quat_conjugate.h 992 B

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  1. // This file is part of libigl, a simple c++ geometry processing library.
  2. //
  3. // Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
  4. //
  5. // This Source Code Form is subject to the terms of the Mozilla Public License
  6. // v. 2.0. If a copy of the MPL was not distributed with this file, You can
  7. // obtain one at http://mozilla.org/MPL/2.0/.
  8. #ifndef IGL_QUAT_CONJUGATE_H
  9. #define IGL_QUAT_CONJUGATE_H
  10. #include "igl_inline.h"
  11. namespace igl
  12. {
  13. // Compute conjugate of given quaternion
  14. // http://en.wikipedia.org/wiki/Quaternion#Conjugation.2C_the_norm.2C_and_reciprocal
  15. // A Quaternion, q, is defined here as an arrays of four scalars (x,y,z,w),
  16. // such that q = x*i + y*j + z*k + w
  17. // Inputs:
  18. // q1 input quaternion
  19. // Outputs:
  20. // out result of conjugation, allowed to be same as input
  21. template <typename Q_type>
  22. IGL_INLINE void quat_conjugate(
  23. const Q_type *q1,
  24. Q_type *out);
  25. };
  26. #ifndef IGL_STATIC_LIBRARY
  27. # include "quat_conjugate.cpp"
  28. #endif
  29. #endif