Subdiv: Add deformation-only subdivision

Is intended to be used to generate an array of coordinates of coarse vertices
placed to the final subdivided position.

1 files changed, 38 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_subdiv_deform.h b/source/blender/blenkernel/BKE_subdiv_deform.h
new file mode 100644
index 00000000000..9a97c23afa7
--- /dev/null
+++ b/source/blender/blenkernel/BKE_subdiv_deform.h
@@ -0,0 +1,38 @@
+/*
+ * 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 by Blender Foundation.
+ * All rights reserved.
+ */
+
+/** \file
+ * \ingroup bke
+ */
+
+#ifndef __BKE_SUBDIV_DEFORM_H__
+#define __BKE_SUBDIV_DEFORM_H__
+
+#include "BLI_sys_types.h"
+
+struct Mesh;
+struct Subdiv;
+
+/* Special version of subdivision surface which calculates final positions for coarse vertices. */
+void BKE_subdiv_deform_coarse_vertices(struct Subdiv *subdiv,
+                                       const struct Mesh *coarse_mesh,
+                                       float (*vertex_cos)[3],
+                                       int num_verts);
+
+#endif /* __BKE_SUBDIV_DEFORM_H__ */