70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
|
/*
|
||
|
|
Copyright 2008 Intel Corporation
|
||
|
|
|
||
|
|
Use, modification and distribution are subject to the Boost Software License,
|
||
|
|
Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
|
||
|
|
http://www.boost.org/LICENSE_1_0.txt).
|
||
|
|
*/
|
||
|
|
#ifndef BOOST_POLYGON_ITERATOR_COMPACT_TO_POINTS_HPP
|
||
|
|
#define BOOST_POLYGON_ITERATOR_COMPACT_TO_POINTS_HPP
|
||
|
|
namespace boost { namespace polygon{
|
||
|
|
template <typename iterator_type, typename point_type>
|
||
|
|
class iterator_compact_to_points {
|
||
|
|
private:
|
||
|
|
iterator_type iter_;
|
||
|
|
iterator_type iter_end_;
|
||
|
|
point_type pt_;
|
||
|
|
typename point_traits<point_type>::coordinate_type firstX_;
|
||
|
|
orientation_2d orient_;
|
||
|
|
public:
|
||
|
|
typedef std::forward_iterator_tag iterator_category;
|
||
|
|
typedef point_type value_type;
|
||
|
|
typedef std::ptrdiff_t difference_type;
|
||
|
|
typedef const point_type* pointer; //immutable
|
||
|
|
typedef const point_type& reference; //immutable
|
||
|
|
|
||
|
|
inline iterator_compact_to_points() : iter_(), iter_end_(), pt_(), firstX_(), orient_() {}
|
||
|
|
inline iterator_compact_to_points(iterator_type iter, iterator_type iter_end) :
|
||
|
|
iter_(iter), iter_end_(iter_end), pt_(), firstX_(), orient_(HORIZONTAL) {
|
||
|
|
if(iter_ != iter_end_) {
|
||
|
|
firstX_ = *iter_;
|
||
|
|
x(pt_, firstX_);
|
||
|
|
++iter_;
|
||
|
|
if(iter_ != iter_end_) {
|
||
|
|
y(pt_, *iter_);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//use bitwise copy and assign provided by the compiler
|
||
|
|
inline iterator_compact_to_points& operator++() {
|
||
|
|
iterator_type prev_iter = iter_;
|
||
|
|
++iter_;
|
||
|
|
if(iter_ == iter_end_) {
|
||
|
|
if(x(pt_) != firstX_) {
|
||
|
|
iter_ = prev_iter;
|
||
|
|
x(pt_, firstX_);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
set(pt_, orient_, *iter_);
|
||
|
|
orient_.turn_90();
|
||
|
|
}
|
||
|
|
return *this;
|
||
|
|
}
|
||
|
|
inline const iterator_compact_to_points operator++(int) {
|
||
|
|
iterator_compact_to_points tmp(*this);
|
||
|
|
++(*this);
|
||
|
|
return tmp;
|
||
|
|
}
|
||
|
|
inline bool operator==(const iterator_compact_to_points& that) const {
|
||
|
|
return (iter_ == that.iter_);
|
||
|
|
}
|
||
|
|
inline bool operator!=(const iterator_compact_to_points& that) const {
|
||
|
|
return (iter_ != that.iter_);
|
||
|
|
}
|
||
|
|
inline reference operator*() const { return pt_; }
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|