14 |
> |
#ifdef __cplusplus |
| 15 |
> |
extern "C" { |
| 16 |
> |
#endif |
| 17 |
|
|
| 18 |
+ |
#ifndef RNUMBER |
| 19 |
+ |
#define RNUMBER size_t /* ray counter (>= sizeof pointer) */ |
| 20 |
+ |
#endif |
| 21 |
+ |
|
| 22 |
+ |
#define MAXDIM 32 /* maximum number of sampling dimensions */ |
| 23 |
+ |
|
| 24 |
|
/* ray type flags */ |
| 25 |
|
#define PRIMARY 01 /* original ray */ |
| 26 |
< |
#define SHADOW 02 /* ray to light source */ |
| 26 |
> |
#define RSHADOW 02 /* reflected ray to light source */ |
| 27 |
|
#define REFLECTED 04 /* reflected ray */ |
| 28 |
|
#define REFRACTED 010 /* refracted (bent) ray */ |
| 29 |
|
#define TRANS 020 /* transmitted/transferred ray */ |
| 30 |
< |
#define AMBIENT 040 /* ray scattered for interreflection */ |
| 31 |
< |
#define SPECULAR 0100 /* ray scattered for specular */ |
| 30 |
> |
#define RAMBIENT 040 /* reflected diffuse interreflection */ |
| 31 |
> |
#define RSPECULAR 0100 /* reflected specular */ |
| 32 |
> |
#define TSHADOW 0200 /* transmitted shadow */ |
| 33 |
> |
#define TAMBIENT 0400 /* transmitted ambient */ |
| 34 |
> |
#define TSPECULAR 01000 /* transmitted specular */ |
| 35 |
> |
#define SHADOW (RSHADOW|TSHADOW) |
| 36 |
> |
#define AMBIENT (RAMBIENT|TAMBIENT) |
| 37 |
> |
#define SPECULAR (RSPECULAR|TSPECULAR) |
| 38 |
|
|
| 39 |
|
/* reflected ray types */ |
| 40 |
< |
#define RAYREFL (SHADOW|REFLECTED|AMBIENT|SPECULAR) |
| 40 |
> |
#define RAYREFL (RSHADOW|REFLECTED|RAMBIENT|RSPECULAR) |
| 41 |
|
|
| 42 |
+ |
/* Arrange so double's come first for optimal alignment */ |
| 43 |
+ |
/* Pointers and long's come second for 64-bit mode */ |
| 44 |
+ |
/* Int's next (unknown length), then floats, followed by short's & char's */ |
| 45 |
|
typedef struct ray { |
| 37 |
– |
unsigned long rno; /* unique ray number */ |
| 38 |
– |
int rlvl; /* number of reflections for this ray */ |
| 39 |
– |
float rweight; /* cumulative weight of this ray */ |
| 40 |
– |
short rtype; /* ray type */ |
| 41 |
– |
short crtype; /* cumulative ray type */ |
| 42 |
– |
struct ray *parent; /* ray this originated from */ |
| 46 |
|
FVECT rorg; /* origin of ray */ |
| 47 |
|
FVECT rdir; /* normalized direction of ray */ |
| 48 |
< |
double rmax; /* maximum distance (aft clipping plane) */ |
| 49 |
< |
int rsrc; /* source we're aiming for */ |
| 48 |
> |
RREAL rmax; /* maximum distance (aft clipping plane) */ |
| 49 |
> |
RREAL rot; /* distance to object */ |
| 50 |
> |
FVECT rop; /* intersection point */ |
| 51 |
> |
FVECT ron; /* intersection surface normal */ |
| 52 |
> |
RREAL rod; /* -DOT(rdir, ron) */ |
| 53 |
> |
RREAL uv[2]; /* local coordinates */ |
| 54 |
> |
FVECT pert; /* surface normal perturbation */ |
| 55 |
> |
RREAL rmt; /* returned mirrored ray length */ |
| 56 |
> |
RREAL rxt; /* returned unmirrored ray length */ |
| 57 |
> |
const struct ray *parent; /* ray this originated from */ |
| 58 |
|
OBJECT *clipset; /* set of objects currently clipped */ |
| 59 |
