GeographicProjection

new GeographicProjection(ellipsoid)

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.

Name	Type	Default	Description
`ellipsoid`	Ellipsoid	`Ellipsoid.WGS84`	optional The ellipsoid.

See:

WebMercatorProjection

Source: Core/GeographicProjection.js, line 33

Members

readonlyellipsoid :Ellipsoid

Gets the Ellipsoid.

Source: Core/GeographicProjection.js, line 48

Methods

project(cartographic, result) → 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.

Name	Type	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.

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.

Source: Core/GeographicProjection.js, line 67

unproject(cartesian, result) → 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.

Name	Type	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.

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.