diff options
author | Sergey Sharybin <sergey.vfx@gmail.com> | 2018-11-01 17:12:54 +0300 |
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committer | Sergey Sharybin <sergey.vfx@gmail.com> | 2018-11-01 17:20:50 +0300 |
commit | d710cb91b9281e94851bddc8b49b570dc6326b5f (patch) | |
tree | 1dcca4ff99b327ce0eaf21715b5986082ac5e540 /source/blender/blenkernel/intern/multires_inline.h | |
parent | c2aa8d03f26ceb2700730e5aeb2c72ccfa969116 (diff) |
Subdiv: Cleanup, de-duplicate tangent matrix calculation
Diffstat (limited to 'source/blender/blenkernel/intern/multires_inline.h')
-rw-r--r-- | source/blender/blenkernel/intern/multires_inline.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/multires_inline.h b/source/blender/blenkernel/intern/multires_inline.h new file mode 100644 index 00000000000..fe01fb6e221 --- /dev/null +++ b/source/blender/blenkernel/intern/multires_inline.h @@ -0,0 +1,68 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * 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) 2018 by Blender Foundation. + * All rights reserved. + * + * Contributor(s): Sergey Sharybin. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file blender/blenkernel/intern/multires_inline.h + * \ingroup bke + */ + +#ifndef __BKE_MULTIRES_INLINE_H__ +#define __BKE_MULTIRES_INLINE_H__ + +#include "BKE_multires.h" +#include "BLI_math_vector.h" + +BLI_INLINE void BKE_multires_construct_tangent_matrix( + float tangent_matrix[3][3], + const float dPdu[3], + const float dPdv[3], + const int corner) +{ + if (corner == 0) { + copy_v3_v3(tangent_matrix[0], dPdv); + copy_v3_v3(tangent_matrix[1], dPdu); + mul_v3_fl(tangent_matrix[0], -1.0f); + mul_v3_fl(tangent_matrix[1], -1.0f); + } + else if (corner == 1) { + copy_v3_v3(tangent_matrix[0], dPdu); + copy_v3_v3(tangent_matrix[1], dPdv); + mul_v3_fl(tangent_matrix[1], -1.0f); + } + else if (corner == 2) { + copy_v3_v3(tangent_matrix[0], dPdv); + copy_v3_v3(tangent_matrix[1], dPdu); + } + else if (corner == 3) { + copy_v3_v3(tangent_matrix[0], dPdu); + copy_v3_v3(tangent_matrix[1], dPdv); + mul_v3_fl(tangent_matrix[0], -1.0f); + } + cross_v3_v3v3(tangent_matrix[2], dPdu, dPdv); + normalize_v3(tangent_matrix[0]); + normalize_v3(tangent_matrix[1]); + normalize_v3(tangent_matrix[2]); +} + +#endif /* __BKE_MULTIRES_INLINE_H__ */ |