Subversion Repositories planix.SVN

#include <u.h>
#include <libc.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;
}