35 lines
933 B
Plaintext
35 lines
933 B
Plaintext
greyedColor = function(colr)
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clist = color.toList(colr)
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lum = [0.2126, 0.7152, 0.0722]
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red = clist[0] * lum[0]
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green = clist[1] * lum[1]
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blue = clist[2] * lum[2]
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grey = red + green + blue
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return color.fromList([grey, grey, grey, clist[3]])
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end function
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toGreyScale = function(img)
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greyImg = Image.create(img.width, img.height)
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for x in range(0, img.width - 1)
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for y in range(0, img.height - 1)
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greyed = greyedColor(img.pixel(x, y))
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greyImg.setPixel x, y, greyed
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end for
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end for
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return greyImg
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end function
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clear
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// The turtle and color wheel images are included with MiniMicro
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turtle = file.loadImage("/sys/pics/animals/turtle.png")
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greyTurtle = toGreyScale(turtle)
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gfx.drawImage turtle, 0, 0
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gfx.drawImage greyTurtle, turtle.width, 0
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colorWheel = file.loadImage("/sys/pics/ColorWheel.png")
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greyWheel = toGreyScale(colorWheel)
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gfx.drawImage colorWheel, 0, 320
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gfx.drawImage greyWheel, greyWheel.width, 320
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