437 lines
18 KiB
C++
437 lines
18 KiB
C++
#ifndef GEOSPATIAL_QUERY_HPP
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#define GEOSPATIAL_QUERY_HPP
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#include "util/coordinate_calculation.hpp"
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#include "util/typedefs.hpp"
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#include "engine/phantom_node.hpp"
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#include "util/bearing.hpp"
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#include "util/rectangle.hpp"
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#include "osrm/coordinate.hpp"
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#include <algorithm>
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#include <cmath>
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#include <memory>
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#include <vector>
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namespace osrm
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{
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namespace engine
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{
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// Implements complex queries on top of an RTree and builds PhantomNodes from it.
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//
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// Only holds a weak reference on the RTree!
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template <typename RTreeT, typename DataFacadeT> class GeospatialQuery
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{
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using EdgeData = typename RTreeT::EdgeData;
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using CoordinateList = typename RTreeT::CoordinateList;
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public:
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GeospatialQuery(RTreeT &rtree_,
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std::shared_ptr<CoordinateList> coordinates_,
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DataFacadeT &datafacade_)
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: rtree(rtree_), coordinates(std::move(coordinates_)), datafacade(datafacade_)
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{
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}
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std::vector<EdgeData> Search(const util::RectangleInt2D &bbox)
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{
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return rtree.SearchInBox(bbox);
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}
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// Returns nearest PhantomNodes in the given bearing range within max_distance.
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// Does not filter by small/big component!
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std::vector<PhantomNodeWithDistance>
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NearestPhantomNodesInRange(const util::Coordinate input_coordinate, const double max_distance)
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{
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auto results = rtree.Nearest(input_coordinate,
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[](const EdgeData &)
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{
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return std::make_pair(true, true);
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},
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[max_distance](const std::size_t, const double min_dist)
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{
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return min_dist > max_distance;
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});
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return MakePhantomNodes(input_coordinate, results);
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}
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// Returns nearest PhantomNodes in the given bearing range within max_distance.
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// Does not filter by small/big component!
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std::vector<PhantomNodeWithDistance>
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NearestPhantomNodesInRange(const util::Coordinate input_coordinate,
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const double max_distance,
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const int bearing,
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const int bearing_range)
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{
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auto results =
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rtree.Nearest(input_coordinate,
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[this, bearing, bearing_range, max_distance](const EdgeData &data)
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{
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return checkSegmentBearing(data, bearing, bearing_range);
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},
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[max_distance](const std::size_t, const double min_dist)
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{
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return min_dist > max_distance;
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});
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return MakePhantomNodes(input_coordinate, results);
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}
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// Returns max_results nearest PhantomNodes in the given bearing range.
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// Does not filter by small/big component!
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std::vector<PhantomNodeWithDistance>
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NearestPhantomNodes(const util::Coordinate input_coordinate,
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const unsigned max_results,
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const int bearing,
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const int bearing_range)
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{
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auto results = rtree.Nearest(input_coordinate,
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[this, bearing, bearing_range](const EdgeData &data)
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{
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return checkSegmentBearing(data, bearing, bearing_range);
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},
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[max_results](const std::size_t num_results, const double)
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{
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return num_results >= max_results;
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});
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return MakePhantomNodes(input_coordinate, results);
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}
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// Returns max_results nearest PhantomNodes in the given bearing range within the maximum
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// distance.
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// Does not filter by small/big component!
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std::vector<PhantomNodeWithDistance>
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NearestPhantomNodes(const util::Coordinate input_coordinate,
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const unsigned max_results,
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const double max_distance,
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const int bearing,
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const int bearing_range)
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{
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auto results = rtree.Nearest(
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input_coordinate,
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[this, bearing, bearing_range](const EdgeData &data)
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{
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return checkSegmentBearing(data, bearing, bearing_range);
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},
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[max_results, max_distance](const std::size_t num_results, const double min_dist)
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{
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return num_results >= max_results || min_dist > max_distance;
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});
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return MakePhantomNodes(input_coordinate, results);
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}
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// Returns max_results nearest PhantomNodes.
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// Does not filter by small/big component!
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std::vector<PhantomNodeWithDistance>
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NearestPhantomNodes(const util::Coordinate input_coordinate, const unsigned max_results)
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{
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auto results = rtree.Nearest(input_coordinate,
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[](const EdgeData &)
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{
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return std::make_pair(true, true);
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},
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[max_results](const std::size_t num_results, const double)
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{
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return num_results >= max_results;
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});
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return MakePhantomNodes(input_coordinate, results);
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}
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// Returns max_results nearest PhantomNodes in the given max distance.
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// Does not filter by small/big component!
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std::vector<PhantomNodeWithDistance>
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NearestPhantomNodes(const util::Coordinate input_coordinate,
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const unsigned max_results,
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const double max_distance)
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{
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auto results = rtree.Nearest(
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input_coordinate,
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[](const EdgeData &)
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{
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return std::make_pair(true, true);
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},
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[max_results, max_distance](const std::size_t num_results, const double min_dist)
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{
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return num_results >= max_results || min_dist > max_distance;
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});
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return MakePhantomNodes(input_coordinate, results);
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}
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// Returns the nearest phantom node. If this phantom node is not from a big component
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// a second phantom node is return that is the nearest coordinate in a big component.
