36 lines
1.1 KiB
C++
36 lines
1.1 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
|
|
//
|
|
// Copyright (C) 2018 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_TAN_HALF_ANGLE_H
|
|
#define IGL_TAN_HALF_ANGLE_H
|
|
#include "igl_inline.h"
|
|
namespace igl
|
|
{
|
|
// TAN_HALF_ANGLE Compute the tangent of half of the angle opposite the side
|
|
// with length a, in a triangle with side lengths (a,b,c).
|
|
//
|
|
// Inputs:
|
|
// a scalar edge length of first side of triangle
|
|
// b scalar edge length of second side of triangle
|
|
// c scalar edge length of third side of triangle
|
|
// Returns tangent of half of the angle opposite side with length a
|
|
//
|
|
// See also: is_intrinsic_delaunay
|
|
template < typename Scalar>
|
|
IGL_INLINE Scalar tan_half_angle(
|
|
const Scalar & a,
|
|
const Scalar & b,
|
|
const Scalar & c);
|
|
}
|
|
|
|
#ifndef IGL_STATIC_LIBRARY
|
|
# include "tan_half_angle.cpp"
|
|
#endif
|
|
|
|
#endif
|
|
|