From 33ac9c597f708c0f0d2232c25e1fbbf7840b9610 Mon Sep 17 00:00:00 2001
From: Joe Crayne <joe@jerkface.net>
Date: Tue, 11 Jun 2019 02:58:54 -0400
Subject: Sundqvist parser: support vp token.

---
 src/Graphics/WaveFront/Parse/OBJ.hs | 6 +++++-
 src/Graphics/WaveFront/Types.hs     | 1 +
 test/TestSundqvist.hs               | 4 +---
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/Graphics/WaveFront/Parse/OBJ.hs b/src/Graphics/WaveFront/Parse/OBJ.hs
index 2c3919e..df4b52e 100644
--- a/src/Graphics/WaveFront/Parse/OBJ.hs
+++ b/src/Graphics/WaveFront/Parse/OBJ.hs
@@ -83,6 +83,7 @@ token = (Atto.string "f"  *> face)     <|>
         -- TODO: How to deal with common prefix (v, vn, vt) (backtrack?) (doesn't seem to be a problem)
         (Atto.string "vn" *> normal)   <|>
         (Atto.string "vt" *> texcoord) <|>
+        (Atto.string "vp" *> paramcoord) <|>
         (Atto.string "v"  *> vertex)   <|>
         (Atto.string "o"  *> object)   <|>
         (Atto.string "g"  *> group)    <|>
@@ -137,10 +138,13 @@ normal :: (Fractional f) => Atto.Parser (OBJToken f Text i m)
 normal = OBJNormal <$> point3D
 
 
--- | Two coordinates, separated by whitespace
+-- | One to three coordinates, separated by whitespace
 texcoord :: (Fractional f) => Atto.Parser (OBJToken f Text i m)
 texcoord = OBJTexCoord <$> pointTo3 1 0.0
 
+-- | One to three coordinates, separated by whitespace
+paramcoord :: (Fractional f) => Atto.Parser (OBJToken f Text i m)
+paramcoord = OBJParamCoord <$> pointTo3 1 0.0
 
 -- | Three coordinates, separated by whitespace
 vertex :: (Fractional f) =>  Atto.Parser (OBJToken f s i m)
diff --git a/src/Graphics/WaveFront/Types.hs b/src/Graphics/WaveFront/Types.hs
index 5b093de..f8cd6fe 100644
--- a/src/Graphics/WaveFront/Types.hs
+++ b/src/Graphics/WaveFront/Types.hs
@@ -68,6 +68,7 @@ import Linear (V2(..), V3(..), V4(..))
 data OBJToken f s i m = OBJVertex   (V4 f) |
                         OBJNormal   (V3 f) |
                         OBJTexCoord (V3 f) |
+                        OBJParamCoord (V3 f) |
                         OBJFace (m (VertexIndices i)) | -- TODO: Associate material with each face, handle absent indices
 
                         Line i i | -- Line (I'm assuming the arguments are indices to the endpoint vertices)
diff --git a/test/TestSundqvist.hs b/test/TestSundqvist.hs
index 935368a..25d3f8f 100644
--- a/test/TestSundqvist.hs
+++ b/test/TestSundqvist.hs
@@ -16,6 +16,4 @@ getDataDir = do
 main = do
     ddir <- getDataDir
     r1 <- Load.obj (ddir ++ "/01.obj")
-    print r1
-    -- Failed: endOfInput
-    -- Reason: vp token,and blank lines
+    either print (mapM_ print) r1
-- 
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