You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
33 lines
1.3 KiB
33 lines
1.3 KiB
// This file is part of libigl, a simple c++ geometry processing library.
|
|
//
|
|
// Copyright (C) 2023 Alec Jacobson
|
|
//
|
|
// 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 "lscm_hessian.h"
|
|
#include "vector_area_matrix.h"
|
|
#include "cotmatrix.h"
|
|
#include "repdiag.h"
|
|
template <typename DerivedV, typename DerivedF, typename QScalar>
|
|
void igl::lscm_hessian(
|
|
const Eigen::MatrixBase<DerivedV> & V,
|
|
const Eigen::MatrixBase<DerivedF> & F,
|
|
Eigen::SparseMatrix<QScalar> & Q)
|
|
{
|
|
// Assemble the area matrix (note that A is #Vx2 by #Vx2)
|
|
Eigen::SparseMatrix<QScalar> A;
|
|
igl::vector_area_matrix(F,A);
|
|
// Assemble the cotan laplacian matrix
|
|
Eigen::SparseMatrix<QScalar> L;
|
|
igl::cotmatrix(V,F,L);
|
|
Eigen::SparseMatrix<QScalar> L_flat;
|
|
igl::repdiag(L,2,L_flat);
|
|
Q = -L_flat - 2.*A;
|
|
}
|
|
|
|
#ifdef IGL_STATIC_LIBRARY
|
|
// Explicit template instantiation
|
|
// generated by autoexplicit.sh
|
|
template void igl::lscm_hessian<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, double>(Eigen::MatrixBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::MatrixBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::SparseMatrix<double, 0, int>&);
|
|
#endif
|
|
|