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/*
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
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