34141f8d9a
git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@325 fdac6126-5c0c-442c-9429-916003d36597
146 lines
5.3 KiB
C++
146 lines
5.3 KiB
C++
/*===========================================================================*\
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* *
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* OpenMesh *
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* Copyright (C) 2001-2010 by Computer Graphics Group, RWTH Aachen *
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* www.openmesh.org *
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* *
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*---------------------------------------------------------------------------*
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* This file is part of OpenMesh. *
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* *
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* OpenMesh is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU Lesser General Public License as *
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* published by the Free Software Foundation, either version 3 of *
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* the License, or (at your option) any later version with the *
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* following exceptions: *
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* *
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* If other files instantiate templates or use macros *
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* or inline functions from this file, or you compile this file and *
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* link it with other files to produce an executable, this file does *
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* not by itself cause the resulting executable to be covered by the *
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* GNU Lesser General Public License. This exception does not however *
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* invalidate any other reasons why the executable file might be *
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* covered by the GNU Lesser General Public License. *
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* *
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* OpenMesh is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU LesserGeneral Public *
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* License along with OpenMesh. If not, *
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* see <http://www.gnu.org/licenses/>. *
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* *
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\*===========================================================================*/
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/*===========================================================================*\
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* *
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* $Revision$ *
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* $Date$ *
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* *
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\*===========================================================================*/
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#ifndef OPENMESH_HANDLES_HH
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#define OPENMESH_HANDLES_HH
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//== INCLUDES =================================================================
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#include <OpenMesh/Core/System/config.h>
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#include <iostream>
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//== NAMESPACES ===============================================================
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namespace OpenMesh {
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//== CLASS DEFINITION =========================================================
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/// Base class for all handle types
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class BaseHandle
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{
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public:
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explicit BaseHandle(int _idx=-1) : idx_(_idx) {}
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/// Get the underlying index of this handle
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int idx() const { return idx_; }
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/// The handle is valid iff the index is not equal to -1.
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bool is_valid() const { return idx_ != -1; }
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/// reset handle to be invalid
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void reset() { idx_=-1; }
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/// reset handle to be invalid
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void invalidate() { idx_ = -1; }
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bool operator==(const BaseHandle& _rhs) const {
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return idx_ == _rhs.idx_;
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}
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bool operator!=(const BaseHandle& _rhs) const {
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return idx_ != _rhs.idx_;
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}
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bool operator<(const BaseHandle& _rhs) const {
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return idx_ < _rhs.idx_;
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}
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// this is to be used only by the iterators
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void __increment() { ++idx_; }
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void __decrement() { --idx_; }
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private:
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int idx_;
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};
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//-----------------------------------------------------------------------------
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/// Write handle \c _hnd to stream \c _os
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inline std::ostream& operator<<(std::ostream& _os, const BaseHandle& _hnd)
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{
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return (_os << _hnd.idx());
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}
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//-----------------------------------------------------------------------------
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/// Handle for a vertex entity
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struct VertexHandle : public BaseHandle
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{
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explicit VertexHandle(int _idx=-1) : BaseHandle(_idx) {}
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};
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/// Handle for a halfedge entity
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struct HalfedgeHandle : public BaseHandle
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{
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explicit HalfedgeHandle(int _idx=-1) : BaseHandle(_idx) {}
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};
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/// Handle for a edge entity
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struct EdgeHandle : public BaseHandle
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{
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explicit EdgeHandle(int _idx=-1) : BaseHandle(_idx) {}
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};
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/// Handle for a face entity
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struct FaceHandle : public BaseHandle
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{
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explicit FaceHandle(int _idx=-1) : BaseHandle(_idx) {}
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};
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//=============================================================================
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} // namespace OpenMesh
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//=============================================================================
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#endif // OPENMESH_HANDLES_HH
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//=============================================================================
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