/*
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_POLYGON_90_SET_VIEW_HPP
#define BOOST_POLYGON_POLYGON_90_SET_VIEW_HPP
namespace boost { namespace polygon{
struct operator_provides_storage {};
struct operator_requires_copy {};
template <typename value_type, typename arg_type>
inline void insert_into_view_arg(value_type& dest, const arg_type& arg, orientation_2d orient);
template <typename ltype, typename rtype, typename op_type>
class polygon_90_set_view;
template <typename ltype, typename rtype, typename op_type>
struct polygon_90_set_traits<polygon_90_set_view<ltype, rtype, op_type> > {
typedef typename polygon_90_set_view<ltype, rtype, op_type>::coordinate_type coordinate_type;
typedef typename polygon_90_set_view<ltype, rtype, op_type>::iterator_type iterator_type;
typedef typename polygon_90_set_view<ltype, rtype, op_type>::operator_arg_type operator_arg_type;
static inline iterator_type begin(const polygon_90_set_view<ltype, rtype, op_type>& polygon_set);
static inline iterator_type end(const polygon_90_set_view<ltype, rtype, op_type>& polygon_set);
static inline orientation_2d orient(const polygon_90_set_view<ltype, rtype, op_type>& polygon_set);
static inline bool clean(const polygon_90_set_view<ltype, rtype, op_type>& polygon_set);
static inline bool sorted(const polygon_90_set_view<ltype, rtype, op_type>& polygon_set);
};
template <typename value_type, typename ltype, typename rtype, typename op_type>
struct compute_90_set_value {
static
void value(value_type& output_, const ltype& lvalue_, const rtype& rvalue_, orientation_2d orient_) {
value_type linput_(orient_);
value_type rinput_(orient_);
orientation_2d orient_l = polygon_90_set_traits<ltype>::orient(lvalue_);
orientation_2d orient_r = polygon_90_set_traits<rtype>::orient(rvalue_);
//std::cout << "compute_90_set_value-0 orientations (left, right, out):\t" << orient_l.to_int()
// << "," << orient_r.to_int() << "," << orient_.to_int() << std::endl;
insert_into_view_arg(linput_, lvalue_, orient_l);
insert_into_view_arg(rinput_, rvalue_, orient_r);
output_.applyBooleanBinaryOp(linput_.begin(), linput_.end(),
rinput_.begin(), rinput_.end(), boolean_op::BinaryCount<op_type>());
}
};
template <typename value_type, typename lcoord, typename rcoord, typename op_type>
struct compute_90_set_value<value_type, polygon_90_set_data<lcoord>, polygon_90_set_data<rcoord>, op_type> {
static
void value(value_type& output_, const polygon_90_set_data<lcoord>& lvalue_,
const polygon_90_set_data<rcoord>& rvalue_, orientation_2d orient_) {
orientation_2d orient_l = lvalue_.orient();
orientation_2d orient_r = rvalue_.orient();
value_type linput_(orient_);
value_type rinput_(orient_);
//std::cout << "compute_90_set_value-1 orientations (left, right, out):\t" << orient_l.to_int()
// << "," << orient_r.to_int() << "," << orient_.to_int() << std::endl;
if((orient_ == orient_l) && (orient_== orient_r)){ // assume that most of the time this condition is met
lvalue_.sort();
rvalue_.sort();
output_.applyBooleanBinaryOp(lvalue_.begin(), lvalue_.end(),
rvalue_.begin(), rvalue_.end(), boolean_op::BinaryCount<op_type>());
}else if((orient_ != orient_l) && (orient_!= orient_r)){ // both the orientations are not equal to input
// easier way is to ignore the input orientation and use the input data's orientation, but not done so
insert_into_view_arg(linput_, lvalue_, orient_l);
insert_into_view_arg(rinput_, rvalue_, orient_r);
output_.applyBooleanBinaryOp(linput_.begin(), linput_.end(),
rinput_.begin(), rinput_.end(), boolean_op::BinaryCount<op_type>());
}else if(orient_ != orient_l){ // left hand side orientation is different
insert_into_view_arg(linput_, lvalue_, orient_l);
rvalue_.sort();
output_.applyBooleanBinaryOp(linput_.begin(), linput_.end(),
rvalue_.begin(), rvalue_.end(), boolean_op::BinaryCount<op_type>());
