53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
|
|
//
|
|
// Copyright (C) 2016 Qingan Zhou <qnzhou@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/.
|
|
|
|
#ifndef IGL_FLIP_EDGE_H
|
|
#define IGL_FLIP_EDGE_H
|
|
|
|
#include "igl_inline.h"
|
|
#include <Eigen/Core>
|
|
#include <vector>
|
|
|
|
namespace igl
|
|
{
|
|
// Flip an edge in a triangle mesh. The edge specified by uei must have
|
|
// exactly **two** adjacent faces. Violation will result in exception.
|
|
// Another warning: edge flipping could convert manifold mesh into
|
|
// non-manifold.
|
|
//
|
|
// Inputs:
|
|
// F #F by 3 list of triangles.
|
|
// E #F*3 by 2 list of all of directed edges
|
|
// uE #uE by 2 list of unique undirected edges
|
|
// EMAP #F*3 list of indices into uE, mapping each directed edge to unique
|
|
// undirected edge
|
|
// uE2E #uE list of lists of indices into E of coexisting edges
|
|
// ue index into uE the edge to be flipped.
|
|
//
|
|
// Output:
|
|
// Updated F, E, uE, EMAP and uE2E.
|
|
template <
|
|
typename DerivedF,
|
|
typename DerivedE,
|
|
typename DeriveduE,
|
|
typename DerivedEMAP,
|
|
typename uE2EType>
|
|
IGL_INLINE void flip_edge(
|
|
Eigen::PlainObjectBase<DerivedF> & F,
|
|
Eigen::PlainObjectBase<DerivedE> & E,
|
|
Eigen::PlainObjectBase<DeriveduE> & uE,
|
|
Eigen::PlainObjectBase<DerivedEMAP> & EMAP,
|
|
std::vector<std::vector<uE2EType> > & uE2E,
|
|
const size_t uei);
|
|
}
|
|
|
|
#ifndef IGL_STATIC_LIBRARY
|
|
# include "flip_edge.cpp"
|
|
#endif
|
|
#endif
|