19 lines
508 B
Text
19 lines
508 B
Text
on rgbToGrayscaleImageFast (img)
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res = image(img.width, img.height, 8)
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res.paletteRef = #grayScale
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res.copyPixels(img, img.rect, img.rect)
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return res
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end
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on rgbToGrayscaleImageCustom (img)
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res = image(img.width, img.height, 8)
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res.paletteRef = #grayScale
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repeat with x = 0 to img.width-1
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repeat with y = 0 to img.height-1
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c = img.getPixel(x,y)
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n = c.red*0.2126 + c.green*0.7152 + c.blue*0.0722
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res.setPixel(x,y, color(256-n))
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end repeat
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end repeat
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return res
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end
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