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21 lines
478 B
JavaScript
21 lines
478 B
JavaScript
// Aseprite
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// Copyright (C) 2015-2017 by David Capello
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var col = app.pixelColor
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var img = app.activeImage
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for (var y=0; y<img.height; ++y) {
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for (var x=0; x<img.width; ++x) {
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var c = img.getPixel(x, y)
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var v = (col.rgbaR(c)+
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col.rgbaG(c)+
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col.rgbaB(c))/3
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img.putPixel(x, y,
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col.rgba(col.rgbaR(c),
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col.rgbaG(c),
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col.rgbaB(c),
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255-v))
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}
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}
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