kicad/include/boost/polygon/interval_concept.hpp

593 lines
26 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_INTERVAL_CONCEPT_HPP
#define BOOST_POLYGON_INTERVAL_CONCEPT_HPP
#include "isotropy.hpp"
#include "interval_data.hpp"
#include "interval_traits.hpp"
namespace boost { namespace polygon{
struct interval_concept {};
template <typename T>
struct is_interval_concept { typedef gtl_no type; };
template <>
struct is_interval_concept<interval_concept> { typedef gtl_yes type; };
template <typename T>
struct is_mutable_interval_concept { typedef gtl_no type; };
template <>
struct is_mutable_interval_concept<interval_concept> { typedef gtl_yes type; };
template <typename T, typename CT>
struct interval_coordinate_type_by_concept { typedef void type; };
template <typename T>
struct interval_coordinate_type_by_concept<T, gtl_yes> { typedef typename interval_traits<T>::coordinate_type type; };
template <typename T>
struct interval_coordinate_type {
typedef typename interval_coordinate_type_by_concept<
T, typename is_interval_concept<typename geometry_concept<T>::type>::type>::type type;
};
template <typename T, typename CT>
struct interval_difference_type_by_concept { typedef void type; };
template <typename T>
struct interval_difference_type_by_concept<T, gtl_yes> {
typedef typename coordinate_traits<typename interval_traits<T>::coordinate_type>::coordinate_difference type; };
template <typename T>
struct interval_difference_type {
typedef typename interval_difference_type_by_concept<
T, typename is_interval_concept<typename geometry_concept<T>::type>::type>::type type;
};
template <typename T>
typename interval_coordinate_type<T>::type
get(const T& interval, direction_1d dir,
typename enable_if<typename gtl_if<typename is_interval_concept<typename geometry_concept<T>::type>::type>::type>::type * = 0
) {
return interval_traits<T>::get(interval, dir);
}
template <typename T, typename coordinate_type>
void
set(T& interval, direction_1d dir, coordinate_type value,
typename enable_if<typename is_mutable_interval_concept<typename geometry_concept<T>::type>::type>::type * = 0
) {
//this may need to be refined
interval_mutable_traits<T>::set(interval, dir, value);
if(high(interval) < low(interval))
interval_mutable_traits<T>::set(interval, dir.backward(), value);
}
template <typename T, typename T2, typename T3>
T
construct(T2 low_value, T3 high_value,
typename enable_if<typename is_mutable_interval_concept<typename geometry_concept<T>::type>::type>::type * = 0
) {
if(low_value > high_value) std::swap(low_value, high_value);
return interval_mutable_traits<T>::construct(low_value, high_value);
}
template <typename T, typename T2>
T
copy_construct(const T2& interval,
typename enable_if< typename gtl_and<typename is_mutable_interval_concept<typename geometry_concept<T>::type>::type,
typename is_interval_concept<typename geometry_concept<T2>::type>::type>::type>::type * = 0
) {
return construct<T>
(get(interval, LOW ),
get(interval, HIGH));
}
template <typename T1, typename T2>
T1 &
assign(T1& lvalue, const T2& rvalue,
typename enable_if< typename gtl_and< typename is_mutable_interval_concept<typename geometry_concept<T1>::type>::type,
typename is_interval_concept<typename geometry_concept<T2>::type>::type>::type>::type * = 0) {
lvalue = copy_construct<T1>(rvalue);
return lvalue;
}
template <typename T, typename T2>
bool
equivalence(const T& interval1, const T2& interval2,
typename enable_if< typename gtl_and< typename is_interval_concept<typename geometry_concept<T>::type>::type,
typename is_interval_concept<typename geometry_concept<T2>::type>::type>::type>::type * = 0
) {
return get(interval1, LOW) ==
get(interval2, LOW) &&
get(interval1, HIGH) ==
get(interval2, HIGH);
}
struct y_i_contains : gtl_yes {};
template <typename interval_type>
typename enable_if< typename gtl_and< y_i_contains, typename is_interval_concept<typename geometry_concept<interval_type>::type>::type >::type, bool>::type
contains(const interval_type& interval,
typename interval_traits<interval_type>::coordinate_type value,
bool consider_touch = true ) {
if(consider_touch) {
return value <= high(interval) && value >= low(interval);
} else {
return value < high(interval) && value > low(interval);
}
}
template <typename interval_type, typename interval_type_2>
bool
contains(const interval_type& interval,
const interval_type_2& value, bool consider_touch = true,
typename enable_if< typename gtl_and< typename is_interval_concept<typename geometry_concept<interval_type>::type>::type,
