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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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src/igl/snap_points.cpp Normal file
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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/.
#include "snap_points.h"
#include <cassert>
#include <limits>
template <
typename DerivedC,
typename DerivedV,
typename DerivedI,
typename DerivedminD,
typename DerivedVI>
IGL_INLINE void igl::snap_points(
const Eigen::PlainObjectBase<DerivedC > & C,
const Eigen::PlainObjectBase<DerivedV > & V,
Eigen::PlainObjectBase<DerivedI > & I,
Eigen::PlainObjectBase<DerivedminD > & minD,
Eigen::PlainObjectBase<DerivedVI > & VI)
{
snap_points(C,V,I,minD);
const int m = C.rows();
VI.resize(m,V.cols());
for(int c = 0;c<m;c++)
{
VI.row(c) = V.row(I(c));
}
}
template <
typename DerivedC,
typename DerivedV,
typename DerivedI,
typename DerivedminD>
IGL_INLINE void igl::snap_points(
const Eigen::PlainObjectBase<DerivedC > & C,
const Eigen::PlainObjectBase<DerivedV > & V,
Eigen::PlainObjectBase<DerivedI > & I,
Eigen::PlainObjectBase<DerivedminD > & minD)
{
using namespace std;
const int n = V.rows();
const int m = C.rows();
assert(V.cols() == C.cols() && "Dimensions should match");
// O(m*n)
//
// I believe there should be a way to do this in O(m*log(n) + n) assuming
// reasonably distubed points.
I.resize(m,1);
typedef typename DerivedV::Scalar Scalar;
minD.setConstant(m,1,numeric_limits<Scalar>::max());
for(int v = 0;v<n;v++)
{
for(int c = 0;c<m;c++)
{
const Scalar d = (C.row(c) - V.row(v)).squaredNorm();
if(d < minD(c))
{
minD(c,0) = d;
I(c,0) = v;
}
}
}
}
template <
typename DerivedC,
typename DerivedV,
typename DerivedI>
IGL_INLINE void igl::snap_points(
const Eigen::PlainObjectBase<DerivedC > & C,
const Eigen::PlainObjectBase<DerivedV > & V,
Eigen::PlainObjectBase<DerivedI > & I)
{
Eigen::Matrix<typename DerivedC::Scalar,DerivedC::RowsAtCompileTime,1> minD;
return igl::snap_points(C,V,I,minD);
}
#ifdef IGL_STATIC_LIBRARY
// Explicit template instantiation
template void igl::snap_points<Eigen::Matrix<double, 1, 3, 1, 1, 3>, Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, 1, 0, -1, 1>, Eigen::Matrix<double, -1, 1, 0, -1, 1> >(Eigen::PlainObjectBase<Eigen::Matrix<double, 1, 3, 1, 1, 3> > const&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 1, 0, -1, 1> >&);
template void igl::snap_points<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, 1, 0, -1, 1> >(Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&);
#endif