module Reanimate.Debug ( traceSVG , traceA , playTraces ) where import Data.IORef import System.IO.Unsafe import Control.Exception import Reanimate.Animation import Reanimate.Svg import Reanimate.LaTeX import Reanimate.Constants import Text.Printf import qualified Data.Text as T {-# NOINLINE traceBuffer #-} traceBuffer :: IORef [Animation] traceBuffer = unsafePerformIO (newIORef []) {-# NOINLINE traceSVG #-} traceSVG :: SVG -> a -> a traceSVG = traceA . staticFrame (recip 60) {-# NOINLINE traceA #-} traceA :: Animation -> a -> a traceA a v = unsafePerformIO $ do modifyIORef' traceBuffer (a :) evaluate v {-# NOINLINE playTraces #-} playTraces :: a -> Animation playTraces v = unsafePerformIO $ do _ <- evaluate v lst <- atomicModifyIORef' traceBuffer (\x -> ([], reverse x)) let n = length lst :: Int return $ foldr seqA (pause 0) [ f `parA` staticFrame (duration f) (counter i n) | (i, f) <- zip [1 :: Int ..] lst ] where counter a b = mkGroup [ withStrokeWidth defaultStrokeWidth $ withStrokeColor "black" $ translate 6.5 4 $ center $ latex $ T.pack $ printf "%d/%d" a b , withStrokeWidth 0 $ withFillColor "white" $ translate 6.5 4 $ center $ latex $ T.pack $ printf "%d/%d" a b ]