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57 lines
1.1 KiB
57 lines
1.1 KiB
// Copyright 2015 Yahoo! Inc.
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// Copyrights licensed under the Mit License. See the accompanying LICENSE file for terms.
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/**
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* Image manipulation functions
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*
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* @class PNGImage
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* @submodule Core
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* @type {object}
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*/
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module.exports = {
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/**
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* Rotates the current image 90 degree counter-clockwise
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*
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* @method rotateCCW
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* @return {PNGImage} Rotated image
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*/
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rotateCCW: function () {
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var Class = this.constructor,
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x, y,
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width = this.getWidth(),
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height = this.getHeight(),
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image = Class.createImage(height, width);
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for (x = 0; x < width; x++) {
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for (y = 0; y < height; y++) {
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image.setPixel(y, width - x - 1, this.getPixel(x, y));
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}
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}
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return image;
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},
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/**
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* Rotates the current image 90 degree clockwise
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*
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* @method rotateCW
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* @return {PNGImage} Rotated image
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*/
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rotateCW: function () {
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var Class = this.constructor,
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x, y,
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width = this.getWidth(),
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height = this.getHeight(),
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image = Class.createImage(height, width);
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for (x = 0; x < width; x++) {
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for (y = 0; y < height; y++) {
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image.setPixel(height - y - 1, x, this.getPixel(x, y));
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}
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}
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return image;
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}
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};
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