cotmatrix.h

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// This file is part of libigl, a simple c++ geometry processing library.
// 
// Copyright (C) 2014 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/.
#ifndef IGL_COTMATRIX_H
#define IGL_COTMATRIX_H
#include "igl_inline.h"
 
#include <Eigen/Dense>
#include <Eigen/Sparse>
 
// History:
//  Used const references rather than copying the entire mesh 
//    Alec 9 October 2011
//  removed cotan (uniform weights) optional parameter it was building a buggy
//    half of the uniform laplacian, please see adjacency_matrix instead 
//    Alec 9 October 2011
 
namespace igl 
{
  template <typename DerivedV, typename DerivedF, typename Scalar>
  IGL_INLINE void cotmatrix(
    const Eigen::MatrixBase<DerivedV> & V, 
    const Eigen::MatrixBase<DerivedF> & F, 
    Eigen::SparseMatrix<Scalar>& L);
  template <
    typename DerivedV, 
    typename DerivedI, 
    typename DerivedC, 
    typename Scalar>
  IGL_INLINE void cotmatrix(
    const Eigen::MatrixBase<DerivedV> & V, 
    const Eigen::MatrixBase<DerivedI> & I, 
    const Eigen::MatrixBase<DerivedC> & C, 
    Eigen::SparseMatrix<Scalar>& L,
    Eigen::SparseMatrix<Scalar>& M,
    Eigen::SparseMatrix<Scalar>& P);
}
 
#ifndef IGL_STATIC_LIBRARY
#  include "cotmatrix.cpp"
#endif
 
#endif