points_wev8.js
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/*
Copyright (c) 2004-2005, 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));
}
};