1 files changed, 66 insertions, 0 deletions
diff --git a/intern/opensubdiv/internal/opensubdiv_converter_orient.cc b/intern/opensubdiv/internal/opensubdiv_converter_orient.cc
new file mode 100644
index 00000000000..449e9028180
--- /dev/null
+++ b/intern/opensubdiv/internal/opensubdiv_converter_orient.cc
@@ -0,0 +1,66 @@
+// Copyright 2018 Blender Foundation. All rights reserved.
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software Foundation,
+// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+//
+// Author: Sergey Sharybin
+
+#include "internal/opensubdiv_converter_orient.h"
+
+#include "internal/opensubdiv_internal.h"
+
+namespace opensubdiv_capi {
+
+void checkOrientedVertexConnectivity(const int num_vertex_edges,
+                                     const int num_vertex_faces,
+                                     const int* vertex_edges,
+                                     const int* vertex_faces,
+                                     const int* dst_vertex_edges,
+                                     const int* dst_vertex_faces) {
+#ifndef NDEBUG
+  for (int i = 0; i < num_vertex_faces; ++i) {
+    bool found = false;
+    for (int j = 0; j < num_vertex_faces; ++j) {
+      if (vertex_faces[i] == dst_vertex_faces[j]) {
+        found = true;
+        break;
+      }
+    }
+    if (!found) {
+      assert(!"vert-faces connectivity ruined");
+    }
+  }
+  for (int i = 0; i < num_vertex_edges; ++i) {
+    bool found = false;
+    for (int j = 0; j < num_vertex_edges; ++j) {
+      if (vertex_edges[i] == dst_vertex_edges[j]) {
+        found = true;
+        break;
+      }
+    }
+    if (!found) {
+      assert(!"vert-edges connectivity ruined");
+    }
+  }
+#else
+  (void) num_vertex_edges;
+  (void) num_vertex_faces;
+  (void) vertex_edges;
+  (void) vertex_faces;
+  (void) dst_vertex_edges;
+  (void) dst_vertex_faces;
+#endif
+}
+
+}  // namespace opensubdiv_capi