The flat outline to extrude.
How far the outline is swept along Z, in model units.
How many extra copies of the outline are inserted along the way; more keeps a twist or taper smooth.
How far the top is turned against the bottom, in degrees.
How much the top is scaled along X; 1 keeps it, 0 with scaleTopY at 0 makes a cone.
How much the top is scaled along Y; 1 keeps it, 0 with scaleTopX at 0 makes a cone.
When true, the solid is centered on the XY plane; when false it stands on it.
A cross-section and the sweep settings for
crossSection.operations.extrude, which grows it along Z into a solid.