typename is_interval_concept<typename geometry_concept<interval_type_2>::type>::type>::type>::type * = 0
) {
return contains(interval, get(value, LOW), consider_touch) &&
contains(interval, get(value, HIGH), consider_touch);
}
// get the low coordinate
template <typename interval_type>
typename interval_traits<interval_type>::coordinate_type
low(const interval_type& interval,
typename enable_if< typename is_interval_concept<typename geometry_concept<interval_type>::type>::type>::type * = 0
) { return get(interval, LOW); }
// get the high coordinate
template <typename interval_type>
typename interval_traits<interval_type>::coordinate_type
high(const interval_type& interval,
typename enable_if< typename is_interval_concept<typename geometry_concept<interval_type>::type>::type>::type * = 0
) { return get(interval, HIGH); }
// get the center coordinate
template <typename interval_type>
typename interval_traits<interval_type>::coordinate_type
center(const interval_type& interval,
typename enable_if< typename is_interval_concept<typename geometry_concept<interval_type>::type>::type>::type * = 0
) { return (high(interval) + low(interval))/2; }
struct y_i_low : gtl_yes {};
// set the low coordinate to v
template <typename interval_type>
typename enable_if<typename gtl_and<y_i_low, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type>::type, void>::type
low(interval_type& interval,
typename interval_traits<interval_type>::coordinate_type v) { set(interval, LOW, v); }
struct y_i_high : gtl_yes {};
// set the high coordinate to v
template <typename interval_type>
typename enable_if<typename gtl_and<y_i_high, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type>::type, void>::type
high(interval_type& interval,
typename interval_traits<interval_type>::coordinate_type v) { set(interval, HIGH, v); }
// get the magnitude of the interval
template <typename interval_type>
typename interval_difference_type<interval_type>::type
delta(const interval_type& interval,
typename enable_if< typename is_interval_concept<typename geometry_concept<interval_type>::type>::type>::type * = 0
) {
typedef typename coordinate_traits<typename interval_traits<interval_type>::coordinate_type>::coordinate_difference diffT;
return (diffT)high(interval) - (diffT)low(interval); }
struct y_i_flip : gtl_yes {};
// flip this about coordinate
template <typename interval_type>
typename enable_if<typename gtl_and<y_i_flip, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type>::type, interval_type>::type &
flip(interval_type& interval,
typename interval_traits<interval_type>::coordinate_type axis = 0) {
typename interval_traits<interval_type>::coordinate_type newLow, newHigh;
newLow = 2 * axis - high(interval);
newHigh = 2 * axis - low(interval);
low(interval, newLow);
high(interval, newHigh);
return interval;
}
struct y_i_scale_up : gtl_yes {};
// scale interval by factor
template <typename interval_type>
typename enable_if<typename gtl_and<y_i_scale_up, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type>::type, interval_type>::type &
scale_up(interval_type& interval,
typename coordinate_traits<typename interval_traits<interval_type>::coordinate_type>::unsigned_area_type factor) {
typedef typename interval_traits<interval_type>::coordinate_type Unit;
Unit newHigh = high(interval) * (Unit)factor;
low(interval, low(interval) * (Unit)factor);
high(interval, (newHigh));
return interval;
}
struct y_i_scale_down : gtl_yes {};
template <typename interval_type>
typename enable_if<typename gtl_and<y_i_scale_down, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type>::type, interval_type>::type &
scale_down(interval_type& interval,
typename coordinate_traits<typename interval_traits<interval_type>::coordinate_type>::unsigned_area_type factor) {
typedef typename interval_traits<interval_type>::coordinate_type Unit;
typedef typename coordinate_traits<Unit>::coordinate_distance dt;
Unit newHigh = scaling_policy<Unit>::round((dt)(high(interval)) / (dt)factor);
low(interval, scaling_policy<Unit>::round((dt)(low(interval)) / (dt)factor));
high(interval, (newHigh));
return interval;
}
struct y_i_scale : gtl_yes {};
template <typename interval_type>
typename enable_if<typename gtl_and<y_i_scale, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type>::type, interval_type>::type &
scale(interval_type& interval, double factor) {
typedef typename interval_traits<interval_type>::coordinate_type Unit;
