From 999576c62823479bd840e11e4802913d88c22cc5 Mon Sep 17 00:00:00 2001
From: Michael Orlitzky <michael@orlitzky.com>
Date: Wed, 15 Apr 2015 21:35:08 -0400
Subject: [PATCH] Import cleanup in Grid.

---
 src/Grid.hs | 72 +++++++++++++++++++++++++++++------------------------
 1 file changed, 39 insertions(+), 33 deletions(-)

diff --git a/src/Grid.hs b/src/Grid.hs
index 269b37c..b40f655 100644
--- a/src/Grid.hs
+++ b/src/Grid.hs
@@ -5,38 +5,43 @@ module Grid (
   cube_at,
   grid_tests,
   slow_tests,
-  zoom
-  )
+  zoom )
 where
 
-import qualified Data.Array.Repa as R
-import qualified Data.Array.Repa.Operators.Traversal as R (unsafeTraverse)
-import Test.HUnit (Assertion, assertEqual)
-import Test.Framework (Test, testGroup)
-import Test.Framework.Providers.HUnit (testCase)
-import Test.Framework.Providers.QuickCheck2 (testProperty)
-import Test.QuickCheck ((==>),
-                        Arbitrary(..),
-                        Gen,
-                        Property,
-                        choose,
-                        vectorOf)
-import Assertions (assertAlmostEqual, assertTrue)
-import Comparisons ((~=))
-import Cube (Cube(Cube),
-             find_containing_tetrahedron,
-             tetrahedra,
-             tetrahedron)
-import Examples (trilinear, trilinear9x9x9, zeros)
-import FunctionValues (make_values, value_at)
-import Point (Point(..))
-import ScaleFactor (ScaleFactor)
+import Data.Array.Repa (
+  (:.)( (:.) ),
+  DIM3,
+  Z( Z ),
+  computeUnboxedP,
+  fromListUnboxed )
+import Data.Array.Repa.Operators.Traversal ( unsafeTraverse )
+import Test.HUnit ( Assertion, assertEqual )
+import Test.Framework ( Test, testGroup )
+import Test.Framework.Providers.HUnit ( testCase )
+import Test.Framework.Providers.QuickCheck2 ( testProperty )
+import Test.QuickCheck (
+  (==>),
+  Arbitrary(..),
+  Gen,
+  Property,
+  choose,
+  vectorOf )
+import Assertions ( assertAlmostEqual, assertTrue )
+import Comparisons ( (~=) )
+import Cube (
+  Cube( Cube ),
+  find_containing_tetrahedron,
+  tetrahedra,
+  tetrahedron )
+import Examples ( trilinear, trilinear9x9x9, zeros )
+import FunctionValues ( make_values, value_at )
+import Point ( Point(..) )
+import ScaleFactor ( ScaleFactor )
 import Tetrahedron (
   Tetrahedron(v0,v1,v2,v3),
   c,
-  polynomial,
-  )
-import Values (Values3D, dims, empty3d, zoom_shape)
+  polynomial )
+import Values ( Values3D, dims, empty3d, zoom_shape )
 
 
 -- | Our problem is defined on a Grid. The grid size is given by the
@@ -44,6 +49,7 @@ import Values (Values3D, dims, empty3d, zoom_shape)
 --   performance reasons (and simplicity). The function values are the
 --   values of the function at the grid points, which are distance h=1
 --   from one another in each direction (x,y,z).
+--
 data Grid = Grid { function_values :: Values3D }
           deriving (Show)
 
@@ -54,8 +60,8 @@ instance Arbitrary Grid where
       y_dim <- choose (1, 27)
       z_dim <- choose (1, 27)
       elements <- vectorOf (x_dim * y_dim * z_dim) (arbitrary :: Gen Double)
-      let new_shape = (R.Z R.:. x_dim R.:. y_dim R.:. z_dim)
-      let fvs = R.fromListUnboxed new_shape elements
+      let new_shape = (Z :. x_dim :. y_dim :. z_dim)
+      let fvs = fromListUnboxed new_shape elements
       return $ Grid fvs
 
 
@@ -104,13 +110,13 @@ find_containing_cube g (Point x y z) =
       k = calculate_containing_cube_coordinate g z
 
 
-zoom_lookup :: Values3D -> ScaleFactor -> a -> (R.DIM3 -> Double)
+zoom_lookup :: Values3D -> ScaleFactor -> a -> (DIM3 -> Double)
 zoom_lookup v3d scale_factor _ =
     zoom_result v3d scale_factor
 
 
-zoom_result :: Values3D -> ScaleFactor -> R.DIM3 -> Double
-zoom_result v3d (sfx, sfy, sfz) (R.Z R.:. m R.:. n R.:. o) =
+zoom_result :: Values3D -> ScaleFactor -> DIM3 -> Double
+zoom_result v3d (sfx, sfy, sfz) (Z :. m :. n :. o) =
   f p
   where
     g = Grid v3d
@@ -132,7 +138,7 @@ zoom :: Values3D -> ScaleFactor -> IO Values3D
 zoom v3d scale_factor
     | xsize == 0 || ysize == 0 || zsize == 0 = return empty3d
     | otherwise =
-        R.computeUnboxedP $ R.unsafeTraverse v3d transExtent f
+        computeUnboxedP $ unsafeTraverse v3d transExtent f
         where
           (xsize, ysize, zsize) = dims v3d
           transExtent = zoom_shape scale_factor
-- 
2.44.2