36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
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// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2018 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef IGL_TAN_HALF_ANGLE_H
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#define IGL_TAN_HALF_ANGLE_H
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#include "igl_inline.h"
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namespace igl
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{
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// TAN_HALF_ANGLE Compute the tangent of half of the angle opposite the side
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// with length a, in a triangle with side lengths (a,b,c).
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//
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// Inputs:
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// a scalar edge length of first side of triangle
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// b scalar edge length of second side of triangle
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// c scalar edge length of third side of triangle
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// Returns tangent of half of the angle opposite side with length a
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//
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// See also: is_intrinsic_delaunay
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template < typename Scalar>
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IGL_INLINE Scalar tan_half_angle(
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const Scalar & a,
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const Scalar & b,
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const Scalar & c);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "tan_half_angle.cpp"
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#endif
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#endif
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