} else if(orient_ != orient_r){ // right hand side orientation is different
insert_into_view_arg(rinput_, rvalue_, orient_r);
lvalue_.sort();
output_.applyBooleanBinaryOp(lvalue_.begin(), lvalue_.end(),
rinput_.begin(), rinput_.end(), boolean_op::BinaryCount<op_type>());
}
}
};
template <typename value_type, typename lcoord, typename rtype, typename op_type>
struct compute_90_set_value<value_type, polygon_90_set_data<lcoord>, rtype, op_type> {
static
void value(value_type& output_, const polygon_90_set_data<lcoord>& lvalue_,
const rtype& rvalue_, orientation_2d orient_) {
value_type rinput_(orient_);
lvalue_.sort();
orientation_2d orient_r = polygon_90_set_traits<rtype>::orient(rvalue_);
//std::cout << "compute_90_set_value-2 orientations (right, out):\t" << orient_r.to_int()
// << "," << orient_.to_int() << std::endl;
insert_into_view_arg(rinput_, rvalue_, orient_r);
output_.applyBooleanBinaryOp(lvalue_.begin(), lvalue_.end(),
rinput_.begin(), rinput_.end(), boolean_op::BinaryCount<op_type>());
}
};
template <typename value_type, typename ltype, typename rcoord, typename op_type>
struct compute_90_set_value<value_type, ltype, polygon_90_set_data<rcoord>, op_type> {
static
void value(value_type& output_, const ltype& lvalue_,
const polygon_90_set_data<rcoord>& rvalue_, orientation_2d orient_) {
value_type linput_(orient_);
orientation_2d orient_l = polygon_90_set_traits<ltype>::orient(lvalue_);
insert_into_view_arg(linput_, lvalue_, orient_l);
rvalue_.sort();
//std::cout << "compute_90_set_value-3 orientations (left, out):\t" << orient_l.to_int()
// << "," << orient_.to_int() << std::endl;
output_.applyBooleanBinaryOp(linput_.begin(), linput_.end(),
rvalue_.begin(), rvalue_.end(), boolean_op::BinaryCount<op_type>());
}
};
template <typename ltype, typename rtype, typename op_type>
class polygon_90_set_view {
public:
typedef typename polygon_90_set_traits<ltype>::coordinate_type coordinate_type;
typedef polygon_90_set_data<coordinate_type> value_type;
typedef typename value_type::iterator_type iterator_type;
typedef polygon_90_set_view operator_arg_type;
private:
const ltype& lvalue_;
const rtype& rvalue_;
orientation_2d orient_;
op_type op_;
mutable value_type output_;
mutable bool evaluated_;
polygon_90_set_view& operator=(const polygon_90_set_view&);
public:
polygon_90_set_view(const ltype& lvalue,
const rtype& rvalue,
orientation_2d orient,
op_type op) :
lvalue_(lvalue), rvalue_(rvalue), orient_(orient), op_(op), output_(orient), evaluated_(false) {}
// get iterator to begin vertex data
private:
const value_type& value() const {
if(!evaluated_) {
evaluated_ = true;
compute_90_set_value<value_type, ltype, rtype, op_type>::value(output_, lvalue_, rvalue_, orient_);
}
return output_;
}
public:
iterator_type begin() const { return value().begin(); }
iterator_type end() const { return value().end(); }
orientation_2d orient() const { return orient_; }
bool dirty() const { return false; } //result of a boolean is clean
bool sorted() const { return true; } //result of a boolean is sorted
// template <typename input_iterator_type>
// void set(input_iterator_type input_begin, input_iterator_type input_end,
// orientation_2d orient) const {
// orient_ = orient;
// output_.clear();
// output_.insert(output_.end(), input_begin, input_end);
// polygon_sort(output_.begin(), output_.end());
// }
void sort() const {} //is always sorted
};
template <typename ltype, typename rtype, typename op_type>
struct geometry_concept<polygon_90_set_view<ltype, rtype, op_type> > {
typedef polygon_90_set_concept type;
};
template <typename ltype, typename rtype, typename op_type>
typename polygon_90_set_traits<polygon_90_set_view<ltype, rtype, op_type> >::iterator_type
polygon_90_set_traits<polygon_90_set_view<ltype, rtype, op_type> >::
begin(const polygon_90_set_view<ltype, rtype, op_type>& polygon_set) {
return polygon_set.begin();
