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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.
56 lines
2.4 KiB
C++
56 lines
2.4 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 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 "gaussian_curvature.h"
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#include "internal_angles.h"
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#include "PI.h"
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#include <iostream>
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template <typename DerivedV, typename DerivedF, typename DerivedK>
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IGL_INLINE void igl::gaussian_curvature(
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const Eigen::PlainObjectBase<DerivedV>& V,
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const Eigen::PlainObjectBase<DerivedF>& F,
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Eigen::PlainObjectBase<DerivedK> & K)
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{
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using namespace Eigen;
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using namespace std;
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// internal corner angles
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Matrix<
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typename DerivedV::Scalar,
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DerivedF::RowsAtCompileTime,
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DerivedF::ColsAtCompileTime> A;
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internal_angles(V,F,A);
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K.resize(V.rows(),1);
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K.setConstant(V.rows(),1,2.*PI);
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assert(A.rows() == F.rows());
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assert(A.cols() == F.cols());
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assert(K.rows() == V.rows());
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assert(F.maxCoeff() < V.rows());
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assert(K.cols() == 1);
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const int Frows = F.rows();
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//K_G(x_i) = (2π - ∑θj)
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//#ifndef IGL_GAUSSIAN_CURVATURE_OMP_MIN_VALUE
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//# define IGL_GAUSSIAN_CURVATURE_OMP_MIN_VALUE 1000
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//#endif
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//#pragma omp parallel for if (Frows>IGL_GAUSSIAN_CURVATURE_OMP_MIN_VALUE)
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for(int f = 0;f<Frows;f++)
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{
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// throw normal at each corner
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for(int j = 0; j < 3;j++)
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{
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// Q: Does this need to be critical?
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// H: I think so, sadly. Maybe there's a way to use reduction
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//#pragma omp critical
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K(F(f,j),0) -= A(f,j);
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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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template void igl::gaussian_curvature<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<double, -1, -1, 0, -1, -1> >(Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >&);
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template void igl::gaussian_curvature<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<double, -1, 1, 0, -1, 1> >(Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 1, 0, -1, 1> >&);
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#endif
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