diff --git a/examples/glViewer/init_shapes.h b/examples/glViewer/init_shapes.h
index 4713ccdc..b7cc6117 100644
--- a/examples/glViewer/init_shapes.h
+++ b/examples/glViewer/init_shapes.h
@@ -76,6 +76,8 @@ static std::vector<ShapeDesc> g_defaultShapes;
 #include <shapes/catmark_pyramid_creases1.h>
 #include <shapes/catmark_pyramid.h>
 #include <shapes/catmark_rook.h>
+#include <shapes/catmark_smoothtris0.h>
+#include <shapes/catmark_smoothtris1.h>
 #include <shapes/catmark_square_hedit0.h>
 #include <shapes/catmark_square_hedit1.h>
 #include <shapes/catmark_square_hedit2.h>
@@ -141,6 +143,8 @@ static void initShapes() {
     g_defaultShapes.push_back( ShapeDesc("catmark_tent",             catmark_tent,             kCatmark ) );
     g_defaultShapes.push_back( ShapeDesc("catmark_torus",            catmark_torus,            kCatmark ) );
     g_defaultShapes.push_back( ShapeDesc("catmark_torus_creases0",   catmark_torus_creases0,   kCatmark ) );
+    g_defaultShapes.push_back( ShapeDesc("catmark_smoothtris0",      catmark_smoothtris0,      kCatmark ) );
+    g_defaultShapes.push_back( ShapeDesc("catmark_smoothtris1",      catmark_smoothtris1,      kCatmark ) );
 //    g_defaultShapes.push_back( ShapeDesc("catmark_square_hedit0",    catmark_square_hedit0,    kCatmark ) );
 //    g_defaultShapes.push_back( ShapeDesc("catmark_square_hedit1",    catmark_square_hedit1,    kCatmark ) );
 //    g_defaultShapes.push_back( ShapeDesc("catmark_square_hedit2",    catmark_square_hedit2,    kCatmark ) );
diff --git a/examples/mayaPolySmooth/mayaPolySmooth.cpp b/examples/mayaPolySmooth/mayaPolySmooth.cpp
index 9a975de1..772b31a8 100644
--- a/examples/mayaPolySmooth/mayaPolySmooth.cpp
+++ b/examples/mayaPolySmooth/mayaPolySmooth.cpp
@@ -638,7 +638,7 @@ MayaPolySmooth::compute( const MPlug& plug, MDataBlock& data ) {
             options.SetCreasingMethod(creaseMethodVal ?
                  OpenSubdiv::Sdc::Options::CREASE_CHAIKIN : OpenSubdiv::Sdc::Options::CREASE_UNIFORM);
             options.SetTriangleSubdivision(smoothTriangles ?
-                 OpenSubdiv::Sdc::Options::TRI_SUB_NEW : OpenSubdiv::Sdc::Options::TRI_SUB_OLD);
+                 OpenSubdiv::Sdc::Options::TRI_SUB_SMOOTH : OpenSubdiv::Sdc::Options::TRI_SUB_CATMARK);
 
             float maxCreaseSharpness=0.0f;
             OpenSubdiv::Far::TopologyRefiner * refiner =
diff --git a/opensubdiv/sdc/catmarkScheme.h b/opensubdiv/sdc/catmarkScheme.h
index 6409bb8d..c5c2d35d 100644
--- a/opensubdiv/sdc/catmarkScheme.h
+++ b/opensubdiv/sdc/catmarkScheme.h
@@ -69,7 +69,7 @@ Scheme<TYPE_CATMARK>::assignSmoothMaskForEdge(EDGE const& edge, MASK& mask) cons
     //
     bool face0IsTri = false;
     bool face1IsTri = false;
-    bool useTriangleOption = (_options.GetTriangleSubdivision() != Options::TRI_SUB_NORMAL);
+    bool useTriangleOption = (_options.GetTriangleSubdivision() == Options::TRI_SUB_SMOOTH);
     if (useTriangleOption) {
         if (faceCount == 2) {
             //
@@ -88,7 +88,7 @@ Scheme<TYPE_CATMARK>::assignSmoothMaskForEdge(EDGE const& edge, MASK& mask) cons
         }
     }
 
-    if (!useTriangleOption) {
+    if (not useTriangleOption) {
         mask.VertexWeight(0) = 0.25f;
         mask.VertexWeight(1) = 0.25f;
 
@@ -103,7 +103,7 @@ Scheme<TYPE_CATMARK>::assignSmoothMaskForEdge(EDGE const& edge, MASK& mask) cons
         }
     } else {
         //
-        //  This mimics the implementation in Hbr in terms of order of operations:
+        //  This mimics the implementation in Hbr in terms of order of operations.