}
template <typename ltype, typename rtype, typename op_type>
typename polygon_90_set_traits<polygon_90_set_view<ltype, rtype, op_type> >::iterator_type
polygon_90_set_traits<polygon_90_set_view<ltype, rtype, op_type> >::
end(const polygon_90_set_view<ltype, rtype, op_type>& polygon_set) {
return polygon_set.end();
}
// template <typename ltype, typename rtype, typename op_type>
// template <typename input_iterator_type>
// void polygon_90_set_traits<polygon_90_set_view<ltype, rtype, op_type> >::
// set(polygon_90_set_view<ltype, rtype, op_type>& polygon_set,
// input_iterator_type input_begin, input_iterator_type input_end,
// orientation_2d orient) {
// polygon_set.set(input_begin, input_end, orient);
// }
template <typename ltype, typename rtype, typename op_type>
orientation_2d polygon_90_set_traits<polygon_90_set_view<ltype, rtype, op_type> >::
orient(const polygon_90_set_view<ltype, rtype, op_type>& polygon_set) {
return polygon_set.orient(); }
template <typename ltype, typename rtype, typename op_type>
bool polygon_90_set_traits<polygon_90_set_view<ltype, rtype, op_type> >::
clean(const polygon_90_set_view<ltype, rtype, op_type>& polygon_set) {
return true; }
template <typename ltype, typename rtype, typename op_type>
bool polygon_90_set_traits<polygon_90_set_view<ltype, rtype, op_type> >::
sorted(const polygon_90_set_view<ltype, rtype, op_type>& polygon_set) {
return true; }
template <typename value_type, typename arg_type>
inline void insert_into_view_arg(value_type& dest, const arg_type& arg, orientation_2d orient) {
typedef typename polygon_90_set_traits<arg_type>::iterator_type literator;
literator itr1, itr2;
itr1 = polygon_90_set_traits<arg_type>::begin(arg);
itr2 = polygon_90_set_traits<arg_type>::end(arg);
dest.insert(itr1, itr2, orient);
dest.sort();
}
template <typename T>
template <typename ltype, typename rtype, typename op_type>
inline polygon_90_set_data<T>& polygon_90_set_data<T>::operator=(const polygon_90_set_view<ltype, rtype, op_type>& that) {
set(that.begin(), that.end(), that.orient());
dirty_ = false;
unsorted_ = false;
return *this;
}
template <typename T>
template <typename ltype, typename rtype, typename op_type>
inline polygon_90_set_data<T>::polygon_90_set_data(const polygon_90_set_view<ltype, rtype, op_type>& that) :
orient_(that.orient()), data_(that.begin(), that.end()), dirty_(false), unsorted_(false) {}
template <typename geometry_type_1, typename geometry_type_2>
struct self_assign_operator_lvalue {
typedef geometry_type_1& type;
};
template <typename type_1, typename type_2>
struct by_value_binary_operator {
typedef type_1 type;
};
template <typename geometry_type_1, typename geometry_type_2, typename op_type>
geometry_type_1& self_assignment_boolean_op(geometry_type_1& lvalue_, const geometry_type_2& rvalue_) {
typedef geometry_type_1 ltype;
typedef geometry_type_2 rtype;
typedef typename polygon_90_set_traits<ltype>::coordinate_type coordinate_type;
typedef polygon_90_set_data<coordinate_type> value_type;
orientation_2d orient_ = polygon_90_set_traits<ltype>::orient(lvalue_);
//BM: rvalue_ data set may have its own orientation for scanline
orientation_2d orient_r = polygon_90_set_traits<rtype>::orient(rvalue_);
//std::cout << "self-assignment boolean-op (left, right, out):\t" << orient_.to_int()
// << "," << orient_r.to_int() << "," << orient_.to_int() << std::endl;
value_type linput_(orient_);
// BM: the rinput_ set's (that stores the rvalue_ dataset polygons) scanline orientation is *forced*
// to be same as linput
value_type rinput_(orient_);
//BM: The output dataset's scanline orient is set as equal to first input dataset's (lvalue_) orientation
value_type output_(orient_);
insert_into_view_arg(linput_, lvalue_, orient_);
// BM: The last argument orient_r is the user initialized scanline orientation for rvalue_ data set.
