208 lines
8.2 KiB
C++
208 lines
8.2 KiB
C++
/*
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Copyright 2008 Intel Corporation
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Use, modification and distribution are subject to the Boost Software License,
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Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt).
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*/
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#ifndef BOOST_POLYGON_POLYGON_SET_VIEW_HPP
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#define BOOST_POLYGON_POLYGON_SET_VIEW_HPP
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namespace boost { namespace polygon{
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template <typename coordinate_type>
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inline void polygon_set_data<coordinate_type>::clean() const {
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if(dirty_) {
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polygon_45_set_data<coordinate_type> tmp;
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if(downcast(tmp) ) {
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tmp.clean();
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data_.clear();
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is_45_ = true;
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polygon_set_data<coordinate_type> tmp2;
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tmp2.insert(tmp);
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data_.swap(tmp2.data_);
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dirty_ = false;
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sort();
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} else {
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sort();
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arbitrary_boolean_op<coordinate_type> abo;
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polygon_set_data<coordinate_type> tmp2;
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abo.execute(tmp2, begin(), end(), end(), end(), 0);
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data_.swap(tmp2.data_);
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is_45_ = tmp2.is_45_;
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dirty_ = false;
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}
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}
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}
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template <>
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inline void polygon_set_data<double>::clean() const {
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if(dirty_) {
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sort();
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arbitrary_boolean_op<double> abo;
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polygon_set_data<double> tmp2;
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abo.execute(tmp2, begin(), end(), end(), end(), 0);
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data_.swap(tmp2.data_);
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is_45_ = tmp2.is_45_;
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dirty_ = false;
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}
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}
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template <typename value_type, typename arg_type>
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inline void insert_into_view_arg(value_type& dest, const arg_type& arg);
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template <typename ltype, typename rtype, int op_type>
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class polygon_set_view;
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template <typename ltype, typename rtype, int op_type>
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struct polygon_set_traits<polygon_set_view<ltype, rtype, op_type> > {
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typedef typename polygon_set_view<ltype, rtype, op_type>::coordinate_type coordinate_type;
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typedef typename polygon_set_view<ltype, rtype, op_type>::iterator_type iterator_type;
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typedef typename polygon_set_view<ltype, rtype, op_type>::operator_arg_type operator_arg_type;
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static inline iterator_type begin(const polygon_set_view<ltype, rtype, op_type>& polygon_set);
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static inline iterator_type end(const polygon_set_view<ltype, rtype, op_type>& polygon_set);
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static inline bool clean(const polygon_set_view<ltype, rtype, op_type>& polygon_set);
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static inline bool sort(const polygon_set_view<ltype, rtype, op_type>& polygon_set);
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};
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//template <typename value_type, typename geometry_type_1, typename geometry_type_2, int op_type>
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//void execute_boolean_op(value_type& output_, const geometry_type_1& lvalue_, const geometry_type_2& rvalue_,
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// double coord) {
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// typedef geometry_type_1 ltype;
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// typedef geometry_type_2 rtype;
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// typedef typename polygon_set_traits<ltype>::coordinate_type coordinate_type;
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// value_type linput_;
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// value_type rinput_;
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// insert_into_view_arg(linput_, lvalue_);
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// insert_into_view_arg(rinput_, rvalue_);
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// arbitrary_boolean_op<coordinate_type> abo;
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// abo.execute(output_, linput_.begin(), linput_.end(),
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// rinput_.begin(), rinput_.end(), op_type);
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//}
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template <typename value_type, typename geometry_type_1, typename geometry_type_2, int op_type>
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void execute_boolean_op(value_type& output_, const geometry_type_1& lvalue_, const geometry_type_2& rvalue_) {
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typedef geometry_type_1 ltype;
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typedef geometry_type_2 rtype;
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typedef typename polygon_set_traits<ltype>::coordinate_type coordinate_type;
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value_type linput_;
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value_type rinput_;
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insert_into_view_arg(linput_, lvalue_);
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insert_into_view_arg(rinput_, rvalue_);
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polygon_45_set_data<coordinate_type> l45, r45, o45;
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if(linput_.downcast(l45) && rinput_.downcast(r45)) {
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//the op codes are screwed up between 45 and arbitrary
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#ifdef BOOST_POLYGON_MSVC
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#pragma warning (disable: 4127)
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#endif
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if(op_type < 2)
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l45.template applyAdaptiveBoolean_<op_type>(o45, r45);
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else if(op_type == 2)
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l45.template applyAdaptiveBoolean_<3>(o45, r45);
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else
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l45.template applyAdaptiveBoolean_<2>(o45, r45);
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#ifdef BOOST_POLYGON_MSVC
