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Diffstat (limited to 'intern/opensubdiv/internal/opensubdiv_converter_orient.h')
-rw-r--r-- | intern/opensubdiv/internal/opensubdiv_converter_orient.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/intern/opensubdiv/internal/opensubdiv_converter_orient.h b/intern/opensubdiv/internal/opensubdiv_converter_orient.h new file mode 100644 index 00000000000..b783007a0cb --- /dev/null +++ b/intern/opensubdiv/internal/opensubdiv_converter_orient.h @@ -0,0 +1,50 @@ +// 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 + +#ifndef OPENSUBDIV_CONVERTER_ORIENT_H_ +#define OPENSUBDIV_CONVERTER_ORIENT_H_ + +#include <opensubdiv/far/types.h> + +// Set of utility functions which are needed to bring topology to an orientation +// (or, winding, if you wish) which OpenSubdiv expects. + +namespace opensubdiv_capi { + +inline void reverseFaceVertices(int* face_vertices, const int num_vertices); + +// TODO(sergey): Document which value corresponds to which winding. +inline int getLoopWinding(int vert0_of_face, int vert1_of_face); + +inline void reverseFaceLoops( + OpenSubdiv::Far::IndexArray* face_vertices, + OpenSubdiv::Far::IndexArray* face_edges); + +// Used for debugging, checks whether orientation happened correct. +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); + +} // namespace opensubdiv_capi + +#endif // OPENSUBDIV_CONVERTER_ORIENT_H_ + +#include "internal/opensubdiv_converter_orient_impl.h" |