vx32

Local 9vx git repository for patches.
git clone git://r-36.net/vx32
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rectclip.c (570B)

      1 #include "u.h"
      2 #include "lib.h"
      3 #include "draw.h"
      4 
      5 int
      6 rectclip(Rectangle *rp, Rectangle b)		/* first by reference, second by value */
      7 {
      8 	Rectangle *bp = &b;
      9 	/*
     10 	 * Expand rectXrect() in line for speed
     11 	 */
     12 	if((rp->min.x<bp->max.x && bp->min.x<rp->max.x &&
     13 	    rp->min.y<bp->max.y && bp->min.y<rp->max.y)==0)
     14 		return 0;
     15 	/* They must overlap */
     16 	if(rp->min.x < bp->min.x)
     17 		rp->min.x = bp->min.x;
     18 	if(rp->min.y < bp->min.y)
     19 		rp->min.y = bp->min.y;
     20 	if(rp->max.x > bp->max.x)
     21 		rp->max.x = bp->max.x;
     22 	if(rp->max.y > bp->max.y)
     23 		rp->max.y = bp->max.y;
     24 	return 1;
     25 }