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update bundled_deps

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QIDI TECH
2024-11-09 14:05:44 +08:00
parent 17c9bfd127
commit cfc606fea9
1662 changed files with 710 additions and 168 deletions
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63
bundled_deps/libigl/igl/project_isometrically_to_plane.cpp Normal file
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// This file is part of libigl, a simple c++ geometry processing library.
//
// Copyright (C) 2015 Alec Jacobson <alecjacobson@gmail.com>
//
// This Source Code Form is subject to the terms of the Mozilla Public License
// v. 2.0. If a copy of the MPL was not distributed with this file, You can
// obtain one at http://mozilla.org/MPL/2.0/.
#include "project_isometrically_to_plane.h"
#include "edge_lengths.h"
template <
typename DerivedV,
typename DerivedF,
typename DerivedU,
typename DerivedUF,
typename Scalar>
IGL_INLINE void igl::project_isometrically_to_plane(
const Eigen::PlainObjectBase<DerivedV> & V,
const Eigen::PlainObjectBase<DerivedF> & F,
Eigen::PlainObjectBase<DerivedU> & U,
Eigen::PlainObjectBase<DerivedUF> & UF,
Eigen::SparseMatrix<Scalar>& I)
{
using namespace std;
using namespace Eigen;
assert(F.cols() == 3 && "F should contain triangles");
typedef DerivedV MatrixX;
MatrixX l;
edge_lengths(V,F,l);
// Number of faces
const int m = F.rows();
// First corner at origin
U = DerivedU::Zero(m*3,2);
// Second corner along x-axis
U.block(m,0,m,1) = l.col(2);
// Third corner rotated onto plane
U.block(m*2,0,m,1) =
(-l.col(0).array().square() +
l.col(1).array().square() +
l.col(2).array().square())/(2.*l.col(2).array());
U.block(m*2,1,m,1) =
(l.col(1).array().square()-U.block(m*2,0,m,1).array().square()).sqrt();
typedef Triplet<Scalar> IJV;
vector<IJV > ijv;
ijv.reserve(3*m);
UF.resize(m,3);
for(int f = 0;f<m;f++)
{
for(int c = 0;c<3;c++)
{
UF(f,c) = c*m+f;
ijv.push_back(IJV(F(f,c),c*m+f,1));
}
}
I.resize(V.rows(),m*3);
I.setFromTriplets(ijv.begin(),ijv.end());
}
#ifdef IGL_STATIC_LIBRARY
template void igl::project_isometrically_to_plane<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::Matrix<int, -1, -1, 0, -1, -1>, double>(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> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::SparseMatrix<double, 0, int>&);
#endif