void
spiral(Client *c, float fact, XRectangle *r, XRectangle *rp) {
	static int pos = 1;
	float f = fact == 1 ? 1 : 0.5;

	switch(pos) {
		case 0:  /* left */
			rp->x      = r->x;
			rp->y      = r->y;
			rp->width  = r->width * f;
			rp->height = r->height;
			if(c)
				resize(c, rp->x, rp->y, rp->width - (2*c->bw), rp->height - (2*c->bw), False);
			r->x      += c ? WIDTH(c) : rp->width;
			r->width  -= c ? WIDTH(c) : rp->width;
			pos = 1;
			break;
		case 1:  /* top */
			rp->x      = r->x;
			rp->y      = r->y;
			rp->width  = r->width;
			rp->height = r->height * f;
			if(c)
				resize(c, rp->x, rp->y, rp->width - (2*c->bw), rp->height - (2*c->bw), False);
			r->y      += c ? HEIGHT(c) : rp->height;
			r->height -= c ? HEIGHT(c) : rp->height;
			pos = 2;
			break;
		case 2:  /* right */
			rp->x      = r->x + r->width * (1 - f);
			rp->y      = r->y;
			rp->width  = r->width * f;
			rp->height = r->height;
			if(c)
				resize(c, rp->x, rp->y, rp->width - (2*c->bw), rp->height - (2*c->bw), False);
			r->width  -= c ? WIDTH(c) : rp->width;
			pos = 3;
			break;
		case 3:  /* bottom */
			rp->x      = r->x;
			rp->y      = r->y + r->height * (1 -f);
			rp->width  = r->width;
			rp->height = r->height * f;
			if(c)
				resize(c, rp->x, rp->y, rp->width - (2*c->bw), rp->height - (2*c->bw), False);
			r->height -= c ? HEIGHT(c) : rp->height;
			pos = 0;
			break;
	}

	if(fact == 1)
		pos = 1;  /* reset to initial value */
}