97f515985d
git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@2 fdac6126-5c0c-442c-9429-916003d36597
116 lines
4.6 KiB
C++
116 lines
4.6 KiB
C++
/*===========================================================================*\
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* *
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* OpenMesh *
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* Copyright (C) 2001-2004 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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#ifndef OPENMESH_AutoPropertyHandleT_HH
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#define OPENMESH_AutoPropertyHandleT_HH
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//== INCLUDES =================================================================
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#include <assert.h>
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#include <string>
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//== NAMESPACES ===============================================================
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namespace OpenMesh {
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//== CLASS DEFINITION =========================================================
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template <class Mesh_, class PropertyHandle_>
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class AutoPropertyHandleT : public PropertyHandle_
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{
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public:
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typedef Mesh_ Mesh;
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typedef PropertyHandle_ PropertyHandle;
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typedef PropertyHandle Base;
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typedef typename PropertyHandle::Value Value;
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typedef AutoPropertyHandleT<Mesh, PropertyHandle>
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Self;
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protected:
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Mesh* m_;
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bool own_property_;//ref counting?
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public:
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AutoPropertyHandleT()
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: m_(NULL), own_property_(false)
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{}
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AutoPropertyHandleT(const Self& _other)
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: Base(_other.idx()), m_(_other.m_), own_property_(false)
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{}
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explicit AutoPropertyHandleT(Mesh& _m, const std::string& _pp_name = std::string())
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{ add_property(_m, _pp_name); }
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AutoPropertyHandleT(Mesh& _m, PropertyHandle _pph)
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: Base(_pph.idx()), m_(&_m), own_property_(false)
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{}
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~AutoPropertyHandleT()
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{
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if (own_property_)
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{
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m_->remove_property(*this);
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}
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}
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inline void add_property(Mesh& _m, const std::string& _pp_name = std::string())
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{
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assert(!is_valid());
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m_ = &_m;
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own_property_ = _pp_name.empty() || !m_->get_property_handle(*this, _pp_name);
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if (own_property_)
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{
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m_->add_property(*this, _pp_name);
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}
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}
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inline void remove_property()
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{
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assert(own_property_);//only the owner can delete the property
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m_->remove_property(*this);
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own_property_ = false;
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invalidate();
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}
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template <class _Handle>
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inline Value& operator [] (_Handle _hnd)
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{ return m_->property(*this, _hnd); }
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template <class _Handle>
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inline const Value& operator [] (_Handle _hnd) const
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{ return m_->property(*this, _hnd); }
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inline bool own_property() const
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{ return own_property_; }
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inline void free_property()
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{ own_property_ = false; }
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};
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//=============================================================================
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} // namespace OpenMesh
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//=============================================================================
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#endif // OPENMESH_AutoPropertyHandleT_HH defined
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//=============================================================================
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