Loft Order Issue

Hey everyone-

Seemingly straightforward issue here but I can't seem to crack it. Any insight is appreciated. When I loft my ellipses together they loop onto themselves. I tried using the loft options parameter to turn off the close loft, but it seems like it's an a lofting order problem. I'm sure it's a pretty easy fix, but I just can't seem to figure it out. As always, your help is really appreciated.

(PS. Created in 0.8.0061)

Attachments:

Heights_28nov_newPoints.gh, 32 KB
HeightsModel28102011_v4.3dm, 1.3 MB

Replies to This Discussion

Permalink Reply by Evan Bauer on November 28, 2011 at 10:20pm

Permalink Reply by Brian Harms on November 28, 2011 at 10:24pm

You can sort the curves first based on some parameter (like x, y, or z coordinates, size, whatever) using the sort component. Input your curves into input "a" and your corresponding sorting parameter (keys) into input "k".

It should output the curves in order from smallest to largest parameter (I think). If it's backwards you can just reverse the list.

It's not always easy to find one parameter that works for all curves, but sometimes it is.

You can also just make sure you select the curves in the right order if you are setting multiple curves to a curve component (if you don't have too many curves).

Hope that helps.

Permalink Reply by Evan Bauer on November 28, 2011 at 10:29pm

i actually just realized the issue might be a bit more involved than expected. What I thought were closed loops of 'ribs' is actually one continuous spiral from the upper-left most ellipse to the farthest right most ellipse.

Permalink Reply by Brian Harms on November 28, 2011 at 10:33pm

Gotcha. I think I would break up the long list into subsets using domains that are created using series.

Does each "rib" have the same number of curves to loft?

Permalink Reply by Evan Bauer on November 28, 2011 at 10:33pm

ok, so in response to my own issues i sorted out the looping/spiral issue. I had flattened the list of pframes where the ellipses were oriented to (go me). The new problem is that i now have a few hundred ellipses on top of eachother as noted in the attached image. How can I clean out those extra values? Most recent GHX attached.

Attachments:

Heights_29nov_newPoints.gh, 32 KB

Permalink Reply by Evan Bauer on November 28, 2011 at 10:36pm

Permalink Reply by Brian Harms on November 28, 2011 at 10:42pm

Haha, I just put together a quick GH file for you but it doesnt look like you need it anymore. I'll upload anyways and then take a look at your file.

Attachments:

for Evan.gh, 10 KB

Permalink Reply by Brian Harms on November 28, 2011 at 10:52pm

I see. Just graft the "G" input of the Orient component. That way each ellipse matches up with one orientation plane. Otherwise each of the 567 curves gets oriented 567 times which was like 12000 ellipses.

Permalink Reply by Evan Bauer on November 28, 2011 at 11:33pm

Thanks for your help Brian! Worked like a charm. I knew it was something simple i was missing.

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