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#pragma warning (default: 4127)
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#endif
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output_.insert(o45);
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} else {
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arbitrary_boolean_op<coordinate_type> abo;
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abo.execute(output_, linput_.begin(), linput_.end(),
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rinput_.begin(), rinput_.end(), op_type);
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}
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}
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template <typename ltype, typename rtype, int op_type>
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class polygon_set_view {
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public:
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typedef typename polygon_set_traits<ltype>::coordinate_type coordinate_type;
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typedef polygon_set_data<coordinate_type> value_type;
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typedef typename value_type::iterator_type iterator_type;
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typedef polygon_set_view operator_arg_type;
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private:
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const ltype& lvalue_;
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const rtype& rvalue_;
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mutable value_type output_;
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mutable bool evaluated_;
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polygon_set_view& operator=(const polygon_set_view&);
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public:
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polygon_set_view(const ltype& lvalue,
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const rtype& rvalue ) :
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lvalue_(lvalue), rvalue_(rvalue), output_(), evaluated_(false) {}
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// get iterator to begin vertex data
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public:
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const value_type& value() const {
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if(!evaluated_) {
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evaluated_ = true;
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execute_boolean_op<value_type, ltype, rtype, op_type>(output_, lvalue_, rvalue_);
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}
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return output_;
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}
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public:
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iterator_type begin() const { return value().begin(); }
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iterator_type end() const { return value().end(); }
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bool dirty() const { return false; } //result of a boolean is clean
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bool sorted() const { return true; } //result of a boolean is sorted
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void sort() const {} //is always sorted
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};
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template <typename ltype, typename rtype, int op_type>
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typename polygon_set_traits<polygon_set_view<ltype, rtype, op_type> >::iterator_type
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polygon_set_traits<polygon_set_view<ltype, rtype, op_type> >::
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begin(const polygon_set_view<ltype, rtype, op_type>& polygon_set) {
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return polygon_set.begin();
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}
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template <typename ltype, typename rtype, int op_type>
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typename polygon_set_traits<polygon_set_view<ltype, rtype, op_type> >::iterator_type
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polygon_set_traits<polygon_set_view<ltype, rtype, op_type> >::
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end(const polygon_set_view<ltype, rtype, op_type>& polygon_set) {
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return polygon_set.end();
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}
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template <typename ltype, typename rtype, int op_type>
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bool polygon_set_traits<polygon_set_view<ltype, rtype, op_type> >::
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clean(const polygon_set_view<ltype, rtype, op_type>& ) {
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return true; }
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template <typename ltype, typename rtype, int op_type>
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bool polygon_set_traits<polygon_set_view<ltype, rtype, op_type> >::
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sort(const polygon_set_view<ltype, rtype, op_type>& ) {
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return true; }
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template <typename value_type, typename arg_type>
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inline void insert_into_view_arg(value_type& dest, const arg_type& arg) {
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typedef typename polygon_set_traits<arg_type>::iterator_type literator;
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literator itr1, itr2;
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itr1 = polygon_set_traits<arg_type>::begin(arg);
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itr2 = polygon_set_traits<arg_type>::end(arg);
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dest.insert(itr1, itr2);
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}
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template <typename geometry_type_1, typename geometry_type_2, int op_type>
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geometry_type_1& self_assignment_boolean_op(geometry_type_1& lvalue_, const geometry_type_2& rvalue_) {
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typedef geometry_type_1 ltype;
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typedef typename polygon_set_traits<ltype>::coordinate_type coordinate_type;
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typedef polygon_set_data<coordinate_type> value_type;
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value_type output_;
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execute_boolean_op<value_type, geometry_type_1, geometry_type_2, op_type>(output_, lvalue_, rvalue_);
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polygon_set_mutable_traits<geometry_type_1>::set(lvalue_, output_.begin(), output_.end());
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return lvalue_;
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}
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// copy constructor
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template <typename coordinate_type>
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template <typename ltype, typename rtype, int op_type>
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polygon_set_data<coordinate_type>::polygon_set_data(const polygon_set_view<ltype, rtype, op_type>& that) :
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data_(that.value().data_), dirty_(that.value().dirty_), unsorted_(that.value().unsorted_), is_45_(that.value().is_45_) {}
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template <typename ltype, typename rtype, int op_type>
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struct geometry_concept<polygon_set_view<ltype, rtype, op_type> > { typedef polygon_set_concept type; };
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}
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}
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#endif
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