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Implement Matrix#skew()

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Jürg Lehni 2013-12-07 05:20:55 +01:00
parent 268ecad00b
commit cb3cc84dae
1 changed files with 28 additions and 0 deletions
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28
src/basic/Matrix.js
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@ -293,6 +293,34 @@ var Matrix = Base.extend(/** @lends Matrix# */{
return this;
},
/**
* Concatenates this transform with a skew transformation.
*
* @name Matrix#skew
* @function
* @param {Point} skew the skew angles in x and y direction in degrees
* @param {Point} [center] the center for the skew transformation
* @return {Matrix} this affine transform
*/
/**
* Concatenates this transform with a skew transformation.
*
* @name Matrix#skew
* @function
* @param {Number} hor the horizontal skew angle in degrees
* @param {Number} ver the vertical skew angle in degrees
* @param {Point} [center] the center for the skew transformation
* @return {Matrix} this affine transform
*/
skew: function(/* skew, center */) {
var skew = Point.read(arguments),
center = Point.read(arguments, 0, 0, { readNull: true }),
toRadians = Math.PI / 180,
shear = new Point(Math.tan(skew.x * toRadians),
Math.tan(skew.y * toRadians));
return this.shear(shear, center);
},
/**
* Concatenates an affine transform to this transform.
*