Minimal path definition (kangaroo issue)

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Permalink Reply by Nik Willmore on February 14, 2016 at 12:09pm

Line springs just too stiff.

So it takes line springs and attracts them to each other by adding points along each line that are mutually attracted to each other.

The Exponents of the attraction should also have some real influence.

-1 or -2 makes them unstable, so I'll add Damping to the line springs too. Nope, raising damping made lines blow up, oddly enough. A real power law instead of inverse power law has real effect though with Exponents set above 0, but it wacks out by 4:

Oh I see, if a line is too long, it can only bend, so it gets pinched into S forms instead of following along the others. I see it clearest in Exponents 3 above, on the left.

Actually I'm wrong, for if I up the Cutoff, I get:

So what's causing all the disorder in the previous cases? What's Cutoff really doing?

Replacing your Boolean toggle switch on Kangaroo with a Button is important since the result depends on the starting movement and must thus be reset each time you change a parameter.

Have fun and perhaps post some results.

Attachments:

• minimalpath B.gh, 27 KB

Permalink Reply by Lina Marine on February 14, 2016 at 9:02pm

Thank's a lot!

I found an other definition that works better!

I try to get a result that looks like the image below

Attachments:

• Wool_Threads.gh, 16 KB

Permalink Reply by Nik Willmore on February 15, 2016 at 10:18am

You have an older version of Grasshopper and perhaps Kangaroo too, likely worth updating as you try others' scripts:

So you added a controlled bending resistance instead of just spring stiffness: