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greg |
2.13 |
/* RCSid $Id$ */
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1.1 |
/*
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* ray.h - header file for routines using rays.
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greg |
2.12 |
*/
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2.13 |
#include "copyright.h"
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1.1 |
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#include "standard.h"
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2.12 |
#include "octree.h"
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1.1 |
#include "object.h"
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#include "color.h"
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2.6 |
#define MAXDIM 32 /* maximum number of dimensions */
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1.1 |
/* ray type flags */
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#define PRIMARY 01 /* original ray */
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#define SHADOW 02 /* ray to light source */
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#define REFLECTED 04 /* reflected ray */
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#define REFRACTED 010 /* refracted (bent) ray */
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#define TRANS 020 /* transmitted/transferred ray */
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#define AMBIENT 040 /* ray scattered for interreflection */
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2.2 |
#define SPECULAR 0100 /* ray scattered for specular */
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1.1 |
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/* reflected ray types */
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2.2 |
#define RAYREFL (SHADOW|REFLECTED|AMBIENT|SPECULAR)
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1.1 |
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typedef struct ray {
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2.3 |
unsigned long rno; /* unique ray number */
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int rlvl; /* number of reflections for this ray */
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float rweight; /* cumulative weight of this ray */
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short rtype; /* ray type */
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short crtype; /* cumulative ray type */
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1.1 |
struct ray *parent; /* ray this originated from */
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2.12 |
FVECT rorg; /* origin of ray */
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FVECT rdir; /* normalized direction of ray */
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double rmax; /* maximum distance (aft clipping plane) */
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int rsrc; /* source we're aiming for */
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OBJECT *clipset; /* set of objects currently clipped */
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OBJECT *newcset; /* next clipset, used for transmission */
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void (*revf)(); /* evaluation function for this ray */
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2.14 |
void (*hitf)(); /* custom hit test for this traversal */
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2.11 |
OBJECT robj; /* intersected object number */
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2.12 |
OBJREC *ro; /* intersected object (one with material) */
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double rot; /* distance to object */
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FVECT rop; /* intersection point */
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FVECT ron; /* intersection surface normal */
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double rod; /* -DOT(rdir, ron) */
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FULLXF *rox; /* object transformation */
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2.15 |
FLOAT uv[2]; /* local coordinates */
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2.12 |
FVECT pert; /* surface normal perturbation */
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COLOR pcol; /* pattern color */
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COLOR rcol; /* returned ray value */
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double rt; /* returned effective ray length */
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COLOR cext; /* medium extinction coefficient */
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COLOR albedo; /* medium scattering albedo */
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float gecc; /* scattering eccentricity coefficient */
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int *slights; /* list of lights to test for scattering */
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1.1 |
} RAY;
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2.12 |
#define rayvalue(r) (*(r)->revf)(r)
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extern char VersionID[]; /* Radiance version ID string */
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1.6 |
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2.12 |
extern CUBE thescene; /* our scene */
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extern OBJECT nsceneobjs; /* number of objects in our scene */
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2.5 |
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2.12 |
extern unsigned long raynum; /* next ray ID */
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extern unsigned long nrays; /* total rays traced so far */
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1.5 |
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2.12 |
extern OBJREC Lamb; /* a Lambertian surface */
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extern OBJREC Aftplane; /* aft clipping object */
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extern void (*trace)(); /* global trace reporting callback */
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extern int dimlist[]; /* dimension list for distribution */
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extern int ndims; /* number of dimensions so far */
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extern int samplendx; /* index for this sample */
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extern int ray_savesiz; /* size of parameter save buffer */
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extern int do_irrad; /* compute irradiance? */
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extern double dstrsrc; /* square source distribution */
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extern double shadthresh; /* shadow threshold */
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extern double shadcert; /* shadow testing certainty */
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extern int directrelay; /* number of source relays */
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extern int vspretest; /* virtual source pretest density */
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extern int directvis; /* light sources visible to eye? */
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extern double srcsizerat; /* maximum source size/dist. ratio */
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extern double specthresh; /* specular sampling threshold */
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extern double specjitter; /* specular sampling jitter */
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extern COLOR cextinction; /* global extinction coefficient */
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extern COLOR salbedo; /* global scattering albedo */
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extern double seccg; /* global scattering eccentricity */
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extern double ssampdist; /* scatter sampling distance */
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extern int backvis; /* back face visibility */
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extern int maxdepth; /* maximum recursion depth */
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extern double minweight; /* minimum ray weight */
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extern char *ambfile; /* ambient file name */
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extern COLOR ambval; /* ambient value */
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extern int ambvwt; /* initial weight for ambient value */
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extern double ambacc; /* ambient accuracy */
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extern int ambres; /* ambient resolution */
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extern int ambdiv; /* ambient divisions */
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extern int ambssamp; /* ambient super-samples */
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extern int ambounce; /* ambient bounces */
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extern char *amblist[]; /* ambient include/exclude list */
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extern int ambincl; /* include == 1, exclude == 0 */
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extern int ray_pnprocs; /* number of child processes */
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extern int ray_pnidle; /* number of idle processes */
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#define AMBLLEN 128 /* max. ambient list length */
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#define AMBWORD 8 /* average word length */
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typedef struct { /* rendering parameter holder */
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int do_irrad;
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double dstrsrc;
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double shadthresh;
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double shadcert;
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int directrelay;
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int vspretest;
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int directvis;
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double srcsizerat;