|
OBJECT *newcset; /* next clipset, used for transmission */ |
| 60 |
< |
void (*revf)(); /* evaluation function for this ray */ |
| 61 |
< |
void (*hitf)(); /* custom hit test for this traversal */ |
| 51 |
< |
OBJECT robj; /* intersected object number */ |
| 60 |
> |
void (*revf)(struct ray *); /* ray evaluation function */ |
| 61 |
> |
void (*hitf)(OBJECT *, struct ray *); /* custom hit test */ |
| 62 |
|
OBJREC *ro; /* intersected object (one with material) */ |
| 53 |
– |
double rot; /* distance to object */ |
| 54 |
– |
FVECT rop; /* intersection point */ |
| 55 |
– |
FVECT ron; /* intersection surface normal */ |
| 56 |
– |
double rod; /* -DOT(rdir, ron) */ |
| 63 |
|
FULLXF *rox; /* object transformation */ |
| 64 |
< |
FLOAT uv[2]; /* local coordinates */ |
| 65 |
< |
FVECT pert; /* surface normal perturbation */ |
| 66 |
< |
COLOR pcol; /* pattern color */ |
| 67 |
< |
COLOR rcol; /* returned ray value */ |
| 68 |
< |
double rt; /* returned effective ray length */ |
| 64 |
> |
int *slights; /* list of lights to test for scattering */ |
| 65 |
> |
RNUMBER rno; /* unique ray number */ |
| 66 |
> |
OBJECT robj; /* intersected object number */ |
| 67 |
> |
int rsrc; /* source we're aiming for (or ones to skip) */ |
| 68 |
> |
#ifdef SSKIPOPT |
| 69 |
> |
float scorr; /* correction factor for included sources */ |
| 70 |
> |
#endif |
| 71 |
> |
float rweight; /* cumulative weight (for termination) */ |
| 72 |
> |
float gecc; /* scattering eccentricity coefficient */ |
| 73 |
> |
SCOLOR rcoef; /* contribution coefficient w.r.t. parent */ |
| 74 |
> |
SCOLOR pcol; /* pattern color */ |
| 75 |
> |
SCOLOR mcol; /* mirrored color contribution */ |
| 76 |
> |
SCOLOR rcol; /* returned radiance value */ |
| 77 |
|
COLOR cext; /* medium extinction coefficient */ |
| 78 |
|
COLOR albedo; /* medium scattering albedo */ |
| 79 |
< |
float gecc; /* scattering eccentricity coefficient */ |
| 80 |
< |
int *slights; /* list of lights to test for scattering */ |
| 79 |
> |
short rflips; /* surface orientation has been reversed */ |
| 80 |
> |
short rlvl; /* number of reflections for this ray */ |
| 81 |
> |
short rtype; /* ray type */ |
| 82 |
> |
short crtype; /* cumulative ray type */ |
| 83 |
|
} RAY; |
| 84 |
|
|
| 85 |
|
#define rayvalue(r) (*(r)->revf)(r) |
| 86 |
|
|
| 87 |
< |
extern char VersionID[]; /* Radiance version ID string */ |
| 87 |
> |
#define thrudir(r,v) ((r)->rod > 0 ^ DOT((r)->ron,v) > 0) |
| 88 |
|
|
| 89 |
+ |
#define raydistance(r) (pbright((r)->mcol) > 0.5*pbright((r)->rcol) ? \ |
| 90 |
+ |
(r)->rmt : (r)->rxt) |
| 91 |
+ |
|
| 92 |
+ |
#define rayreorient(r) if ((r)->rflips & 1) flipsurface(r); else |
| 93 |
+ |
|
| 94 |
+ |
extern char VersionID[]; /* Radiance version ID string */ |
| 95 |
+ |
extern char RFeatureList[]; /* newline-separated feature list */ |
| 96 |
+ |
|
| 97 |
|
extern CUBE thescene; /* our scene */ |
| 98 |
|
extern OBJECT nsceneobjs; /* number of objects in our scene */ |
