29 lines
781 B
Haskell
29 lines
781 B
Haskell
{-# OPTIONS_HADDOCK ignore-exports #-}
|
|
|
|
module Parser.Meshparser (meshToArr) where
|
|
|
|
import Algebra.VectorTypes
|
|
import Control.Applicative
|
|
import Diagrams.TwoD.Types
|
|
import Parser.Core
|
|
|
|
|
|
-- | Convert a text String with multiple vertices into
|
|
-- an array of float tuples.
|
|
meshToArr :: String -- ^ the string to convert
|
|
-> [PT] -- ^ the resulting vertice table
|
|
meshToArr =
|
|
fmap p2 .
|
|
fmap (\(Just (x, _)) -> x) .
|
|
filter (/= Nothing) .
|
|
fmap (runParser parseVertice) .
|
|
lines
|
|
|
|
|
|
-- | Creates a Parser that accepts a single vertice, such as 'v 1.0 2.0'.
|
|
parseVertice :: Parser (Double, Double)
|
|
parseVertice =
|
|
(,) <$>
|
|
(char 'v' *> spaces *> posDouble) <*>
|
|
(spaces *> posDouble)
|