dust3d/third_party/libigl/include/igl/quat_conjugate.h

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