This shader generates a polygonal torus lying on the XY plane, centered at the origin. The torus is defined by two circles:
the smaller one revolves around the center of the larger circle.
Name
The name of the shader node displayed in the render tree. Enter any name you like, or leave the default.
radius
The radius of the large circle.
thickness
The radius of the small circle.
uSpans/vSpans
Specifies the number of subdivisions in each parametric range.
If omitted (set to 0), parameters default to the following values: radius 2.0, thickness 1.0, uSpans 32, vSpans 32.