         //
         const Weight CATMARK_SMOOTH_TRI_EDGE_WEIGHT = 0.470f;
 
diff --git a/opensubdiv/sdc/options.h b/opensubdiv/sdc/options.h
index 3e052a85..cd858201 100644
--- a/opensubdiv/sdc/options.h
+++ b/opensubdiv/sdc/options.h
@@ -96,9 +96,8 @@ public:
         CREASE_CHAIKIN
     };
     enum TriangleSubdivision {
-        TRI_SUB_NORMAL = 0,
-        TRI_SUB_OLD,
-        TRI_SUB_NEW
+        TRI_SUB_CATMARK = 0,
+        TRI_SUB_SMOOTH
     };
 
 public:
@@ -107,7 +106,7 @@ public:
     Options() : _vvarBoundInterp(VVAR_BOUNDARY_NONE),
                 _fvarLinInterp(FVAR_LINEAR_ALL),
                 _creasingMethod(CREASE_UNIFORM),
-                _triangleSub(TRI_SUB_NORMAL) { }
+                _triangleSub(TRI_SUB_CATMARK) { }
     ~Options() { }
 
     //
diff --git a/regression/common/vtr_utils.h b/regression/common/vtr_utils.h
index f6f9e31b..7ad6985e 100644
--- a/regression/common/vtr_utils.h
+++ b/regression/common/vtr_utils.h
@@ -54,7 +54,7 @@ GetSdcOptions(Shape const & shape) {
 
     result.SetVVarBoundaryInterpolation(Options::VVAR_BOUNDARY_EDGE_ONLY);
     result.SetCreasingMethod(Options::CREASE_UNIFORM);
-    result.SetTriangleSubdivision(Options::TRI_SUB_NORMAL);
+    result.SetTriangleSubdivision(Options::TRI_SUB_CATMARK);
 
     for (int i=0; i<(int)shape.tags.size(); ++i) {
 
@@ -91,12 +91,6 @@ GetSdcOptions(Shape const & shape) {
                 assert(0);
             } else
                 printf( "expecting single int argument for \"facevaryingpropagatecorners\"\n" );
-        } else if (t->name=="smoothtriangles") {
-
-            if (shape.scheme!=kCatmark) {
-                printf("the \"smoothtriangles\" tag can only be applied to Catmark meshes\n");
-                continue;
-            }
         } else if (t->name=="creasemethod") {
 
             if ((int)t->stringargs.size()==0) {
@@ -104,12 +98,26 @@ GetSdcOptions(Shape const & shape) {
                 continue;
             }
 
-            if( t->stringargs[0]=="normal" )
+            if (t->stringargs[0]=="normal") {
                 result.SetCreasingMethod(Options::CREASE_UNIFORM);
-            else if( t->stringargs[0]=="chaikin" )
+            } else if (t->stringargs[0]=="chaikin") {
                 result.SetCreasingMethod(Options::CREASE_CHAIKIN);
-            else
+            } else {
                 printf("the \"creasemethod\" tag only accepts \"normal\" or \"chaikin\" as value (%s)\n", t->stringargs[0].c_str());