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std::pair<PhantomNode, PhantomNode>
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NearestPhantomNodeWithAlternativeFromBigComponent(const util::Coordinate input_coordinate,
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const double max_distance)
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{
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bool has_small_component = false;
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bool has_big_component = false;
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auto results = rtree.Nearest(
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input_coordinate,
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[&has_big_component, &has_small_component](const EdgeData &data)
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{
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auto use_segment =
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(!has_small_component || (!has_big_component && !data.component.is_tiny));
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auto use_directions = std::make_pair(use_segment, use_segment);
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has_big_component = has_big_component || !data.component.is_tiny;
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has_small_component = has_small_component || data.component.is_tiny;
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return use_directions;
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},
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[&has_big_component, max_distance](const std::size_t num_results, const double min_dist)
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{
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return (num_results > 0 && has_big_component) || min_dist > max_distance;
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});
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if (results.size() == 0)
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{
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return std::make_pair(PhantomNode{}, PhantomNode{});
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}
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BOOST_ASSERT(results.size() == 1 || results.size() == 2);
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return std::make_pair(MakePhantomNode(input_coordinate, results.front()).phantom_node,
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MakePhantomNode(input_coordinate, results.back()).phantom_node);
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}
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// Returns the nearest phantom node. If this phantom node is not from a big component
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// a second phantom node is return that is the nearest coordinate in a big component.
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std::pair<PhantomNode, PhantomNode>
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NearestPhantomNodeWithAlternativeFromBigComponent(const util::Coordinate input_coordinate)
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{
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bool has_small_component = false;
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bool has_big_component = false;
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auto results =
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rtree.Nearest(input_coordinate,
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[&has_big_component, &has_small_component](const EdgeData &data)
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{
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auto use_segment = (!has_small_component ||
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(!has_big_component && !data.component.is_tiny));
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auto use_directions = std::make_pair(use_segment, use_segment);
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has_big_component = has_big_component || !data.component.is_tiny;
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has_small_component = has_small_component || data.component.is_tiny;
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return use_directions;
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},
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[&has_big_component](const std::size_t num_results, const double)
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{
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return num_results > 0 && has_big_component;
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});
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if (results.size() == 0)
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{
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return std::make_pair(PhantomNode{}, PhantomNode{});
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}
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BOOST_ASSERT(results.size() == 1 || results.size() == 2);
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return std::make_pair(MakePhantomNode(input_coordinate, results.front()).phantom_node,
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MakePhantomNode(input_coordinate, results.back()).phantom_node);
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}
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// Returns the nearest phantom node. If this phantom node is not from a big component
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// a second phantom node is return that is the nearest coordinate in a big component.
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std::pair<PhantomNode, PhantomNode> NearestPhantomNodeWithAlternativeFromBigComponent(
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const util::Coordinate input_coordinate, const int bearing, const int bearing_range)
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{
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bool has_small_component = false;
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bool has_big_component = false;
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auto results = rtree.Nearest(
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input_coordinate,
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[this, bearing, bearing_range, &has_big_component,
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&has_small_component](const EdgeData &data)
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{
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auto use_segment =
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(!has_small_component || (!has_big_component && !data.component.is_tiny));
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auto use_directions = std::make_pair(use_segment, use_segment);
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if (use_segment)
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{
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use_directions = checkSegmentBearing(data, bearing, bearing_range);
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if (use_directions.first || use_directions.second)
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{
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has_big_component = has_big_component || !data.component.is_tiny;
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has_small_component = has_small_component || data.component.is_tiny;
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}
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}
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return use_directions;
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},
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[&has_big_component](const std::size_t num_results, const double)
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{
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return num_results > 0 && has_big_component;
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});
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if (results.size() == 0)
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{
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return std::make_pair(PhantomNode{}, PhantomNode{});
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}
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BOOST_ASSERT(results.size() > 0);
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return std::make_pair(MakePhantomNode(input_coordinate, results.front()).phantom_node,
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MakePhantomNode(input_coordinate, results.back()).phantom_node);
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}
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// Returns the nearest phantom node. If this phantom node is not from a big component
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// a second phantom node is return that is the nearest coordinate in a big component.
