/* | |
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_POINT_CONCEPT_HPP | |
#define BOOST_POLYGON_POINT_CONCEPT_HPP | |
#include "isotropy.hpp" | |
#include "point_data.hpp" | |
#include "point_traits.hpp" | |
namespace boost { namespace polygon{ | |
struct point_concept {}; | |
template <typename T> | |
struct is_point_concept { typedef gtl_no type; }; | |
template <> | |
struct is_point_concept<point_concept> { typedef gtl_yes type; }; | |
struct point_3d_concept; | |
template <> | |
struct is_point_concept<point_3d_concept> { typedef gtl_yes type; }; | |
template <typename T> | |
struct is_mutable_point_concept { typedef gtl_no type; }; | |
template <> | |
struct is_mutable_point_concept<point_concept> { typedef gtl_yes type; }; | |
template <typename T, typename CT> | |
struct point_coordinate_type_by_concept { typedef void type; }; | |
template <typename T> | |
struct point_coordinate_type_by_concept<T, gtl_yes> { typedef typename point_traits<T>::coordinate_type type; }; | |
template <typename T> | |
struct point_coordinate_type { | |
typedef typename point_coordinate_type_by_concept<T, typename is_point_concept<typename geometry_concept<T>::type>::type>::type type; | |
}; | |
template <typename T, typename CT> | |
struct point_difference_type_by_concept { typedef void type; }; | |
template <typename T> | |
struct point_difference_type_by_concept<T, gtl_yes> { | |
typedef typename coordinate_traits<typename point_traits<T>::coordinate_type>::coordinate_difference type; }; | |
template <typename T> | |
struct point_difference_type { | |
typedef typename point_difference_type_by_concept< | |
T, typename is_point_concept<typename geometry_concept<T>::type>::type>::type type; | |
}; | |
template <typename T, typename CT> | |
struct point_distance_type_by_concept { typedef void type; }; | |
template <typename T> | |
struct point_distance_type_by_concept<T, gtl_yes> { | |
typedef typename coordinate_traits<typename point_traits<T>::coordinate_type>::coordinate_distance type; }; | |
template <typename T> | |
struct point_distance_type { | |
typedef typename point_distance_type_by_concept< | |
T, typename is_point_concept<typename geometry_concept<T>::type>::type>::type type; | |
}; | |
template <typename T> | |
typename point_coordinate_type<T>::type | |
get(const T& point, orientation_2d orient, | |
typename enable_if< typename gtl_if<typename is_point_concept<typename geometry_concept<T>::type>::type>::type>::type * = 0 | |
) { | |
return point_traits<T>::get(point, orient); | |
} | |
template <typename T, typename coordinate_type> | |
void | |
set(T& point, orientation_2d orient, coordinate_type value, | |
typename enable_if<typename is_mutable_point_concept<typename geometry_concept<T>::type>::type>::type * = 0 | |
) { | |
point_mutable_traits<T>::set(point, orient, value); | |
} | |
template <typename T, typename coordinate_type1, typename coordinate_type2> | |
T | |
construct(coordinate_type1 x_value, coordinate_type2 y_value, | |
typename enable_if<typename is_mutable_point_concept<typename geometry_concept<T>::type>::type>::type * = 0 | |
) { | |
return point_mutable_traits<T>::construct(x_value, y_value); | |
} | |
template <typename T1, typename T2> | |
T1& | |
assign(T1& lvalue, const T2& rvalue, | |
typename enable_if< typename gtl_and< typename is_mutable_point_concept<typename geometry_concept<T1>::type>::type, | |
typename is_point_concept<typename geometry_concept<T2>::type>::type>::type>::type * = 0 | |
) { | |
set(lvalue, HORIZONTAL, get(rvalue, HORIZONTAL)); | |
set(lvalue, VERTICAL, get(rvalue, VERTICAL)); | |
return lvalue; | |
} | |
struct y_p_x : gtl_yes {}; | |
template <typename point_type> | |
typename enable_if< typename gtl_and<y_p_x, typename is_point_concept<typename geometry_concept<point_type>::type>::type>::type, | |
typename point_traits<point_type>::coordinate_type >::type | |
x(const point_type& point) { | |
return get(point, HORIZONTAL); | |
} | |
struct y_p_y : gtl_yes {}; | |
template <typename point_type> | |
