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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
'use strict';
base.require('base.rect');
base.exportTo('cc', function() {
/**
* @constructor
*/
function Region() {
this.rects = [];
}
Region.fromArray = function(array) {
if (array.length % 4 != 0)
throw new Error('Array must consist be a multiple of 4 in length');
var r = new Region();
for (var i = 0; i < array.length; i += 4) {
r.rects.push(base.Rect.fromXYWH(array[i], array[i + 1],
array[i + 2], array[i + 3]));
}
return r;
}
/**
* @return {Region} If array is undefined, returns an empty region. Otherwise
* returns Region.fromArray(array).
*/
Region.fromArrayOrUndefined = function(array) {
if (array === undefined)
return new Region();
return Region.fromArray(array);
};
Region.prototype = {
__proto__: Region.prototype,
rectIntersects: function(r) {
for (var i = 0; i < this.rects.length; i++) {
if (this.rects[i].intersects(r))
return true;
}
return false;
}
};
return {
Region: Region
};
});
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