+            }
+        } else if (t->name=="smoothtriangles") {
+
+            if (shape.scheme!=kCatmark) {
+                printf("the \"smoothtriangles\" tag can only be applied to Catmark meshes\n");
+                continue;
+            }
+            if (t->stringargs[0]=="catmark") {
+                result.SetTriangleSubdivision(Options::TRI_SUB_CATMARK);
+            } else if (t->stringargs[0]=="smooth") {
+                result.SetTriangleSubdivision(Options::TRI_SUB_SMOOTH);
+            } else {
+                printf("the \"smoothtriangles\" tag only accepts \"catmark\" or \"smooth\" as value (%s)\n", t->stringargs[0].c_str());
+            }
         }
     }
 
diff --git a/regression/shapes/catmark_smoothtris0.h b/regression/shapes/catmark_smoothtris0.h
new file mode 100644
index 00000000..0fd2bd49
--- /dev/null
+++ b/regression/shapes/catmark_smoothtris0.h
@@ -0,0 +1,235 @@
+//
+//   Copyright 2013 Pixar
+//
+//   Licensed under the Apache License, Version 2.0 (the "Apache License")
+//   with the following modification; you may not use this file except in
+//   compliance with the Apache License and the following modification to it:
+//   Section 6. Trademarks. is deleted and replaced with:
+//
+//   6. Trademarks. This License does not grant permission to use the trade
+//      names, trademarks, service marks, or product names of the Licensor
+//      and its affiliates, except as required to comply with Section 4(c) of
+//      the License and to reproduce the content of the NOTICE file.
+//
+//   You may obtain a copy of the Apache License at
+//
+//       http://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the Apache License with the above modification is
+//   distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+//   KIND, either express or implied. See the Apache License for the specific
+//   language governing permissions and limitations under the Apache License.
+//
+
+static const std::string catmark_smoothtris0 =
+"# This file uses centimeters as units for non-parametric coordinates.\n"
+"\n"
+"v 0.951057 -1.000000 -0.309017\n"
+"v 0.809018 -1.000000 -0.587786\n"
+"v 0.587786 -1.000000 -0.809017\n"
+"v 0.309017 -1.000000 -0.951057\n"
+"v 0.000000 -1.000000 -1.000000\n"
+"v -0.309017 -1.000000 -0.951057\n"
+"v -0.587785 -1.000000 -0.809017\n"
+"v -0.809017 -1.000000 -0.587785\n"
+"v -0.951057 -1.000000 -0.309017\n"
+"v -1.000000 -1.000000 0.000000\n"
