On the left, simple example of a composite extrude of two profile curves –
circle and square – along a rail curve with scaling and rotation of the
extrusion along the curve. Compared to xsi curve extrude to the right.
Note the following
· Even step sizes along the rail and profile
curve. But, segments always hit the knots. That is, sharp corners on the curve
still get you sharp corners on the resulting mesh
· No flipping at inflection points
· Correct mitring at corners (see red outline
on right example; you don't get this).
· You can add, remove and re-order shape
curves on the fly.
In general I'm getting much better meshes than I can get from the built in
extrude tool.

