57 lines
2.3 KiB
C++
57 lines
2.3 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2016 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 "point_solid_signed_squared_distance.h"
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#include "points_inside_component.h"
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#include "point_mesh_squared_distance.h"
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#include "../../list_to_matrix.h"
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#include "../../slice_mask.h"
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#include <vector>
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#include <Eigen/Core>
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template <
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typename DerivedQ,
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typename DerivedVB,
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typename DerivedFB,
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typename DerivedD>
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IGL_INLINE void igl::copyleft::cgal::point_solid_signed_squared_distance(
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const Eigen::PlainObjectBase<DerivedQ> & Q,
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const Eigen::PlainObjectBase<DerivedVB> & VB,
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const Eigen::PlainObjectBase<DerivedFB> & FB,
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Eigen::PlainObjectBase<DerivedD> & D)
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{
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// compute unsigned distances
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Eigen::VectorXi I;
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DerivedVB C;
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point_mesh_squared_distance<CGAL::Epeck>(Q,VB,FB,D,I,C);
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// Collect queries that have non-zero distance
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Eigen::Array<bool,Eigen::Dynamic,1> NZ = D.array()!=0;
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// Compute sign for non-zero distance queries
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DerivedQ QNZ;
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slice_mask(Q,NZ,1,QNZ);
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Eigen::Array<bool,Eigen::Dynamic,1> DNZ;
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igl::copyleft::cgal::points_inside_component(VB,FB,QNZ,DNZ);
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// Apply sign to distances
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DerivedD S = DerivedD::Zero(Q.rows(),1);
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{
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int k = 0;
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for(int q = 0;q<Q.rows();q++)
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{
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if(NZ(q))
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{
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D(q) *= DNZ(k++) ? -1. : 1.;
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}
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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::copyleft::cgal::point_solid_signed_squared_distance<Eigen::Matrix<CGAL::Lazy_exact_nt<CGAL::Gmpq>, -1, 3, 0, -1, 3>, Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<CGAL::Lazy_exact_nt<CGAL::Gmpq>, -1, 1, 0, -1, 1> >(Eigen::PlainObjectBase<Eigen::Matrix<CGAL::Lazy_exact_nt<CGAL::Gmpq>, -1, 3, 0, -1, 3> > const&, 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<CGAL::Lazy_exact_nt<CGAL::Gmpq>, -1, 1, 0, -1, 1> >&);
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#endif
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