97f515985d
git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@2 fdac6126-5c0c-442c-9429-916003d36597
135 lines
4.5 KiB
C++
135 lines
4.5 KiB
C++
//=============================================================================
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//
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// OpenMesh
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// Copyright (C) 2003 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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//
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// License
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published
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// by the Free Software Foundation, version 2.1.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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//-----------------------------------------------------------------------------
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//
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// $Revision: 1801 $
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// $Date: 2008-05-19 11:53:56 +0200 (Mo, 19. Mai 2008) $
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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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