reanimate/examples/doc_cividis.hs
David Himmelstrup eb89cac14c Add colormaps to documentation.
Former-commit-id: d9db76c4f0715800ef6f94e6618d6682a2c8112b
2019-09-29 10:06:24 +08:00

18 lines
520 B
Haskell

#!/usr/bin/env stack
-- stack runghc --package reanimate
module Main(main) where
import Codec.Picture
import Reanimate
import Reanimate.Builtin.Documentation
main :: IO ()
main = reanimate $ docEnv $ animate $ const $ mkColorMap cividis
mkColorMap :: (Double -> PixelRGB8) -> SVG
mkColorMap f = center $ scaleToSize screenWidth screenHeight $ embedImage img
where
width = 256
height = 1
img = generateImage pixelRenderer width height
pixelRenderer x _y = f (fromIntegral x / fromIntegral (width-1))