// But since rinput (see above) is initialized to scanline orientation consistent with the lvalue_
// data set, this insertion operation will change the incoming rvalue_ dataset's scanline orientation
insert_into_view_arg(rinput_, rvalue_, orient_r);
// BM: boolean operation and output uses lvalue_ dataset's scanline orientation.
output_.applyBooleanBinaryOp(linput_.begin(), linput_.end(),
rinput_.begin(), rinput_.end(), boolean_op::BinaryCount<op_type>());
polygon_90_set_mutable_traits<geometry_type_1>::set(lvalue_, output_.begin(), output_.end(), orient_);
return lvalue_;
}
namespace operators {
struct y_ps90_b : gtl_yes {};
template <typename geometry_type_1, typename geometry_type_2>
typename enable_if< typename gtl_and_3< y_ps90_b,
typename is_polygon_90_set_type<geometry_type_1>::type,
typename is_polygon_90_set_type<geometry_type_2>::type>::type,
polygon_90_set_view<geometry_type_1, geometry_type_2, boolean_op::BinaryOr> >::type
operator|(const geometry_type_1& lvalue, const geometry_type_2& rvalue) {
return polygon_90_set_view<geometry_type_1, geometry_type_2, boolean_op::BinaryOr>
(lvalue, rvalue,
polygon_90_set_traits<geometry_type_1>::orient(lvalue),
boolean_op::BinaryOr());
}
struct y_ps90_p : gtl_yes {};
template <typename geometry_type_1, typename geometry_type_2>
typename enable_if<
typename gtl_and_3< y_ps90_p,
typename gtl_if<typename is_polygon_90_set_type<geometry_type_1>::type>::type,
typename gtl_if<typename is_polygon_90_set_type<geometry_type_2>::type>::type>::type,
polygon_90_set_view<geometry_type_1, geometry_type_2, boolean_op::BinaryOr> >::type
operator+(const geometry_type_1& lvalue, const geometry_type_2& rvalue) {
return polygon_90_set_view<geometry_type_1, geometry_type_2, boolean_op::BinaryOr>
(lvalue, rvalue,
polygon_90_set_traits<geometry_type_1>::orient(lvalue),
boolean_op::BinaryOr());
}
struct y_ps90_s : gtl_yes {};
template <typename geometry_type_1, typename geometry_type_2>
typename enable_if< typename gtl_and_3< y_ps90_s,
typename is_polygon_90_set_type<geometry_type_1>::type,
typename is_polygon_90_set_type<geometry_type_2>::type>::type,
polygon_90_set_view<geometry_type_1, geometry_type_2, boolean_op::BinaryAnd> >::type
operator*(const geometry_type_1& lvalue, const geometry_type_2& rvalue) {
return polygon_90_set_view<geometry_type_1, geometry_type_2, boolean_op::BinaryAnd>
(lvalue, rvalue,
polygon_90_set_traits<geometry_type_1>::orient(lvalue),
boolean_op::BinaryAnd());
}
struct y_ps90_a : gtl_yes {};
template <typename geometry_type_1, typename geometry_type_2>
typename enable_if< typename gtl_and_3< y_ps90_a,
typename is_polygon_90_set_type<geometry_type_1>::type,
typename is_polygon_90_set_type<geometry_type_2>::type>::type,
polygon_90_set_view<geometry_type_1, geometry_type_2, boolean_op::BinaryAnd> >::type
operator&(const geometry_type_1& lvalue, const geometry_type_2& rvalue) {
return polygon_90_set_view<geometry_type_1, geometry_type_2, boolean_op::BinaryAnd>
(lvalue, rvalue,
polygon_90_set_traits<geometry_type_1>::orient(lvalue),
boolean_op::BinaryAnd());
}
struct y_ps90_x : gtl_yes {};
template <typename geometry_type_1, typename geometry_type_2>
typename enable_if< typename gtl_and_3< y_ps90_x,
typename is_polygon_90_set_type<geometry_type_1>::type,
typename is_polygon_90_set_type<geometry_type_2>::type>::type,
