Variable Distribution of Points along curves

Hello,

I am trying to distribute points along the length of a curve. I want to have a point at the beginning and end of the curve and I want to distribute points along the curve based on a sine wave or some other gradated form with a maximum distance of 36" and minimum of 16". I'm going to use these points to define the boundaries of a module that will conform to the shape and flex/stretch depending on the distance between points.

I've been banging my head against this for a few days now. Usually I come up with points distributed along a portion of the curve or 10000 points scattered all over without any discernable logic. Can anyone help me out?

I'll attach .gh file with what I have so far.

Attachments:

elliptical surface2.gh, 18 KB

Replies to This Discussion

Permalink Reply by Michael Pryor on June 26, 2014 at 4:29pm

try this out

Attachments:

divide curve min max.gh, 11 KB

Permalink Reply by Damon on June 27, 2014 at 6:56am

I modified Michael's definition a bit. Don't know if it's better, but it's another options.

Attachments:

dividecurveminmax_rev1.gh, 6 KB

Permalink Reply by Michael Pryor on June 27, 2014 at 8:11am

This is the way I would have done it normally by curve parameter (t) but he mentioned he wanted a "maximum distance of 36" and minimum of 16"" so That is why I used evaluate length and actual inches rather than t values.

Permalink Reply by Damon on June 27, 2014 at 10:24am

True! Missed that, sorry.

However, when I opened your definition it didn't spread the points out across the whole curve, just the beginning. I think it would have to be a repeating pattern--like a sine as Julian originally mentioned--to work.

Permalink Reply by Michael Pryor on June 27, 2014 at 10:52am

It is working fine. Because it is by actual lengths and not t param you need to accumulate enough points to reach the overall length. Just increase the amount of points on the series to more than the curve, the definition will cut it off before it goes longer than the curve.

Permalink Reply by Julian Menne on June 27, 2014 at 10:57am

Thanks Michael and Damon,

Both options work well for what we are trying to achieve. Michael's creates a helical effect with all of the off set curves, while Damon's creates points that are more stacked since each point is based on the parameter 't'.

Thanks a lot to both of you! I really just started using grasshopper this week. It can be a bit overwhelming. I appreciate the help.

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