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Add ol.vec.Mat4.makeTransform2D

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Tom Payne
2013-12-01 21:20:55 +01:00
parent b3473c3cba
commit 1cb56d02ac
1 changed files with 30 additions and 0 deletions
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30
src/ol/vec/mat4.js
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@@ -3,6 +3,36 @@ goog.provide('ol.vec.Mat4');
goog.require('goog.vec.Mat4');
/**
* @param {!goog.vec.Mat4.Number} mat Matrix.
* @param {number} translateX1 Translate X1.
* @param {number} translateY1 Translate Y1.
* @param {number} scaleX Scale X.
* @param {number} scaleY Scale Y.
* @param {number} rotation Rotation.
* @param {number} translateX2 Translate X2.
* @param {number} translateY2 Translate Y2.
* @return {!goog.vec.Mat4.Number} Matrix.
*/
ol.vec.Mat4.makeTransform2D = function(mat, translateX1, translateY1,
scaleX, scaleY, rotation, translateX2, translateY2) {
goog.vec.Mat4.makeIdentity(mat);
if (translateX1 !== 0 || translateY1 !== 0) {
goog.vec.Mat4.translate(mat, translateX1, translateY1, 0);
}
if (scaleX != 1 || scaleY != 1) {
goog.vec.Mat4.scale(mat, scaleX, scaleY, 1);
}
if (rotation !== 0) {
goog.vec.Mat4.rotateZ(mat, rotation);
}
if (translateX2 !== 0 || translateY2 !== 0) {
goog.vec.Mat4.translate(mat, translateX2, translateY2, 0);
}
return mat;
};
/**
* Returns true if mat1 and mat2 represent the same 2D transformation.
* @param {goog.vec.Mat4.AnyType} mat1 Matrix 1.