mirror of https://github.com/CGAL/cgal
86 lines
2.7 KiB
C++
86 lines
2.7 KiB
C++
// ============================================================================
|
|
//
|
|
// Copyright (c) 1997 The CGAL Consortium
|
|
//
|
|
// This software and related documentation is part of an INTERNAL release
|
|
// of the Computational Geometry Algorithms Library (CGAL). It is not
|
|
// intended for general use.
|
|
//
|
|
// ----------------------------------------------------------------------------
|
|
//
|
|
// release : $CGAL_Revision: $
|
|
// release_date : $CGAL_Date: $
|
|
//
|
|
// file : generators.h
|
|
// chapter : $CGAL_Chapter: Geometric Object Generators $
|
|
// package : $CGAL_Package: Generator 2.12 (28 Jul 1999) $
|
|
// source : generators.fw
|
|
// revision : $Revision$
|
|
// revision_date : $Date$
|
|
// author(s) : Lutz Kettner <kettner@inf.ethz.ch>
|
|
//
|
|
// coordinator : INRIA, Sophia Antipolis
|
|
//
|
|
// General Generator Support
|
|
// ============================================================================
|
|
|
|
#ifndef CGAL_GENERATORS_H
|
|
#define CGAL_GENERATORS_H 1
|
|
|
|
#include <CGAL/basic.h>
|
|
#include <cstddef>
|
|
#include <cmath>
|
|
#include <iterator>
|
|
#include <algorithm>
|
|
#include <CGAL/function_objects.h>
|
|
#include <CGAL/Random.h>
|
|
|
|
CGAL_BEGIN_NAMESPACE
|
|
template < class T >
|
|
class Generator_base {
|
|
protected:
|
|
T d_item;
|
|
double d_range;
|
|
public:
|
|
typedef std::input_iterator_tag iterator_category;
|
|
typedef T value_type;
|
|
typedef std::ptrdiff_t difference_type;
|
|
typedef const T* pointer;
|
|
typedef const T& reference;
|
|
typedef Generator_base<T> This;
|
|
|
|
Generator_base() {}
|
|
Generator_base( double range) : d_range( range) {}
|
|
Generator_base( const T& item, double range)
|
|
: d_item(item), d_range(range) {}
|
|
|
|
bool operator==( const This& base) const {
|
|
return ( d_item == base.d_item);
|
|
}
|
|
bool operator!=( const This& base) const { return ! operator==(base);}
|
|
double range() const { return d_range; }
|
|
reference operator*() const { return d_item; }
|
|
pointer operator->() const { return & operator*(); }
|
|
};
|
|
|
|
template < class T >
|
|
class Random_generator_base : public Generator_base<T> {
|
|
protected:
|
|
Random& _rnd;
|
|
public:
|
|
typedef Random_generator_base<T> This;
|
|
|
|
Random_generator_base() : _rnd( default_random) {}
|
|
Random_generator_base( double range, Random& rnd)
|
|
: Generator_base<T>( range), _rnd( rnd) {}
|
|
Random_generator_base( const T& item, double range, Random& rnd)
|
|
: Generator_base<T>( item, range), _rnd( rnd) {}
|
|
bool operator==( const This& rb) const {
|
|
return ( _rnd == rb._rnd && Generator_base<T>::operator==(rb));
|
|
}
|
|
bool operator!=( const This& rb) const { return ! operator==(rb); }
|
|
};
|
|
CGAL_END_NAMESPACE
|
|
#endif // CGAL_GENERATORS_H //
|
|
// EOF //
|