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// This file is part of libigl, a simple c++ geometry processing library.
//
// Copyright (C) 2019 Hanxiao Shen <hanxiao@cims.nyu.edu>
//
// 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_CUT_MESH_H
#define IGL_CUT_MESH_H
#include "igl_inline.h"
#include <Eigen/Core>
namespace igl
{
// Given a mesh and a list of edges that are to be cut, the function
// generates a new disk-topology mesh that has the cuts at its boundary.
//
//
// Known issues: Assumes mesh is edge-manifold.
//
// Inputs:
// V #V by 3 list of the vertex positions
// F #F by 3 list of the faces
// cuts #F by 3 list of boolean flags, indicating the edges that need to
// be cut (has 1 at the face edges that are to be cut, 0 otherwise)
// Outputs:
// Vn #V by 3 list of the vertex positions of the cut mesh. This matrix
// will be similar to the original vertices except some rows will be
// duplicated.
// Fn #F by 3 list of the faces of the cut mesh(must be triangles). This
// matrix will be similar to the original face matrix except some indices
// will be redirected to point to the newly duplicated vertices.
// I #V by 1 list of the map between Vn to original V index.
// In place mesh cut
template <typename DerivedV, typename DerivedF, typename DerivedC, typename DerivedI>
IGL_INLINE void cut_mesh(
Eigen::PlainObjectBase<DerivedV>& V,
Eigen::PlainObjectBase<DerivedF>& F,
const Eigen::MatrixBase<DerivedC>& cuts,
Eigen::PlainObjectBase<DerivedI>& I
);
template <typename DerivedV, typename DerivedF, typename DerivedFF, typename DerivedFFi, typename DerivedC, typename DerivedI>
IGL_INLINE void cut_mesh(
Eigen::PlainObjectBase<DerivedV>& V,
Eigen::PlainObjectBase<DerivedF>& F,
Eigen::MatrixBase<DerivedFF>& FF,
Eigen::MatrixBase<DerivedFFi>& FFi,
const Eigen::MatrixBase<DerivedC>& C,
Eigen::PlainObjectBase<DerivedI>& I
);
template <typename DerivedV, typename DerivedF, typename DerivedC>
IGL_INLINE void cut_mesh(
const Eigen::MatrixBase<DerivedV>& V,
const Eigen::MatrixBase<DerivedF>& F,
const Eigen::MatrixBase<DerivedC>& cuts,
Eigen::PlainObjectBase<DerivedV>& Vn,
Eigen::PlainObjectBase<DerivedF>& Fn
);
template <typename DerivedV, typename DerivedF, typename DerivedC, typename DerivedI>
IGL_INLINE void cut_mesh(
const Eigen::MatrixBase<DerivedV>& V,
const Eigen::MatrixBase<DerivedF>& F,
const Eigen::MatrixBase<DerivedC>& cuts,
Eigen::PlainObjectBase<DerivedV>& Vn,
Eigen::PlainObjectBase<DerivedF>& Fn,
Eigen::PlainObjectBase<DerivedI>& I
);
}
#ifndef IGL_STATIC_LIBRARY
#include "cut_mesh.cpp"
#endif
#endif