typename enable_if< typename gtl_and<y_p_y, typename is_point_concept<typename geometry_concept<point_type>::type>::type>::type, | |
typename point_traits<point_type>::coordinate_type >::type | |
y(const point_type& point) { | |
return get(point, VERTICAL); | |
} | |
struct y_p_sx : gtl_yes {}; | |
template <typename point_type, typename coordinate_type> | |
typename enable_if<typename gtl_and<y_p_sx, typename is_mutable_point_concept<typename geometry_concept<point_type>::type>::type>::type, | |
void>::type | |
x(point_type& point, coordinate_type value) { | |
set(point, HORIZONTAL, value); | |
} | |
struct y_p_sy : gtl_yes {}; | |
template <typename point_type, typename coordinate_type> | |
typename enable_if<typename gtl_and<y_p_sy, typename is_mutable_point_concept<typename geometry_concept<point_type>::type>::type>::type, | |
void>::type | |
y(point_type& point, coordinate_type value) { | |
set(point, VERTICAL, value); | |
} | |
template <typename T, typename T2> | |
bool | |
equivalence(const T& point1, const T2& point2, | |
typename enable_if< typename gtl_and<typename gtl_same_type<point_concept, typename geometry_concept<T>::type>::type, | |
typename is_point_concept<typename geometry_concept<T2>::type>::type>::type>::type * = 0 | |
) { | |
typename point_traits<T>::coordinate_type x1 = x(point1); | |
typename point_traits<T2>::coordinate_type x2 = get(point2, HORIZONTAL); | |
typename point_traits<T>::coordinate_type y1 = get(point1, VERTICAL); | |
typename point_traits<T2>::coordinate_type y2 = y(point2); | |
return x1 == x2 && y1 == y2; | |
} | |
template <typename point_type_1, typename point_type_2> | |
typename point_difference_type<point_type_1>::type | |
manhattan_distance(const point_type_1& point1, const point_type_2& point2, | |
typename enable_if< typename gtl_and<typename gtl_same_type<point_concept, typename geometry_concept<point_type_1>::type>::type, | |
typename is_point_concept<typename geometry_concept<point_type_2>::type>::type>::type>::type * = 0) { | |
return euclidean_distance(point1, point2, HORIZONTAL) + euclidean_distance(point1, point2, VERTICAL); | |
} | |
struct y_i_ed1 : gtl_yes {}; | |
template <typename point_type_1, typename point_type_2> | |
typename enable_if< typename gtl_and_3<y_i_ed1, typename is_point_concept<typename geometry_concept<point_type_1>::type>::type, | |
typename is_point_concept<typename geometry_concept<point_type_2>::type>::type>::type, | |
typename point_difference_type<point_type_1>::type>::type | |
euclidean_distance(const point_type_1& point1, const point_type_2& point2, orientation_2d orient) { | |
typename coordinate_traits<typename point_traits<point_type_1>::coordinate_type>::coordinate_difference return_value = | |
get(point1, orient) - get(point2, orient); | |
return return_value < 0 ? (typename coordinate_traits<typename point_traits<point_type_1>::coordinate_type>::coordinate_difference)-return_value : return_value; | |
} | |
struct y_i_ed2 : gtl_yes {}; | |
template <typename point_type_1, typename point_type_2> | |
typename enable_if< typename gtl_and_3<y_i_ed2, typename gtl_same_type<point_concept, typename geometry_concept<point_type_1>::type>::type, | |
typename gtl_same_type<point_concept, typename geometry_concept<point_type_2>::type>::type>::type, | |
typename point_distance_type<point_type_1>::type>::type | |
euclidean_distance(const point_type_1& point1, const point_type_2& point2) { | |
typedef typename point_traits<point_type_1>::coordinate_type Unit; | |
return sqrt((double)(distance_squared(point1, point2))); | |
} | |
template <typename point_type_1, typename point_type_2> | |
typename point_difference_type<point_type_1>::type | |
distance_squared(const point_type_1& point1, const point_type_2& point2, | |
typename enable_if< typename gtl_and<typename is_point_concept<typename geometry_concept<point_type_1>::type>::type, | |
typename is_point_concept<typename geometry_concept<point_type_2>::type>::type>::type>::type * = 0 | |
) { | |
typedef typename point_traits<point_type_1>::coordinate_type Unit; | |
typename coordinate_traits<Unit>::coordinate_difference dx = euclidean_distance(point1, point2, HORIZONTAL); | |
