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Merged branch 'dev_native' into lm_sla_supports_auto

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Added igl library files
This commit is contained in:
Lukas Matena 2018-10-26 15:45:52 +02:00
commit 7681d00ee5
2865 changed files with 142806 additions and 22325 deletions
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54
src/igl/map_vertices_to_circle.cpp Executable file
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// This file is part of libigl, a simple c++ geometry processing library.
//
// Copyright (C) 2014 Stefan Brugger <stefanbrugger@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 "map_vertices_to_circle.h"
#include "PI.h"
IGL_INLINE void igl::map_vertices_to_circle(
const Eigen::MatrixXd& V,
const Eigen::VectorXi& bnd,
Eigen::MatrixXd& UV)
{
// Get sorted list of boundary vertices
std::vector<int> interior,map_ij;
map_ij.resize(V.rows());
std::vector<bool> isOnBnd(V.rows(),false);
for (int i = 0; i < bnd.size(); i++)
{
isOnBnd[bnd[i]] = true;
map_ij[bnd[i]] = i;
}
for (int i = 0; i < (int)isOnBnd.size(); i++)
{
if (!isOnBnd[i])
{
map_ij[i] = interior.size();
interior.push_back(i);
}
}
// Map boundary to unit circle
std::vector<double> len(bnd.size());
len[0] = 0.;
for (int i = 1; i < bnd.size(); i++)
{
len[i] = len[i-1] + (V.row(bnd[i-1]) - V.row(bnd[i])).norm();
}
double total_len = len[len.size()-1] + (V.row(bnd[0]) - V.row(bnd[bnd.size()-1])).norm();
UV.resize(bnd.size(),2);
for (int i = 0; i < bnd.size(); i++)
{
double frac = len[i] * 2. * igl::PI / total_len;
UV.row(map_ij[bnd[i]]) << cos(frac), sin(frac);
}
}