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src/boost/polygon/rectangle_concept.hpp  view on Meta::CPAN

    return rectangle;
  }

  struct y_r_convolve2 : gtl_yes {};

  // convolve with point
  template <typename rectangle_type, typename point_type>
  typename enable_if< typename gtl_and_3<y_r_convolve2, typename is_mutable_rectangle_concept<typename geometry_concept<rectangle_type>::type>::type,
                                         typename is_point_concept<typename geometry_concept<point_type>::type>::type>::type,
                       rectangle_type>::type &
  convolve(rectangle_type& rectangle, const point_type& convolution_point) {
    typename rectangle_interval_type<rectangle_type>::type ivl = horizontal(rectangle);
    horizontal(rectangle, convolve(ivl, x(convolution_point)));
    ivl = vertical(rectangle);
    vertical(rectangle, convolve(ivl, y(convolution_point)));
    return rectangle;
  }

  struct y_r_deconvolve2 : gtl_yes {};

  // deconvolve with point
  template <typename rectangle_type, typename point_type>
  typename enable_if<
    typename gtl_and_3<y_r_deconvolve2, typename is_mutable_rectangle_concept<typename geometry_concept<rectangle_type>::type>::type,
                      typename is_point_concept<typename geometry_concept<point_type>::type>::type>::type, rectangle_type>::type &
  deconvolve(rectangle_type& rectangle, const point_type& convolution_point) {
    typename rectangle_interval_type<rectangle_type>::type ivl = horizontal(rectangle);
    horizontal(rectangle, deconvolve(ivl, x(convolution_point)));
    ivl = vertical(rectangle);
    vertical(rectangle, deconvolve(ivl, y(convolution_point)));
    return rectangle;
  }

  struct y_r_delta : gtl_yes {};

  // get the magnitude of the interval range depending on orient
  template <typename rectangle_type>
  typename enable_if< typename gtl_and<y_r_delta, typename is_rectangle_concept<typename geometry_concept<rectangle_type>::type>::type>::type,
                       typename rectangle_difference_type<rectangle_type>::type>::type
  delta(const rectangle_type& rectangle, orientation_2d orient) {
    return delta(get(rectangle, orient));
  }

  struct y_r_area : gtl_yes {};

  // get the area of the rectangle
  template <typename rectangle_type>
  typename enable_if< typename gtl_and<y_r_area, typename is_rectangle_concept<typename geometry_concept<rectangle_type>::type>::type>::type,
                       typename coordinate_traits<typename rectangle_coordinate_type<rectangle_type>::type>::manhattan_area_type>::type
  area(const rectangle_type& rectangle) {
    typedef typename coordinate_traits<typename rectangle_coordinate_type<rectangle_type>::type>::manhattan_area_type area_type;
    return (area_type)delta(rectangle, HORIZONTAL) * (area_type)delta(rectangle, VERTICAL);
  }

  struct y_r_go : gtl_yes {};

  // returns the orientation of the longest side
  template <typename rectangle_type>
  typename enable_if<typename gtl_and<y_r_go, typename is_rectangle_concept<typename geometry_concept<rectangle_type>::type>::type>::type,
                      orientation_2d>::type
  guess_orientation(const rectangle_type& rectangle) {
    return delta(rectangle, HORIZONTAL) >= delta(rectangle, VERTICAL) ?
      HORIZONTAL : VERTICAL;
  }

  struct y_r_half_p : gtl_yes {};

  // get the half perimeter of the rectangle
  template <typename rectangle_type>
  typename enable_if< typename gtl_and<y_r_half_p, typename is_rectangle_concept<typename geometry_concept<rectangle_type>::type>::type>::type,
                       typename rectangle_difference_type<rectangle_type>::type>::type
  half_perimeter(const rectangle_type& rectangle) {
    return delta(rectangle, HORIZONTAL) + delta(rectangle, VERTICAL);
  }

  struct y_r_perimeter : gtl_yes {};

  // get the perimeter of the rectangle
  template <typename rectangle_type>
  typename enable_if< typename gtl_and<y_r_perimeter, typename is_rectangle_concept<typename geometry_concept<rectangle_type>::type>::type>::type,
                      typename rectangle_difference_type<rectangle_type>::type>::type
  perimeter(const rectangle_type& rectangle) {
    return 2 * half_perimeter(rectangle);
  }

  struct y_r_intersects : gtl_yes {};

  // check if Rectangle b intersects `this` Rectangle
  //  [in]     b         Rectangle that will be checked
  //  [in]     considerTouch If true, return true even if b touches the boundary
  //  [ret]    .         true if `t` intersects b
  template <typename rectangle_type_1, typename rectangle_type_2>
  typename enable_if<
    typename gtl_and_3<y_r_intersects, typename is_rectangle_concept<typename geometry_concept<rectangle_type_1>::type>::type,
                      typename is_rectangle_concept<typename geometry_concept<rectangle_type_2>::type>::type>::type,
    bool>::type
  intersects(const rectangle_type_1& rectangle, const rectangle_type_2& b, bool consider_touch = true) {
    return intersects(horizontal(rectangle), horizontal(b), consider_touch) &&
      intersects(vertical(rectangle), vertical(b), consider_touch);
  }

  struct y_r_b_intersect : gtl_yes {};

  // Check if boundaries of Rectangle b and `this` Rectangle intersect
  //  [in]     b         Rectangle that will be checked
  //  [in]     considerTouch If true, return true even if p is on the foundary
  //  [ret]    .         true if `t` contains p
  template <typename rectangle_type_1, typename rectangle_type_2>
  typename enable_if<
    typename gtl_and_3<y_r_b_intersect, typename is_rectangle_concept<typename geometry_concept<rectangle_type_1>::type>::type,
                      typename is_rectangle_concept<typename geometry_concept<rectangle_type_2>::type>::type>::type,
    bool>::type
  boundaries_intersect(const rectangle_type_1& rectangle, const rectangle_type_2& b,
                       bool consider_touch = true) {
    return (intersects(rectangle, b, consider_touch) &&
            !(contains(rectangle, b, !consider_touch)) &&
            !(contains(b, rectangle, !consider_touch)));
  }

  struct y_r_b_abuts : gtl_yes {};