Optional
lineIndicates the end of a line or ring. Within a polygon, indicates the end of a ring. Unlike GeoJSON, the redundant closing coordinate of a ring is not indicated via point, and instead is implied via lineEnd within a polygon.
Optional
lineIndicates the start of a line or ring. Within a polygon, indicates the start of a ring. The first ring of a polygon is the exterior ring, and is typically clockwise. Any subsequent rings indicate holes in the polygon, and are typically counterclockwise.
Optional
pointIndicates a point with the specified coordinates x and y (and optionally z). The coordinate system is unspecified and implementation-dependent; for example, projection streams require spherical coordinates in degrees as input. Outside the context of a polygon or line, a point indicates a point geometry object (Point or MultiPoint). Within a line or polygon ring, the point indicates a control point.
x-coordinate of point.
y-coordinate of point.
Optional
z: numberOptional z-coordinate of point.
Optional
polygonIndicates the end of a polygon.
Optional
polygonIndicates the start of a polygon. The first line of a polygon indicates the exterior ring, and any subsequent lines indicate interior holes.
Optional
sphereIndicates the sphere (the globe; the unit sphere centered at ⟨0,0,0⟩).
A Prototype interface which serves as a template for the implementation of a geometric transform using geoTransform(...) It serves as a reference for the custom methods which can be passed into geoTransform as argument to crete a generalized transform projection.