Sweeping along two arcs of different lengths

[stuartkemp]

Hi all,

 

I have two arcs of different lengths and I'm trying to sweep a profile along them, but when I sweep along the outer arc the sweep does not conform to the length of the inner arc (and vice versa, as expected). A little tough to explain in words but the screenshots below explain it better I hope.

 

I know it's possible to create this numerous other ways but basically I'm wondering if anyone has a way to do this in such a way that if I extend either arc, the sweep will update automatically. Much like the sweep modifier, just along both arcs.

 

Apologies if a bit vague, it's difficult to explain.

 

Thanks in advance.

 

The two arcs:

 

With sweep... yellow dots show where I need it to end:

 

Sweep profile:

[Stephen Thomas]

I think it's to do with the bezier handles at the end of the curve. If possible try and have the curve extend a bit beyond where you want it to end then delete the areas you don't require afterwards i.e. if part of a circle, apply sweep to the circle then add vertices where required, add edit poly and delete extra faces, cap ends.

 

Not sure about your second point.

Edited March 9, 2015 by stef.thomas