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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.
74 lines
2.2 KiB
C++
74 lines
2.2 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2013 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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#include "adjacency_matrix.h"
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#include "verbose.h"
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#include <vector>
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template <typename DerivedF, typename T>
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IGL_INLINE void igl::adjacency_matrix(
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const Eigen::MatrixBase<DerivedF> & F,
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Eigen::SparseMatrix<T>& A)
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{
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using namespace std;
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using namespace Eigen;
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typedef typename DerivedF::Scalar Index;
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typedef Triplet<T> IJV;
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vector<IJV > ijv;
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ijv.reserve(F.size()*2);
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// Loop over **simplex** (i.e., **not quad**)
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for(int i = 0;i<F.rows();i++)
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{
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// Loop over this **simplex**
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for(int j = 0;j<F.cols();j++)
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for(int k = j+1;k<F.cols();k++)
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{
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// Get indices of edge: s --> d
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Index s = F(i,j);
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Index d = F(i,k);
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ijv.push_back(IJV(s,d,1));
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ijv.push_back(IJV(d,s,1));
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}
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}
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const Index n = F.maxCoeff()+1;
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A.resize(n,n);
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switch(F.cols())
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{
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case 3:
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A.reserve(6*(F.maxCoeff()+1));
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break;
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case 4:
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A.reserve(26*(F.maxCoeff()+1));
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break;
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}
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A.setFromTriplets(ijv.begin(),ijv.end());
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// Force all non-zeros to be one
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// Iterate over outside
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for(int k=0; k<A.outerSize(); ++k)
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{
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// Iterate over inside
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for(typename Eigen::SparseMatrix<T>::InnerIterator it (A,k); it; ++it)
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{
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assert(it.value() != 0);
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A.coeffRef(it.row(),it.col()) = 1;
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}
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}
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}
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#ifdef IGL_STATIC_LIBRARY
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// Explicit template instantiation
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// generated by autoexplicit.sh
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template void igl::adjacency_matrix<Eigen::Matrix<int, -1, -1, 0, -1, -1>, bool>(Eigen::MatrixBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::SparseMatrix<bool, 0, int>&);
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template void igl::adjacency_matrix<Eigen::Matrix<int, -1, -1, 0, -1, -1>, double>(Eigen::MatrixBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::SparseMatrix<double, 0, int>&);
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template void igl::adjacency_matrix<Eigen::Matrix<int, -1, -1, 0, -1, -1>, int>(Eigen::MatrixBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::SparseMatrix<int, 0, int>&);
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#endif
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