Class: GeographicProjection

GeographicProjection

new GeographicProjection(ellipsoidopt)

A simple map projection where longitude and latitude are linearly mapped to X and Y by multiplying them by the Ellipsoid#maximumRadius. This projection is commonly known as geographic, equirectangular, equidistant cylindrical, or plate carrée. It is also known as EPSG:4326.
Parameters:
Name Type Attributes Default Description
ellipsoid Ellipsoid <optional>
 Ellipsoid.WGS84 The ellipsoid.
Source:
See:

Members

(readonly) ellipsoid :Ellipsoid

Gets the Ellipsoid.
Type:
Source:

Methods

project(cartographic, resultopt) → {Cartesian3}

Projects a set of Cartographic coordinates, in radians, to map coordinates, in meters. X and Y are the longitude and latitude, respectively, multiplied by the maximum radius of the ellipsoid. Z is the unmodified height.
Parameters:
Name Type Attributes Description
cartographic Cartographic The coordinates to project.
result Cartesian3 <optional>
 An instance into which to copy the result. If this parameter is undefined, a new instance is created and returned.
Source:
Returns:
The projected coordinates. If the result parameter is not undefined, the coordinates are copied there and that instance is returned. Otherwise, a new instance is created and returned.
Type
Cartesian3

unproject(cartesian, resultopt) → {Cartographic}

Unprojects a set of projected Cartesian3 coordinates, in meters, to Cartographic coordinates, in radians. Longitude and Latitude are the X and Y coordinates, respectively, divided by the maximum radius of the ellipsoid. Height is the unmodified Z coordinate.
Parameters:
Name Type Attributes Description
cartesian Cartesian3 The Cartesian position to unproject with height (z) in meters.
result Cartographic <optional>
 An instance into which to copy the result. If this parameter is undefined, a new instance is created and returned.
Source:
Returns:
The unprojected coordinates. If the result parameter is not undefined, the coordinates are copied there and that instance is returned. Otherwise, a new instance is created and returned.
Type
Cartographic