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root/radiance/ray/src/rt/ray.h
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Comparing ray/src/rt/ray.h (file contents):
Revision 2.27 by greg, Mon Jun 13 20:07:56 2005 UTC vs.
Revision 2.62 by greg, Fri Jun 20 18:05:30 2025 UTC

# Line 9 | Line 9
9   #include  "octree.h"
10   #include  "object.h"
11   #include  "color.h"
12 + #include  "pmapparm.h"
13  
14   #ifdef __cplusplus
15   extern "C" {
16   #endif
17  
18 < #define  MAXDIM         32      /* maximum number of dimensions */
18 > #ifndef RNUMBER
19 > #define RNUMBER         size_t          /* ray counter (>= sizeof pointer) */
20 > #endif
21  
22 + #define  MAXDIM         36      /* maximum number of sampling dimensions */
23 + #define  XTRADIM        3       /* #spare dimensions */
24 + #define  ndims_inc()    (ndims -= ndims>=MAXDIM-XTRADIM, ndims++)
25 + #define  dec_ndims()    (ndims -= ndims>0)
26 +
27                                  /* ray type flags */
28   #define  PRIMARY        01              /* original ray */
29 < #define  SHADOW         02              /* ray to light source */
29 > #define  RSHADOW        02              /* reflected ray to light source */
30   #define  REFLECTED      04              /* reflected ray */
31   #define  REFRACTED      010             /* refracted (bent) ray */
32   #define  TRANS          020             /* transmitted/transferred ray */
33 < #define  AMBIENT        040             /* ray scattered for interreflection */
34 < #define  SPECULAR       0100            /* ray scattered for specular */
33 > #define  RAMBIENT       040             /* reflected diffuse interreflection */
34 > #define  RSPECULAR      0100            /* reflected specular */
35 > #define  TSHADOW        0200            /* transmitted shadow */
36 > #define  TAMBIENT       0400            /* transmitted ambient */
37 > #define  TSPECULAR      01000           /* transmitted specular */
38 > #define  SHADOW         (RSHADOW|TSHADOW)
39 > #define  AMBIENT        (RAMBIENT|TAMBIENT)
40 > #define  SPECULAR       (RSPECULAR|TSPECULAR)
41  
42                                  /* reflected ray types */
43 < #define  RAYREFL        (SHADOW|REFLECTED|AMBIENT|SPECULAR)
43 > #define  RAYREFL        (RSHADOW|REFLECTED|RAMBIENT|RSPECULAR)
44  
45 + /* Arrange so double's come first for optimal alignment */
46 + /* Pointers and long's come second for 64-bit mode */
47 + /* Int's next (unknown length), then floats, followed by short's & char's */
48   typedef struct ray {
32        unsigned long  rno;     /* unique ray number */
33        int     rlvl;           /* number of reflections for 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        const struct ray  *parent;      /* ray this originated from */
49          FVECT   rorg;           /* origin of ray */
50          FVECT   rdir;           /* normalized direction of ray */
51 <        double  rmax;           /* maximum distance (aft clipping plane) */
52 <        int     rsrc;           /* source we're aiming for */
51 >        RREAL   rmax;           /* maximum distance (aft clipping plane) */
52 >        RREAL   rot;            /* distance to object */
53 >        FVECT   rop;            /* intersection point */
54 >        FVECT   ron;            /* intersection surface normal */
55 >        RREAL   rod;            /* -DOT(rdir, ron) */
56 >        RREAL   uv[2];          /* local coordinates */
57 >        FVECT   pert;           /* surface normal perturbation */
58 >        RREAL   rmt;            /* returned mirrored ray length */
59 >        RREAL   rxt;            /* returned unmirrored ray length */
60 >        const struct ray  *parent;      /* ray this originated from */
61          OBJECT  *clipset;       /* set of objects currently clipped */
62          OBJECT  *newcset;       /* next clipset, used for transmission */
63          void    (*revf)(struct ray *);  /* ray evaluation function */
64          void    (*hitf)(OBJECT *, struct ray *);        /* custom hit test */
47        OBJECT  robj;           /* intersected object number */
65          OBJREC  *ro;            /* intersected object (one with material) */
49        double  rot;            /* distance to object */
50        FVECT   rop;            /* intersection point */
51        FVECT   ron;            /* intersection surface normal */
52        double  rod;            /* -DOT(rdir, ron) */
66          FULLXF  *rox;           /* object transformation */
67 <        RREAL   uv[2];          /* local coordinates */
68 <        FVECT   pert;           /* surface normal perturbation */
69 <        COLOR   pcol;           /* pattern color */
70 <        COLOR   rcol;           /* returned radiance value */
71 <        double  rt;             /* returned effective ray length */
67 >        int     *slights;       /* list of lights to test for scattering */
68 >        RNUMBER rno;            /* unique ray number */
69 >        OBJECT  robj;           /* intersected object number */
70 >        int     rsrc;           /* source we're aiming for (or ones to skip) */