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std::pair<PhantomNode, PhantomNode>
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NearestPhantomNodeWithAlternativeFromBigComponent(const util::Coordinate input_coordinate,
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const double max_distance,
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const int bearing,
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const int bearing_range)
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{
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bool has_small_component = false;
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bool has_big_component = false;
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auto results = rtree.Nearest(
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input_coordinate,
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[this, bearing, bearing_range, &has_big_component,
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&has_small_component](const EdgeData &data)
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{
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auto use_segment =
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(!has_small_component || (!has_big_component && !data.component.is_tiny));
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auto use_directions = std::make_pair(use_segment, use_segment);
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if (use_segment)
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{
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use_directions = checkSegmentBearing(data, bearing, bearing_range);
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if (use_directions.first || use_directions.second)
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{
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has_big_component = has_big_component || !data.component.is_tiny;
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has_small_component = has_small_component || data.component.is_tiny;
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}
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}
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return use_directions;
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},
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[&has_big_component, max_distance](const std::size_t num_results, const double min_dist)
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{
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return (num_results > 0 && has_big_component) || min_dist > max_distance;
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});
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if (results.size() == 0)
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{
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return std::make_pair(PhantomNode{}, PhantomNode{});
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}
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BOOST_ASSERT(results.size() > 0);
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return std::make_pair(MakePhantomNode(input_coordinate, results.front()).phantom_node,
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MakePhantomNode(input_coordinate, results.back()).phantom_node);
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}
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private:
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std::vector<PhantomNodeWithDistance>
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MakePhantomNodes(const util::Coordinate input_coordinate,
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const std::vector<EdgeData> &results) const
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{
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std::vector<PhantomNodeWithDistance> distance_and_phantoms(results.size());
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std::transform(results.begin(), results.end(), distance_and_phantoms.begin(),
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[this, &input_coordinate](const EdgeData &data)
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{
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return MakePhantomNode(input_coordinate, data);
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});
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return distance_and_phantoms;
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}
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PhantomNodeWithDistance MakePhantomNode(const util::Coordinate input_coordinate,
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const EdgeData &data) const
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{
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util::Coordinate point_on_segment;
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double ratio;
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const auto current_perpendicular_distance =
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util::coordinate_calculation::perpendicularDistance(
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coordinates->at(data.u), coordinates->at(data.v), input_coordinate,
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point_on_segment, ratio);
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// Find the node-based-edge that this belongs to, and directly
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// calculate the forward_weight, forward_offset, reverse_weight, reverse_offset
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int forward_offset = 0, forward_weight = 0;
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int reverse_offset = 0, reverse_weight = 0;
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if (data.forward_packed_geometry_id != SPECIAL_EDGEID)
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{
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std::vector<EdgeWeight> forward_weight_vector;
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datafacade.GetUncompressedWeights(data.forward_packed_geometry_id,
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forward_weight_vector);
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for (std::size_t i = 0; i < data.fwd_segment_position; i++)
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{
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forward_offset += forward_weight_vector[i];
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}
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forward_weight = forward_weight_vector[data.fwd_segment_position];
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}
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if (data.reverse_packed_geometry_id != SPECIAL_EDGEID)
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{
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std::vector<EdgeWeight> reverse_weight_vector;
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datafacade.GetUncompressedWeights(data.reverse_packed_geometry_id,
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reverse_weight_vector);
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BOOST_ASSERT(data.fwd_segment_position < reverse_weight_vector.size());
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for (std::size_t i = 0;
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i < reverse_weight_vector.size() - data.fwd_segment_position - 1; i++)
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{
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reverse_offset += reverse_weight_vector[i];
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}
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reverse_weight =
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reverse_weight_vector[reverse_weight_vector.size() - data.fwd_segment_position - 1];
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}
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ratio = std::min(1.0, std::max(0.0, ratio));
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if (data.forward_segment_id.id != SPECIAL_SEGMENTID)
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{
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forward_weight *= ratio;
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}
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if (data.reverse_segment_id.id != SPECIAL_SEGMENTID)
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{
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reverse_weight *= 1.0 - ratio;
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}
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auto transformed = PhantomNodeWithDistance{PhantomNode{data, forward_weight, forward_offset,
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reverse_weight, reverse_offset,
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point_on_segment, input_coordinate},
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current_perpendicular_distance};
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return transformed;
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}
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std::pair<bool, bool> checkSegmentBearing(const EdgeData &segment,
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const int filter_bearing,
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const int filter_bearing_range)
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{
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BOOST_ASSERT(segment.forward_segment_id.id != SPECIAL_SEGMENTID || !segment.forward_segment_id.enabled);
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BOOST_ASSERT(segment.reverse_segment_id.id != SPECIAL_SEGMENTID || !segment.reverse_segment_id.enabled);
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const double forward_edge_bearing = util::coordinate_calculation::bearing(
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coordinates->at(segment.u), coordinates->at(segment.v));
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const double backward_edge_bearing = (forward_edge_bearing + 180) > 360
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? (forward_edge_bearing - 180)
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: (forward_edge_bearing + 180);
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const bool forward_bearing_valid =
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util::bearing::CheckInBounds(std::round(forward_edge_bearing), filter_bearing,
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filter_bearing_range) &&
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segment.forward_segment_id.enabled;
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const bool backward_bearing_valid =
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util::bearing::CheckInBounds(std::round(backward_edge_bearing), filter_bearing,
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filter_bearing_range) &&
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segment.reverse_segment_id.enabled;
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return std::make_pair(forward_bearing_valid, backward_bearing_valid);
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}
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RTreeT &rtree;
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const std::shared_ptr<CoordinateList> coordinates;
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DataFacadeT &datafacade;
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};
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}
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}
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#endif
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