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AutoPropertyHandleT.hh
1 /* ========================================================================= *
2 * *
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5 * Department of Computer Graphics and Multimedia *
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40 * ========================================================================= */
41
42 /*===========================================================================*\
43 * *
44 * $Revision$ *
45 * $Date$ *
46 * *
47 \*===========================================================================*/
48
49 #ifndef OPENMESH_AutoPropertyHandleT_HH
50 #define OPENMESH_AutoPropertyHandleT_HH
51
52 //== INCLUDES =================================================================
53 #include <assert.h>
54 #include <string>
55
56 //== NAMESPACES ===============================================================
57
58 namespace OpenMesh {
59
60 //== CLASS DEFINITION =========================================================
61
62 template <class Mesh_, class PropertyHandle_>
63 class AutoPropertyHandleT : public PropertyHandle_
64 {
65 public:
66 typedef Mesh_ Mesh;
67 typedef PropertyHandle_ PropertyHandle;
68 typedef PropertyHandle Base;
69 typedef typename PropertyHandle::Value Value;
70 typedef AutoPropertyHandleT<Mesh, PropertyHandle>
71 Self;
72 protected:
73 Mesh* m_;
74 bool own_property_;//ref counting?
75
76 public:
77 AutoPropertyHandleT()
78 : m_(NULL), own_property_(false)
79 {}
80
81 AutoPropertyHandleT(const Self& _other)
82 : Base(_other.idx()), m_(_other.m_), own_property_(false)
83 {}
84
85 explicit AutoPropertyHandleT(Mesh& _m, const std::string& _pp_name = std::string())
86 { add_property(_m, _pp_name); }
87
88 AutoPropertyHandleT(Mesh& _m, PropertyHandle _pph)
89 : Base(_pph.idx()), m_(&_m), own_property_(false)
90 {}
91
92 ~AutoPropertyHandleT()
93 {
94 if (own_property_)
95 {
96 m_->remove_property(*this);
97 }
98 }
99
100 inline void add_property(Mesh& _m, const std::string& _pp_name = std::string())
101 {
102 assert(!is_valid());
103 m_ = &_m;
104 own_property_ = _pp_name.empty() || !m_->get_property_handle(*this, _pp_name);
105 if (own_property_)
106 {
107 m_->add_property(*this, _pp_name);
108 }
109 }
110
111 inline void remove_property()
112 {
113 assert(own_property_);//only the owner can delete the property
114 m_->remove_property(*this);
115 own_property_ = false;
116 invalidate();
117 }
118
119 template <class _Handle>
120 inline Value& operator [] (_Handle _hnd)
121 { return m_->property(*this, _hnd); }
122
123 template <class _Handle>
124 inline const Value& operator [] (_Handle _hnd) const
125 { return m_->property(*this, _hnd); }
126
127 inline bool own_property() const
128 { return own_property_; }
129
130 inline void free_property()
131 { own_property_ = false; }
132 };
133
134 //=============================================================================
135 } // namespace OpenMesh
136 //=============================================================================
137 #endif // OPENMESH_AutoPropertyHandleT_HH defined
138 //=============================================================================
OpenMesh
Definition: MeshItems.hh:64
OpenMesh::AutoPropertyHandleT
Definition: AutoPropertyHandleT.hh:63