OptionalinnerInner radius of the annulus (r). Defaults to 0.5.
OptionalouterOuter radius of the annulus (R). Defaults to 1.
OptionalphiNumber of concentric subdivisions along width between inner and outer radius. Defaults to 1.
OptionalthetaCentral angle in radians (2π for full ring). Defaults to 2π.
OptionalthetaNumber of radial subdivisions around circumference. Defaults to 32.
OptionalthetaStart angle in radians. Defaults to 0.
Configuration options for annulus geometry (Kreisring / flat circular ring).