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 Permission is hereby granted, free of charge, to any person obtaining a copy 8 of this software and associated documentation files (the "Software"), to deal 9 in the Software without restriction, including without limitation the rights 10 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 copies of the Software, and to permit persons to whom the Software is 12 furnished to do so, subject to the following conditions: 13 14 The above copyright notice and this permission notice shall be included in 15 all copies or substantial portions of the Software. 16 17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 20 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 THE SOFTWARE. 24 ****************************************************************************/ 25 26 /** 27 * @class ccs.TransformHelp 28 * @extend ccs.Class 29 */ 30 ccs.TransformHelp = ccs.TransformHelp || ccs.Class.extend({}); 31 32 ccs.TransformHelp.helpMatrix1 = cc.affineTransformMake(1, 0, 0, 1, 0, 0); 33 ccs.TransformHelp.helpMatrix2 = cc.affineTransformMake(1, 0, 0, 1, 0, 0); 34 ccs.TransformHelp.helpPoint1 = cc.p(0, 0); 35 ccs.TransformHelp.helpPoint2 = cc.p(0, 0); 36 ccs.TransformHelp.helpParentNode = {}; 37 38 /** 39 * @function 40 * @static 41 * @param {ccs.BaseData} bone 42 * @return {cc.AffineTransform} 43 * Constructor 44 */ 45 ccs.TransformHelp.transformFromParent = function (bone, parentNode) { 46 this.nodeToMatrix(bone, this.helpMatrix1); 47 this.nodeToMatrix(parentNode, this.helpMatrix2); 48 49 this.helpMatrix2 = cc.affineTransformInvert(this.helpMatrix2); 50 this.helpMatrix1 = cc.affineTransformConcat(this.helpMatrix1, this.helpMatrix2); 51 52 this.matrixToNode(this.helpMatrix1, bone); 53 }; 54 55 ccs.TransformHelp.transformToParent = function(node, parentNode){ 56 this.nodeToMatrix(node, this.helpMatrix1); 57 this.nodeToMatrix(parentNode, this.helpMatrix2); 58 59 this.helpMatrix1 = cc.affineTransformConcat(this.helpMatrix1, this.helpMatrix2); 60 61 this.matrixToNode(this.helpMatrix1, node); 62 }; 63 64 ccs.TransformHelp.transformFromParentWithoutScale = function(node, parentNode){ 65 // this.helpParentNode.copy(&parentNode); 66 67 for(var p in parentNode){ 68 this.helpParentNode[p] = parentNode[p]; 69 } 70 this.helpParentNode.scaleX = 1; 71 this.helpParentNode.scaleY = 1; 72 73 this.nodeToMatrix(node, this.helpMatrix1); 74 this.nodeToMatrix(this.helpParentNode, this.helpMatrix2); 75 76 this.helpMatrix2 = cc.affineTransformInvert(this.helpMatrix2); 77 this.helpMatrix1 = cc.affineTransformConcat(this.helpMatrix1, this.helpMatrix2); 78 79 this.matrixToNode(this.helpMatrix1, node); 80 }; 81 82 ccs.TransformHelp.transformToParentWithoutScale = function(node, parentNode){ 83 for(var p in parentNode){ 84 this.helpParentNode[p] = parentNode[p]; 85 } 86 this.helpParentNode.scaleX = 1; 87 this.helpParentNode.scaleY = 1; 88 89 this.nodeToMatrix(node, this.helpMatrix1); 90 this.nodeToMatrix(this.helpParentNode, this.helpMatrix2); 91 92 this.helpMatrix1 = cc.affineTransformConcat(this.helpMatrix1, this.helpMatrix2); 93 94 this.matrixToNode(this.helpMatrix1, node); 95 96 }; 97 98 /** 99 * @function 100 * @static 101 * @param {ccs.BaseData} node 102 * @param {cc.AffineTransform} matrix 103 */ 104 ccs.TransformHelp.nodeToMatrix = function (node, matrix) { 105 if (node.skewX == -node.skewY) { 106 var sine = Math.sin(node.skewX); 107 var cosine = Math.cos(node.skewX); 108 matrix.a = node.scaleX * cosine; 109 matrix.b = node.scaleX * -sine; 110 matrix.c = node.scaleY * sine; 111 matrix.d = node.scaleY * cosine; 112 } else { 113 matrix.a = node.scaleX * Math.cos(node.skewY); 114 matrix.b = node.scaleX * Math.sin(node.skewY); 115 matrix.c = node.scaleY * Math.sin(node.skewX); 116 matrix.d = node.scaleY * Math.cos(node.skewX); 117 } 118 matrix.tx = node.x; 119 matrix.ty = node.y; 120 }; 121 122 /** 123 * @function 124 * @static 125 * @param {cc.AffineTransform} matrix 126 * @param {ccs.BaseData} node 127 */ 128 ccs.TransformHelp.matrixToNode = function (matrix, node) { 129 /* 130 * In as3 language, there is a function called "deltaTransformPoint", it calculate a point used give Transform 131 * but not used the tx, ty value. we simulate the function here 132 */ 133 this.helpPoint1.x = 0; 134 this.helpPoint1.y = 1; 135 this.helpPoint1 = cc.pointApplyAffineTransform(this.helpPoint1, matrix); 136 this.helpPoint1.x -= matrix.tx; 137 this.helpPoint1.y -= matrix.ty; 138 139 this.helpPoint2.x = 1; 140 this.helpPoint2.y = 0; 141 this.helpPoint2 = cc.pointApplyAffineTransform(this.helpPoint2, matrix); 142 this.helpPoint2.x -= matrix.tx; 143 this.helpPoint2.y -= matrix.ty; 144 145 node.skewX = -(Math.atan2(this.helpPoint1.y, this.helpPoint1.x) - 1.5707964); //todo 146 //node.skewX = -Math.atan2(this.helpPoint2.y, this.helpPoint2.x); 147 node.skewY = Math.atan2(this.helpPoint2.y, this.helpPoint2.x); 148 node.scaleX = Math.sqrt(matrix.a * matrix.a + matrix.b * matrix.b); 149 node.scaleY = Math.sqrt(matrix.c * matrix.c + matrix.d * matrix.d); 150 node.x = matrix.tx; 151 node.y = matrix.ty; 152 }; 153 154 /** 155 * @function 156 * @static 157 * @param {ccs.BaseData} target 158 * @param {ccs.BaseData} source 159 */ 160 ccs.TransformHelp.nodeConcat = function (target, source) { 161 target.x += source.x; 162 target.y += source.y; 163 target.skewX += source.skewX; 164 target.skewY += source.skewY; 165 target.scaleX += source.scaleX; 166 target.scaleY += source.scaleY; 167 }; 168 169 /** 170 * @function 171 * @static 172 * @param {ccs.BaseData} target 173 * @param {ccs.BaseData} source 174 */ 175 ccs.TransformHelp.nodeSub = function (target, source) { 176 target.x -= source.x; 177 target.y -= source.y; 178 target.skewX -= source.skewX; 179 target.skewY -= source.skewY; 180 target.scaleX -= source.scaleX; 181 target.scaleY -= source.scaleY; 182 };