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C/C++ Source or Header  |  1991-11-12  |  402 b   |  19 lines
  1. /* Copyright 1988 Regents of the University of California */
  2.  
  3. /* SCCSid "@(#)pic.h 2.1 11/12/91 LBL" */
  4.  
  5. /* the following three structures are used by ciq */
  6.  
  7. typedef int colormap[3][256];
  8.  
  9. typedef unsigned char pixel;
  10.  
  11. typedef struct {
  12.     pixel r,g,b;
  13. } rgbpixel;
  14.  
  15. #define  rgb_bright(p)        (int)((77L*(p)->r+151L*(p)->g+28L*(p)->b)/256)
  16.  
  17. /* image resolution */
  18. extern int    xmax,ymax;
  19.