cga/Graphics/Diagram/Gtk.hs

{-# OPTIONS_HADDOCK ignore-exports #-}

module Graphics.Diagram.Gtk where

import Diagrams.Backend.Cairo
import Diagrams.Prelude
import Graphics.Diagram.Plotter
import Graphics.Diagram.Types
import Parser.Meshparser


-- |Create the Diagram from the points.
diag :: DiagProp -> Object -> Diagram Cairo R2
diag p obj@(Object _)
  | alg p == 0 =
      mkDiag (mconcat [coordPointsText, coordPoints, plotterBG])
             p obj
  | alg p == 1 =
      mkDiag (mconcat [convexHPText, convexHP, convexHLs, coordPoints, plotterBG])
             p obj
  | alg p == 4 =
      mkDiag (mconcat [squares, coordPointsText, coordPoints, polyLines,
                       plotterBG])
             p obj
  | otherwise = mempty
diag p objs@(Objects _)
  | alg p == 2 =
      mkDiag (mconcat [polyLines, coordPointsText, coordPoints, plotterBG])
             p objs
  | alg p == 3 =
      mkDiag (mconcat [polyIntersectionText, polyIntersection,
                      coordPoints, polyLines, plotterBG])
             p objs
  | otherwise = mempty


-- |Create the Diagram from a String which is supposed to be the contents
-- of an obj file.
diagS :: DiagProp -> MeshString -> Diagram Cairo R2
diagS p mesh
  | alg p == 2 || alg p == 3 = diag p. Objects . facesToArr $ mesh
  | otherwise = (diag p . Object . meshToArr $ mesh) # bg white