1 /****************************************************************************
  2  Copyright (c) 2011-2012 cocos2d-x.org
  3  Copyright (c) 2013-2014 Chukong Technologies Inc.
  4 
  5  http://www.cocos2d-x.org
  6 
  7 
  8  Permission is hereby granted, free of charge, to any person obtaining a copy
  9  of this software and associated documentation files (the "Software"), to deal
 10  in the Software without restriction, including without limitation the rights
 11  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 12  copies of the Software, and to permit persons to whom the Software is
 13  furnished to do so, subject to the following conditions:
 14 
 15  The above copyright notice and this permission notice shall be included in
 16  all copies or substantial portions of the Software.
 17 
 18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 19  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 20  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 21  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 22  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 23  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 24  THE SOFTWARE.
 25  ****************************************************************************/
 26 
 27 /**
 28  * cc.visibleRect is a singleton object which defines the actual visible rect of the current view,
 29  * it should represent the same rect as cc.view.getViewportRect()
 30  *
 31  * @property {cc.Point}     topLeft         - Top left coordinate of the screen related to the game scene
 32  * @property {cc.Point}     topRight        - Top right coordinate of the screen related to the game scene
 33  * @property {cc.Point}     top             - Top center coordinate of the screen related to the game scene
 34  * @property {cc.Point}     bottomLeft      - Bottom left coordinate of the screen related to the game scene
 35  * @property {cc.Point}     bottomRight     - Bottom right coordinate of the screen related to the game scene
 36  * @property {cc.Point}     bottom          - Bottom center coordinate of the screen related to the game scene
 37  * @property {cc.Point}     center          - Center coordinate of the screen related to the game scene
 38  * @property {cc.Point}     left            - Left center coordinate of the screen related to the game scene
 39  * @property {cc.Point}     right           - Right center coordinate of the screen related to the game scene
 40  * @property {Number}       width           - Width of the screen
 41  * @property {Number}       height          - Height of the screen
 42  *
 43  * @class
 44  * @name cc.visibleRect
 45  */
 46 cc.visibleRect = {
 47     topLeft:cc.p(0,0),
 48     topRight:cc.p(0,0),
 49     top:cc.p(0,0),
 50     bottomLeft:cc.p(0,0),
 51     bottomRight:cc.p(0,0),
 52     bottom:cc.p(0,0),
 53     center:cc.p(0,0),
 54     left:cc.p(0,0),
 55     right:cc.p(0,0),
 56     width:0,
 57     height:0,
 58 
 59     /**
 60      * initialize
 61      * @param {cc.Rect} visibleRect
 62      */
 63     init:function(visibleRect){
 64 
 65         var w = this.width = visibleRect.width;
 66         var h = this.height = visibleRect.height;
 67         var l = visibleRect.x,
 68             b = visibleRect.y,
 69             t = b + h,
 70             r = l + w;
 71 
 72         //top
 73         this.topLeft.x = l;
 74         this.topLeft.y = t;
 75         this.topRight.x = r;
 76         this.topRight.y = t;
 77         this.top.x = l + w/2;
 78         this.top.y = t;
 79 
 80         //bottom
 81         this.bottomLeft.x = l;
 82         this.bottomLeft.y = b;
 83         this.bottomRight.x = r;
 84         this.bottomRight.y = b;
 85         this.bottom.x = l + w/2;
 86         this.bottom.y = b;
 87 
 88         //center
 89         this.center.x = l + w/2;
 90         this.center.y = b + h/2;
 91 
 92         //left
 93         this.left.x = l;
 94         this.left.y = b + h/2;
 95 
 96         //right
 97         this.right.x = r;
 98         this.right.y = b + h/2;
 99     }
100 };