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Add some tests for ColorQuantization and ChangePixelFormat
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scripts/color_quantization.lua
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136
scripts/color_quantization.lua
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-- Copyright (C) 2019-2021 Igara Studio S.A.
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--
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-- This file is released under the terms of the MIT license.
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-- Read LICENSE.txt for more information.
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dofile("./test_utils.lua")
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local rgba = app.pixelColor.rgba
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----------------------------------------------------------------------
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-- app.command.ColorQuantization
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do
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-- One sprite with a background layer
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local s = Sprite(2, 2)
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app.command.BackgroundFromLayer()
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local i = s.cels[1].image
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local p = s.palettes[1]
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assert(#p == 256)
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assert(s.colorMode == ColorMode.RGB)
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app.command.ColorQuantization()
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assert(#p == 1)
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array_to_pixels({ rgba(255, 255, 0), rgba(255, 255, 0),
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rgba(255, 255, 0), rgba(255, 255, 0) }, i)
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app.command.ColorQuantization()
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assert(#p == 1)
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assert(p:getColor(0) == Color(255, 255, 0))
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array_to_pixels({ rgba(255, 0, 0), rgba(255, 0, 0),
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rgba(255, 255, 0), rgba(255, 255, 0) }, i)
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app.command.ColorQuantization()
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assert(#p == 2)
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assert(p:getColor(0) == Color(255, 0, 0))
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assert(p:getColor(1) == Color(255, 255, 0))
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array_to_pixels({ rgba(255, 0, 0), rgba(255, 0, 0),
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rgba(255, 255, 0), rgba(0, 0, 255) }, i)
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app.command.ColorQuantization()
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assert(#p == 3)
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assert(p:getColor(0) == Color(255, 0, 0))
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assert(p:getColor(1) == Color(255, 255, 0))
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assert(p:getColor(2) == Color(0, 0, 255))
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-- Convert the background layer to a transparent layer
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app.command.LayerFromBackground()
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app.command.ColorQuantization{ withAlpha=false }
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assert(#p == 4) -- One extra color for transparent layer
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assert(p:getColor(0) == Color(0, 0, 0))
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assert(p:getColor(1) == Color(255, 0, 0))
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assert(p:getColor(2) == Color(255, 255, 0))
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assert(p:getColor(3) == Color(0, 0, 255))
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app.command.ColorQuantization()
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assert(#p == 4)
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assert(p:getColor(0) == Color(0, 0, 0, 0))
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assert(p:getColor(1) == Color(255, 0, 0))
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assert(p:getColor(2) == Color(255, 255, 0))
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assert(p:getColor(3) == Color(0, 0, 255))
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array_to_pixels({ rgba(0, 0, 0), rgba(255, 0, 0),
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rgba(255, 0, 0), rgba(0, 0, 255) }, i)
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app.command.ColorQuantization{ withAlpha=false }
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assert(#p == 4)
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assert(p:getColor(0) == Color(0, 0, 0))
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assert(p:getColor(1) == Color(0, 0, 0))
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assert(p:getColor(2) == Color(255, 0, 0))
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assert(p:getColor(3) == Color(0, 0, 255))
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app.command.ColorQuantization()
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assert(#p == 4)
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assert(p:getColor(0) == Color(0, 0, 0, 0))
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assert(p:getColor(1) == Color(0, 0, 0))
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assert(p:getColor(2) == Color(255, 0, 0))
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assert(p:getColor(3) == Color(0, 0, 255))
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end
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do
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-- One sprite with a transparent layer + a background layer
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local s = Sprite(2, 2)
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local p = s.palettes[1]
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app.command.BackgroundFromLayer()
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local bg = s.cels[1].image
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local fg = s:newCel(s:newLayer(), 1).image
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assert(#s.frames == 1)
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assert(#s.layers == 2)
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assert(#s.cels == 2)
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array_to_pixels({ rgba(0, 0, 0, 0), rgba(0, 255, 0),
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rgba(255, 0, 0), rgba(0, 0, 0, 0) }, fg)
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array_to_pixels({ rgba(0, 0, 0), rgba(0, 0, 0),
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rgba(0, 0, 0), rgba(0, 0, 255) }, bg)
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app.command.ColorQuantization()
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assert(#p == 5)
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assert(p:getColor(0) == Color(0, 0, 0, 0))
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assert(p:getColor(1) == Color(0, 0, 0))
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assert(p:getColor(2) == Color(0, 255, 0))
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assert(p:getColor(3) == Color(255, 0, 0))
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assert(p:getColor(4) == Color(0, 0, 255))
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end
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----------------------------------------------------------------------
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-- app.command.ChangePixelFormat
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do
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local s = Sprite(2, 2, ColorMode.RGB)
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local p = Palette(4)
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p:setColor(0, Color(0, 0, 0))
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p:setColor(1, Color(101, 90, 200))
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p:setColor(2, Color(102, 91, 201))
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p:setColor(3, Color(103, 92, 203))
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s:setPalette(p)
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app.command.BackgroundFromLayer()
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local bg = s.cels[1].image
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array_to_pixels({ rgba(0, 0, 0), rgba(101, 90, 200),
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rgba(102, 91, 201), rgba(103, 92, 203) }, bg)
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app.command.ChangePixelFormat{ format="indexed", rgbmap="rgb5a3" }
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local bg = s.cels[1].image
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-- Using the 5-bit precision of RGB5A3 will match everything with
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-- the first palette entry.
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expect_img(bg, { 0, 1,
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1, 1 })
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app.undo()
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app.command.ChangePixelFormat{ format="indexed", rgbmap="octree" }
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local bg = s.cels[1].image
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expect_img(bg, { 0, 1,
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2, 3 })
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end
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