156 lines
4.2 KiB
C++
156 lines
4.2 KiB
C++
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// Boost.Polygon library voronoi.hpp header file
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// Copyright Andrii Sydorchuk 2010-2012.
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// Distributed under the Boost Software License, Version 1.0.
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// (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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// See http://www.boost.org for updates, documentation, and revision history.
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#ifndef BOOST_POLYGON_VORONOI
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#define BOOST_POLYGON_VORONOI
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#include "isotropy.hpp"
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#include "point_concept.hpp"
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#include "segment_concept.hpp"
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#include "voronoi_builder.hpp"
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#include "voronoi_diagram.hpp"
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// Public methods to compute Voronoi diagram.
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// Coordinates of the points and of the endpoints of the segments should belong
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// to the 32-bit signed integer range [-2^31, 2^31-1]. To use wider input
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// coordinate range voronoi_builder configuration via coordinate type traits is
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// is required.
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// Complexity - O(N*logN), memory usage - O(N), N - number of input objects.
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namespace boost {
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namespace polygon {
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template <typename Point, typename VB>
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typename enable_if<
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typename gtl_if<
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typename is_point_concept<
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typename geometry_concept<Point>::type
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>::type
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>::type,
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std::size_t
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>::type
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insert(const Point& point, VB* vb) {
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return vb->insert_point(x(point), y(point));
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}
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template <typename PointIterator, typename VB>
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typename enable_if<
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typename gtl_if<
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typename is_point_concept<
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typename geometry_concept<
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typename std::iterator_traits<PointIterator>::value_type
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>::type
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>::type
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>::type,
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void
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>::type
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insert(PointIterator first, const PointIterator last, VB* vb) {
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for (PointIterator it = first; it != last; ++it) {
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insert(*it, vb);
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}
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}
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template <typename Segment, typename VB>
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typename enable_if<
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typename gtl_if<
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typename is_segment_concept<
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typename geometry_concept<Segment>::type
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>::type
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>::type,
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std::size_t
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>::type
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insert(const Segment& segment, VB* vb) {
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return vb->insert_segment(
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x(low(segment)), y(low(segment)),
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x(high(segment)), y(high(segment)));
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}
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template <typename SegmentIterator, typename VB>
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typename enable_if<
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typename gtl_if<
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typename is_segment_concept<
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typename geometry_concept<
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typename std::iterator_traits<SegmentIterator>::value_type
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>::type
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>::type
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>::type,
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void
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>::type
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insert(SegmentIterator first, SegmentIterator last, VB* vb) {
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for (SegmentIterator it = first; it != last; ++it) {
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insert(*it, vb);
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}
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}
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template <typename PointIterator, typename VD>
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typename enable_if<
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typename gtl_if<
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typename is_point_concept<
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typename geometry_concept<
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typename std::iterator_traits<PointIterator>::value_type
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>::type
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>::type
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>::type,
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void
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>::type
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construct_voronoi(PointIterator first, PointIterator last, VD* vd) {
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default_voronoi_builder builder;
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insert(first, last, &builder);
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builder.construct(vd);
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}
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template <typename SegmentIterator, typename VD>
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typename enable_if<
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typename gtl_if<
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typename is_segment_concept<
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typename geometry_concept<
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typename std::iterator_traits<SegmentIterator>::value_type
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>::type
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>::type
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>::type,
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void
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>::type
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construct_voronoi(SegmentIterator first, SegmentIterator last, VD* vd) {
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default_voronoi_builder builder;
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insert(first, last, &builder);
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builder.construct(vd);
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}
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template <typename PointIterator, typename SegmentIterator, typename VD>
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typename enable_if<
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typename gtl_and<
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typename gtl_if<
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typename is_point_concept<
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typename geometry_concept<
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typename std::iterator_traits<PointIterator>::value_type
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>::type
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>::type
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>::type,
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typename gtl_if<
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typename is_segment_concept<
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typename geometry_concept<
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typename std::iterator_traits<SegmentIterator>::value_type
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>::type
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>::type
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>::type
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>::type,
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void
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>::type
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construct_voronoi(PointIterator p_first, PointIterator p_last,
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SegmentIterator s_first, SegmentIterator s_last, VD* vd) {
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default_voronoi_builder builder;
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insert(p_first, p_last, &builder);
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insert(s_first, s_last, &builder);
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builder.construct(vd);
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}
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} // polygon
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} // boost
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#endif // BOOST_POLYGON_VORONOI
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