Hi there,
I made a sparate curves (frames) from a double curved surface (ship hull). Unrolling that surface in one direction is not possible for me. Thats why i want to unroll those curves in a straight line with the preservation of the same curves length?

Unrolling a curve to a line is the equivalent of getting its length (Length command) and then drawing a line of the same length. Do you need to automate this process? Do the â€śunrolledâ€ť lines need to be placed somewhere in particular?

Yes, which is why I asked the other two questions - do you need the unrolled lines really, or just a list of lengths? If the second, in what form do you need the data - a text list, or attached to the curve and visible on the screenâ€¦?

Actually bothâ€¦but unrolling curves can help me moreâ€¦Also i need a list of separate lengths when I select a large numbers of curves not the total length of the all selected curves.

OK, so my question was - if you have hundreds of curves, how would you like to see the unroll results? Where should the resulting collection of lines go? How should they be related to the originals so you can see which is which? Many things are possible, but first it would be good to know what kind of result you expectâ€¦ --Mitch

The best case is to see the unrolling of all curves in one surface (2d) and they all starting from one side and unrolling to the another side. The starting point of all unrolled curves (the straight lines) will stays the starting point of the curves.