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inside.c
Package: leda.tar.gz　[view]
Upload User: gzelex
Upload Date: 2007-01-07
Package Size: 707k
Code Size: 1k
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Mathimatics-Numerical algorithms

Development Platform:

MultiPlatform

inside.c：Code Content
  1. #include <LEDA/plane.h>
  2. #include <LEDA/window.h>
  4. main()
  6. { window W;
  9.   string   s[5];
  11.   s[0] = "no grid ";
  12.   s[1] = "10 pixel";
  13.   s[2] = "20 pixel";
  14.   s[3] = "30 pixel";
  15.   s[4] = "40 pixel";
  17.   int grid_width = 10 * W.read_panel("GRID MODE ? ",5,s);
  19.   W.clear();
  21.   W.init(0,1000,0, grid_width);
  22.   W.set_node_width(2);
  25.   polygon P;
  27.   W >> P;
  29.   W << P;
  31.   int key;
  33.   double x,y;
  35.   while ((key = W.read_mouse(x,y)) !=3) 
  36.   { point p(x,y);
  37.     W << p; 
  38.     if (key == 1)
  39.     { if (P.inside(p)) W.draw_text(p,"INSIDE");
  40.       else W.draw_text(p,"OUTSIDE");
  41.      }
  42.     else
  43.     { W.clear();
  44.       W << P; 
  45.       int n = W.read_int("n = ");
  46.       while (n--)
  47.       { p = point(rand_int(0,1000),rand_int(0,1000));
  48.         if (P.inside(p)) W.draw_filled_node(p);
  49.         else W << p;
  50.        }
  51.      }
  52.   }
  54.   return 0;
  55. }