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// This file is part of libigl, a simple c++ geometry processing library.
//
// Copyright (C) 2016 Qingan Zhou <qnzhou@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_COPYLEFT_CGAL_ORIENT_3D_H
#define IGL_COPYLEFT_CGAL_ORIENT_3D_H
#include "../../igl_inline.h"
namespace igl
{
namespace copyleft
{
namespace cgal
{
// Inputs:
// pa,pb,pc,pd 3D points.
// Output:
// 1 if pa,pb,pc,pd forms a tet of positive volume.
// 0 if pa,pb,pc,pd are coplanar.
// -1 if pa,pb,pc,pd forms a tet of negative volume.
template <typename Scalar>
IGL_INLINE short orient3D(
const Scalar pa[3],
const Scalar pb[3],
const Scalar pc[3],
const Scalar pd[3]);
}
}
}
#ifndef IGL_STATIC_LIBRARY
# include "orient3D.cpp"
#endif
#endif
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