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AutoPropertyHandleT.hh
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42 /*===========================================================================*\
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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;
71  Self;
72 protected:
73  Mesh* m_;
74  bool own_property_;//ref counting?
75 
76 public:
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 
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 //=============================================================================
Definition: AutoPropertyHandleT.hh:63
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:64

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