polygon_90_set_view<geometry_type_1, geometry_type_2, boolean_op::BinaryXor> >::type
operator^(const geometry_type_1& lvalue, const geometry_type_2& rvalue) {
return polygon_90_set_view<geometry_type_1, geometry_type_2, boolean_op::BinaryXor>
(lvalue, rvalue,
polygon_90_set_traits<geometry_type_1>::orient(lvalue),
boolean_op::BinaryXor());
}
struct y_ps90_m : gtl_yes {};
template <typename geometry_type_1, typename geometry_type_2>
typename enable_if< typename gtl_and_3< y_ps90_m,
typename gtl_if<typename is_polygon_90_set_type<geometry_type_1>::type>::type,
typename gtl_if<typename is_polygon_90_set_type<geometry_type_2>::type>::type>::type,
polygon_90_set_view<geometry_type_1, geometry_type_2, boolean_op::BinaryNot> >::type
operator-(const geometry_type_1& lvalue, const geometry_type_2& rvalue) {
return polygon_90_set_view<geometry_type_1, geometry_type_2, boolean_op::BinaryNot>
(lvalue, rvalue,
polygon_90_set_traits<geometry_type_1>::orient(lvalue),
boolean_op::BinaryNot());
}
struct y_ps90_pe : gtl_yes {};
template <typename coordinate_type_1, typename geometry_type_2>
typename enable_if< typename gtl_and< y_ps90_pe, typename is_polygon_90_set_type<geometry_type_2>::type>::type,
polygon_90_set_data<coordinate_type_1> >::type &
operator+=(polygon_90_set_data<coordinate_type_1>& lvalue, const geometry_type_2& rvalue) {
lvalue.insert(polygon_90_set_traits<geometry_type_2>::begin(rvalue), polygon_90_set_traits<geometry_type_2>::end(rvalue),
polygon_90_set_traits<geometry_type_2>::orient(rvalue));
return lvalue;
}
struct y_ps90_be : gtl_yes {};
//
template <typename coordinate_type_1, typename geometry_type_2>
typename enable_if< typename gtl_and< y_ps90_be, typename is_polygon_90_set_type<geometry_type_2>::type>::type,
polygon_90_set_data<coordinate_type_1> >::type &
operator|=(polygon_90_set_data<coordinate_type_1>& lvalue, const geometry_type_2& rvalue) {
return lvalue += rvalue;
}
struct y_ps90_pe2 : gtl_yes {};
//normal self assignment boolean operations
template <typename geometry_type_1, typename geometry_type_2>
typename enable_if< typename gtl_and_3< y_ps90_pe2, typename is_mutable_polygon_90_set_type<geometry_type_1>::type,
typename is_polygon_90_set_type<geometry_type_2>::type>::type,
geometry_type_1>::type &
operator+=(geometry_type_1& lvalue, const geometry_type_2& rvalue) {
return self_assignment_boolean_op<geometry_type_1, geometry_type_2, boolean_op::BinaryOr>(lvalue, rvalue);
}
struct y_ps90_be2 : gtl_yes {};
template <typename geometry_type_1, typename geometry_type_2>
typename enable_if< typename gtl_and_3<y_ps90_be2, typename is_mutable_polygon_90_set_type<geometry_type_1>::type,
typename is_polygon_90_set_type<geometry_type_2>::type>::type,
geometry_type_1>::type &
operator|=(geometry_type_1& lvalue, const geometry_type_2& rvalue) {
return self_assignment_boolean_op<geometry_type_1, geometry_type_2, boolean_op::BinaryOr>(lvalue, rvalue);
}
struct y_ps90_se : gtl_yes {};
template <typename geometry_type_1, typename geometry_type_2>
typename enable_if< typename gtl_and_3<y_ps90_se, typename is_mutable_polygon_90_set_type<geometry_type_1>::type,
typename is_polygon_90_set_type<geometry_type_2>::type>::type,
geometry_type_1>::type &
operator*=(geometry_type_1& lvalue, const geometry_type_2& rvalue) {
return self_assignment_boolean_op<geometry_type_1, geometry_type_2, boolean_op::BinaryAnd>(lvalue, rvalue);
}
