52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
|
// 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/.
|
||
|
|
#ifndef IGL_CIRCULATION_H
|
||
|
|
#define IGL_CIRCULATION_H
|
||
|
|
#include "igl_inline.h"
|
||
|
|
#include <Eigen/Core>
|
||
|
|
#include <vector>
|
||
|
|
|
||
|
|
namespace igl
|
||
|
|
{
|
||
|
|
// Return list of faces around the end point of an edge. Assumes
|
||
|
|
// data-structures are built from an edge-manifold **closed** mesh.
|
||
|
|
//
|
||
|
|
// Inputs:
|
||
|
|
// e index into E of edge to circulate
|
||
|
|
// ccw whether to _continue_ in ccw direction of edge (circulate around
|
||
|
|
// E(e,1))
|
||
|
|
// EMAP #F*3 list of indices into E, mapping each directed edge to unique
|
||
|
|
// unique edge in E
|
||
|
|
// EF #E by 2 list of edge flaps, EF(e,0)=f means e=(i-->j) is the edge of
|
||
|
|
// F(f,:) opposite the vth corner, where EI(e,0)=v. Similarly EF(e,1) "
|
||
|
|
// e=(j->i)
|
||
|
|
// EI #E by 2 list of edge flap corners (see above).
|
||
|
|
// Returns list of faces touched by circulation (in cyclically order).
|
||
|
|
//
|
||
|
|
// See also: edge_flaps
|
||
|
|
IGL_INLINE std::vector<int> circulation(
|
||
|
|
const int e,
|
||
|
|
const bool ccw,
|
||
|
|
const Eigen::VectorXi & EMAP,
|
||
|
|
const Eigen::MatrixXi & EF,
|
||
|
|
const Eigen::MatrixXi & EI);
|
||
|
|
// Wrapper with VectorXi output.
|
||
|
|
IGL_INLINE void circulation(
|
||
|
|
const int e,
|
||
|
|
const bool ccw,
|
||
|
|
const Eigen::VectorXi & EMAP,
|
||
|
|
const Eigen::MatrixXi & EF,
|
||
|
|
const Eigen::MatrixXi & EI,
|
||
|
|
Eigen::VectorXi & vN);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifndef IGL_STATIC_LIBRARY
|
||
|
|
# include "circulation.cpp"
|
||
|
|
#endif
|
||
|
|
#endif
|