X-Git-Url: http://gitweb.michael.orlitzky.com/?a=blobdiff_plain;f=src%2FValues.hs;h=dc45a3f16dd7560e5b5b2d863e212ef6654c30b8;hb=6c6ca17ba52b570cc50c1a9546ee9b6a5d3266fd;hp=bd7c4d66af25ba443a6afe7f72d7bc6885df7f3b;hpb=883ce9d78072c492000de94478189095032b6615;p=spline3.git

diff --git a/src/Values.hs b/src/Values.hs
index bd7c4d6..dc45a3f 100644
--- a/src/Values.hs
+++ b/src/Values.hs
@@ -1,4 +1,4 @@
-{-# LANGUAGE TypeSynonymInstances #-}
+{-# LANGUAGE FlexibleInstances #-}
 
 module Values
 where
@@ -14,13 +14,18 @@ import Data.Array.Repa (
   fromList,
   index,
   reshape,
+  size
   )
 
-import Data.Array.Repa.IO.Vector (readVectorFromTextFile)
+import Data.Array.Repa.IO.Vector (readVectorFromTextFile,
+                                  writeVectorToTextFile)
 import System.FilePath ()
 import Test.QuickCheck (Arbitrary(..), Gen)
 
 
+import ScaleFactor
+
+
 type Values1D = Array DIM1 Double
 type Values2D = Array DIM2 Double
 type Values3D = Array DIM3 Double
@@ -54,6 +59,12 @@ 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) []
@@ -72,3 +83,13 @@ idx v3d i j k =
     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')