85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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//
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// remove_unreferenced.h
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// Preview3D
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//
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// Created by Daniele Panozzo on 17/11/11.
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#ifndef IGL_REMOVE_UNREFERENCED_H
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#define IGL_REMOVE_UNREFERENCED_H
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#include "igl_inline.h"
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#include <Eigen/Core>
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namespace igl
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{
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// Remove unreferenced vertices from V, updating F accordingly
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//
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// Input:
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// V #V by dim list of mesh vertex positions
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// F #F by ss list of simplices (Values of -1 are quitely skipped)
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// Outputs:
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// NV #NV by dim list of mesh vertex positions
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// NF #NF by ss list of simplices
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// I #V by 1 list of indices such that: NF = IM(F) and NT = IM(T)
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// and V(find(IM<=size(NV,1)),:) = NV
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// J #NV by 1 list, such that NV = V(J,:)
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//
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//
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedNV,
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typename DerivedNF,
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typename DerivedI>
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IGL_INLINE void remove_unreferenced(
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const Eigen::MatrixBase<DerivedV> &V,
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const Eigen::MatrixBase<DerivedF> &F,
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Eigen::PlainObjectBase<DerivedNV> &NV,
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Eigen::PlainObjectBase<DerivedNF> &NF,
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Eigen::PlainObjectBase<DerivedI> &I);
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedNV,
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typename DerivedNF,
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typename DerivedI,
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typename DerivedJ>
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IGL_INLINE void remove_unreferenced(
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const Eigen::MatrixBase<DerivedV> &V,
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const Eigen::MatrixBase<DerivedF> &F,
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Eigen::PlainObjectBase<DerivedNV> &NV,
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Eigen::PlainObjectBase<DerivedNF> &NF,
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Eigen::PlainObjectBase<DerivedI> &I,
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Eigen::PlainObjectBase<DerivedJ> &J);
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// Inputs:
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// n number of vertices (possibly greater than F.maxCoeff()+1)
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// F #F by ss list of simplices
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// Outputs:
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// IM #V by 1 list of indices such that: NF = IM(F) and NT = IM(T)
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// and V(find(IM<=size(NV,1)),:) = NV
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// J #RV by 1 list, such that RV = V(J,:)
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//
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template <
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typename DerivedF,
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typename DerivedI,
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typename DerivedJ>
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IGL_INLINE void remove_unreferenced(
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const size_t n,
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const Eigen::MatrixBase<DerivedF> &F,
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Eigen::PlainObjectBase<DerivedI> &I,
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Eigen::PlainObjectBase<DerivedJ> &J);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "remove_unreferenced.cpp"
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#endif
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#endif
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