typename coordinate_traits<Unit>::coordinate_difference dy = euclidean_distance(point1, point2, VERTICAL); | |
dx *= dx; | |
dy *= dy; | |
return dx + dy; | |
} | |
template <typename point_type_1, typename point_type_2> | |
point_type_1 & | |
convolve(point_type_1& lvalue, const point_type_2& rvalue, | |
typename enable_if< typename gtl_and<typename is_mutable_point_concept<typename geometry_concept<point_type_1>::type>::type, | |
typename is_point_concept<typename geometry_concept<point_type_2>::type>::type>::type>::type * = 0 | |
) { | |
x(lvalue, x(lvalue) + x(rvalue)); | |
y(lvalue, y(lvalue) + y(rvalue)); | |
return lvalue; | |
} | |
template <typename point_type_1, typename point_type_2> | |
point_type_1 & | |
deconvolve(point_type_1& lvalue, const point_type_2& rvalue, | |
typename enable_if< typename gtl_and<typename is_mutable_point_concept<typename geometry_concept<point_type_1>::type>::type, | |
typename is_point_concept<typename geometry_concept<point_type_2>::type>::type>::type>::type * = 0 | |
) { | |
x(lvalue, x(lvalue) - x(rvalue)); | |
y(lvalue, y(lvalue) - y(rvalue)); | |
return lvalue; | |
} | |
template <typename point_type, typename coord_type> | |
point_type & | |
scale_up(point_type& point, coord_type factor, | |
typename enable_if<typename is_mutable_point_concept<typename geometry_concept<point_type>::type>::type>::type * = 0 | |
) { | |
typedef typename point_traits<point_type>::coordinate_type Unit; | |
x(point, x(point) * (Unit)factor); | |
y(point, y(point) * (Unit)factor); | |
return point; | |
} | |
template <typename point_type, typename coord_type> | |
point_type & | |
scale_down(point_type& point, coord_type factor, | |
typename enable_if<typename is_mutable_point_concept<typename geometry_concept<point_type>::type>::type>::type * = 0 | |
) { | |
typedef typename point_traits<point_type>::coordinate_type Unit; | |
typedef typename coordinate_traits<Unit>::coordinate_distance dt; | |
x(point, scaling_policy<Unit>::round((dt)((dt)(x(point)) / (dt)factor))); | |
y(point, scaling_policy<Unit>::round((dt)((dt)(y(point)) / (dt)factor))); | |
return point; | |
} | |
template <typename point_type, typename scaling_type> | |
point_type & | |
scale(point_type& point, | |
const scaling_type& scaling, | |
typename enable_if<typename is_mutable_point_concept<typename geometry_concept<point_type>::type>::type>::type * = 0 | |
) { | |
typedef typename point_traits<point_type>::coordinate_type Unit; | |
Unit x_(x(point)), y_(y(point)); | |
scaling.scale(x_, y_); | |
x(point, x_); | |
y(point, y_); | |
return point; | |
} | |
template <typename point_type, typename transformation_type> | |
point_type & | |
transform(point_type& point, const transformation_type& transformation, | |
typename enable_if<typename is_mutable_point_concept<typename geometry_concept<point_type>::type>::type>::type * = 0 | |
) { | |
typedef typename point_traits<point_type>::coordinate_type Unit; | |
Unit x_(x(point)), y_(y(point)); | |
transformation.transform(x_, y_); | |
x(point, x_); | |
y(point, y_); | |
return point; | |
} | |
struct y_pt_move : gtl_yes {}; | |
template <typename point_type> | |
typename enable_if< | |
typename gtl_and< y_pt_move, | |
typename is_mutable_point_concept< | |
typename geometry_concept<point_type>::type>::type>::type, | |
point_type>::type & | |
move(point_type& point, orientation_2d orient, | |
typename point_traits<point_type>::coordinate_type displacement, | |
typename enable_if<typename is_mutable_point_concept<typename geometry_concept<point_type>::type>::type>::type * = 0 | |
) { | |
typedef typename point_traits<point_type>::coordinate_type Unit; | |
Unit v(get(point, orient)); | |
set(point, orient, v + displacement); | |
return point; | |
} | |
template <class T> | |
template <class T2> | |
point_data<T>& point_data<T>::operator=(const T2& rvalue) { | |
assign(*this, rvalue); | |
return *this; | |
} | |
template <typename T> | |
struct geometry_concept<point_data<T> > { | |
typedef point_concept type; | |
}; | |
} | |
} | |
#endif | |