Unfold a polyline

Does anyone have/know of a routine/method to unfold a polyline
comprising both straight and curved segments?
Any help appreciated.
Cheers
Reply to
strawberry
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Are you talking about flat patterns?
Bob
Reply to
sycochkn
I sure wish there was one, it would make development of 3d objects into flat patterns for cutting very easy. Id be very interested to know if you find a way of doing this, but Ive never seen or heard of it
Shaun
Reply to
Shaun Van Poecke
I've seen things for unwraping solids for pattern cutting - and some of them are very good. In a way, my problem is simpler. I just want to produce a straight line of the same overall length as my polyline, and - crucially - with 'endpoints' in the same relative positions along the line. This can be done manually, by exploding the line and then listing the length of each segment - whether straight or curved, but that's going to be a little tedious for this particular polyline!
Perhaps the solution is to try making a surface from the line and then browse around for some pattern forming software - I'll give that a go.
Once again, any other thoughts appreciated.
Reply to
strawberry
Um... LIST the polyline to get its "perimeter" and then simply draw a line of that length? Although I'm not sure what you mean by "keeping the endpoints in the same relagive positions..."
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Reply to
Paul Turvill
I'm pretty sure preservation of segment length is what's meant...
Reply to
Michael Bulatovich
That's right. I believe they're referred to as endpoints in the osnap settings.
Reply to
strawberry
Yes, that's right - the end vertices of segments are referred to as 'endpoints' in the osnap settings.
Reply to
strawberry
People trying to cut material seem to want this kind of routine....I'd be surprised if one doesn't exist...it wouldn't be that hard to write... IOW: even I could do it ; )
Reply to
Michael Bulatovich
It's exactly that kind of thinking that prompted me to write to the NG in the first place ;-)
Reply to
strawberry

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