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Improve latex example.

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This commit is contained in:
David 2019-02-15 16:04:54 +01:00
commit 832804a857
3 changed files with 15 additions and 5 deletions
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14
src/Reanimate/Examples.hs
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@ -329,9 +329,15 @@ frequencies = proc () -> do
latex_basic :: Ani ()
latex_basic = proc () -> do
duration 1 -< ()
duration 2 -< ()
s <- signalOscillate 0 1 -< ()
emit -< do
rect_ [width_ "100%", height_ "100%", fill_ "black"]
g_ [transform_ $ translate 20 20] $
g_ [transform_ $ scale 4 4, fill_ "white"] $
latex "\\sum_{k=1}^\\infty {1 \\over k^2} = {\\pi^2 \\over 6}"
g_ [transform_ $ translate 20 15] $
g_ [transform_ $ scale 4 4, stroke_ "white", fill_opacity_ "0", stroke_width_ "0.1"] $
text
g_ [transform_ $ translate 20 15] $
g_ [transform_ $ scale 4 4, fill_ "white", num_ fill_opacity_ s] $
text
where
text = latex "\\sum_{k=1}^\\infty {1 \\over k^2} = {\\pi^2 \\over 6}"

6
src/Reanimate/LaTeX.hs
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@ -28,7 +28,11 @@ latexToSVG tex = handle (\(e::SomeException) -> return (failedSvg tex)) $ do
appendFile tex_file tex
appendFile tex_file tex_epilogue
runCmd latex ["-interaction=batchmode", "-halt-on-error", "-output-directory="++tmp_dir, tex_file]
runCmd dvisvgm [dvi_file, "-n","-v", "0", "-o",svg_file]
runCmd dvisvgm [ dvi_file
, "--exact" -- better bboxes.
, "--bbox=1,1" -- increase bbox size.
, "--no-fonts" -- use glyphs instead of fonts.
,"--verbosity=0", "-o",svg_file]
svg_data <- readFile svg_file
evaluate (length svg_data)
return $ toHtmlRaw $ unlines $ drop 1 $ lines svg_data