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C/C++ Source or Header  |  1991-12-27  |  304 b   |  17 lines
  1. /*
  2.  
  3. RT.H  Stuff global to raytracer
  4.  
  5. */
  6.  
  7. #define    INFINITE    (1.0e+20)    /* A hoooge number                   */
  8. #define    PI        3.14159265359    /* Pi                                */
  9.  
  10. #ifndef min
  11. #define    min(a,b)    (((a)<(b))?(a):(b))
  12. #endif
  13.  
  14. #ifndef max
  15. #define    max(a,b)    (((a)>(b))?(a):(b))
  16. #endif
  17.