You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
59 lines
1.9 KiB
59 lines
1.9 KiB
// This file is part of libigl, a simple c++ geometry processing library.
|
|
//
|
|
// Copyright (C) 2013 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/.
|
|
#ifndef IGL_EDGES_H
|
|
#define IGL_EDGES_H
|
|
#include "igl_inline.h"
|
|
|
|
#include <Eigen/Dense>
|
|
#include <Eigen/Sparse>
|
|
|
|
namespace igl
|
|
{
|
|
// Constructs a list of unique edges represented in a given mesh (V,F)
|
|
//
|
|
// Inputs:
|
|
// F #F by 3 list of mesh faces (must be triangles)
|
|
// or
|
|
// T #T x 4 matrix of indices of tet corners
|
|
// Outputs:
|
|
// E #E by 2 list of edges in no particular order
|
|
//
|
|
// See also: adjacency_matrix
|
|
template <typename DerivedF, typename DerivedE>
|
|
IGL_INLINE void edges(
|
|
const Eigen::MatrixBase<DerivedF> & F,
|
|
Eigen::PlainObjectBase<DerivedE> & E);
|
|
// Constructs a list of unique edges represented in a given polygon mesh.
|
|
//
|
|
// Inputs:
|
|
// I #I vectorized list of polygon corner indices into rows of some matrix V
|
|
// C #polygons+1 list of cumulative polygon sizes so that C(i+1)-C(i) =
|
|
// size of the ith polygon, and so I(C(i)) through I(C(i+1)-1) are the
|
|
// indices of the ith polygon
|
|
// Outputs:
|
|
// E #E by 2 list of edges in no particular order
|
|
template <typename DerivedI, typename DerivedC, typename DerivedE>
|
|
IGL_INLINE void edges(
|
|
const Eigen::MatrixBase<DerivedI> & I,
|
|
const Eigen::MatrixBase<DerivedC> & C,
|
|
Eigen::PlainObjectBase<DerivedE> & E);
|
|
// Inputs:
|
|
// A #V by #V symmetric adjacency matrix
|
|
// Outputs:
|
|
// E #E by 2 list of edges in no particular order
|
|
template <typename T, typename DerivedE>
|
|
IGL_INLINE void edges(
|
|
const Eigen::SparseMatrix<T> & A,
|
|
Eigen::PlainObjectBase<DerivedE> & E);
|
|
}
|
|
|
|
#ifndef IGL_STATIC_LIBRARY
|
|
# include "edges.cpp"
|
|
#endif
|
|
|
|
#endif
|
|
|