Unit newHigh = scaling_policy<Unit>::round((double)(high(interval)) * factor);
low(interval, scaling_policy<Unit>::round((double)low(interval)* factor));
high(interval, (newHigh));
return interval;
}
// move interval by delta
template <typename interval_type>
interval_type&
move(interval_type& interval,
typename interval_difference_type<interval_type>::type displacement,
typename enable_if<typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type>::type * = 0
) {
typedef typename interval_traits<interval_type>::coordinate_type ctype;
typedef typename coordinate_traits<ctype>::coordinate_difference Unit;
Unit len = delta(interval);
low(interval, static_cast<ctype>(static_cast<Unit>(low(interval)) + displacement));
high(interval, static_cast<ctype>(static_cast<Unit>(low(interval)) + len));
return interval;
}
struct y_i_convolve : gtl_yes {};
// convolve this with b
template <typename interval_type>
typename enable_if<typename gtl_and<y_i_convolve, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type>::type, interval_type>::type &
convolve(interval_type& interval,
typename interval_traits<interval_type>::coordinate_type b) {
typedef typename interval_traits<interval_type>::coordinate_type Unit;
Unit newLow = low(interval) + b;
Unit newHigh = high(interval) + b;
low(interval, newLow);
high(interval, newHigh);
return interval;
}
struct y_i_deconvolve : gtl_yes {};
// deconvolve this with b
template <typename interval_type>
typename enable_if<typename gtl_and<y_i_deconvolve, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type>::type, interval_type>::type &
deconvolve(interval_type& interval,
typename interval_traits<interval_type>::coordinate_type b) {
typedef typename interval_traits<interval_type>::coordinate_type Unit;
Unit newLow = low(interval) - b;
Unit newHigh = high(interval) - b;
low(interval, newLow);
high(interval, newHigh);
return interval;
}
struct y_i_convolve2 : gtl_yes {};
// convolve this with b
template <typename interval_type, typename interval_type_2>
typename enable_if<
typename gtl_and_3<y_i_convolve2,
typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type,
typename is_interval_concept<typename geometry_concept<interval_type_2>::type>::type>::type,
interval_type>::type &
convolve(interval_type& interval,
const interval_type_2& b) {
typedef typename interval_traits<interval_type>::coordinate_type Unit;
Unit newLow = low(interval) + low(b);
Unit newHigh = high(interval) + high(b);
low(interval, newLow);
high(interval, newHigh);
return interval;
}
struct y_i_deconvolve2 : gtl_yes {};
// deconvolve this with b
template <typename interval_type, typename interval_type_2>
typename enable_if<
typename gtl_and_3< y_i_deconvolve2,
typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type,
typename is_interval_concept<typename geometry_concept<interval_type_2>::type>::type>::type,
interval_type>::type &
deconvolve(interval_type& interval,
const interval_type_2& b) {
typedef typename interval_traits<interval_type>::coordinate_type Unit;
Unit newLow = low(interval) - low(b);
Unit newHigh = high(interval) - high(b);
low(interval, newLow);
high(interval, newHigh);
return interval;
}
struct y_i_reconvolve : gtl_yes {};
// reflected convolve this with b
template <typename interval_type, typename interval_type_2>
typename enable_if<
typename gtl_and_3<y_i_reconvolve,
typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type,
typename is_interval_concept<typename geometry_concept<interval_type_2>::type>::type>::type,
interval_type>::type &
reflected_convolve(interval_type& interval,
const interval_type_2& b) {
typedef typename interval_traits<interval_type>::coordinate_type Unit;
Unit newLow = low(interval) - high(b);
Unit newHigh = high(interval) - low(b);
low(interval, newLow);
high(interval, newHigh);
return interval;
}
struct y_i_redeconvolve : gtl_yes {};
// reflected deconvolve this with b
template <typename interval_type, typename interval_type_2>
typename enable_if<
typename gtl_and_3< y_i_redeconvolve,
typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type,
typename is_interval_concept<typename geometry_concept<interval_type_2>::type>::type>::type,
interval_type>::type &
reflected_deconvolve(interval_type& interval,
const interval_type_2& b) {
typedef typename interval_traits<interval_type>::coordinate_type Unit;
Unit newLow = low(interval) + high(b);
Unit newHigh = high(interval) + low(b);
low(interval, newLow);
high(interval, newHigh);
return interval;
}
