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https://github.com/SoftFever/OrcaSlicer.git
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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.
47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2017 Alec Jacobson <alecjacobson@gmail.com>
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// and Oded Stein <oded.stein@columbia.edu>
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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 IGL_FEM_HESSIAN_H
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#define IGL_FEM_HESSIAN_H
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#include "igl_inline.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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// Constructs the finite element Hessian matrix
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// as described in https://arxiv.org/abs/1707.04348,
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// Natural Boundary Conditions for Smoothing in Geometry Processing
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// (Oded Stein, Eitan Grinspun, Max Wardetzky, Alec Jacobson)
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// The interior vertices are NOT set to zero yet.
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//
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// Inputs:
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// V #V by dim list of mesh vertex positions
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// F #F by 3 list of mesh faces (must be triangles)
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// Outputs:
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// H #V by #V Hessian energy matrix, each column i
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// corresponding to V(i,:)
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//
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//
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//
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template <typename DerivedV, typename DerivedF, typename Scalar>
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IGL_INLINE void hessian(
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const Eigen::MatrixBase<DerivedV> & V,
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const Eigen::MatrixBase<DerivedF> & F,
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Eigen::SparseMatrix<Scalar>& H);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "hessian.cpp"
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#endif
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#endif
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