Unroll curves?

Rhino Rhino for Windows
1

Hey guys,
I was wondering if there was a way to unroll curves the same way that you can unroll a surface?

2

Isn’t an unrolled curve just a straight line with the same length?

3

Not necessarily straight. Think of a series of curves on a curved surface, kinda like unrolling a line drawing logo from a Coke can.

4

If you have the surface and the curves you can use the CreateUVCrv command.

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5

Close! The curves just aren’t part of the surface, they are projected onto it and need to be unrolled along with the surface.

6

Is this command what are you looking for?
http://docs.mcneel.com/rhino/5/help/en-us/index.htm#commands/unrollsrf.htm?Highlight=unroll

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7

CreateUVCrv should do that as wim suggested. It depends on what kind of surface it’s drawn on as to whether it’s accurate…

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8

UnrollSrf (see link in Nosorozec’s post above) unrolls curves on a surface which is unrolled. The surface has to capable of being unrolled, ie developable.

  • UnrollSrf
  • select surfaces to be unrolled
  • Enter
  • select curves to be unrolled
  • Enter
  • Delete the unrolled surface if you don’t want it

Or do you want to flatten curves on a non-developable surface?

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