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#include	<stdio.h>
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#include	"pic.h"
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#include	"y.tab.h"
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obj *boxgen(void)
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{
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	static double prevh = HT;
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	static double prevw = WID;	/* golden mean, sort of */
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	int i, at, battr, with;
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	double ddval, fillval, xwith, ywith;
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	double h, w, x0, y0, x1, y1;
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	obj *p, *ppos;
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	Attr *ap;
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	h = getfval("boxht");
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	w = getfval("boxwid");
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	at = battr = with = 0;
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	ddval = fillval = xwith = ywith = 0;
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	for (i = 0; i < nattr; i++) {
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		ap = &attr[i];
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		switch (ap->a_type) {
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		case HEIGHT:
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			h = ap->a_val.f;
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			break;
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		case WIDTH:
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			w = ap->a_val.f;
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			break;
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		case SAME:
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			h = prevh;
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			w = prevw;
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			break;
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		case WITH:
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			with = ap->a_val.i;	/* corner */
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			break;
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		case AT:
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			ppos = ap->a_val.o;
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			curx = ppos->o_x;
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			cury = ppos->o_y;
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			at++;
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			break;
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		case INVIS:
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			battr |= INVIS;
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			break;
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		case NOEDGE:
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			battr |= NOEDGEBIT;
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			break;
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		case DOT:
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		case DASH:
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			battr |= ap->a_type==DOT ? DOTBIT : DASHBIT;
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			if (ap->a_sub == DEFAULT)
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				ddval = getfval("dashwid");
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			else
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				ddval = ap->a_val.f;
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			break;
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		case FILL:
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			battr |= FILLBIT;
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			if (ap->a_sub == DEFAULT)
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				fillval = getfval("fillval");
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			else
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				fillval = ap->a_val.f;
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			break;
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		case TEXTATTR:
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			savetext(ap->a_sub, ap->a_val.p);
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			break;
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		}
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	}
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	if (with) {
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		switch (with) {
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		case NORTH:	ywith = -h / 2; break;
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		case SOUTH:	ywith = h / 2; break;
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		case EAST:	xwith = -w / 2; break;
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		case WEST:	xwith = w / 2; break;
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		case NE:	xwith = -w / 2; ywith = -h / 2; break;
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		case SE:	xwith = -w / 2; ywith = h / 2; break;
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		case NW:	xwith = w / 2; ywith = -h / 2; break;
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		case SW:	xwith = w / 2; ywith = h / 2; break;
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		}
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		curx += xwith;
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		cury += ywith;
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	}
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	if (!at) {
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		if (isright(hvmode))
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			curx += w / 2;
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		else if (isleft(hvmode))
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			curx -= w / 2;
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		else if (isup(hvmode))
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			cury += h / 2;
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		else
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			cury -= h / 2;
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	}
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	x0 = curx - w / 2;
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	y0 = cury - h / 2;
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	x1 = curx + w / 2;
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	y1 = cury + h / 2;
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	extreme(x0, y0);
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	extreme(x1, y1);
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	p = makenode(BOX, 2);
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	p->o_val[0] = w;
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	p->o_val[1] = h;
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	p->o_attr = battr;
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	p->o_ddval = ddval;
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	p->o_fillval = fillval;
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	dprintf("B %g %g %g %g at %g %g, h=%g, w=%g\n", x0, y0, x1, y1, curx, cury, h, w);
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	if (isright(hvmode))
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		curx = x1;
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	else if (isleft(hvmode))
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		curx = x0;
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	else if (isup(hvmode))
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		cury = y1;
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	else
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		cury = y0;
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	prevh = h;
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	prevw = w;
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	return(p);
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}