52 lines
1.2 KiB
JavaScript
52 lines
1.2 KiB
JavaScript
function Filter_Sharpen()
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{
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Filter.call(this);
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this.parameters = [];
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this.render = function(cmd)
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{
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var imageObj = new Image();
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imageObj.src = ronin.surface.active_layer.element.toDataURL('image/png');
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var w = ronin.surface.size.width;
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var h = ronin.surface.size.height;
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var context = ronin.surface.active_layer.context();
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var originalData = context.getImageData(0, 0, w*2, h*2);
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var data = originalData.data;
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var newImage = context.getImageData(0, 0, w*2, h*2);
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var weight_map = [
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-2, 0, -2,
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0, 16, 0,
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-2, 0, -2
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];
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for(var i = 0; i < data.length; i += 4) {
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var p = i / 4;
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var x = (p % originalData.width);
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var y = parseInt(p/originalData.width);
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var average = this.get_neighbors_average(originalData,x,y,weight_map);
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newImage.data[i] = parseInt(average.r);
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newImage.data[i+1] = parseInt(average.g);
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newImage.data[i+2] = parseInt(average.b);
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}
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ronin.surface.active_layer.clear();
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context.putImageData(newImage, 0, 0);
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}
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this.preview = function(cmd)
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{
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}
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this.draw = function(context = this.context(), value, position)
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{
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}
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}
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