| 99 |
|
|
| 100 |
< |
extern unsigned long raynum; /* next ray ID */ |
| 101 |
< |
extern unsigned long nrays; /* total rays traced so far */ |
| 100 |
> |
extern RNUMBER raynum; /* next ray ID */ |
| 101 |
> |
extern RNUMBER nrays; /* total rays traced so far */ |
| 102 |
|
|
| 103 |
|
extern OBJREC Lamb; /* a Lambertian surface */ |
| 104 |
|
extern OBJREC Aftplane; /* aft clipping object */ |
| 105 |
|
|
| 106 |
< |
extern void (*trace)(); /* global trace reporting callback */ |
| 106 |
> |
extern void (*trace)(RAY*); /* global trace reporting callback */ |
| 107 |
|
|
| 108 |
|
extern int dimlist[]; /* dimension list for distribution */ |
| 109 |
|
extern int ndims; /* number of dimensions so far */ |
| 110 |
|
extern int samplendx; /* index for this sample */ |
| 111 |
|
|
| 88 |
– |
extern int ray_savesiz; /* size of parameter save buffer */ |
| 89 |
– |
|
| 112 |
|
extern int do_irrad; /* compute irradiance? */ |
| 113 |
|
|
| 114 |
+ |
extern int rand_samp; /* pure Monte Carlo sampling? */ |
| 115 |
+ |
|
| 116 |
|
extern double dstrsrc; /* square source distribution */ |
| 117 |
|
extern double shadthresh; /* shadow threshold */ |
| 118 |
|
extern double shadcert; /* shadow testing certainty */ |
| 148 |
|
extern int ray_pnprocs; /* number of child processes */ |
| 149 |
|
extern int ray_pnidle; /* number of idle processes */ |
| 150 |
|
|
| 151 |
< |
#define AMBLLEN 128 /* max. ambient list length */ |
| 152 |
< |
#define AMBWORD 8 /* average word length */ |
| 151 |
> |
#ifndef AMBLLEN |
| 152 |
> |
#define AMBLLEN 512 /* max. ambient list length */ |
| 153 |
> |
#endif |
| 154 |
> |
#define AMBWORD 12 /* average word length */ |
| 155 |
|
|
| 156 |
|
typedef struct { /* rendering parameter holder */ |
| 157 |
|
int do_irrad; |
| 158 |
+ |
int rand_samp; |
| 159 |
|
double dstrsrc; |
| 160 |
|
double shadthresh; |
| 161 |
|
double shadcert; |
| 183 |
|
int ambincl; |
| 184 |
|
short amblndx[AMBLLEN+1]; |
| 185 |
|
char amblval[AMBLLEN*AMBWORD]; |
| 186 |
+ |
|
| 187 |
+ |
/* PMAP: photon mapping parameters */ |
| 188 |
+ |
PhotonMapParams pmapParams [NUM_PMAP_TYPES]; |
| 189 |
|
} RAYPARAMS; |
| 190 |
|
|
| 191 |
|
#define rpambmod(p,i) ( (i)>=AMBLLEN||(p)->amblndx[i]<0 ? \ |
| 195 |
|
extern void headclean(void); |
| 196 |
|
extern void openheader(void); |
| 197 |
|
extern void dupheader(void); |
| 198 |
+ |
/* defined in persist.c */ |
| 199 |
+ |
extern void persistfile(char *pfn); |
| 200 |
|
extern void pfdetach(void); |
| 201 |
|
extern void pfclean(void); |
| 202 |
|
extern void pflock(int lf); |
| 208 |
|
/* defined in preload.c */ |
| 209 |
|
extern int load_os(OBJREC *op); |
| 210 |
|
extern void preload_objs(void); |
| 211 |
+ |
extern char *shm_boundary; |
| 212 |
+ |
extern void cow_memshare(void); |
| 213 |
+ |
extern void cow_doneshare(void); |
| 214 |
|
/* defined in raycalls.c */ |
| 215 |
|
extern void ray_init(char *otnm); |
| 216 |
|
extern void ray_trace(RAY *r); |
| 220 |
