Class SpatialMapDataSource

Inheritance Relationships

Derived Types

Class Documentation

class SpatialMapDataSource

This class is the interface for all sources of spatial map data.

Derive from this class if you’re writing a class that reads or calculates spatial map data. Most common implementations will likely be some form of elevation (but are not limited to elevations — e.g. Jamming Map). Each instance of this class should correspond to a single path or no path (e.g. constant undulation model).

Subclassed by navtk::geospatial::ElevationSource, navtk::geospatial::GeoidUndulationSource

Public Functions

virtual ~SpatialMapDataSource() = default
virtual std::pair<bool, double> lookup_datum(double latitude, double longitude) const = 0

Return a value from the map for a given location.

If no value is available, return a pair indicating the return value is invalid (i.e. {false, 0.0}).

Parameters

  • latitude – Latitude (radians) of the location being queried for a data value.

  • longitude – Longitude (radians) of the location being queried for a data value.

Returns

A pair showing whether a value was found (.first) and if true, the value in the type associated with the derived class (.second).