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00026 #ifndef MLN_WIN_DIAG2D_HH
00027 # define MLN_WIN_DIAG2D_HH
00028
00032
00033 # include <mln/core/internal/classical_window_base.hh>
00034 # include <mln/core/alias/dpoint2d.hh>
00035
00036
00037 namespace mln
00038 {
00039
00040 mln_internal_add_classical_window_trait(diag2d);
00041
00042
00043 namespace win
00044 {
00045
00063 struct diag2d : public internal::classical_window_base< dpoint2d, diag2d >
00064 {
00071 diag2d(unsigned length);
00072
00075 unsigned length() const;
00076
00080 unsigned delta_() const;
00081
00082 void print_(std::ostream& ostr) const;
00083
00084 protected:
00085 unsigned length_;
00086 };
00087
00088
00089
00090 # ifndef MLN_INCLUDE_ONLY
00091
00092 inline
00093 diag2d::diag2d(unsigned length)
00094 : length_(length)
00095 {
00096 mln_precondition(length % 2 == 1);
00097 const def::coord
00098 dcol = static_cast<def::coord>(length) / 2,
00099 minus_dcol = static_cast<def::coord>(-dcol);
00100 for (def::coord col = minus_dcol; col <= dcol; ++col)
00101 insert(dpoint2d(static_cast<def::coord>(-col),
00102 col));
00103 }
00104
00105 inline
00106 unsigned diag2d::length() const
00107 {
00108 return length_;
00109 }
00110
00111 inline
00112 unsigned diag2d::delta_() const
00113 {
00114 return length_ / 2;
00115 }
00116
00117 inline
00118 void diag2d::print_(std::ostream& ostr) const
00119 {
00120 ostr << "[diag 2d: length=" << length_ << ']';
00121 }
00122
00123 # endif // ! MLN_INCLUDE_ONLY
00124
00125 }
00126
00127 }
00128
00129
00130
00131 #endif // ! MLN_WIN_DIAG2D_HH