X-Git-Url: http://gitweb.michael.orlitzky.com/?a=blobdiff_plain;f=src%2FValues.hs;h=e21bacf1e906c553e3bda167e9fea3947d4ba8ff;hb=9d123d52885618214e14e9fdefb2f3f43c329ddd;hp=a33bbba56d3eef9da970d845de285af4c39ac39d;hpb=2a90a63d5fbc8fb57a97e97054e139f5284bf7b0;p=spline3.git

diff --git a/src/Values.hs b/src/Values.hs
index a33bbba..e21bacf 100644
--- a/src/Values.hs
+++ b/src/Values.hs
@@ -1,70 +1,35 @@
-{-# LANGUAGE TypeSynonymInstances #-}
-
-module Values
+{-# LANGUAGE FlexibleInstances #-}
+
+module Values (
+  Values,
+  Values2D,
+  Values3D,
+  dims,
+  empty3d,
+  idx,
+  zoom_shape )
 where
 
 import Data.Array.Repa (
-  Array,
-  Z(..),
-  (:.)(..),
-  DIM1,
+  Array, U,
+  Z( Z ),
+  (:.)( (:.) ),
   DIM2,
   DIM3,
   extent,
-  fromList,
-  index,
-  reshape,
-  size
-  )
-
-import Data.Array.Repa.IO.Vector (readVectorFromTextFile,
-                                  writeVectorToTextFile)
-import System.FilePath ()
-import Test.QuickCheck (Arbitrary(..), Gen)
-
-
-type Values1D = Array DIM1 Double
-type Values2D = Array DIM2 Double
-type Values3D = Array DIM3 Double
-
-
-instance Arbitrary Values3D where
-    arbitrary = do
-      x_dim <- arbitrary :: Gen Int
-      y_dim <- arbitrary :: Gen Int
-      z_dim <- arbitrary :: Gen Int
-      one_d <- arbitrary :: Gen Values1D
-      let new_shape = (Z :. x_dim :. y_dim :. z_dim)
-      let three_d = reshape new_shape one_d
-      return three_d
+  fromListUnboxed,
+  unsafeIndex )
 
+import ScaleFactor ( ScaleFactor )
 
-instance Arbitrary Values1D where
-    arbitrary = do
-      x <- arbitrary :: Gen [Double]
-      let shape = (Z :. (length x))
-      let one_d = Data.Array.Repa.fromList shape x
-      return one_d
 
+type Values sh = Array U sh Double
+type Values2D  = Values DIM2
+type Values3D  = Values DIM3
 
-read_values_1d :: FilePath -> IO Values1D
-read_values_1d path = readVectorFromTextFile path
-
-
-read_values_3d :: DIM3 -> FilePath -> IO Values3D
-read_values_3d sh path = do
-  one_d <- read_values_1d path
-  return $ reshape sh one_d
-
-write_values_1d :: Values3D -> FilePath -> IO ()
-write_values_1d v3d path = do
-  let size3d = size $ extent v3d
-  let shape1d = (Z :. size3d)
-  let v1d = reshape shape1d v3d
-  writeVectorToTextFile v1d path
 
 empty3d :: Values3D
-empty3d = Data.Array.Repa.fromList (Z :. 0 :. 0 :. 0) []
+empty3d = Data.Array.Repa.fromListUnboxed (Z :. 0 :. 0 :. 0) []
 
 
 dims :: Values3D -> (Int, Int, Int)
@@ -76,7 +41,17 @@ dims v3d =
 
 idx :: Values3D -> Int -> Int -> Int -> Double
 idx v3d i j k =
-    index v3d shape
+    unsafeIndex v3d shape
     where
       shape :: DIM3
       shape = (Z :. i :. j :. k)
+
+
+zoom_shape :: ScaleFactor -> DIM3 -> DIM3
+zoom_shape (sfx, sfy, sfz) sh =
+    let (Z :. x :. y :. z) = sh
+        x' = x * sfx
+        y' = y * sfy
+        z' = z * sfz
+    in
+      (Z :. x' :. y' :. z')