1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164
/**
* @author Richard Davey <rich@photonstorm.com>
* @copyright 2014 Photon Storm Ltd.
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
* This is a base Filter template to use for any Phaser filter development.
*
* @class Phaser.Filter
* @constructor
* @param {Phaser.Game} game - A reference to the currently running game.
* @param {Object} uniforms - Uniform mappings object
* @param {Array} fragmentSrc - The fragment shader code.
*/
Phaser.Filter = function (game, uniforms, fragmentSrc) {
/**
* @property {Phaser.Game} game - A reference to the currently running game.
*/
this.game = game;
/**
* @property {number} type - The const type of this object, either Phaser.WEBGL_FILTER or Phaser.CANVAS_FILTER.
* @default
*/
this.type = Phaser.WEBGL_FILTER;
/**
* An array of passes - some filters contain a few steps this array simply stores the steps in a linear fashion.
* For example the blur filter has two passes blurX and blurY.
* @property {array} passes - An array of filter objects.
* @private
*/
this.passes = [this];
/**
* @property {array} shaders - Array an array of shaders.
* @private
*/
this.shaders = [];
/**
* @property {boolean} dirty - Internal PIXI var.
* @default
*/
this.dirty = true;
/**
* @property {number} padding - Internal PIXI var.
* @default
*/
this.padding = 0;
/**
* @property {object} uniforms - Default uniform mappings.
*/
this.uniforms = {
time: { type: '1f', value: 0 },
resolution: { type: '2f', value: { x: 256, y: 256 }},
mouse: { type: '2f', value: { x: 0.0, y: 0.0 }}
};
/**
* @property {array} fragmentSrc - The fragment shader code.
*/
this.fragmentSrc = fragmentSrc || [];
};
Phaser.Filter.prototype = {
/**
* Should be over-ridden.
* @method Phaser.Filter#init
*/
init: function () {
// This should be over-ridden. Will receive a variable number of arguments.
},
/**
* Set the resolution uniforms on the filter.
* @method Phaser.Filter#setResolution
* @param {number} width - The width of the display.
* @param {number} height - The height of the display.
*/
setResolution: function (width, height) {
this.uniforms.resolution.value.x = width;
this.uniforms.resolution.value.y = height;
},
/**
* Updates the filter.
* @method Phaser.Filter#update
* @param {Phaser.Pointer} [pointer] - A Pointer object to use for the filter. The coordinates are mapped to the mouse uniform.
*/
update: function (pointer) {
if (typeof pointer !== 'undefined')
{
if (pointer.x > 0)
{
this.uniforms.mouse.x = pointer.x.toFixed(2);
}
if (pointer.y > 0)
{
this.uniforms.mouse.y = pointer.y.toFixed(2);
}
}
this.uniforms.time.value = this.game.time.totalElapsedSeconds();
},
/**
* Clear down this Filter and null out references
* @method Phaser.Filter#destroy
*/
destroy: function () {
this.game = null;
}
};
Phaser.Filter.prototype.constructor = Phaser.Filter;
/**
* @name Phaser.Filter#width
* @property {number} width - The width (resolution uniform)
*/
Object.defineProperty(Phaser.Filter.prototype, 'width', {
get: function() {
return this.uniforms.resolution.value.x;
},
set: function(value) {
this.uniforms.resolution.value.x = value;
}
});
/**
* @name Phaser.Filter#height
* @property {number} height - The height (resolution uniform)
*/
Object.defineProperty(Phaser.Filter.prototype, 'height', {
get: function() {
return this.uniforms.resolution.value.y;
},
set: function(value) {
this.uniforms.resolution.value.y = value;
}
});