39 lines
1.3 KiB
Haskell
39 lines
1.3 KiB
Haskell
{-# OPTIONS_HADDOCK ignore-exports #-}
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module Graphics.Diagram.Gif where
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import Algebra.VectorTypes
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import Algorithms.ConvexHull.GrahamScan
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import Codec.Picture.Gif
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import qualified Data.ByteString.Char8 as B
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import Data.Monoid
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import Diagrams.Backend.Cairo
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import Diagrams.Prelude hiding ((<>))
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import Graphics.Diagram.Plotter
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import Graphics.Diagram.Types
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import Parser.Meshparser
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-- |Return a list of tuples used by 'gifMain' to generate an animated gif.
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gifDiag :: DiagProp -> [PT] -> [(Diagram Cairo R2, GifDelay)]
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gifDiag p xs =
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fmap ((\x -> (x, 50)) . (<> nonChDiag))
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(upperHullList
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<> fmap (<> last upperHullList) lowerHullList
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<> [mkDiag (mconcat [convexHPText, convexHP, convexHLs])
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p{ showCoordText = True } (Object xs)])
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where
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upperHullList = mkGifDiag convexHStepsLs p purple grahamUHSteps xs
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lowerHullList = mkGifDiag convexHStepsLs p orange grahamLHSteps xs
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-- add the x-axis and the other default stuff
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nonChDiag =
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mconcat .
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fmap (\x -> mkDiag x p (Object xs)) $
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[coordPoints, plotterBG]
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-- |Same as gifDiag, except that it takes a string containing the
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-- mesh file content instead of the the points.
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gifDiagS :: DiagProp -> B.ByteString -> [(Diagram Cairo R2, GifDelay)]
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gifDiagS p = gifDiag p . filterValidPT p . meshToArr
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