Verticals through mulitple ellipses

Hi there.

I'm have created a som horizontal ellipses and picked out one of them.

The i have used the 'PFrames' component to divided the choosen ellipse in 'n'-points.

I would like the to find the points on all the horizontal ellipses where the planes intersect them. But because each plane cuts each ellipse twice and I only want the first point I have tried to create a Cull Pattern that chooses the first points.

The cull pattern works if I only do it with the choosen ellipse, but not if I try to do it with all the ellipses.

The first picture is where I do it with only the chosen ellipse and the second is where I try with all the ellipses.

Replies to This Discussion

Permalink Reply by Vongsawat Wongkijjalerd on February 24, 2017 at 3:51am

without the file, I'm guessing just graft the PFrames output.

Permalink Reply by Troels Meldgaard Jensen on February 24, 2017 at 5:04am

Thanks.

Sry for being a retard

Permalink Reply by Troels Meldgaard Jensen on February 24, 2017 at 5:39am

If I then want to connect the points vertically from the top ellipse to the bottom, without the curve to continue inside the ellipses. So i just want curves vertically along the ellipses.

Permalink Reply by Vongsawat Wongkijjalerd on February 24, 2017 at 8:36am

super difficult trying to guess what is going on without the file again..

but most probably, don't Flatten!
The data coming out of PCX should already be grouped according to planes. Which I'm guessing you just need to Split List (dont flatten!) then IntCrv.

Permalink Reply by Troels Meldgaard Jensen on February 27, 2017 at 4:16am

I'm sending the file now :)

It seems like my cull pattern is not bullied proof, so i deleted that.

I want to create a number of vertical curves along the horizontal ellipses from top to bottom.

So im trying to create 'Pframes' for the top ellipse and then a point on every horizontal ellipses where these 'Pframes' intersect with the 'Pframes'. Those point should define the vertical curves. But i only want 1 intersect point for each 'Pframes'.

Thank you very much for all your help!

Attachments:

Udvidet Basis model 3.0.gh, 18 KB

Permalink Reply by Vongsawat Wongkijjalerd on February 28, 2017 at 12:24am

PCX generates two sets of intersection points, cull them by checking where they are according to the PFrames. The PFrame is realigned slightly as the start/end of the vertical curves are not on the same Z. and said uv value (on the plane) is truncated to whatever decimal place as Closest Plane is apparently slightly imprecise and was giving close-to-but-not-zero values.

Be aware that currently the bottom curve is missing half of its vertical connections, due to PFrames not intersecting the bottom-most curve. Either the bottom curve needs to change, or the vertical curves have to be less vertical I guess?

Attachments: