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1 // Boost.Geometry (aka GGL, Generic Geometry Library)
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2
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3 // Copyright (c) 2007-2014 Barend Gehrels, Amsterdam, the Netherlands.
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4 // Copyright (c) 2008-2014 Bruno Lalande, Paris, France.
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5 // Copyright (c) 2009-2014 Mateusz Loskot, London, UK.
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6 // Copyright (c) 2013-2014 Adam Wulkiewicz, Lodz, Poland.
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7
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8 // This file was modified by Oracle on 2013-2014.
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9 // Modifications copyright (c) 2013-2014, Oracle and/or its affiliates.
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10
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11 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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12 // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
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13
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14 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
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15 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
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16
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17 // Use, modification and distribution is subject to the Boost Software License,
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18 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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19 // http://www.boost.org/LICENSE_1_0.txt)
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20
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21 #ifndef BOOST_GEOMETRY_ALGORITHMS_POLICIES_DISJOINT_INTERRUPT_POLICY_HPP
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22 #define BOOST_GEOMETRY_ALGORITHMS_POLICIES_DISJOINT_INTERRUPT_POLICY_HPP
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23
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24 #include <boost/range.hpp>
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25
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26
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27 namespace boost { namespace geometry
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28 {
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29
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30
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31 #ifndef DOXYGEN_NO_DETAIL
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32 namespace detail { namespace disjoint
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33 {
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34
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35
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36 struct disjoint_interrupt_policy
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37 {
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38 static bool const enabled = true;
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39 bool has_intersections;
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40
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41 inline disjoint_interrupt_policy()
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42 : has_intersections(false)
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43 {}
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44
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45 template <typename Range>
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46 inline bool apply(Range const& range)
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47 {
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48 // If there is any IP in the range, it is NOT disjoint
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49 if (boost::size(range) > 0)
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50 {
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51 has_intersections = true;
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52 return true;
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53 }
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54 return false;
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55 }
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56 };
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57
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58
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59
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60 }} // namespace detail::disjoint
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61 #endif // DOXYGEN_NO_DETAIL
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62
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63
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64 }} // namespace boost::geometry
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65
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66
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67 #endif // BOOST_GEOMETRY_ALGORITHMS_POLICIES_DISJOINT_INTERRUPT_POLICY_HPP
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