75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
|
// 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 "setunion.h"
|
||
|
|
#include "unique.h"
|
||
|
|
|
||
|
|
template <
|
||
|
|
typename DerivedA,
|
||
|
|
typename DerivedB,
|
||
|
|
typename DerivedC,
|
||
|
|
typename DerivedIA,
|
||
|
|
typename DerivedIB>
|
||
|
|
IGL_INLINE void igl::setunion(
|
||
|
|
const Eigen::DenseBase<DerivedA> & A,
|
||
|
|
const Eigen::DenseBase<DerivedB> & B,
|
||
|
|
Eigen::PlainObjectBase<DerivedC> & C,
|
||
|
|
Eigen::PlainObjectBase<DerivedIA> & IA,
|
||
|
|
Eigen::PlainObjectBase<DerivedIB> & IB)
|
||
|
|
{
|
||
|
|
DerivedC CS(A.size()+B.size(),1);
|
||
|
|
{
|
||
|
|
int k = 0;
|
||
|
|
for(int j = 0;j<A.cols();j++)
|
||
|
|
{
|
||
|
|
for(int i = 0;i<A.rows();i++)
|
||
|
|
{
|
||
|
|
CS(k++) = A(i,j);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
for(int j = 0;j<B.cols();j++)
|
||
|
|
{
|
||
|
|
for(int i = 0;i<B.rows();i++)
|
||
|
|
{
|
||
|
|
CS(k++) = B(i,j);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
assert(k==CS.size());
|
||
|
|
}
|
||
|
|
DerivedIA IAC;
|
||
|
|
{
|
||
|
|
DerivedIA IC;
|
||
|
|
unique(CS,C,IAC,IC);
|
||
|
|
}
|
||
|
|
const int nia = (IAC.array()<A.size()).count();
|
||
|
|
IA.resize(nia);
|
||
|
|
IB.resize(IAC.size() - nia);
|
||
|
|
{
|
||
|
|
int ka = 0;
|
||
|
|
int kb = 0;
|
||
|
|
for(int i = 0;i<IAC.size();i++)
|
||
|
|
{
|
||
|
|
if(IAC(i)<A.size())
|
||
|
|
{
|
||
|
|
IA(ka++) = IAC(i);
|
||
|
|
}else
|
||
|
|
{
|
||
|
|
IB(kb++) = IAC(i)-A.size();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
assert(ka == IA.size());
|
||
|
|
assert(kb == IB.size());
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef IGL_STATIC_LIBRARY
|
||
|
|
// Explicit template instantiation
|
||
|
|
// generated by autoexplicit.sh
|
||
|
|
template void igl::setunion<Eigen::Matrix<int, -1, 1, 0, -1, 1>, Eigen::Matrix<int, -1, 1, 0, -1, 1>, Eigen::Matrix<int, -1, 1, 0, -1, 1>, Eigen::Matrix<int, -1, 1, 0, -1, 1>, Eigen::Matrix<int, -1, 1, 0, -1, 1> >(Eigen::DenseBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> > const&, Eigen::DenseBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&);
|
||
|
|
#endif
|