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COLOR cextinction;
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COLOR salbedo;
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double seccg;
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double ssampdist;
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double specthresh;
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double specjitter;
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int backvis;
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int maxdepth;
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double minweight;
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char ambfile[512];
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COLOR ambval;
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int ambvwt;
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double ambacc;
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int ambres;
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int ambdiv;
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int ambssamp;
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int ambounce;
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int ambincl;
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short amblndx[AMBLLEN+1];
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char amblval[AMBLLEN*AMBWORD];
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} RAYPARAMS;
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#define rpambmod(p,i) ( (i)>=AMBLLEN||(p)->amblndx[i]<0 ? \
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(char *)NULL : (p)->amblval+(p)->amblndx[i] )
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#ifdef NOPROTO
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extern void headclean();
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extern void openheader();
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extern void dupheader();
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extern void pfdetach();
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extern void pfclean();
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extern void pflock();
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extern void pfhold();
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extern void io_process();
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extern int free_objs();
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extern void free_objmem();
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extern int load_os();
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extern void preload_objs();
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extern void ray_init();
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extern void ray_trace();
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extern void ray_done();
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extern void ray_save();
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extern void ray_restore();
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extern void ray_defaults();
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extern void ray_pinit();
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extern void ray_psend();
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extern int ray_pqueue();
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extern int ray_presult();
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extern void ray_pdone();
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extern void ray_popen();
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extern void ray_pclose();
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extern int rayorigin();
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extern void rayclear();
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extern void raytrace();
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greg |
2.14 |
extern void rayhit();
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2.12 |
extern void raycont();
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extern void raytrans();
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extern int rayshade();
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extern void rayparticipate();
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2.16 |
extern void raytexture();
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2.12 |
extern int raymixture();
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extern double raydist();
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extern double raynormal();
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extern void newrayxf();
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extern void flipsurface();
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extern int localhit();
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extern int getrenderopt();
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extern void print_rdefaults();
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extern void drawsources();
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extern void rtrace();
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extern void rview();
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extern void rpict();
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#else
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/* defined in duphead.c */
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extern void headclean(void);
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extern void openheader(void);
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extern void dupheader(void);
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extern void pfdetach(void);
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extern void pfclean(void);
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extern void pflock(int lf);
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extern void pfhold(void);
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extern void io_process(void);
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/* defined in freeobjmem.c */
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extern int free_objs(OBJECT on, OBJECT no);
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extern void free_objmem(void);
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/* defined in preload.c */
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extern int load_os(OBJREC *op);
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extern void preload_objs(void);
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/* defined in raycalls.c */
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extern void ray_init(char *otnm);
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extern void ray_trace(RAY *r);
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extern void ray_done(int freall);
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extern void ray_save(RAYPARAMS *rp);
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extern void ray_restore(RAYPARAMS *rp);
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extern void ray_defaults(RAYPARAMS *rp);
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/* defined in raypcalls.c */
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extern void ray_pinit(char *otnm, int nproc);
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extern void ray_psend(RAY *r);
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extern int ray_pqueue(RAY *r);
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extern int ray_presult(RAY *r, int poll);
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extern void ray_pdone(int freall);
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extern void ray_popen(int nadd);
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extern void ray_pclose(int nsub);
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/* defined in raytrace.c */
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extern int rayorigin(RAY *r, RAY *ro, int rt, double rw);
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extern void rayclear(RAY *r);
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extern void raytrace(RAY *r);
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greg |
2.14 |
extern void rayhit(OBJECT *oset, RAY *r);
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greg |
2.12 |
extern void raycont(RAY *r);
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extern void raytrans(RAY *r);
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extern int rayshade(RAY *r, int mod);
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extern void rayparticipate(RAY *r);
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greg |
2.16 |
extern void raytexture(RAY *r, OBJECT mod);
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greg |
2.12 |
extern int raymixture(RAY *r, OBJECT fore, OBJECT back, double coef);
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extern double raydist(RAY *r, int flags);
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extern double raynormal(FVECT norm, RAY *r);
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extern void newrayxf(RAY *r);
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extern void flipsurface(RAY *r);
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extern int localhit(RAY *r, CUBE *scene);
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/* defined in renderopts.c */
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extern int getrenderopt(int ac, char *av[]);
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extern void print_rdefaults(void);
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/* defined in srcdraw.c */
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extern void drawsources(COLOR *pic[], float *zbf[],
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int x0, int xsiz, int y0, int ysiz);
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/* module main procedures */
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extern void rtrace(char *fname);
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extern void rview(void);
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extern void rpict(int seq, char *pout, char *zout, char *prvr);
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greg |
1.6 |
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greg |
2.12 |
#endif
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