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root/radiance/ray/src/rt/ray.h
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Comparing ray/src/rt/ray.h (file contents):
Revision 1.3 by greg, Thu Mar 22 20:07:01 1990 UTC vs.
Revision 2.11 by greg, Fri Mar 7 16:53:02 1997 UTC

# Line 1 | Line 1
1 < /* Copyright (c) 1986 Regents of the University of California */
1 > /* Copyright (c) 1995 Regents of the University of California */
2  
3   /* SCCSid "$SunId$ LBL" */
4  
# Line 14 | Line 14
14  
15   #include  "color.h"
16  
17 + #define  MAXDIM         32      /* maximum number of dimensions */
18 +
19                                  /* ray type flags */
20   #define  PRIMARY        01              /* original ray */
21   #define  SHADOW         02              /* ray to light source */
# Line 21 | Line 23
23   #define  REFRACTED      010             /* refracted (bent) ray */
24   #define  TRANS          020             /* transmitted/transferred ray */
25   #define  AMBIENT        040             /* ray scattered for interreflection */
26 + #define  SPECULAR       0100            /* ray scattered for specular */
27  
28                                  /* reflected ray types */
29 < #define  RAYREFL        (SHADOW|REFLECTED|AMBIENT)
29 > #define  RAYREFL        (SHADOW|REFLECTED|AMBIENT|SPECULAR)
30  
31   typedef struct ray {
32 <        long  rno;              /* unique ray number */
32 >        unsigned long  rno;     /* unique ray number */
33          int  rlvl;              /* number of reflections for this ray */
34          float  rweight;         /* cumulative weight of this ray */
35          short  rtype;           /* ray type */
# Line 34 | Line 37 | typedef struct ray {
37          struct ray  *parent;    /* ray this originated from */
38          FVECT  rorg;            /* origin of ray */
39          FVECT  rdir;            /* normalized direction of ray */
40 +        double  rmax;           /* maximum distance (aft clipping plane) */
41          int  rsrc;              /* source we're aiming for */
42          OBJECT  *clipset;       /* set of objects currently clipped */
43          OBJECT  *newcset;       /* next clipset, used for transmission */
44 <        OBJREC  *ro;            /* intersected object */
44 >        int  (*revf)();         /* evaluation function for this ray */
45 >        OBJECT  robj;           /* intersected object number */
46 >        OBJREC  *ro;            /* intersected object (one with material) */
47          double  rot;            /* distance to object */
48          FVECT  rop;             /* intersection point */
49          FVECT  ron;             /* intersection surface normal */
50          double  rod;            /* -DOT(rdir, ron) */
51 <        double  rofx[4][4];     /* transform from object space */
46 <        double  rofs;           /* scaling factor from object */
47 <        double  robx[4][4];     /* transform back to object space */
48 <        double  robs;           /* back scaling factor */
51 >        FULLXF  *rox;           /* object transformation */
52          FVECT  pert;            /* surface normal perturbation */
53          COLOR  pcol;            /* pattern color */
54          COLOR  rcol;            /* returned ray value */
55          double  rt;             /* returned effective ray length */
56 +        COLOR  cext;            /* medium extinction coefficient */
57 +        COLOR  albedo;          /* medium scattering albedo */
58 +        float  gecc;            /* scattering eccentricity coefficient */
59 +        int  *slights;          /* list of lights to test for scattering */
60   }  RAY;
61  
62 + extern int  raytrace();
63 +
64   extern double  raynormal();
65 +
66 + extern double  raydist();
67 +
68 + extern int  dimlist[];          /* dimension list for distribution */
69 + extern int  ndims;              /* number of dimensions so far */
70 + extern int  samplendx;          /* index for this sample */
71 +
72 + #define  rayvalue(r)    (*(r)->revf)(r)

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