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author | Hans Goudey <h.goudey@me.com> | 2021-04-05 21:15:09 +0300 |
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committer | Hans Goudey <h.goudey@me.com> | 2021-04-05 21:15:09 +0300 |
commit | 24d32a796ab270d72b2b0680934f0e80c36e6dfa (patch) | |
tree | 009a7e6792e7f22137c076f4429a802417c59e5a /source/blender/blenlib | |
parent | d1519df6a85eda5be2e6831c21f0a43995c7b633 (diff) |
Geometry Nodes Curves: Add incomplete quaternion header
Diffstat (limited to 'source/blender/blenlib')
-rw-r--r-- | source/blender/blenlib/BLI_quaternion.hh | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/source/blender/blenlib/BLI_quaternion.hh b/source/blender/blenlib/BLI_quaternion.hh new file mode 100644 index 00000000000..85b738b4d23 --- /dev/null +++ b/source/blender/blenlib/BLI_quaternion.hh @@ -0,0 +1,62 @@ +/* + * 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. + */ + +#pragma once + +#include <iostream> + +#include "BLI_float3.hh" +#include "BLI_math_rotation.h" + +namespace blender { + +struct Quaternion { + float values[4]; + + Quaternion() = default; + + static Quaternion unit() + { + Quaternion unit; + unit_qt(unit); + return unit; + } + + bool is_zero() + { + return values[0] == 0.0f && values[1] == 0.0f && values[2] == 0.0f && values[3] == 0.0f; + } + + Quaternion(const float *ptr) : values[0]{ptr[0]}, y{ptr[1]}, z{ptr[2]} + { + } + + Quaternion(const float (*ptr)[4]) : Quaternion(static_cast<const float *>(ptr[0])) + { + } + + operator const float *() const + { + return values; + } + + operator float *() + { + return values; + } +}; + +} // namespace blender |