Noise Algorithm 2

 

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Adds random noise to an image. theImage - image object colorize - true or false. Either creates gray or colour noise theBlend - the level of blending to do. Value between 0-255 theInk - can apply an ink to the overlaying of the noise.

on Noise (theImage, colorize, theBlend, theInk)      theWidth = theImage.width - 1   theHeight = theImage.height - 1   anImage = theImage.duplicate()   if colorize then     newImage = image(anImage.width, anImage.height, 8)   else     newImage = image(anImage.width, anImage.height, 8, #grayscale)   end if      repeat with y1 = 0 to theHeight       repeat with x1 = 0 to theWidth       rnd = random(255)       newImage.setPixel(point(x1,y1), color(rnd))     end repeat   end repeat      anImage.copyPixels(newImage, anImage.rect, anImage.rect, [#ink: theInk, #blendLevel: theBlend])   return anImage    end