Creates a new projection.
Adds a new projection to the internal projections storage.
Gets the default or custom projection from the projection storage.
By default, you can get the following projections by their names.
- "mercator" — Mercator projection.
- "equirectangular" — Equirectangular projection.
- "lambert" — Lambert cylindrical projection.
- "miller" — Miller cylindrical projection.
To apply the projection, assign the returning object to the projection option of the widget.