Developer Documentation

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