+"v -0.951057 -1.000000 0.309017\n"
+"v -0.809017 -1.000000 0.587785\n"
+"v -0.587785 -1.000000 0.809017\n"
+"v -0.309017 -1.000000 0.951057\n"
+"v -0.000000 -1.000000 1.000000\n"
+"v 0.309017 -1.000000 0.951057\n"
+"v 0.587785 -1.000000 0.809017\n"
+"v 0.809017 -1.000000 0.587785\n"
+"v 0.951057 -1.000000 0.309017\n"
+"v 1.000000 -1.000000 0.000000\n"
+"v 0.951057 1.000000 -0.309017\n"
+"v 0.809018 1.000000 -0.587786\n"
+"v 0.587786 1.000000 -0.809017\n"
+"v 0.309017 1.000000 -0.951057\n"
+"v 0.000000 1.000000 -1.000000\n"
+"v -0.309017 1.000000 -0.951057\n"
+"v -0.587785 1.000000 -0.809017\n"
+"v -0.809017 1.000000 -0.587785\n"
+"v -0.951057 1.000000 -0.309017\n"
+"v -1.000000 1.000000 0.000000\n"
+"v -0.951057 1.000000 0.309017\n"
+"v -0.809017 1.000000 0.587785\n"
+"v -0.587785 1.000000 0.809017\n"
+"v -0.309017 1.000000 0.951057\n"
+"v -0.000000 1.000000 1.000000\n"
+"v 0.309017 1.000000 0.951057\n"
+"v 0.587785 1.000000 0.809017\n"
+"v 0.809017 1.000000 0.587785\n"
+"v 0.951057 1.000000 0.309017\n"
+"v 1.000000 1.000000 0.000000\n"
+"v 0.000000 -1.000000 0.000000\n"
+"v 0.000000 1.000000 0.000000\n"
+"vt 0.648603 0.107966\n"
+"vt 0.626409 0.064408\n"
+"vt 0.591842 0.029841\n"
+"vt 0.548284 0.007647\n"
+"vt 0.500000 -0.000000\n"
+"vt 0.451716 0.007647\n"
+"vt 0.408159 0.029841\n"
+"vt 0.373591 0.064409\n"
+"vt 0.351397 0.107966\n"
+"vt 0.343750 0.156250\n"
+"vt 0.351397 0.204534\n"
+"vt 0.373591 0.248091\n"
+"vt 0.408159 0.282659\n"
+"vt 0.451716 0.304853\n"
+"vt 0.500000 0.312500\n"
+"vt 0.548284 0.304853\n"
+"vt 0.591841 0.282659\n"
+"vt 0.626409 0.248091\n"
+"vt 0.648603 0.204534\n"
+"vt 0.656250 0.156250\n"
+"vt 0.375000 0.312500\n"
+"vt 0.387500 0.312500\n"
+"vt 0.400000 0.312500\n"
+"vt 0.412500 0.312500\n"
+"vt 0.425000 0.312500\n"
+"vt 0.437500 0.312500\n"
+"vt 0.450000 0.312500\n"
+"vt 0.462500 0.312500\n"
+"vt 0.475000 0.312500\n"
+"vt 0.487500 0.312500\n"
+"vt 0.500000 0.312500\n"
+"vt 0.512500 0.312500\n"
+"vt 0.525000 0.312500\n"
+"vt 0.537500 0.312500\n"
+"vt 0.550000 0.312500\n"
+"vt 0.562500 0.312500\n"
+"vt 0.575000 0.312500\n"
+"vt 0.587500 0.312500\n"
+"vt 0.600000 0.312500\n"
+"vt 0.612500 0.312500\n"
+"vt 0.625000 0.312500\n"
+"vt 0.375000 0.688440\n"
+"vt 0.387500 0.688440\n"
+"vt 0.400000 0.688440\n"
+"vt 0.412500 0.688440\n"
+"vt 0.425000 0.688440\n"
+"vt 0.437500 0.688440\n"
+"vt 0.450000 0.688440\n"
+"vt 0.462500 0.688440\n"
+"vt 0.475000 0.688440\n"
+"vt 0.487500 0.688440\n"
+"vt 0.500000 0.688440\n"
