wumpus-tree-0.11.0: demo/Demo01.hs
{-# OPTIONS -Wall #-}
-- Note - @main@ is more convoluted than would normally be
-- expected as it supports both sources of glyph metrics - the
-- GhostScript distribution or the Core 14 metrics from Adobe.
--
-- \"Real\" applications would be expected to choose one source.
--
-- I-am-not-a-lawyer, but it does look as though the Adobe font
-- metrics are redistributable, the GhostScript metrics are
-- seemingly redistributable under the same terms as the larger
-- GhostScript distribution.
--
module Demo01 where
import Wumpus.Tree
import Wumpus.Basic.Colour.SVGColours -- package: wumpus-basic
import Wumpus.Basic.FontLoader.AfmLoader
import Wumpus.Basic.FontLoader.GSLoader
import Wumpus.Basic.Graphic
import Wumpus.Basic.SafeFonts
import Wumpus.Core -- package: wumpus-core
import FontLoaderUtils
import Data.Tree hiding ( drawTree )
import System.Directory
-- Note - @main@ prioritizes GhostScript metrics...
main :: IO ()
main = do
(mb_gs, mb_afm) <- processCmdLine default_font_loader_help
createDirectoryIfMissing True "./out/"
case (mb_gs, mb_afm) of
(Just dir, _) -> do { putStrLn "Using GhostScript metrics..."
; loadGSMetrics dir ["Times-Roman"] >>= makePictures
}
(_, Just dir) -> do { putStrLn "Using AFM v4.1 metrics..."
; loadAfmMetrics dir ["Times-Roman"] >>= makePictures
}
_ -> putStrLn default_font_loader_help
makePictures :: BaseGlyphMetrics -> IO ()
makePictures base_metrics = do
--
let pic1 = runDrawingU (makeCtx 18 base_metrics) tree_drawing1
writeEPS "./out/tree01.eps" pic1
writeSVG "./out/tree01.svg" pic1
--
let pic2 = runDrawingU (makeCtx 24 base_metrics) tree_drawing2
writeEPS "./out/tree02.eps" pic2
writeSVG "./out/tree02.svg" pic2
--
let pic3 = runDrawingU (makeCtx 14 base_metrics) tree_drawing3
writeEPS "./out/tree03.eps" pic3
writeSVG "./out/tree03.svg" pic3
--
let pic4 = runDrawingU (makeCtx 24 base_metrics) tree_drawing4
writeEPS "./out/tree04.eps" pic4
writeSVG "./out/tree04.svg" pic4
--
let pic5 = runDrawingU (makeCtx 24 base_metrics) tree_drawing5
writeEPS "./out/tree05.eps" pic5
writeSVG "./out/tree05.svg" pic5
makeCtx :: FontSize -> BaseGlyphMetrics -> DrawingContext
makeCtx sz m = fontface times_roman $ metricsContext sz m
tree_drawing1 :: DTreeDrawing
tree_drawing1 = drawScaledTree charNode (uniformScaling 30) tree1
tree_drawing2 :: DTreeDrawing
tree_drawing2 = drawScaledTree (diskNode red) (uniformScaling 30) tree2
-- This should be drawn in the /family tree/ style...
--
tree_drawing3 :: DTreeDrawing
tree_drawing3 = drawScaledFamilyTree charNode (uniformScaling 30) tree3
tree_drawing4 :: DTreeDrawing
tree_drawing4 = drawScaledTree (circleNode black) (scaleFactors 20 30) tree4
tree_drawing5 :: DTreeDrawing
tree_drawing5 = drawScaledTree (circleNode black) (scaleFactors 20 30) tree5
tree1 :: Tree Char
tree1 = Node 'A' [Node 'B' bs, Node 'F' fs]
where
bs = [Node 'C' [], Node 'D' [], Node 'E' []]
fs = [Node 'G' [Node 'H' [], Node 'I' [], Node 'J' []]]
tree2 :: Tree Char
tree2 = Node 'A' [Node 'B' bs, Node 'F' [], Node 'G' gs]
where
bs = [Node 'C' [], Node 'D' [], Node 'E' []]
gs = [Node 'H' [], Node 'I' [], Node 'J' []]
-- This is the tree from Andrew Kennedy's
-- /Functional Pearl Drawing Trees/
--
-- Currently Wumpus-tree cannot render in the /family tree/ style.
--
tree3 :: Tree Char
tree3 = Node 'A' [a1, a2, a3]
where
a1 = Node 'B' [b1, b2]
a2 = Node 'S' [b3,b4]
a3 = Node 'o' [b5]
b1 = Node 'C' [leaf 'D', c1]
b2 = Node 'P' [leaf 'Q', leaf 'R']
b3 = Node 'T' [leaf 'U', leaf 'V', c2]
b4 = Node 'e' [c3, leaf 'h', c4]
b5 = Node 'p' [c5, c6, leaf '2']
c1 = Node 'E' [d1]
c2 = Node 'W' [d2, d3]
c3 = Node 'f' [leaf 'g']
c4 = Node 'i' [d4]
c5 = Node 'q' [leaf 'r', leaf 's', leaf 't', leaf 'u']
c6 = Node 'v' [leaf 'w', d5, leaf '0', leaf '1']
d1 = Node 'F' [leaf 'G', e1, leaf 'M', e2]
d2 = Node 'X' [leaf 'Y']
d3 = Node 'Z' [leaf 'a', leaf 'b', leaf 'c', leaf 'd']
d4 = Node 'j' [leaf 'k', leaf 'l', leaf 'm', leaf 'n']
d5 = Node 'x' [leaf 'y', leaf 'z']
e1 = Node 'H' [leaf 'I', leaf 'J', leaf 'K', leaf 'L']
e2 = Node 'N' [leaf 'O']
leaf :: a -> Tree a
leaf a = Node a []
-- This is the tree (a) T3 from Buchheim, Junger and Leipert
-- /Improving Walker\'s Algorithm to Run in Linear Time/.
--
tree4 :: Tree Int
tree4 = Node 1 [a1, a2]
where
a1 = Node 2 [b1]
a2 = Node 3 [b2, b3]
b1 = Node 4 [c1]
b2 = Node 5 [c2]
b3 = Node 6 [leaf 9, c3]
c1 = Node 7 [d1]
c2 = Node 8 [leaf 12]
c3 = Node 10 [d2]
d1 = Node 11 [leaf 14]
d2 = Node 13 [leaf 15]
-- This is the tree (b) T3 from Buchheim, Junger and Leipert
-- /Improving Walker\'s Algorithm to Run in Linear Time/.
--
-- The generated picture is different - Wumpus-Tree only evenly
-- spaces the leaves, it looks like the trees in that paper are
-- evenly spaced at the interior nodes too.
--
tree5 :: Tree Int
tree5 = Node 1 [a1, leaf 3, leaf 4, leaf 5, a2, leaf 7, leaf 8, leaf 9, a3]
where
a1 = Node 2 [leaf 11, leaf 12, leaf 13, leaf 14, leaf 15, leaf 16
, leaf 17, leaf 18, leaf 19, leaf 20, b1]
a2 = Node 6 [leaf 22]
a3 = Node 10 [b2]
b1 = Node 21 [leaf 24, leaf 25, leaf 26, leaf 27, leaf 28, leaf 29
,leaf 30, leaf 31, leaf 32, leaf 33, leaf 34]
b2 = Node 23 [leaf 35]