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Sourcecode: acm4 version File versions  Download package

FillRect.c

#include <Alib.h>

extern int MakeET();

void FillRectangle (w, x, y, width, height, zinfo)
AWindow     *w;
int   x, y;
int   width, height;
ZInfo *zinfo; {

      Point pts[4];
      register int yextent, xextent;

/*
 *  (Minimally) clip the box.
 */

      xextent = x + width - 1;
      yextent = y + height - 1;

      if (x > w->clip.x2 || y > w->clip.y2 ||
            xextent < w->clip.x1 || yextent < w->clip.y1) {
            return;
      }
      if (x < w->clip.x1) {
            x = w->clip.x1;
      }
      if (y < w->clip.y1) {
            y = w->clip.y1;
      }
      if (xextent > w->clip.x2) {
            xextent = w->clip.x2;
      }
      if (yextent > w->clip.y2) {
            yextent = w->clip.y2;
      }

      pts[0].x = x;
      pts[0].y = y;
      pts[1].x = xextent;
      pts[1].y = y;
      pts[2].x = xextent;
      pts[2].y = yextent;
      pts[3].x = x;
      pts[3].y = yextent;

      MakeET (w, pts, 4, zinfo);
}

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