+"vt 0.512500 0.688440\n"
+"vt 0.525000 0.688440\n"
+"vt 0.537500 0.688440\n"
+"vt 0.550000 0.688440\n"
+"vt 0.562500 0.688440\n"
+"vt 0.575000 0.688440\n"
+"vt 0.587500 0.688440\n"
+"vt 0.600000 0.688440\n"
+"vt 0.612500 0.688440\n"
+"vt 0.625000 0.688440\n"
+"vt 0.648603 0.795466\n"
+"vt 0.626409 0.751908\n"
+"vt 0.591842 0.717341\n"
+"vt 0.548284 0.695147\n"
+"vt 0.500000 0.687500\n"
+"vt 0.451716 0.695147\n"
+"vt 0.408159 0.717341\n"
+"vt 0.373591 0.751909\n"
+"vt 0.351397 0.795466\n"
+"vt 0.343750 0.843750\n"
+"vt 0.351397 0.892034\n"
+"vt 0.373591 0.935591\n"
+"vt 0.408159 0.970159\n"
+"vt 0.451716 0.992353\n"
+"vt 0.500000 1.000000\n"
+"vt 0.548284 0.992353\n"
+"vt 0.591841 0.970159\n"
+"vt 0.626409 0.935591\n"
+"vt 0.648603 0.892034\n"
+"vt 0.656250 0.843750\n"
+"vt 0.500000 0.150000\n"
+"vt 0.500000 0.837500\n"
+"f 1/21 2/22 21/42\n"
+"f 21/42 2/22 22/43\n"
+"f 2/22 3/23 22/43\n"
+"f 22/43 3/23 23/44\n"
+"f 3/23 4/24 23/44\n"
+"f 23/44 4/24 24/45\n"
+"f 4/24 5/25 24/45\n"
+"f 24/45 5/25 25/46\n"
+"f 5/25 6/26 25/46\n"
+"f 25/46 6/26 26/47\n"
+"f 6/26 7/27 26/47\n"
+"f 26/47 7/27 27/48\n"
+"f 7/27 8/28 27/48\n"
+"f 27/48 8/28 28/49\n"
+"f 8/28 9/29 28/49\n"
+"f 28/49 9/29 29/50\n"
+"f 9/29 10/30 29/50\n"
+"f 29/50 10/30 30/51\n"
+"f 10/30 11/31 30/51\n"
+"f 30/51 11/31 31/52\n"
+"f 11/31 12/32 31/52\n"
+"f 31/52 12/32 32/53\n"
+"f 12/32 13/33 32/53\n"
+"f 32/53 13/33 33/54\n"
+"f 13/33 14/34 33/54\n"
+"f 33/54 14/34 34/55\n"
+"f 14/34 15/35 34/55\n"
+"f 34/55 15/35 35/56\n"
+"f 15/35 16/36 35/56\n"
+"f 35/56 16/36 36/57\n"
+"f 16/36 17/37 36/57\n"
+"f 36/57 17/37 37/58\n"
+"f 17/37 18/38 37/58\n"
+"f 37/58 18/38 38/59\n"
+"f 18/38 19/39 38/59\n"
+"f 38/59 19/39 39/60\n"
+"f 19/39 20/40 39/60\n"
+"f 39/60 20/40 40/61\n"
+"f 20/40 1/41 40/61\n"
+"f 40/61 1/41 21/62\n"
+"f 2/2 1/1 41/83\n"
+"f 3/3 2/2 41/83\n"
+"f 4/4 3/3 41/83\n"
+"f 5/5 4/4 41/83\n"
+"f 6/6 5/5 41/83\n"
+"f 7/7 6/6 41/83\n"
+"f 8/8 7/7 41/83\n"
+"f 9/9 8/8 41/83\n"
+"f 10/10 9/9 41/83\n"
+"f 11/11 10/10 41/83\n"
+"f 12/12 11/11 41/83\n"
+"f 13/13 12/12 41/83\n"
+"f 14/14 13/13 41/83\n"
+"f 15/15 14/14 41/83\n"
+"f 16/16 15/15 41/83\n"
+"f 17/17 16/16 41/83\n"
+"f 18/18 17/17 41/83\n"
+"f 19/19 18/18 41/83\n"
+"f 20/20 19/19 41/83\n"
+"f 1/1 20/20 41/83\n"
+"f 21/81 22/80 42/84\n"
+"f 22/80 23/79 42/84\n"
+"f 23/79 24/78 42/84\n"
+"f 24/78 25/77 42/84\n"
+"f 25/77 26/76 42/84\n"
+"f 26/76 27/75 42/84\n"
+"f 27/75 28/74 42/84\n"
+"f 28/74 29/73 42/84\n"
