75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2016 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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#include "setunion.h"
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#include "unique.h"
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template <
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typename DerivedA,
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typename DerivedB,
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typename DerivedC,
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typename DerivedIA,
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typename DerivedIB>
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IGL_INLINE void igl::setunion(
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const Eigen::DenseBase<DerivedA> & A,
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const Eigen::DenseBase<DerivedB> & B,
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Eigen::PlainObjectBase<DerivedC> & C,
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Eigen::PlainObjectBase<DerivedIA> & IA,
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Eigen::PlainObjectBase<DerivedIB> & IB)
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{
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DerivedC CS(A.size()+B.size(),1);
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{
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int k = 0;
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for(int j = 0;j<A.cols();j++)
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{
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for(int i = 0;i<A.rows();i++)
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{
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CS(k++) = A(i,j);
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}
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}
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for(int j = 0;j<B.cols();j++)
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{
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for(int i = 0;i<B.rows();i++)
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{
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CS(k++) = B(i,j);
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}
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}
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assert(k==CS.size());
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}
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DerivedIA IAC;
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{
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DerivedIA IC;
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unique(CS,C,IAC,IC);
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}
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const int nia = (IAC.array()<A.size()).count();
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IA.resize(nia);
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IB.resize(IAC.size() - nia);
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{
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int ka = 0;
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int kb = 0;
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for(int i = 0;i<IAC.size();i++)
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{
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if(IAC(i)<A.size())
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{
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IA(ka++) = IAC(i);
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}else
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{
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IB(kb++) = IAC(i)-A.size();
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}
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}
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assert(ka == IA.size());
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assert(kb == IB.size());
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}
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}
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#ifdef IGL_STATIC_LIBRARY
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// Explicit template instantiation
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// generated by autoexplicit.sh
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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> >&);
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#endif
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