2ae2672ee9
Fixing dep build script on Windows and removing some warnings. Use bundled igl by default. Not building with the dependency scripts if not explicitly stated. This way, it will stay in Fix the libigl patch to include C source files in header only mode.
52 lines
1.9 KiB
C++
52 lines
1.9 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2015 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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#ifndef CROUZEIX_RAVIART_MASSMATRIX_H
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#define CROUZEIX_RAVIART_MASSMATRIX_H
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#include <Eigen/Dense>
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#include <Eigen/Sparse>
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namespace igl
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{
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// CROUZEIX_RAVIART_MASSMATRIX Compute the Crouzeix-Raviart mass matrix where
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// M(e,e) is just the sum of the areas of the triangles on either side of an
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// edge e.
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//
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// See for example "Discrete Quadratic Curvature Energies" [Wardetzky, Bergou,
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// Harmon, Zorin, Grinspun 2007]
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//
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// Inputs:
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// V #V by dim list of vertex positions
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// F #F by 3/4 list of triangle/tetrahedron indices
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// Outputs:
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// M #E by #E edge/face-based diagonal mass matrix
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// E #E by 2/3 list of edges/faces
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// EMAP #F*3/4 list of indices mapping allE to E
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//
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// See also: crouzeix_raviart_cotmatrix
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template <typename MT, typename DerivedV, typename DerivedF, typename DerivedE, typename DerivedEMAP>
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void crouzeix_raviart_massmatrix(
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const Eigen::MatrixBase<DerivedV> & V,
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const Eigen::MatrixBase<DerivedF> & F,
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Eigen::SparseMatrix<MT> & M,
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Eigen::PlainObjectBase<DerivedE> & E,
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Eigen::PlainObjectBase<DerivedEMAP> & EMAP);
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// wrapper if E and EMAP are already computed (better match!)
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template <typename MT, typename DerivedV, typename DerivedF, typename DerivedE, typename DerivedEMAP>
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void crouzeix_raviart_massmatrix(
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const Eigen::MatrixBase<DerivedV> & V,
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const Eigen::MatrixBase<DerivedF> & F,
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const Eigen::MatrixBase<DerivedE> & E,
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const Eigen::MatrixBase<DerivedEMAP> & EMAP,
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Eigen::SparseMatrix<MT> & M);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "crouzeix_raviart_massmatrix.cpp"
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#endif
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#endif
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