47 lines
1.1 KiB
JavaScript
47 lines
1.1 KiB
JavaScript
function Filter_Balance()
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{
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Filter.call(this);
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this.parameters = [Color];
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this.render = function(cmd)
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{
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if(!cmd.color()){ return; }
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if(!cmd.color().rgb()){ return; }
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this.draw(ronin.surface.active_layer.context(),cmd.color().rgb());
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}
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this.preview = function(cmd)
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{
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if(!cmd.color()){ return; }
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if(!cmd.color().rgb()){ return; }
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this.draw(ronin.render.layer.context(),cmd.color().rgb());
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}
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this.draw = function(context = this.context(), color_rgb)
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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 originalData = ronin.surface.active_layer.context().getImageData(0, 0, w*2, h*2);
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var data = originalData.data;
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var r = (color_rgb.r / 255) + 0.5;
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var g = (color_rgb.g / 255) + 0.5;
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var b = (color_rgb.b / 255) + 0.5;
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for(var i = 0; i < data.length; i += 4) {
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data[i] = data[i] * r;
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data[i + 1] = data[i + 1] * g;
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data[i + 2] = data[i + 2] * b;
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}
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ronin.render.layer.clear();
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context.putImageData(originalData, 0, 0);
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}
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} |