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BaseProperty.hh
1 /*===========================================================================*\
2 * *
3 * OpenMesh *
4 * Copyright (C) 2001-2012 by Computer Graphics Group, RWTH Aachen *
5 * www.openmesh.org *
6 * *
7 *---------------------------------------------------------------------------*
8 * This file is part of OpenMesh. *
9 * *
10 * OpenMesh is free software: you can redistribute it and/or modify *
11 * it under the terms of the GNU Lesser General Public License as *
12 * published by the Free Software Foundation, either version 3 of *
13 * the License, or (at your option) any later version with the *
14 * following exceptions: *
15 * *
16 * If other files instantiate templates or use macros *
17 * or inline functions from this file, or you compile this file and *
18 * link it with other files to produce an executable, this file does *
19 * not by itself cause the resulting executable to be covered by the *
20 * GNU Lesser General Public License. This exception does not however *
21 * invalidate any other reasons why the executable file might be *
22 * covered by the GNU Lesser General Public License. *
23 * *
24 * OpenMesh is distributed in the hope that it will be useful, *
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
27 * GNU Lesser General Public License for more details. *
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33 \*===========================================================================*/
34
35 /*===========================================================================*\
36 * *
37 * $Revision: 736 $ *
38 * $Date: 2012-10-08 09:30:49 +0200 (Mo, 08. Okt 2012) $ *
39 * *
40 \*===========================================================================*/
41
42 #ifndef OPENMESH_BASEPROPERTY_HH
43 #define OPENMESH_BASEPROPERTY_HH
44
45 #include <string>
46 #include <OpenMesh/Core/IO/StoreRestore.hh>
47 #include <OpenMesh/Core/System/omstream.hh>
48
49 namespace OpenMesh {
50
51 //== CLASS DEFINITION =========================================================
52
58 class OPENMESHDLLEXPORT BaseProperty
59 {
60 public:
61
63 static const size_t UnknownSize = size_t(-1);
64
65 public:
66
81 BaseProperty(const std::string& _name = "<unknown>")
82 : name_(_name), persistent_(false)
83 {}
84
86 BaseProperty(const BaseProperty & _rhs)
87 : name_( _rhs.name_ ), persistent_( _rhs.persistent_ ) {}
88
90 virtual ~BaseProperty() {}
91
92 public: // synchronized array interface
93
95 virtual void reserve(size_t _n) = 0;
96
98 virtual void resize(size_t _n) = 0;
99
101 virtual void clear() = 0;
102
104 virtual void push_back() = 0;
105
107 virtual void swap(size_t _i0, size_t _i1) = 0;
108
110 virtual void copy(size_t _io, size_t _i1) = 0;
111
113 virtual BaseProperty* clone () const = 0;
114
115 public: // named property interface
116
118 const std::string& name() const { return name_; }
119
120 virtual void stats(std::ostream& _ostr) const;
121
122 public: // I/O support
123
125 bool persistent(void) const { return persistent_; }
126
129 virtual void set_persistent( bool _yn ) = 0;
130
132 virtual size_t n_elements() const = 0;
133
135 virtual size_t element_size() const = 0;
136
138 virtual size_t size_of() const
139 {
140 return size_of( n_elements() );
141 }
142
145 virtual size_t size_of(size_t _n_elem) const
146 {
147 return (element_size()!=UnknownSize)
148 ? (_n_elem*element_size())
149 : UnknownSize;
150 }
151
153 virtual size_t store( std::ostream& _ostr, bool _swap ) const = 0;
154
158 virtual size_t restore( std::istream& _istr, bool _swap ) = 0;
159
160 protected:
161
162 // To be used in a derived class, when overloading set_persistent()
163 template < typename T >
164 void check_and_set_persistent( bool _yn )
165 {
166 if ( _yn && !IO::is_streamable<T>() )
167 omerr() << "Warning! Type of property value is not binary storable!\n";
168 persistent_ = IO::is_streamable<T>() && _yn;
169 }
170
171 private:
172
173 std::string name_;
174 bool persistent_;
175 };
176
177 }//namespace OpenMesh
178
179 #endif //OPENMESH_BASEPROPERTY_HH
180
181