struct y_i_e_dist1 : gtl_yes {};
// distance from a coordinate to an interval
template <typename interval_type>
typename enable_if< typename gtl_and<y_i_e_dist1, typename is_interval_concept<typename geometry_concept<interval_type>::type>::type>::type,
typename interval_difference_type<interval_type>::type>::type
euclidean_distance(const interval_type& interval,
typename interval_traits<interval_type>::coordinate_type position) {
typedef typename coordinate_traits<typename interval_traits<interval_type>::coordinate_type>::coordinate_difference Unit;
Unit dist[3] = {0, (Unit)low(interval) - (Unit)position, (Unit)position - (Unit)high(interval)};
return dist[ (dist[1] > 0) + ((dist[2] > 0) << 1) ];
}
struct y_i_e_dist2 : gtl_yes {};
// distance between two intervals
template <typename interval_type, typename interval_type_2>
typename enable_if<
typename gtl_and_3<y_i_e_dist2, typename is_interval_concept<typename geometry_concept<interval_type>::type>::type,
typename is_interval_concept<typename geometry_concept<interval_type_2>::type>::type>::type,
typename interval_difference_type<interval_type>::type>::type
euclidean_distance(const interval_type& interval,
const interval_type_2& b) {
typedef typename coordinate_traits<typename interval_traits<interval_type>::coordinate_type>::coordinate_difference Unit;
Unit dist[3] = {0, (Unit)low(interval) - (Unit)high(b), (Unit)low(b) - (Unit)high(interval)};
return dist[ (dist[1] > 0) + ((dist[2] > 0) << 1) ];
}
struct y_i_e_intersects : gtl_yes {};
// check if Interval b intersects `this` Interval
template <typename interval_type, typename interval_type_2>
typename enable_if<
typename gtl_and_3<y_i_e_intersects, typename is_interval_concept<typename geometry_concept<interval_type>::type>::type,
typename is_interval_concept<typename geometry_concept<interval_type_2>::type>::type>::type,
bool>::type
intersects(const interval_type& interval, const interval_type_2& b,
bool consider_touch = true) {
return consider_touch ?
(low(interval) <= high(b)) & (high(interval) >= low(b)) :
(low(interval) < high(b)) & (high(interval) > low(b));
}
struct y_i_e_bintersect : gtl_yes {};
// check if Interval b partially overlaps `this` Interval
template <typename interval_type, typename interval_type_2>
typename enable_if<
typename gtl_and_3<y_i_e_bintersect, typename is_interval_concept<typename geometry_concept<interval_type>::type>::type,
typename is_interval_concept<typename geometry_concept<interval_type_2>::type>::type>::type,
bool>::type
boundaries_intersect(const interval_type& interval, const interval_type_2& b,
bool consider_touch = true) {
return (contains(interval, low(b), consider_touch) ||
contains(interval, high(b), consider_touch)) &&
(contains(b, low(interval), consider_touch) ||
contains(b, high(interval), consider_touch));
}
struct y_i_abuts1 : gtl_yes {};
// check if they are end to end
template <typename interval_type, typename interval_type_2>
typename enable_if< typename gtl_and_3<y_i_abuts1, typename is_interval_concept<typename geometry_concept<interval_type>::type>::type,
typename is_interval_concept<typename geometry_concept<interval_type_2>::type>::type>::type,
bool>::type
abuts(const interval_type& interval, const interval_type_2& b, direction_1d dir) {
return dir.to_int() ? low(b) == high(interval) : low(interval) == high(b);
}
struct y_i_abuts2 : gtl_yes {};
// check if they are end to end
template <typename interval_type, typename interval_type_2>
typename enable_if<
typename gtl_and_3<y_i_abuts2, typename is_interval_concept<typename geometry_concept<interval_type>::type>::type,
typename is_interval_concept<typename geometry_concept<interval_type_2>::type>::type>::type,
bool>::type
abuts(const interval_type& interval, const interval_type_2& b) {
return abuts(interval, b, HIGH) || abuts(interval, b, LOW);
}
struct y_i_intersect : gtl_yes {};
// set 'this' interval to the intersection of 'this' and b
template <typename interval_type, typename interval_type_2>
typename enable_if< typename gtl_and_3<y_i_intersect, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type,
typename is_interval_concept<typename geometry_concept<interval_type_2>::type>::type>::type,
bool>::type
intersect(interval_type& interval, const interval_type_2& b, bool consider_touch = true) {
typedef typename interval_traits<interval_type>::coordinate_type Unit;
Unit lowVal = (std::max)(low(interval), low(b));
Unit highVal = (std::min)(high(interval), high(b));
bool valid = consider_touch ?
