Problem with Style’s Curve on Surface

[HelterSkelter]

http://img272.imageshack.us/img272/2841/cosproblem3mh.gif

Hi,

Ive created a surface outside style, it's highlighted in red in the above pic. The surface is a single surface but because the left boundary curve of the surface is composed of two staight curves with a (single) radius curve in the middle I'm having problems.

I'd like to create a single COS between the top left surface corner and datum point 24. However, I cant to create a COS which crosses the boundaries of the "sub surface" segments. As you can see I've tried a very crude workaround by creating further datum points (22 & 23) and then creating one COS per surface subsegment.

However this obviously doesnt achieve what I set out to do becauce I dont know the correct positions for 22 and 23, a priori. I have tried to chain the 3 sub curves of the left surface boundary curve together prior to creating the surface but cant get this to work

How can I achieve a single COS as I originally intended?

TIA


Edited by: HelterSkelter

 

[caddie]

Method you are using is themethod available, as long asthe surface is divided. Options available to you:


1 - Create the left boundry curve segments as a composite *Approximate', it will give you a curvature continous curve and the surface will not be divided into segments.


2 - Project a curve?


/Caddie