+"f 29/73 30/72 42/84\n"
+"f 30/72 31/71 42/84\n"
+"f 31/71 32/70 42/84\n"
+"f 32/70 33/69 42/84\n"
+"f 33/69 34/68 42/84\n"
+"f 34/68 35/67 42/84\n"
+"f 35/67 36/66 42/84\n"
+"f 36/66 37/65 42/84\n"
+"f 37/65 38/64 42/84\n"
+"f 38/64 39/63 42/84\n"
+"f 39/63 40/82 42/84\n"
+"f 40/82 21/81 42/84\n"
+"t smoothtriangles 0/0/1 catmark\n"
+"\n";
diff --git a/regression/shapes/catmark_smoothtris1.h b/regression/shapes/catmark_smoothtris1.h
new file mode 100644
index 00000000..dcbf64bb
--- /dev/null
+++ b/regression/shapes/catmark_smoothtris1.h
@@ -0,0 +1,235 @@
+//
+//   Copyright 2013 Pixar
+//
+//   Licensed under the Apache License, Version 2.0 (the "Apache License")
+//   with the following modification; you may not use this file except in
+//   compliance with the Apache License and the following modification to it:
+//   Section 6. Trademarks. is deleted and replaced with:
+//
+//   6. Trademarks. This License does not grant permission to use the trade
+//      names, trademarks, service marks, or product names of the Licensor
+//      and its affiliates, except as required to comply with Section 4(c) of
+//      the License and to reproduce the content of the NOTICE file.
+//
+//   You may obtain a copy of the Apache License at
+//
+//       http://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the Apache License with the above modification is
+//   distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+//   KIND, either express or implied. See the Apache License for the specific
+//   language governing permissions and limitations under the Apache License.
+//
+
+static const std::string catmark_smoothtris1 =
+"# This file uses centimeters as units for non-parametric coordinates.\n"
+"\n"
+"v 0.951057 -1.000000 -0.309017\n"
+"v 0.809018 -1.000000 -0.587786\n"
+"v 0.587786 -1.000000 -0.809017\n"
+"v 0.309017 -1.000000 -0.951057\n"
+"v 0.000000 -1.000000 -1.000000\n"
+"v -0.309017 -1.000000 -0.951057\n"
+"v -0.587785 -1.000000 -0.809017\n"
+"v -0.809017 -1.000000 -0.587785\n"
+"v -0.951057 -1.000000 -0.309017\n"
+"v -1.000000 -1.000000 0.000000\n"
+"v -0.951057 -1.000000 0.309017\n"
+"v -0.809017 -1.000000 0.587785\n"
+"v -0.587785 -1.000000 0.809017\n"
+"v -0.309017 -1.000000 0.951057\n"
+"v -0.000000 -1.000000 1.000000\n"
+"v 0.309017 -1.000000 0.951057\n"
+"v 0.587785 -1.000000 0.809017\n"
+"v 0.809017 -1.000000 0.587785\n"
+"v 0.951057 -1.000000 0.309017\n"
+"v 1.000000 -1.000000 0.000000\n"
