Split a periodic curve at specific points

by Carlo Beltracchi

Feb 16, 2010

I know that it's a basic question, but I don't know how to split a periodic curve into 4 segments starting from 4 points.

If I use the shatter component , I obtain 5 segments: three of them are correct, but the other two are the segment from 0 to the value of the first division point, and from the value of the last division point to 0. Theese two segments have to be joined to be correct!

Is there a way to solve this basic problem?

Thank you!
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  • up

    Carlo Beltracchi

    Hi Luca,

    yeah, exactly, you've hit the nail on the head with your second answer!

    The shatter command starts splitting periodic curves in the "starting" point of the curve, and not in the first subdivision point fixed by parameter!

    I turn the question to David MT Rutten :)
    1

    Feb 16, 2010

    • up

      Andrew Heumann

      Here's a start that might be helpful: I have written a simple script to expose the "Change Closed Curve Seam" method in the SDK. (Note - curve is automatically reparameterized.) By setting the seam to one of your desired split points, you can then split at the remaining points with the shatter method.
      1

      Feb 1, 2011

      • up

        Gabe Krause

        We have some good solutions over here on an earlier post.

        http://www.grasshopper3d.com/forum/topics/can-i-change-the-start-po...

        Feb 2, 2011