/*
* ColorMatrixFilter
* Visit http://createjs.com/ for documentation, updates and examples.
*
* Copyright (c) 2010 gskinner.com, inc.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* @module EaselJS
*/
// namespace:
this.createjs = this.createjs||{};
(function() {
"use strict";
// constructor:
/**
* Allows you to carry out complex color operations such as modifying saturation, brightness, or inverting. See the
* {{#crossLink "ColorMatrix"}}{{/crossLink}} for more information on changing colors. For an easier color transform,
* consider the {{#crossLink "ColorFilter"}}{{/crossLink}}.
*
*
Example
* This example creates a red circle, inverts its hue, and then saturates it to brighten it up.
*
* var shape = new createjs.Shape().set({x:100,y:100});
* shape.graphics.beginFill("#ff0000").drawCircle(0,0,50);
*
* var matrix = new createjs.ColorMatrix().adjustHue(180).adjustSaturation(100);
* shape.filters = [
* new createjs.ColorMatrixFilter(matrix)
* ];
*
* shape.cache(-50, -50, 100, 100);
*
* Example
* This example uses a preset to generate a sepia photograph effect
*
* var shape = new createjs.Shape().set({x:100,y:100});
* shape.graphics.beginFill("#ff0000").drawCircle(0,0,50);
*
* shape.filters = [
* new createjs.ColorMatrixFilter( createjs.ColorMatrix.createSepiaPreset() )
* ];
*
* shape.cache(-50, -50, 100, 100);
*
* See {{#crossLink "Filter"}}{{/crossLink}} for an more information on applying filters.
* @class ColorMatrixFilter
* @constructor
* @extends Filter
* @param {Array | ColorMatrix} matrix A 4x5 matrix describing the color operation to perform. See also the {{#crossLink "ColorMatrix"}}{{/crossLink}}
* class.
**/
function ColorMatrixFilter(matrix) {
this.Filter_constructor();
// public properties:
/**
* A 4x5 matrix describing the color operation to perform. See also the {{#crossLink "ColorMatrix"}}{{/crossLink}}
* @property matrix
* @type Array | ColorMatrix
**/
this.matrix = matrix;
this.FRAG_SHADER_BODY = (
"uniform mat4 uColorMatrix;" +
"uniform vec4 uColorMatrixOffset;" +
"void main(void) {" +
"vec4 color = texture2D(uSampler, vTextureCoord);" +
"mat4 m = uColorMatrix;" +
"vec4 newColor = vec4(" +
"color.r*m[0][0] + color.g*m[0][1] + color.b*m[0][2] + color.a*m[0][3]," +
"color.r*m[1][0] + color.g*m[1][1] + color.b*m[1][2] + color.a*m[1][3]," +
"color.r*m[2][0] + color.g*m[2][1] + color.b*m[2][2] + color.a*m[2][3]," +
"color.r*m[3][0] + color.g*m[3][1] + color.b*m[3][2] + color.a*m[3][3]" +
");" +
"gl_FragColor = newColor + uColorMatrixOffset;" +
"}"
);
}
var p = createjs.extend(ColorMatrixFilter, createjs.Filter);
// TODO: deprecated
// p.initialize = function() {}; // searchable for devs wondering where it is. REMOVED. See docs for details.
// Docced in superclass
p.shaderParamSetup = function(gl, stage, shaderProgram) {
var mat = this.matrix;
var colorMatrix = new Float32Array([
mat[0],mat[1],mat[2],mat[3],
mat[5],mat[6],mat[7],mat[8],
mat[10],mat[11],mat[12],mat[13],
mat[15],mat[16],mat[17],mat[18]
]);
gl.uniformMatrix4fv(
gl.getUniformLocation(shaderProgram, "uColorMatrix"),
false, colorMatrix
);
gl.uniform4f(
gl.getUniformLocation(shaderProgram, "uColorMatrixOffset"),
mat[4]/255, mat[9]/255, mat[14]/255, mat[19]/255
);
};
// public methods:
// Docced in superclass
p.toString = function() {
return "[ColorMatrixFilter]";
};
// Docced in superclass
p.clone = function() {
return new ColorMatrixFilter(this.matrix);
};
// private methods:
// Docced in superclass
p._applyFilter = function(imageData) {
var data = imageData.data;
var l = data.length;
var r,g,b,a;
var mtx = this.matrix;
var m0 = mtx[0], m1 = mtx[1], m2 = mtx[2], m3 = mtx[3], m4 = mtx[4];
var m5 = mtx[5], m6 = mtx[6], m7 = mtx[7], m8 = mtx[8], m9 = mtx[9];
var m10 = mtx[10], m11 = mtx[11], m12 = mtx[12], m13 = mtx[13], m14 = mtx[14];
var m15 = mtx[15], m16 = mtx[16], m17 = mtx[17], m18 = mtx[18], m19 = mtx[19];
for (var i=0; i