Move Points along a curve

hi everybody!

i have got a pseudo-circunference, wich is an intersection between a sphere and a generic surface.

Then, i divided the pseudo-circ. into 6 equal parts with the component DivideByDistance.

Then i made the lines from the 6 points to the centre of the pseudo-circ. and from one of these lines i created a plane perpendicular to it.

the question is:

can i move the 6 points along the pseudo-circ. without changing the distance between them?

thanks in advance :)

Replies to This Discussion

Permalink Reply by Andrea Ciurnella on December 28, 2015 at 9:37am

i think i resolved it.

from the dividedistance i took the parameters of division (t)

then make an addiction of these parameters with a slider, then shattered the curve with the resulting values. Then selected the end points of each segment, cull the duplicates points and in the end created the lines between the points and the centre.

Permalink Reply by David Rutten on December 28, 2015 at 9:39am

I'd recommend using just the regular Divide component. There's no way to divide a curve into N equal segments using DivideDistance, unless the curve is a perfect line or circle.

You can adjust the seam of a closed curve prior to division, which should allow you to 'rotate' your points around the pseudo-circle.

Permalink Reply by David Rutten on December 28, 2015 at 9:42am

Attachments:

seam.gh, 5 KB

Permalink Reply by Andrea Ciurnella on December 28, 2015 at 10:04am

i will give a look at it, thanks a lot for answering!! however my solution is working too!

Permalink Reply by Joseph Oster on December 28, 2015 at 10:47am

But your method can fail by moving the points (in green) beyond the end of the curve. Adjusting the 'Seam' doesn't do that.

Attachments:

seam_2015Dec28a.gh, 15 KB

Permalink Reply by Joseph Oster on December 28, 2015 at 9:59am

"pseudo-circunference"? "generic surface"?

"6 equal parts with the component DivideByDistance" - not likely, as David has pointed out. 'Divide' curve, yes (equal parts), but 'DivDist', only in special cases.

"make an addiction of these parameters"? GH can be addicting, that's true. :)

The 'Seam' component David mentions is new to me (COOL!) and probably answers your question... but what you are asking will always be much clearer if you post your GH code and a screen shot or two.

Permalink Reply by Andrea Ciurnella on December 28, 2015 at 10:09am

this is the solution i get!