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Merged branch 'dev_native' into lm_sla_supports_auto

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Added igl library files
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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/mosek/bbw.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 "bbw.h"
#include "mosek_quadprog.h"
#include "../harmonic.h"
#include "../slice_into.h"
#include <Eigen/Sparse>
#include <iostream>
#include <cstdio>
template <
typename DerivedV,
typename DerivedEle,
typename Derivedb,
typename Derivedbc,
typename DerivedW>
IGL_INLINE bool igl::mosek::bbw(
const Eigen::PlainObjectBase<DerivedV> & V,
const Eigen::PlainObjectBase<DerivedEle> & Ele,
const Eigen::PlainObjectBase<Derivedb> & b,
const Eigen::PlainObjectBase<Derivedbc> & bc,
igl::BBWData & data,
igl::mosek::MosekData & mosek_data,
Eigen::PlainObjectBase<DerivedW> & W
)
{
using namespace std;
using namespace Eigen;
assert(!data.partition_unity && "partition_unity not implemented yet");
// number of domain vertices
int n = V.rows();
// number of handles
int m = bc.cols();
// Build biharmonic operator
Eigen::SparseMatrix<typename DerivedV::Scalar> Q;
harmonic(V,Ele,2,Q);
W.derived().resize(n,m);
// No linear terms
VectorXd c = VectorXd::Zero(n);
// No linear constraints
SparseMatrix<typename DerivedW::Scalar> A(0,n);
VectorXd uc(0,1),lc(0,1);
// Upper and lower box constraints (Constant bounds)
VectorXd ux = VectorXd::Ones(n);
VectorXd lx = VectorXd::Zero(n);
// Loop over handles
for(int i = 0;i<m;i++)
{
if(data.verbosity >= 1)
{
cout<<"BBW: Computing weight for handle "<<i+1<<" out of "<<m<<
"."<<endl;
}
VectorXd bci = bc.col(i);
VectorXd Wi;
// impose boundary conditions via bounds
slice_into(bci,b,ux);
slice_into(bci,b,lx);
bool r = mosek_quadprog(Q,c,0,A,lc,uc,lx,ux,mosek_data,Wi);
if(!r)
{
return false;
}
W.col(i) = Wi;
}
#ifndef NDEBUG
const double min_rowsum = W.rowwise().sum().array().abs().minCoeff();
if(min_rowsum < 0.1)
{
cerr<<"bbw.cpp: Warning, minimum row sum is very low. Consider more "
"active set iterations or enforcing partition of unity."<<endl;
}
#endif
return true;
}
#ifdef IGL_STATIC_LIBRARY
// Explicit template instantiation
template bool igl::mosek::bbw<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, 1, 0, -1, 1>, Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<double, -1, -1, 0, -1, -1> >(Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, igl::BBWData&, igl::mosek::MosekData&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >&);
#endif