1 files changed, 66 insertions, 0 deletions
diff --git a/source/blender/io/usd/intern/usd_writer_mesh.h b/source/blender/io/usd/intern/usd_writer_mesh.h
new file mode 100644
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--- /dev/null
+++ b/source/blender/io/usd/intern/usd_writer_mesh.h
@@ -0,0 +1,66 @@
+/*
+ * 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.
+ *
+ * The Original Code is Copyright (C) 2019 Blender Foundation.
+ * All rights reserved.
+ */
+#ifndef __USD_WRITER_MESH_H__
+#define __USD_WRITER_MESH_H__
+
+#include "usd_writer_abstract.h"
+
+#include <pxr/usd/usdGeom/mesh.h>
+
+namespace USD {
+
+struct USDMeshData;
+
+/* Writer for USD geometry. Does not assume the object is a mesh object. */
+class USDGenericMeshWriter : public USDAbstractWriter {
+ public:
+  USDGenericMeshWriter(const USDExporterContext &ctx);
+
+ protected:
+  virtual bool is_supported(const HierarchyContext *context) const override;
+  virtual void do_write(HierarchyContext &context) override;
+
+  virtual Mesh *get_export_mesh(Object *object_eval, bool &r_needsfree) = 0;
+  virtual void free_export_mesh(Mesh *mesh);
+
+ private:
+  /* Mapping from material slot number to array of face indices with that material. */
+  typedef std::map<short, pxr::VtIntArray> MaterialFaceGroups;
+
+  void write_mesh(HierarchyContext &context, Mesh *mesh);
+  void get_geometry_data(const Mesh *mesh, struct USDMeshData &usd_mesh_data);
+  void assign_materials(const HierarchyContext &context,
+                        pxr::UsdGeomMesh usd_mesh,
+                        const MaterialFaceGroups &usd_face_groups);
+  void write_uv_maps(const Mesh *mesh, pxr::UsdGeomMesh usd_mesh);
+  void write_normals(const Mesh *mesh, pxr::UsdGeomMesh usd_mesh);
+  void write_surface_velocity(Object *object, const Mesh *mesh, pxr::UsdGeomMesh usd_mesh);
+};
+
+class USDMeshWriter : public USDGenericMeshWriter {
+ public:
+  USDMeshWriter(const USDExporterContext &ctx);
+
+ protected:
+  virtual Mesh *get_export_mesh(Object *object_eval, bool &r_needsfree) override;
+};
+
+}  // namespace USD
+
+#endif /* __USD_WRITER_MESH_H__ */