| #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; | |
| } |