+"v 0.951057 1.000000 -0.309017\n"
+"v 0.809018 1.000000 -0.587786\n"
+"v 0.587786 1.000000 -0.809017\n"
+"v 0.309017 1.000000 -0.951057\n"
+"v 0.000000 1.000000 -1.000000\n"
+"v -0.309017 1.000000 -0.951057\n"
+"v -0.587785 1.000000 -0.809017\n"
+"v -0.809017 1.000000 -0.587785\n"
+"v -0.951057 1.000000 -0.309017\n"
+"v -1.000000 1.000000 0.000000\n"
+"v -0.951057 1.000000 0.309017\n"
+"v -0.809017 1.000000 0.587785\n"
+"v -0.587785 1.000000 0.809017\n"
+"v -0.309017 1.000000 0.951057\n"
+"v -0.000000 1.000000 1.000000\n"
+"v 0.309017 1.000000 0.951057\n"
+"v 0.587785 1.000000 0.809017\n"
+"v 0.809017 1.000000 0.587785\n"
+"v 0.951057 1.000000 0.309017\n"
+"v 1.000000 1.000000 0.000000\n"
+"v 0.000000 -1.000000 0.000000\n"
+"v 0.000000 1.000000 0.000000\n"
+"vt 0.648603 0.107966\n"
+"vt 0.626409 0.064408\n"
+"vt 0.591842 0.029841\n"
+"vt 0.548284 0.007647\n"
+"vt 0.500000 -0.000000\n"
+"vt 0.451716 0.007647\n"
+"vt 0.408159 0.029841\n"
+"vt 0.373591 0.064409\n"
+"vt 0.351397 0.107966\n"
+"vt 0.343750 0.156250\n"
+"vt 0.351397 0.204534\n"
+"vt 0.373591 0.248091\n"
+"vt 0.408159 0.282659\n"
+"vt 0.451716 0.304853\n"
+"vt 0.500000 0.312500\n"
+"vt 0.548284 0.304853\n"
+"vt 0.591841 0.282659\n"
+"vt 0.626409 0.248091\n"
+"vt 0.648603 0.204534\n"
+"vt 0.656250 0.156250\n"
+"vt 0.375000 0.312500\n"
+"vt 0.387500 0.312500\n"
+"vt 0.400000 0.312500\n"
+"vt 0.412500 0.312500\n"
+"vt 0.425000 0.312500\n"
+"vt 0.437500 0.312500\n"
+"vt 0.450000 0.312500\n"
+"vt 0.462500 0.312500\n"
+"vt 0.475000 0.312500\n"
+"vt 0.487500 0.312500\n"
+"vt 0.500000 0.312500\n"
+"vt 0.512500 0.312500\n"
+"vt 0.525000 0.312500\n"
+"vt 0.537500 0.312500\n"
+"vt 0.550000 0.312500\n"
+"vt 0.562500 0.312500\n"
+"vt 0.575000 0.312500\n"
+"vt 0.587500 0.312500\n"
+"vt 0.600000 0.312500\n"
+"vt 0.612500 0.312500\n"
+"vt 0.625000 0.312500\n"
+"vt 0.375000 0.688440\n"
+"vt 0.387500 0.688440\n"
+"vt 0.400000 0.688440\n"
+"vt 0.412500 0.688440\n"
+"vt 0.425000 0.688440\n"
+"vt 0.437500 0.688440\n"
+"vt 0.450000 0.688440\n"
+"vt 0.462500 0.688440\n"
+"vt 0.475000 0.688440\n"
+"vt 0.487500 0.688440\n"
+"vt 0.500000 0.688440\n"
+"vt 0.512500 0.688440\n"
+"vt 0.525000 0.688440\n"
+"vt 0.537500 0.688440\n"
+"vt 0.550000 0.688440\n"
+"vt 0.562500 0.688440\n"
+"vt 0.575000 0.688440\n"
+"vt 0.587500 0.688440\n"
+"vt 0.600000 0.688440\n"
+"vt 0.612500 0.688440\n"
+"vt 0.625000 0.688440\n"
+"vt 0.648603 0.795466\n"
+"vt 0.626409 0.751908\n"
+"vt 0.591842 0.717341\n"
