Measure length between points along curve?

Hi GH community,

I've created a few profile circles offset from a curve and I want to scale the profiles based on their distances of each circle's centre from an attractor point which slides along the afore mentioned curve. [see pic]

I'm trying to generate the <scale> factor based on the lengths along the curve but am having trouble doing something as simple as this?

Hope you can help, thanks in advance!

Cheers,

GH Newbie

Tags: along curve, length, points

▶ Reply to This

Replies to This Discussion

Permalink Reply by Systemiq on August 11, 2011 at 12:37pm

You can try using the Sub Curve and measuring its length :

(closed curves will need more work)

Attachments:

lengthCrvAtrr.gh, 4 KB

▶ Reply

Permalink Reply by sphoon on August 11, 2011 at 12:52pm

Thanks for the help! Unfortunately, my version of gh won't open your file... could I get a snapshot of it instead?

▶ Reply

Permalink Reply by Systemiq on August 11, 2011 at 1:06pm

When the attractor point is exactly on one of the points generating the profiles, the length will be null instead of 0 (because the subcurve is null). You can fix that using the Null component to filter those.