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Merged branch 'dev_native' into lm_sla_supports_auto

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Added igl library files
This commit is contained in:
Lukas Matena 2018-10-26 15:45:52 +02:00
commit 7681d00ee5
2865 changed files with 142806 additions and 22325 deletions
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33
src/igl/inradius.cpp Normal file
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// This file is part of libigl, a simple c++ geometry processing library.
//
// Copyright (C) 2016 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/.
#include "inradius.h"
#include "edge_lengths.h"
#include "doublearea.h"
template <
typename DerivedV,
typename DerivedF,
typename DerivedR>
IGL_INLINE void igl::inradius(
const Eigen::PlainObjectBase<DerivedV> & V,
const Eigen::PlainObjectBase<DerivedF> & F,
Eigen::PlainObjectBase<DerivedR> & r)
{
Eigen::Matrix<typename DerivedV::Scalar,Eigen::Dynamic,3> l;
Eigen::Matrix<typename DerivedV::Scalar,Eigen::Dynamic,1> R;
igl::edge_lengths(V,F,l);
// If R is the circumradius,
// R*r = (abc)/(2*(a+b+c))
// R = abc/(4*area)
// r(abc/(4*area)) = (abc)/(2*(a+b+c))
// r/(4*area) = 1/(2*(a+b+c))
// r = (2*area)/(a+b+c)
DerivedR A;
igl::doublearea(l,0.,A);
r = A.array() /l.array().rowwise().sum();
}