+"vt 0.548284 0.695147\n"
+"vt 0.500000 0.687500\n"
+"vt 0.451716 0.695147\n"
+"vt 0.408159 0.717341\n"
+"vt 0.373591 0.751909\n"
+"vt 0.351397 0.795466\n"
+"vt 0.343750 0.843750\n"
+"vt 0.351397 0.892034\n"
+"vt 0.373591 0.935591\n"
+"vt 0.408159 0.970159\n"
+"vt 0.451716 0.992353\n"
+"vt 0.500000 1.000000\n"
+"vt 0.548284 0.992353\n"
+"vt 0.591841 0.970159\n"
+"vt 0.626409 0.935591\n"
+"vt 0.648603 0.892034\n"
+"vt 0.656250 0.843750\n"
+"vt 0.500000 0.150000\n"
+"vt 0.500000 0.837500\n"
+"f 1/21 2/22 21/42\n"
+"f 21/42 2/22 22/43\n"
+"f 2/22 3/23 22/43\n"
+"f 22/43 3/23 23/44\n"
+"f 3/23 4/24 23/44\n"
+"f 23/44 4/24 24/45\n"
+"f 4/24 5/25 24/45\n"
+"f 24/45 5/25 25/46\n"
+"f 5/25 6/26 25/46\n"
+"f 25/46 6/26 26/47\n"
+"f 6/26 7/27 26/47\n"
+"f 26/47 7/27 27/48\n"
+"f 7/27 8/28 27/48\n"
+"f 27/48 8/28 28/49\n"
+"f 8/28 9/29 28/49\n"
+"f 28/49 9/29 29/50\n"
+"f 9/29 10/30 29/50\n"
+"f 29/50 10/30 30/51\n"
+"f 10/30 11/31 30/51\n"
+"f 30/51 11/31 31/52\n"
+"f 11/31 12/32 31/52\n"
+"f 31/52 12/32 32/53\n"
+"f 12/32 13/33 32/53\n"
+"f 32/53 13/33 33/54\n"
+"f 13/33 14/34 33/54\n"
+"f 33/54 14/34 34/55\n"
+"f 14/34 15/35 34/55\n"
+"f 34/55 15/35 35/56\n"
+"f 15/35 16/36 35/56\n"
+"f 35/56 16/36 36/57\n"
+"f 16/36 17/37 36/57\n"
+"f 36/57 17/37 37/58\n"
+"f 17/37 18/38 37/58\n"
+"f 37/58 18/38 38/59\n"
+"f 18/38 19/39 38/59\n"
+"f 38/59 19/39 39/60\n"
+"f 19/39 20/40 39/60\n"
+"f 39/60 20/40 40/61\n"
+"f 20/40 1/41 40/61\n"
+"f 40/61 1/41 21/62\n"
+"f 2/2 1/1 41/83\n"
+"f 3/3 2/2 41/83\n"
+"f 4/4 3/3 41/83\n"
+"f 5/5 4/4 41/83\n"
+"f 6/6 5/5 41/83\n"
+"f 7/7 6/6 41/83\n"
+"f 8/8 7/7 41/83\n"
+"f 9/9 8/8 41/83\n"
+"f 10/10 9/9 41/83\n"
+"f 11/11 10/10 41/83\n"
+"f 12/12 11/11 41/83\n"
+"f 13/13 12/12 41/83\n"
+"f 14/14 13/13 41/83\n"
+"f 15/15 14/14 41/83\n"
+"f 16/16 15/15 41/83\n"
+"f 17/17 16/16 41/83\n"
+"f 18/18 17/17 41/83\n"
+"f 19/19 18/18 41/83\n"
+"f 20/20 19/19 41/83\n"
+"f 1/1 20/20 41/83\n"
+"f 21/81 22/80 42/84\n"
+"f 22/80 23/79 42/84\n"
+"f 23/79 24/78 42/84\n"
+"f 24/78 25/77 42/84\n"
+"f 25/77 26/76 42/84\n"
+"f 26/76 27/75 42/84\n"
+"f 27/75 28/74 42/84\n"
+"f 28/74 29/73 42/84\n"
+"f 29/73 30/72 42/84\n"
+"f 30/72 31/71 42/84\n"
+"f 31/71 32/70 42/84\n"
+"f 32/70 33/69 42/84\n"
+"f 33/69 34/68 42/84\n"
+"f 34/68 35/67 42/84\n"
+"f 35/67 36/66 42/84\n"
+"f 36/66 37/65 42/84\n"
+"f 37/65 38/64 42/84\n"
+"f 38/64 39/63 42/84\n"
+"f 39/63 40/82 42/84\n"
+"f 40/82 21/81 42/84\n"
+"t smoothtriangles 0/0/1 smooth\n"
+"\n";