CubeProj

Extends: Proj

Source: cube.ts:111

Projection of a cube inflated to the ellipsoid. Native coordinates of a point: lon is the face index plus the position from west to east, lat is the position from south to north, both positions are from 0 to 1.

Constructor

new CubeProj(code: string, equiangular: boolean): CubeProj

Parameters

code (string) — Projection code.
equiangular (boolean) — True when equal steps on a face are equal angles, false when they are equal distances on the plane of the face, as in a common cube map.

Instance Methods

`toPlane(position: number): number`

cube.ts:130

Returns the coordinate on the plane of a face, from -1 to 1, of the position on it, from 0 to 1.

Parameters

position (number) — Position on the face.

Returns

number

`fromPlane(coordinate: number): number`

cube.ts:141

Returns the position on a face, from 0 to 1, of the coordinate on its plane, from -1 to 1. It goes on beyond the face for a coordinate beyond it.

Parameters

coordinate (number) — Coordinate on the face plane.

Returns

number

`toLonLat(lon: number, lat: number, face?: number): LonLat`

cube.ts:155

Returns the geodetic coordinates of the point on the cube. The direction of the cube point is the surface normal of the ellipsoid in it.

Parameters

lon (number) — Native longitude.
lat (number) — Native latitude.
face (number, optional) — Face index, it is needed on the east edge of a face: the longitude is the next face there.

Returns