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Summarizing: I have a spline on the ground that is instancing other vertical splines ('poles'), then I'm copying the ground spline and sampling each point to a different pole driven by a factor. This factor decides where the created spline's points will be along the poles.

My question is: Is there how to create several ground curves and put each of them in a different factor.

In case it doesn't or it's too complicated, will that be possible when the 'repeat zone' launches in Blender 4.0?

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  • $\begingroup$ Welcome. Please use a title that matches the content of the question. It should be descriptive but succinct, unique and identifying, summarizing the issue in such way that anyone searching for a similar problem may easily find it. Use the edit link above, remove anything superfluous, avoid words like "this","issue with" or "question about". Remember, your title is the first thing potential visitors will see, answers you get depend heavily on how inviting it is. See "What is the problem of asking “How do I do this?" $\endgroup$ Commented Aug 27, 2023 at 9:34
  • $\begingroup$ Sorry.... sure! $\endgroup$ Commented Aug 27, 2023 at 9:42

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X problem: yes, that's what Curve index is for:

Y problem: you can loft the pole-curves to 'fill' it with another geometry, if that another geometry has already correct topology. Here calculating that topology is trivial, it's a simple grid. You can delete vertical lines of that grid, which won't affect horizontal edges and vertex indices. You could just spawn a horizontal curve and use duplicate elements node to accomplish the same with less nodes, but I wanted to show how you can wrap anything around those poles. The pole-curves can also be modified prior…

Sample Curve workflow

Back to the X problem if you really need to do it this way, I tried to rationalize it by using bezier curves with auto handles:

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  • $\begingroup$ Thanks! But, the reason why I want the 'sample curve' is to slide the horizontal bars in a different rate each, based on their index number, so e.g. if there is 10 bars the last one dislocates 1/10th in relation to the 1st one (or the top most one) through the pole's lenght. $\endgroup$ Commented Aug 27, 2023 at 15:10
  • $\begingroup$ @AAAYerus either move the points of poles, based on some algorithm, e.g. use a map range, from min 0, from max 1, pass z coordinate as value, and modify to min and to max based on fields… Or when you sample the curve in the option #2, code in some logic (I don't know, e.g. pass the factor of current curve to math: sine), and use that as the sampled factor instead. $\endgroup$ Commented Aug 27, 2023 at 15:26
  • $\begingroup$ That's exactly what I'm asking. =p I need a way of almost precisely position it with a syncronized distribution, almost like a curtain but vertically. $\endgroup$ Commented Aug 27, 2023 at 23:25
  • $\begingroup$ Will we be able to do this by 'repeat zone'? $\endgroup$ Commented Aug 28, 2023 at 2:53
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    $\begingroup$ @AAAYerus here's an example on how you'd apply a sine to the heights of the wires: i.imgur.com/tKrlEvX.png i.imgur.com/HdWomn4.png $\endgroup$ Commented Aug 28, 2023 at 7:30
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I did it! It something like that. Still have to fine tune it. I did something similar with a blind a while ago, had to remember the path and adapt a bit. It's not quite there yet, but it's good to see it working! Thanks for your time, I really appreciate it!

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There: better yet! Thats exactly what I wanted, only missing a map range or something like that to put the 'bottom' and 'top value' always between 0-1.

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