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C/C++ Source or Header  |  1991-10-08  |  166 b   |  13 lines
  1. #include "ray.h"
  2.  
  3. /*ARGSUSED*/
  4. struct color bgcolor(r)
  5. struct ray r;
  6. {struct color c;
  7.     if(r.l.y>0)
  8.         c.r=c.g=c.b=0.2;
  9.     else
  10.         c.r=c.g=c.b=0.2-0.8*r.l.y;
  11.     return c;
  12. }
  13.