PrusaSlicer/bundled_deps/libigl/igl/edge_collapse_is_valid.h
Martin Šach 21116995d7 Refactor CMake and improve #includes.
* 1. Remove all global include_directories.
* 2. Move 3d party dependencies from src to budled deps if possible.
* Unify and enforce one way of including headers:
    e.g. #include "libslic3r/GCode.hpp" vs #include "GCode.hpp"
    (always use the "libslic3r/GCode.hpp" option).
* Make all dependencies (also header only) a cmake target.
2024-07-08 15:36:46 +02:00

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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_EDGE_COLLAPSE_IS_VALID_H
#define IGL_EDGE_COLLAPSE_IS_VALID_H
#include "igl_inline.h"
#include <Eigen/Core>
namespace igl
{
// Assumes (V,F) is a closed manifold mesh (except for previouslly collapsed
// faces which should be set to:
// [IGL_COLLAPSE_EDGE_NULL IGL_COLLAPSE_EDGE_NULL IGL_COLLAPSE_EDGE_NULL].
// Tests whether collapsing exactly two faces and exactly 3 edges from E (e
// and one side of each face gets collapsed to the other) will result in a
// mesh with the same topology.
//
// Inputs:
// e index into E of edge to try to collapse. E(e,:) = [s d] or [d s] so
// that s<d, then d is collapsed to s.
// F #F by 3 list of face indices into V.
// E #E by 2 list of edge indices into V.
// 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 true if edge collapse is valid
IGL_INLINE bool edge_collapse_is_valid(
const int e,
const Eigen::MatrixXi & F,
const Eigen::MatrixXi & E,
const Eigen::VectorXi & EMAP,
const Eigen::MatrixXi & EF,
const Eigen::MatrixXi & EI);
}
#ifndef IGL_STATIC_LIBRARY
# include "edge_collapse_is_valid.cpp"
#endif
#endif