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