reanimate/examples/goo.hs
David Himmelstrup ea7829b6fe Add goo example.
Former-commit-id: c9e484d6fac8c33b80c09eee65c114b2c33a0fbd
2019-09-01 11:48:36 +08:00

68 lines
2.4 KiB
Haskell
Executable file

#!/usr/bin/env stack
-- stack --resolver lts-13.14 runghc --package reanimate
{-# LANGUAGE OverloadedStrings #-}
module Main (main) where
import Control.Lens
import Graphics.SvgTree
import Reanimate.Driver (reanimate)
import Reanimate.LaTeX
import Reanimate.Monad
import Reanimate.Svg
import Reanimate.Signal
import Reanimate.Combinators
main :: IO ()
main = reanimate $ autoReverse $ mkAnimation 5 $ do
s <- getSignal $ signalFromTo 0 2 signalLinear
emit $ mkBackground "black"
emit $ FilterTree $ mkFilter "blur"
[FEGaussianBlur $ defaultSvg
& gaussianBlurStdDeviationX .~ Num dev
& filterResult .~ Just "blur"
] & filterWidth .~ pure (Percent 3)
& filterX .~ pure (Percent (-1))
& filterHeight .~ pure (Percent 3)
& filterY .~ pure (Percent (-1))
emit $ FilterTree $ mkFilter "goo"
[FEGaussianBlur $ defaultSvg
& gaussianBlurStdDeviationX .~ Num dev
& filterResult .~ Just "blur"
,FEColorMatrix $ defaultSvg
& colorMatrixType .~ Matrix
& colorMatrixValues .~ "1 0 0 0 0 \
\0 1 0 0 0 \
\0 0 1 0 0 \
\0 0 0 " ++ show (sharpness*2) ++ " -" ++ show sharpness
& filterResult .~ pure "goo"
,FEComposite $ defaultSvg
& compositeIn .~ pure SourceGraphic
& compositeIn2 .~ pure (SourceRef "goo")
& compositeOperator .~ CompositeAtop
] & filterWidth .~ pure (Percent 3)
& filterX .~ pure (Percent (-1))
& filterHeight .~ pure (Percent 3)
& filterY .~ pure (Percent (-1))
emit $ translate 0 (-radius*2) $ withFillColor "red" $ mkGroup
[ translate (s*(-radius)) 0 circ
, translate (s*radius) 0 circ
]
emit $ withFillColor "red" $ mkGroup
[ translate (s*(-radius)) 0 circ
, translate (s*radius) 0 circ
]
& filterRef .~ pure (Ref "goo")
emit $ translate 0 (radius*2) $ withFillColor "red" $ set filterRef (pure $ Ref "blur")
$ mkGroup [ translate (s*(-radius)) 0 circ
, translate (s*radius) 0 circ ]
where
sharpness = 60
dev = 10
radius = 30
circ = CircleTree $ defaultSvg
& circleCenter .~ (Num 0, Num 0)
& circleRadius .~ Num radius
mkFilter :: String -> [FilterElement] -> Filter
mkFilter ident fe = defaultSvg & filterChildren .~ fe & attrId .~ Just ident