MapProjection

abstract new Cesium.MapProjection()
Core/MapProjection.js 14

Defines how geodetic ellipsoid coordinates (Cartographic) project to a flat map like Cesium's 2D and Columbus View modes.
See:

Members

readonly ellipsoid : Ellipsoid
Core/MapProjection.js 27

Gets the Ellipsoid.

Methods

project(cartographic, result) → Cartesian3
Core/MapProjection.js 45

Projects Cartographic coordinates, in radians, to projection-specific map coordinates, in meters.
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.

unproject(cartesian, result) → Cartographic
Core/MapProjection.js 61

Unprojects projection-specific map Cartesian3 coordinates, in meters, to Cartographic coordinates, in radians.
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.