lowVal <= highVal :
lowVal < highVal;
if(valid) {
low(interval, lowVal);
high(interval, highVal);
}
return valid;
}
struct y_i_g_intersect : gtl_yes {};
// set 'this' interval to the generalized intersection of 'this' and b
template <typename interval_type, typename interval_type_2>
typename enable_if<
typename gtl_and_3<y_i_g_intersect, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type,
typename is_interval_concept<typename geometry_concept<interval_type_2>::type>::type>::type,
interval_type>::type &
generalized_intersect(interval_type& interval, const interval_type_2& b) {
typedef typename interval_traits<interval_type>::coordinate_type Unit;
Unit coords[4] = {low(interval), high(interval), low(b), high(b)};
//consider implementing faster sorting of small fixed length range
gtlsort(coords, coords+4);
low(interval, coords[1]);
high(interval, coords[2]);
return interval;
}
struct y_i_bloat : gtl_yes {};
// bloat the Interval
template <typename interval_type>
typename enable_if< typename gtl_and<y_i_bloat, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type>::type,
interval_type>::type &
bloat(interval_type& interval, typename interval_traits<interval_type>::coordinate_type bloating) {
low(interval, low(interval)-bloating);
high(interval, high(interval)+bloating);
return interval;
}
struct y_i_bloat2 : gtl_yes {};
// bloat the specified side of `this` Interval
template <typename interval_type>
typename enable_if< typename gtl_and<y_i_bloat2, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type>::type,
interval_type>::type &
bloat(interval_type& interval, direction_1d dir, typename interval_traits<interval_type>::coordinate_type bloating) {
set(interval, dir, get(interval, dir) + dir.get_sign() * bloating);
return interval;
}
struct y_i_shrink : gtl_yes {};
// shrink the Interval
template <typename interval_type>
typename enable_if< typename gtl_and<y_i_shrink, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type>::type,
interval_type>::type &
shrink(interval_type& interval, typename interval_traits<interval_type>::coordinate_type shrinking) {
return bloat(interval, -shrinking);
}
struct y_i_shrink2 : gtl_yes {};
// shrink the specified side of `this` Interval
template <typename interval_type>
typename enable_if< typename gtl_and<y_i_shrink2, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type>::type,
interval_type>::type &
shrink(interval_type& interval, direction_1d dir, typename interval_traits<interval_type>::coordinate_type shrinking) {
return bloat(interval, dir, -shrinking);
}
// Enlarge `this` Interval to encompass the specified Interval
template <typename interval_type, typename interval_type_2>
bool
encompass(interval_type& interval, const interval_type_2& b,
typename enable_if<
typename gtl_and< typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type,
typename is_interval_concept<typename geometry_concept<interval_type_2>::type>::type>::type>::type * = 0
) {
bool retval = !contains(interval, b, true);
low(interval, (std::min)(low(interval), low(b)));
high(interval, (std::max)(high(interval), high(b)));
return retval;
}
struct y_i_encompass : gtl_yes {};
// Enlarge `this` Interval to encompass the specified Interval
template <typename interval_type>
typename enable_if< typename gtl_and<y_i_encompass, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type>::type,
bool>::type
encompass(interval_type& interval, typename interval_traits<interval_type>::coordinate_type b) {
bool retval = !contains(interval, b, true);
low(interval, (std::min)(low(interval), b));
high(interval, (std::max)(high(interval), b));
return retval;
}
struct y_i_get_half : gtl_yes {};
// gets the half of the interval as an interval
template <typename interval_type>
typename enable_if<typename gtl_and<y_i_get_half, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type>::type, interval_type>::type
get_half(const interval_type& interval, direction_1d d1d) {
typedef typename interval_traits<interval_type>::coordinate_type Unit;
Unit c = (get(interval, LOW) + get(interval, HIGH)) / 2;
return construct<interval_type>((d1d == LOW) ? get(interval, LOW) : c,
(d1d == LOW) ? c : get(interval, HIGH));
}
struct y_i_join_with : gtl_yes {};
// returns true if the 2 intervals exactly touch at one value, like in l1 <= h1 == l2 <= h2
// sets the argument to the joined interval
template <typename interval_type, typename interval_type_2>
typename enable_if<
typename gtl_and_3<y_i_join_with, typename is_mutable_interval_concept<typename geometry_concept<interval_type>::type>::type,
typename is_interval_concept<typename geometry_concept<interval_type_2>::type>::type>::type,
bool>::type
join_with(interval_type& interval, const interval_type_2& b) {
if(abuts(interval, b)) {
encompass(interval, b);
return true;
}
return false;
}
template <class T>
template <class T2>
interval_data<T>& interval_data<T>::operator=(const T2& rvalue) {
assign(*this, rvalue);
return *this;
}
template <typename T>
struct geometry_concept<interval_data<T> > {
typedef interval_concept type;
};
}
}
#endif