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 */
110 > extern unsigned long
111 >                samplendx;      /* index for this sample */
112  
84 extern int      ray_savesiz;    /* size of parameter save buffer */
85
113   extern int      do_irrad;       /* compute irradiance? */
114  
115   extern int      rand_samp;      /* pure Monte Carlo sampling? */
# Line 157 | Line 184 | typedef struct {               /* rendering parameter holder */
184          int     ambincl;
185          short   amblndx[AMBLLEN+1];
186          char    amblval[AMBLLEN*AMBWORD];
187 +        
188 +        /* PMAP: photon mapping parameters */
189 +        PhotonMapParams pmapParams [NUM_PMAP_TYPES];
190   } RAYPARAMS;
191  
192   #define rpambmod(p,i)   ( (i)>=AMBLLEN||(p)->amblndx[i]<0 ? \
# Line 167 | Line 197 | extern void    headclean(void);
197   extern void     openheader(void);
198   extern void     dupheader(void);
199                                          /* defined in persist.c */
200 < extern void persistfile(char *pfn);
200 > extern void     persistfile(char *pfn);
201   extern void     pfdetach(void);
202   extern void     pfclean(void);
203   extern void     pflock(int lf);
# Line 179 | Line 209 | extern void    free_objmem(void);
209                                          /* defined in preload.c */
210   extern int      load_os(OBJREC *op);
211   extern void     preload_objs(void);
212 + extern char     *shm_boundary;
213 + extern void     cow_memshare(void);
214 + extern void     cow_doneshare(void);
215                                          /* defined in raycalls.c */
216   extern void     ray_init(char *otnm);
217   extern void     ray_trace(RAY *r);
# Line 186 | Line 219 | extern void    ray_done(int freall);
219   extern void     ray_save(RAYPARAMS *rp);
220   extern void     ray_restore(RAYPARAMS *rp);
221   extern void     ray_defaults(RAYPARAMS *rp);
222 + extern void     reset_random(void);
223                                          /* defined in raypcalls.c */
224   extern void     ray_pinit(char *otnm, int nproc);
225 < extern void     ray_psend(RAY *r);
225 > extern int      ray_psend(RAY *r);
226   extern int      ray_pqueue(RAY *r);
227   extern int      ray_presult(RAY *r, int poll);
228   extern void     ray_pdone(int freall);
229   extern void     ray_popen(int nadd);
230   extern void     ray_pclose(int nsub);
231 +                                        /* defined in ray_fifo.c */
232 + extern int      (*ray_fifo_out)(RAY *r);
233 + extern int      ray_fifo_in(RAY *r);
234 + extern int      ray_fifo_flush(void);
235                                          /* defined in raytrace.c */
236 < extern int      rayorigin(RAY *r, int rt, const RAY *ro, const COLOR rc);
236 > extern int      rayorigin(RAY *r, int rt, const RAY *ro, const SCOLOR rc);
237   extern void     rayclear(RAY *r);
238   extern void     raytrace(RAY *r);
239 + extern int      rayreject(OBJREC *o, RAY *r, double t, double rod);
240   extern void     rayhit(OBJECT *oset, RAY *r);
241   extern void     raycont(RAY *r);
242   extern void     raytrans(RAY *r);
243 + extern int      raytirrad(OBJREC *m, RAY *r);
244   extern int      rayshade(RAY *r, int mod);
245   extern void     rayparticipate(RAY *r);
246   extern void     raytexture(RAY *r, OBJECT mod);
247   extern int      raymixture(RAY *r, OBJECT fore, OBJECT back, double coef);
248 < extern void     raycontrib(COLOR rc, const RAY *r, int flags);
248 > extern void     raycontrib(SCOLOR rc, const RAY *r, int flags);
249   extern double   raydist(const RAY *r, int flags);
250   extern double   raynormal(FVECT norm, RAY *r);
251   extern void     newrayxf(RAY *r);
252   extern void     flipsurface(RAY *r);
253   extern int      localhit(RAY *r, CUBE *scene);
254                                          /* defined in renderopts.c */
255 + extern int      feature_status(int ac, char *av[]);
256   extern int      getrenderopt(int ac, char *av[]);
257   extern void     print_rdefaults(void);
258                                          /* defined in srcdraw.c */
259 < extern void     drawsources(COLOR *pic[], float *zbf[],
259 > extern void     init_drawsources(int rad);
260 > extern void     drawsources(COLORV *pic[], RGBPRIMP primp, float *zbf[],
261                          int x0, int xsiz, int y0, int ysiz);
220 extern void init_drawsources(int rad);
262                                          /* defined in rt/initotypes.c */
263 < extern void initotypes(void);
263 > extern void     initotypes(void);
264                                          /* module main procedures */
265 < extern void     rtrace(char *fname);
266 < extern char * formstr(int  f);
265 > extern void     rtrace(char *fname, int nproc);
266 > extern const char       *formstr(int  f);
267   extern void     rview(void);
268   extern void     rpict(int seq, char *pout, char *zout, char *prvr);
269  
270 + #ifdef __FAST_MATH__
271 + #define checknorm(vn)   (void)normalize(vn)
272 + #else
273 + #define checknorm(vn)
274 + #endif
275  
276   #ifdef __cplusplus
277   }

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