Add Binary instances

src/Picture/Data.hs

@@ -5,6 +5,7 @@
 
 module Picture.Data where
 
+import Data.Binary
 import Flat
 import LinearHelp ()
 import Control.Lens
@@ -21,6 +22,7 @@ data Verx = Verx
     , _vxShadNum :: !ShadNum
     }
     deriving (Eq, Ord, Show, Read, Generic, Flat)
+instance Binary Verx 
 
 data Layer
     = BottomLayer
@@ -30,6 +32,7 @@ data Layer
     | DebugLayer
     | FixedCoordLayer
     deriving (Eq, Ord, Enum, Bounded, Show, Read, Generic, Flat)
+instance Binary Layer
 
 layerNum :: Layer -> Int
 layerNum = fromEnum
@@ -39,6 +42,7 @@ numLayers = length [minBound :: Layer .. maxBound]
 
 newtype ShadNum = ShadNum {_unShadNum :: Int}
     deriving (Eq, Ord, Show, Read, Generic, Flat)
+instance Binary ShadNum
 
 polyNum, polyzNum, bezNum, textNum, arcNum, ellNum :: ShadNum
 {-# INLINE polyNum #-}