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- #include "lib9.h"
- #include "draw.h"
- int
- rectclip(Rectangle *rp, Rectangle b) /* first by reference, second by value */
- {
- Rectangle *bp = &b;
- /*
- * Expand rectXrect() in line for speed
- */
- if((rp->min.x<bp->max.x && bp->min.x<rp->max.x &&
- rp->min.y<bp->max.y && bp->min.y<rp->max.y)==0)
- return 0;
- /* They must overlap */
- if(rp->min.x < bp->min.x)
- rp->min.x = bp->min.x;
- if(rp->min.y < bp->min.y)
- rp->min.y = bp->min.y;
- if(rp->max.x > bp->max.x)
- rp->max.x = bp->max.x;
- if(rp->max.y > bp->max.y)
- rp->max.y = bp->max.y;
- return 1;
- }
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