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#pragma once
#include "geometry/point2d.hpp"
#include "osrm2feature_map.hpp"
#include "osrm_data_facade.hpp"
#include "osrm_engine.hpp"
#include "routing_mapping.hpp"
#include "indexer/index.hpp"
namespace routing
{
namespace helpers
{
/// A helper class that prepares structures for OSRM by a geometry near a point.
class Point2PhantomNode
{
public:
Point2PhantomNode(RoutingMapping const & mapping, Index const & index,
m2::PointD const & direction)
: m_direction(direction), m_index(index), m_routingMapping(mapping)
{
}
struct Candidate
{
// Square distance from point to geometry in meters.
double m_dist;
uint32_t m_segIdx;
uint32_t m_fid;
m2::PointD m_point;
Candidate() : m_dist(numeric_limits<double>::max()),
m_segIdx(numeric_limits<uint32_t>::max()), m_fid(kInvalidFid)
{}
};
// Finds nearest segment to a feature geometry.
static void FindNearestSegment(FeatureType const & ft, m2::PointD const & point, Candidate & res,
size_t startIdx = 0, size_t stopIdx = numeric_limits<size_t>::max());
// Sets point from where weights are calculated.
void SetPoint(m2::PointD const & pt) { m_point = pt; }
// Returns true if there are candidate features for routing tasks.
bool HasCandidates() const { return !m_candidates.empty(); }
// Functor, for getting features from a index foreach method.
void operator()(FeatureType const & ft);
/// Makes OSRM tasks result vector.
void MakeResult(vector<FeatureGraphNode> & res, size_t maxCount);
private:
// Calculates distance in meters on the feature from startPoint to endPoint.
double CalculateDistance(FeatureType const & feature, size_t const startPoint,
size_t const endPoint) const;
/// Calculates part of a node weight in the OSRM format. Projection point @segPt divides node on
/// two parts. So we find weight of a part, set by the @calcFromRight parameter.
void CalculateWeight(OsrmMappingTypes::FtSeg const & seg, m2::PointD const & segPt,
NodeID const & nodeId, int & weight, int & offset) const;
/// Returns minimal weight of the node.
EdgeWeight GetMinNodeWeight(NodeID node, m2::PointD const & point) const;
/// Calculates weights and offsets section of the routing tasks.
void CalculateWeights(FeatureGraphNode & node) const;
m2::PointD m_point;
m2::PointD const m_direction;
buffer_vector<Candidate, 128> m_candidates;
Index const & m_index;
RoutingMapping const & m_routingMapping;
DISALLOW_COPY(Point2PhantomNode);
};
/// Class-getter for finding OSRM nodes near geometry point.
class Point2Node
{
RoutingMapping const & m_routingMapping;
vector<NodeID> & m_nodeIds;
public:
Point2Node(RoutingMapping const & routingMapping, vector<NodeID> & nodeID)
: m_routingMapping(routingMapping), m_nodeIds(nodeID)
{
}
// Functor, for getting features from a index foreach method.
void operator()(FeatureType const & ft);
DISALLOW_COPY_AND_MOVE(Point2Node);
};
} // namespace helpers
} // namespace routing
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