1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
// This is mul/mbl/mbl_selected_data_wrapper.h
#ifndef mbl_selected_data_wrapper_h
#define mbl_selected_data_wrapper_h
#ifdef VCL_NEEDS_PRAGMA_INTERFACE
#pragma interface
#endif
//:
// \file
// \author Ian Scott
// \brief A subset of an existing mbl_data_wrapper.
#include <vcl_string.h>
#include <vcl_vector.h>
#include <mbl/mbl_data_wrapper.h>
//: A subset of an existing mbl_data_wrapper.
// This wraps another mbl_data_wrapper, and acts like a rearrangement
// of the original data. The rearrangement does not have to refer
// to all of the original data, and can refer to the same data more than
// once.
template <class T>
class mbl_selected_data_wrapper: public mbl_data_wrapper<T>
{
mbl_data_wrapper<T> *data_;
vcl_vector<unsigned> selection_;
unsigned index_;
public:
//: Copy constructor.
mbl_selected_data_wrapper(const mbl_selected_data_wrapper<T>& p);
//: Constructor.
// This will take its own copy of selection and the data wrapper,
// but not the underlying data.
mbl_selected_data_wrapper(const mbl_data_wrapper<T>& data,
const vcl_vector<unsigned> &subset);
//: Default constructor.
mbl_selected_data_wrapper();
//: Default destructor.
virtual ~mbl_selected_data_wrapper();
//: Copy operator.
mbl_selected_data_wrapper<T>& operator=(const mbl_selected_data_wrapper<T>& b);
//: Set the wrappers data.
// This will take its own copy of selection and the data wrapper,
// but not the underlying data.
void set(const mbl_data_wrapper<T>& data,
const vcl_vector<unsigned> &selection);
//: Number of objects available.
virtual unsigned long size() const;
//: Reset so that current() returns first object.
virtual void reset();
//: Return current object.
virtual const T& current();
//: Move to next object, returning true if is valid.
virtual bool next();
//: Return current index.
// First example has index 0
virtual unsigned long index() const;
//: Move to element n.
// First example has index 0
virtual void set_index(unsigned long n);
//: Create copy on heap and return base pointer.
// This will create an independent iterator on the underlying data.
// The original data is not copied.
// Be careful of destruction of underlying data.
virtual mbl_data_wrapper< T >* clone() const ;
//: Name of the class.
virtual vcl_string is_a() const;
//: True if this is (or is derived from) class named s
virtual bool is_class(vcl_string const& s) const;
};
#endif // mbl_selected_data_wrapper_h
|
