ImplicitCAD/Examples/example17.hs

-- Example 17, pulled from our benchmarking suite.
import Prelude ((<$>), ($), zip3, fmap, fromIntegral, (*), (/))
import Graphics.Implicit (union, translate, rect3R, writeSTL)
import Graphics.Implicit.Definitions (Fastℕ, ℝ, ℝ3, SymbolicObj3)

default (Fastℕ, ℝ)

object2 :: SymbolicObj3
object2 = squarePipe (10, 10, 10) 1 100
    where
      squarePipe :: ℝ3 -> ℝ -> ℝ -> SymbolicObj3
      squarePipe (x,y,z) diameter precision =
            union
            ((\start -> translate start
               $ cubeR 0 False (diameter, diameter, diameter)
             )
             <$>
              zip3 (fmap (\n -> (fromIntegral n / precision) * x) [0..100])
                   (fmap (\n -> (fromIntegral n / precision) * y) [0..100])
                   (fmap (\n -> (fromIntegral n / precision) * z) [0..100]))

main = writeSTL 1 "example17.stl" object2