olp::geo::WebMercatorProjection Class Reference

The Web Mercator projection. More...

#include <WebMercatorProjection.h>

Inheritance diagram for olp::geo::WebMercatorProjection:

Collaboration diagram for olp::geo::WebMercatorProjection:

Public Member Functions
GeoRectangle	GetGeoBounds () const override
	Gets the geodetic bounds represented by the projection. More...
WorldAlignedBox	WorldExtent (double minimum_altitude, double maximum_altitude) const override
	Creates the extent of world coordinates. More...
bool	Project (const GeoCoordinates3d &geo_point, WorldCoordinates &world_point) const override
	Checks whether the geographic coordinates (latitude, longitude, altitude) of a point correspond to its world coordinates (x,y,z). More...
bool	Unproject (const WorldCoordinates &world_point, GeoCoordinates3d &geo_point) const override
	Checks whether the world coordinates (x,y,z) of a point correspond to its geographic coordinates (latitude, longitude, altitude). More...

Detailed Description

The Web Mercator projection.

The world and geographic coordinates are related in the following way:

• Latitude between -MaximumLatitude() and MaximumLatitude() maps to the Y world axis of the following range: [0, EarthConstants::EquatorialCircumference()].
• Longitude between -180 and 180 maps to the X world axis of the following range: [0, EarthConstants::EquatorialCircumference()].
• Altitude maps to the Z world axis and is not scaled.

Member Function Documentation

GetGeoBounds()

GeoRectangle olp::geo::WebMercatorProjection::GetGeoBounds ( ) const

overridevirtual

Gets the geodetic bounds represented by the projection.

Returns

The geodetic rectangle.

Implements olp::geo::IProjection.

Project()

bool olp::geo::WebMercatorProjection::Project ( const GeoCoordinates3d &  geo_point, WorldCoordinates &  world_point  ) const

overridevirtual

Checks whether the geographic coordinates (latitude, longitude, altitude) of a point correspond to its world coordinates (x,y,z).

Parameters

geo_point	The point position in geographic coordinates.
world_point	The point position in world coordinates.

Returns

True if the coordinates correspond; false otherwise.

Implements olp::geo::IProjection.

Unproject()

bool olp::geo::WebMercatorProjection::Unproject ( const WorldCoordinates &  world_point, GeoCoordinates3d &  geo_point  ) const

overridevirtual

Checks whether the world coordinates (x,y,z) of a point correspond to its geographic coordinates (latitude, longitude, altitude).

Parameters

world_point	The position in world coordinates.
geo_point	The position in geographic coordinates.

Returns

True if the coordinates correspond; false otherwise.

Implements olp::geo::IProjection.

WorldExtent()

WorldAlignedBox olp::geo::WebMercatorProjection::WorldExtent ( double  minimum_altitude, double  maximum_altitude  ) const

overridevirtual

Creates the extent of world coordinates.

Parameters

minimum_altitude	The minimum altitude in meters.
maximum_altitude	The maximum altitude in meters.

Returns

The extent of world coordinates.

Implements olp::geo::IProjection.

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The documentation for this class was generated from the following file:

• olp-cpp-sdk-core/include/olp/core/geo/projection/WebMercatorProjection.h