struct y_ps90_ae : gtl_yes {};
template <typename geometry_type_1, typename geometry_type_2>
typename enable_if< typename gtl_and_3<y_ps90_ae, typename is_mutable_polygon_90_set_type<geometry_type_1>::type,
typename is_polygon_90_set_type<geometry_type_2>::type>::type,
geometry_type_1>::type &
operator&=(geometry_type_1& lvalue, const geometry_type_2& rvalue) {
return self_assignment_boolean_op<geometry_type_1, geometry_type_2, boolean_op::BinaryAnd>(lvalue, rvalue);
}
struct y_ps90_xe : gtl_yes {};
template <typename geometry_type_1, typename geometry_type_2>
typename enable_if< typename gtl_and_3<y_ps90_xe, typename is_mutable_polygon_90_set_type<geometry_type_1>::type,
typename is_polygon_90_set_type<geometry_type_2>::type>::type,
geometry_type_1>::type &
operator^=(geometry_type_1& lvalue, const geometry_type_2& rvalue) {
return self_assignment_boolean_op<geometry_type_1, geometry_type_2, boolean_op::BinaryXor>(lvalue, rvalue);
}
struct y_ps90_me : gtl_yes {};
template <typename geometry_type_1, typename geometry_type_2>
typename enable_if< typename gtl_and_3< y_ps90_me, typename is_mutable_polygon_90_set_type<geometry_type_1>::type,
typename is_polygon_90_set_type<geometry_type_2>::type>::type,
geometry_type_1>::type &
operator-=(geometry_type_1& lvalue, const geometry_type_2& rvalue) {
return self_assignment_boolean_op<geometry_type_1, geometry_type_2, boolean_op::BinaryNot>(lvalue, rvalue);
}
struct y_ps90_rpe : gtl_yes {};
template <typename geometry_type_1, typename coordinate_type_1>
typename enable_if< typename gtl_and_3<y_ps90_rpe,
typename is_mutable_polygon_90_set_type<geometry_type_1>::type,
typename gtl_same_type<typename geometry_concept<coordinate_type_1>::type, coordinate_concept>::type>::type,
geometry_type_1>::type &
operator+=(geometry_type_1& lvalue, coordinate_type_1 rvalue) {
return resize(lvalue, rvalue);
}
struct y_ps90_rme : gtl_yes {};
template <typename geometry_type_1, typename coordinate_type_1>
typename enable_if< typename gtl_and_3<y_ps90_rme,
typename is_mutable_polygon_90_set_type<geometry_type_1>::type,
typename gtl_same_type<typename geometry_concept<coordinate_type_1>::type, coordinate_concept>::type>::type,
geometry_type_1>::type &
operator-=(geometry_type_1& lvalue, coordinate_type_1 rvalue) {
return resize(lvalue, -rvalue);
}
struct y_ps90_rp : gtl_yes {};
template <typename geometry_type_1, typename coordinate_type_1>
typename enable_if< typename gtl_and_3<y_ps90_rp,
typename gtl_if<typename is_mutable_polygon_90_set_type<geometry_type_1>::type>::type,
typename gtl_if<typename gtl_same_type<typename geometry_concept<coordinate_type_1>::type, coordinate_concept>::type>::type>::type,
geometry_type_1>::type
operator+(const geometry_type_1& lvalue, coordinate_type_1 rvalue) {
geometry_type_1 retval(lvalue);
retval += rvalue;
return retval;
}
struct y_ps90_rm : gtl_yes {};
template <typename geometry_type_1, typename coordinate_type_1>
typename enable_if< typename gtl_and_3<y_ps90_rm,
typename gtl_if<typename is_mutable_polygon_90_set_type<geometry_type_1>::type>::type,
typename gtl_if<typename gtl_same_type<typename geometry_concept<coordinate_type_1>::type, coordinate_concept>::type>::type>::type,
geometry_type_1>::type
operator-(const geometry_type_1& lvalue, coordinate_type_1 rvalue) {
geometry_type_1 retval(lvalue);
retval -= rvalue;
return retval;
}
}
}
}
#endif