53 lines
1.1 KiB
JavaScript
53 lines
1.1 KiB
JavaScript
function Filter(element)
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{
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Module.call(this);
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this.active = function(cmd)
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{
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if(cmd.content.length < 1){ return; }
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var p = cmd.content;
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var filter_name = p[0];
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p.shift();
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switch(filter_name) {
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case "saturation":
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this.filter_saturation(p);
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break;
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}
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}
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this.passive = function(cmd)
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{
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}
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this.hint = function(cmd)
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{
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return "Filter: ";
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}
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// Filters
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this.filter_saturation = function()
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{
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var imgPixels = this.pixels();
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for(var y = 0; y < imgPixels.height; y++){
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for(var x = 0; x < imgPixels.width; x++){
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var i = (y * 4) * imgPixels.width + x * 4;
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var avg = (imgPixels.data[i] + imgPixels.data[i + 1] + imgPixels.data[i + 2]) / 3;
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imgPixels.data[i] = avg;
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imgPixels.data[i + 1] = avg;
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imgPixels.data[i + 2] = avg;
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}
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}
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ronin.canvas.clear();
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ronin.canvas.context().putImageData(imgPixels, 0, 0, 0, 0, imgPixels.width, imgPixels.height);
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}
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//
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this.pixels = function()
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{
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return ronin.canvas.context().getImageData(0,0,ronin.canvas.element.width,ronin.canvas.element.height);
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}
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} |