|
extern void ray_defaults(RAYPARAMS *rp); |
| 221 |
|
/* defined in raypcalls.c */ |
| 222 |
|
extern void ray_pinit(char *otnm, int nproc); |
| 223 |
< |
extern void ray_psend(RAY *r); |
| 223 |
> |
extern int ray_psend(RAY *r); |
| 224 |
|
extern int ray_pqueue(RAY *r); |
| 225 |
|
extern int ray_presult(RAY *r, int poll); |
| 226 |
|
extern void ray_pdone(int freall); |
| 227 |
|
extern void ray_popen(int nadd); |
| 228 |
|
extern void ray_pclose(int nsub); |
| 229 |
+ |
/* defined in ray_fifo.c */ |
| 230 |
+ |
extern int (*ray_fifo_out)(RAY *r); |
| 231 |
+ |
extern int ray_fifo_in(RAY *r); |
| 232 |
+ |
extern int ray_fifo_flush(void); |
| 233 |
|
/* defined in raytrace.c */ |
| 234 |
< |
extern int rayorigin(RAY *r, RAY *ro, int rt, double rw); |
| 234 |
> |
extern int rayorigin(RAY *r, int rt, const RAY *ro, const SCOLOR rc); |
| 235 |
|
extern void rayclear(RAY *r); |
| 236 |
|
extern void raytrace(RAY *r); |
| 237 |
+ |
extern int rayreject(OBJREC *o, RAY *r, double t, double rod); |
| 238 |
|
extern void rayhit(OBJECT *oset, RAY *r); |
| 239 |
|
extern void raycont(RAY *r); |
| 240 |
|
extern void raytrans(RAY *r); |
| 241 |
+ |
extern int raytirrad(OBJREC *m, RAY *r); |
| 242 |
|
extern int rayshade(RAY *r, int mod); |
| 243 |
|
extern void rayparticipate(RAY *r); |
| 244 |
|
extern void raytexture(RAY *r, OBJECT mod); |
| 245 |
|
extern int raymixture(RAY *r, OBJECT fore, OBJECT back, double coef); |
| 246 |
< |
extern double raydist(RAY *r, int flags); |
| 246 |
> |
extern void raycontrib(SCOLOR rc, const RAY *r, int flags); |
| 247 |
> |
extern double raydist(const RAY *r, int flags); |
| 248 |
|
extern double raynormal(FVECT norm, RAY *r); |
| 249 |
|
extern void newrayxf(RAY *r); |
| 250 |
|
extern void flipsurface(RAY *r); |
| 251 |
|
extern int localhit(RAY *r, CUBE *scene); |
| 252 |
|
/* defined in renderopts.c */ |
| 253 |
+ |
extern int feature_status(int ac, char *av[]); |
| 254 |
|
extern int getrenderopt(int ac, char *av[]); |
| 255 |
|
extern void print_rdefaults(void); |
| 256 |
|
/* defined in srcdraw.c */ |
| 257 |
< |
extern void drawsources(COLOR *pic[], float *zbf[], |
| 257 |
> |
extern void init_drawsources(int rad); |
| 258 |
> |
extern void drawsources(COLORV *pic[], RGBPRIMP primp, float *zbf[], |
| 259 |
|
int x0, int xsiz, int y0, int ysiz); |
| 260 |
+ |
/* defined in rt/initotypes.c */ |
| 261 |
+ |
extern void initotypes(void); |
| 262 |
|
/* module main procedures */ |
| 263 |
< |
extern void rtrace(char *fname); |
| 263 |
> |
extern void rtrace(char *fname, int nproc); |
| 264 |
> |
extern const char *formstr(int f); |
| 265 |
|
extern void rview(void); |
| 266 |
|
extern void rpict(int seq, char *pout, char *zout, char *prvr); |
| 267 |
|
|
| 268 |
+ |
#ifdef __FAST_MATH__ |
| 269 |
+ |
#define checknorm(vn) (void)normalize(vn) |
| 270 |
+ |
#else |
| 271 |
+ |
#define checknorm(vn) |
| 272 |
+ |
#endif |
| 273 |
|
|
| 274 |
|
#ifdef __cplusplus |
| 275 |
|
} |
