Spiral

SPIRAL name, radius, R1, R2, turns, pitch

Creates a spiral shape. The spiral axis is along the +Z axis. The spiral "wire" has a circular cross section of radial size "radius". The radius of the windings from the Z axis to the center of the wire is given by R1 at the beginning of the spiral and by R2 at the end of the spiral. The turns value is the number of full windings, and need not be an integer. The pitch value is the change in Z coordinate per turn. The radius parameter should be no larger than one third of the smaller of R1 and R2.

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• Torus