From e0a3b4650f92a39fed428c26c1e137767fffa15c Mon Sep 17 00:00:00 2001
From: Joe Crayne <joe@jerkface.net>
Date: Tue, 11 Jun 2019 17:29:21 -0400
Subject: Sabadie: Started free-form geometry support.

---
 src/Codec/Wavefront/FreeForm.hs | 10 ++++++++++
 src/Codec/Wavefront/Lexer.hs    | 10 ++++++++++
 src/Codec/Wavefront/Object.hs   | 10 ++++++++++
 wavefront-obj.cabal             |  1 +
 4 files changed, 31 insertions(+)
 create mode 100644 src/Codec/Wavefront/FreeForm.hs

diff --git a/src/Codec/Wavefront/FreeForm.hs b/src/Codec/Wavefront/FreeForm.hs
new file mode 100644
index 0000000..4e418a7
--- /dev/null
+++ b/src/Codec/Wavefront/FreeForm.hs
@@ -0,0 +1,10 @@
+module Codec.Wavefront.FreeForm where
+
+data Curve = Curve
+ deriving (Eq,Show)
+
+data EmbeddedCurve = EmbeddedCurve
+ deriving (Eq,Show)
+
+data Surface = Surface
+ deriving (Eq,Show)
diff --git a/src/Codec/Wavefront/Lexer.hs b/src/Codec/Wavefront/Lexer.hs
index 77ecb35..ea32e2a 100644
--- a/src/Codec/Wavefront/Lexer.hs
+++ b/src/Codec/Wavefront/Lexer.hs
@@ -14,6 +14,7 @@ module Codec.Wavefront.Lexer where
 
 import Codec.Wavefront.Element
 import Codec.Wavefront.Face
+import Codec.Wavefront.FreeForm
 import Codec.Wavefront.Line
 import Codec.Wavefront.Location
 import Codec.Wavefront.Normal
@@ -42,6 +43,12 @@ data Ctxt = Ctxt {
   , ctxtLines :: DList (Element Line)
     -- |Faces.
   , ctxtFaces :: DList (Element Face)
+    -- |Curves.
+  , ctxtCurves :: DList (Element Curve)
+    -- |Curves on surfaces.
+  , ctxtEmbeddedCurves :: DList (Element EmbeddedCurve)
+    -- |Surfaces.
+  , ctxtSurfaces :: DList (Element Surface)
     -- |Current object.
   , ctxtCurrentObject :: Maybe Text
     -- |Current groups.
@@ -65,6 +72,9 @@ emptyCtxt = Ctxt {
   , ctxtPoints = empty
   , ctxtLines = empty
   , ctxtFaces = empty
+  , ctxtCurves = empty
+  , ctxtEmbeddedCurves = empty
+  , ctxtSurfaces = empty
   , ctxtCurrentObject = Nothing
   , ctxtCurrentGroups = ["default"]
   , ctxtCurrentMtl = Nothing
diff --git a/src/Codec/Wavefront/Object.hs b/src/Codec/Wavefront/Object.hs
index 26d85c2..65c062e 100644
--- a/src/Codec/Wavefront/Object.hs
+++ b/src/Codec/Wavefront/Object.hs
@@ -13,6 +13,7 @@ module Codec.Wavefront.Object where
 
 import Codec.Wavefront.Element
 import Codec.Wavefront.Face
+import Codec.Wavefront.FreeForm
 import Codec.Wavefront.Lexer ( Ctxt(..) )
 import Codec.Wavefront.Line
 import Codec.Wavefront.Location
@@ -38,6 +39,12 @@ data WavefrontOBJ = WavefrontOBJ {
   , objLines :: Vector (Element Line)
     -- |Faces.
   , objFaces :: Vector (Element Face)
+    -- |Curves.
+  , objCurves :: Vector (Element Curve)
+    -- |Curves on surfaces.
+  , objEmbeddedCurves :: Vector (Element EmbeddedCurve)
+    -- |Surfaces.
+  , objSurfaces :: Vector (Element Surface)
     -- |Material libraries.
   , objMtlLibs :: Vector Text
   } deriving (Eq,Show)
@@ -51,6 +58,9 @@ ctxtToWavefrontOBJ ctxt = WavefrontOBJ {
   , objPoints = fromDList (ctxtPoints ctxt)
   , objLines = fromDList (ctxtLines ctxt)
   , objFaces = fromDList (ctxtFaces ctxt)
+  , objCurves = fromDList (ctxtCurves ctxt)
+  , objEmbeddedCurves = fromDList (ctxtEmbeddedCurves ctxt)
+  , objSurfaces = fromDList (ctxtSurfaces ctxt)
   , objMtlLibs = fromDList (ctxtMtlLibs ctxt)
   }
 
diff --git a/wavefront-obj.cabal b/wavefront-obj.cabal
index 2a0532c..717ab5f 100644
--- a/wavefront-obj.cabal
+++ b/wavefront-obj.cabal
@@ -46,6 +46,7 @@ library
                     , Codec.Wavefront.Normal
                     , Codec.Wavefront.Point
                     , Codec.Wavefront.Face
+                    , Codec.Wavefront.FreeForm
                     , Codec.Wavefront.Token
   -- other-modules:
   other-extensions:   ForeignFunctionInterface
-- 
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