From cf8ffed2dce0ca9bba3faad6e9607badffb0aae0 Mon Sep 17 00:00:00 2001
From: Steven <steven.vasilogianis@gmail.com>
Date: Thu, 25 Apr 2019 18:57:23 -0400
Subject: added at command, placeColored, rough/experimental version of
 spreadEvenly; added writeTempSCAD and openTempSCAD (moved out of shelves.hs)

---
 OpenSCAD/Carpentry.hs | 51 +++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 47 insertions(+), 4 deletions(-)

diff --git a/OpenSCAD/Carpentry.hs b/OpenSCAD/Carpentry.hs
index 8c0eebe..7191781 100644
--- a/OpenSCAD/Carpentry.hs
+++ b/OpenSCAD/Carpentry.hs
@@ -2,30 +2,58 @@
 module OpenSCAD.Carpentry
 (
   place
+, placeColored
 , placeAlong
+, at
+, spreadEvenly
 , v3box
 , v3translate
+, writeTempSCAD
+, openTempSCAD
   ) where
 
-import           Control.Lens
+import           Control.Applicative
+import           Control.Lens        hiding (at)
 import           Graphics.OpenSCAD
 import           Linear.V3
+import           System.IO.Temp
+import           System.Process
 
 v3box :: R3 t => t Double -> Model3d
 v3box v = box (v ^. _x) (v ^. _y) (v ^. _z)
 
 v3translate :: (Vector (c, c, c), R3 t) => t c -> Model (c, c, c) -> Model (c, c, c)
-v3translate v m = translate (v ^. _x, v ^. _y, v ^. _z) $ m
+v3translate v m = translate (v ^. _x, v ^. _y, v ^. _z) m
 --  ^ doesn't work ??
 
 place :: (R3 t1, R3 t2) => t2 Double -> [t1 Double] -> [Model (Double, Double, Double)]
-place board positions = map boardAt positions
+place board coords = map boardAt coords
   where
     boardAt p = translate (p ^. _x, p ^. _y, p ^. _z) $ v3box board
 --    boardAt p = v3translate p $ v3box board
 
+
+-- intended usage: place (V3 2 4 16) $ at [0] [0,4..(20*12)] [0]
+-- (which would, e.g., place 2x4 planks next to each other for 20 feet (e.g., floor boards)
+at :: Applicative f => f a -> f a -> f a -> f (V3 a)
+at = liftA3 V3
+--at x y z = V3 <$> x <*> y <*> z -- same as above
+
+placeColored rgb board coords = map boardAt coords
+  where
+    boardAt p = color rgb $ translate (p ^. _x, p ^. _y, p ^. _z) $ v3box board
+
+
+-- deprecated due to the superiority of using place in conjunction with at
 -- placeAlong (V3 2 4 16) (V3 0 0 0) (_x +~ 4) _x (<= 20)
-placeAlong :: (R3 t1, R3 t2) => t2 Double -> t1 Double -> (t1 Double -> t1 Double) -> ((t3 -> Const t3 t3) -> t1 Double -> Const t3 (t1 Double)) -> (t3 -> Bool) -> [Model (Double, Double, Double)]
+placeAlong ::
+  (R3 t1, R3 t2) =>
+  t2 Double
+  -> t1 Double
+  -> (t1 Double -> t1 Double)
+  -> ((t -> Const t t) -> t1 Double -> Const t (t1 Double))
+  -> (t -> Bool)
+  -> [Model (Double, Double, Double)]
 placeAlong board initial shift targ cond =
   place board positions
   where positions =
@@ -35,3 +63,18 @@ placeAlong board initial shift targ cond =
                    then p : next p
                    else []
           in initial : next initial
+
+-- evenly spread <boardCount> number of boards (of the width <boardWidth>) in <span> space
+-- e.g., if you want to have a 20x20 space and want support beams every 16":
+-- spreadEvenly 2 20 (20*12/16)
+spreadEvenly boardWidth fillSpace boardCount =
+  let dist = (fillSpace - boardWidth) / fromIntegral (boardCount - 1)
+  in take boardCount $ iterate (+dist) 0
+
+writeTempSCAD :: String -> IO FilePath
+writeTempSCAD scadstr = writeSystemTempFile "genscad.scad" scadstr
+
+openTempSCAD :: String -> IO ProcessHandle
+openTempSCAD scadstr = do
+  fp <- writeTempSCAD scadstr
+  runCommand $ "openscad " ++ fp
-- 
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