/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h>#include <draw.h> voidborder(Image *im, Rectangle r, int i, Image *color, Point sp){	if(i < 0){		r = insetrect(r, i);		sp = addpt(sp, Pt(i,i));		i = -i;	}	draw(im, Rect(r.min.x, r.min.y, r.max.x, r.min.y+i),		color, nil, sp);	draw(im, Rect(r.min.x, r.max.y-i, r.max.x, r.max.y),		color, nil, Pt(sp.x, sp.y+Dy(r)-i));	draw(im, Rect(r.min.x, r.min.y+i, r.min.x+i, r.max.y-i),		color, nil, Pt(sp.x, sp.y+i));	draw(im, Rect(r.max.x-i, r.min.y+i, r.max.x, r.max.y-i),		color, nil, Pt(sp.x+Dx(r)-i, sp.y+i));}