31 |
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typedef struct ray { |
32 |
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unsigned long rno; /* unique ray number */ |
33 |
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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 |
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short rtype; /* ray type */ |
37 |
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short crtype; /* cumulative ray type */ |
38 |
< |
struct ray *parent; /* ray this originated from */ |
38 |
> |
const struct ray *parent; /* ray this originated from */ |
39 |
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FVECT rorg; /* origin of ray */ |
40 |
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FVECT rdir; /* normalized direction of ray */ |
41 |
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double rmax; /* maximum distance (aft clipping plane) */ |
189 |
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extern void ray_popen(int nadd); |
190 |
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extern void ray_pclose(int nsub); |
191 |
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/* defined in raytrace.c */ |
192 |
< |
extern int rayorigin(RAY *r, RAY *ro, int rt, double rw); |
192 |
> |
extern int rayorigin(RAY *r, int rt, const RAY *ro, const COLOR rc); |
193 |
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extern void rayclear(RAY *r); |
194 |
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extern void rayvalue(RAY *r); |
195 |
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extern void rayhit(OBJECT *oset, RAY *r); |
199 |
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extern void rayparticipate(RAY *r); |
200 |
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extern void raytexture(RAY *r, OBJECT mod); |
201 |
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extern int raymixture(RAY *r, OBJECT fore, OBJECT back, double coef); |
202 |
< |
extern double raydist(RAY *r, int flags); |
202 |
> |
extern void raycontrib(COLOR rc, const RAY *r, int flags); |
203 |
> |
extern double raydist(const RAY *r, int flags); |
204 |
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extern double raynormal(FVECT norm, RAY *r); |
205 |
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extern void newrayxf(RAY *r); |
206 |
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extern void flipsurface(RAY *r); |