/**
 * Flade - Flash Dynamics Engine
 * Release 0.4 alpha 
 * Rectangle class
 * Copyright 2004, 2005 Alec Cove
 * 
 * This file is part of Flade. The Flash Dynamics Engine. 
 *	
 * Flade is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Flade is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Flade; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Flash is a registered trademark of Macromedia
 */

Rectangle = function(pSystem, center, rWidth, rHeight) {
	
	// top left
	var p0 = psystem.addParticle(center.x - rWidth / 2, center.y - rHeight / 2);
	// top right
	var p1 = psystem.addParticle(center.x + rWidth / 2, center.y - rHeight / 2);
	// bottom right
	var p2 = psystem.addParticle(center.x + rWidth / 2, center.y + rHeight / 2);
	// bottom left
	var p3 = psystem.addParticle(center.x - rWidth / 2, center.y + rHeight / 2);
	
	// edges
	psystem.addConstraint(p0, p1);
	psystem.addConstraint(p1, p2);
	psystem.addConstraint(p2, p3);
	psystem.addConstraint(p3, p0);
	
	// crossing braces
	psystem.addConstraint(p0, p2);
	psystem.addConstraint(p1, p3);
	
	this.p0 = p0;
	this.p1 = p1;
	this.p2 = p2;
	this.p3 = p3;
}