One layer generates the large circle with an EllipseOperator in the straightforward way, but uses only a LineVisualizer. It can be useful to convert the output polygon to a line via a GeometryConversionOperator.

The other layer uses only a PolygonVisualizer, and it uses a FunnelOperator reading from two parallel EllipseOperator instances that generates one half-circle each; in this way, each half-circle will cover less than half the world. Also, these two ellipse operators need a user-defined MaxRadialEdgeLength value, let us say 500 km. We have found that an oblique division between the half-circles works best, as in the configuration below.

One layer generates the large circle with an EllipseOperator in the straightforward way, but uses only a LineVisualizer. It can be useful to convert the output polygon to a line via a GeometryConversionOperator.

The other layer uses only a PolygonVisualizer, and it uses a FunnelOperator reading from two parallel EllipseOperator instances that generates one half-circle each; in this way, each half-circle will cover less than half the world. Also, these two ellipse operators need a user-defined maxRadialEdgeLength value, let us say 500 km. We have found that an oblique division between the half-circles works best, as in the configuration below.

One layer generates the large circle with an EllipseOperator in the straightforward way, but uses only a LineVisualizer. It can be useful to convert the output polygon to a line via a GeometryConversionOperator.

The other layer uses only a PolygonVisualizer, and it uses a FunnelOperator reading from two parallel EllipseOperator instances that generates one half-circle each; in this way, each half-circle will cover less than half the world. Also, these two ellipse operators need a user-defined maxRadialEdgeLength value, let us say 500 km. We have found that an oblique division between the half-circles works best, as in the configuration below.

One layer generates the large circle with an EllipseOperator in the straightforward way, but uses only a LineVisualizer. It can be useful to convert the output polygon to a line via a GeometryConversionOperator.

The other layer uses only a PolygonVisualizer, and it uses a FunnelOperator reading from two parallel EllipseOperator instances that generates one half-circle each; in this way, each half-circle will cover less than half the world. Also, these two ellipse operators need a user-defined maxRadialEdgeLength value, let us say 500 km. We have found that an oblique division between the half-circles works best, as in the configuration below.