/*	Copyright (c) 2004-2006, The Dojo Foundation	All Rights Reserved.	Licensed under the Academic Free License version 2.1 or above OR the	modified BSD license. For more information on Dojo licensing, see:		http://dojotoolkit.org/community/licensing.shtml*/dojo.provide("dojo.math.points");dojo.require("dojo.math");// TODO: add a Point class?dojo.math.points = {	translate: function(a, b) {		if( a.length != b.length ) {			dojo.raise("dojo.math.translate: points not same size (a:[" + a + "], b:[" + b + "])");		}		var c = new Array(a.length);		for(var i = 0; i < a.length; i++) {			c[i] = a[i] + b[i];		}		return c;	},	midpoint: function(a, b) {		if( a.length != b.length ) {			dojo.raise("dojo.math.midpoint: points not same size (a:[" + a + "], b:[" + b + "])");		}		var c = new Array(a.length);		for(var i = 0; i < a.length; i++) {			c[i] = (a[i] + b[i]) / 2;		}		return c;	},	invert: function(a) {		var b = new Array(a.length);		for(var i = 0; i < a.length; i++) { b[i] = -a[i]; }		return b;	},	distance: function(a, b) {		return Math.sqrt(Math.pow(b[0]-a[0], 2) + Math.pow(b[1]-a[1], 2));	}};