A polar controller takes user-input to specify the creation of graphic shapes. An interface of the polar controller receives from a user a start angle, a stop angle, a step angle and a radius length for the graphic shape. A polar execution engine of the polar controller generates the graphic shape based...http://www.google.de/patents/US6128024?utm_source=gb-gplus-sharePatent US6128024 - Polar controller for defining and generating spiral-like shapes
