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Wibbles to bazier.

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This commit is contained in:
David 2019-02-15 20:41:37 +01:00
commit 8cc7e76efc
2 changed files with 10 additions and 12 deletions
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10
src/Reanimate/Examples.hs
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@ -350,7 +350,7 @@ latex_basic = proc () -> do
text = latex "\\sum_{k=1}^\\infty {1 \\over k^2} = {\\pi^2 \\over 6}"
bezier :: Ani ()
bezier = adjustSpeed 0.5 $ proc () -> do
bezier = adjustSpeed 0.4 $ proc () -> do
emit -< rect_ [width_ "100%", height_ "100%", fill_ "black"]
follow
[ orderN [pointA, pointB]
@ -375,18 +375,16 @@ bezier = adjustSpeed 0.5 $ proc () -> do
orderN lst = defineAnimation $ proc () -> do
duration 2 -< ()
s <- signalOscillate 0 1 -< ()
emit -< orderN' (map const lst) s
emit -< primaryCircleAt =<< orderN' (map const lst) s <* mapM_ secondaryCircleAt lst
orderN' [a] s = do
renderPath $ take (round $ 1000*s) $ approxFnData 1000 $ \idx -> a idx
primaryCircleAt (a s)
return (a s)
orderN' lst s = do
forM_ (zip lst (tail lst)) $ \(a,b) -> renderPath $
approxFnData 1000 $ \idx ->
between (a s) (b s) idx
let middlePoints = map (\(a,b) -> \idx -> between (a idx) (b idx) idx) (zip lst (tail lst))
mapM_ secondaryCircleAt $ map ($s) middlePoints
mapM_ secondaryCircleAt $ map ($s) lst
orderN' middlePoints s
orderN' middlePoints s <* mapM_ secondaryCircleAt (map ($s) middlePoints)
secondaryCircleAt (x,y) = circle_ [num_ cx_ x, num_ cy_ y, num_ r_ 3, fill_ "green"]
primaryCircleAt (x,y) = circle_ [num_ cx_ x, num_ cy_ y, num_ r_ 3, fill_ "red"]