morph on surface

Replies to This Discussion

Permalink Reply by mia on December 27, 2015 at 2:18am

try to unroll the surface and use pull curve to surface component.

Permalink Reply by Hyungsoo Kim on December 27, 2015 at 7:42am

Hi.

If you can prepare the base & target surfaces which are untrimmed and have the same topological domain order, then you can do UV mapping or "Map to Surface"

Attachments:

• RadialPatternMapping3D.gh, 24 KB

Permalink Reply by jalinkao on December 27, 2015 at 9:42pm

yes, it's exactly what I want, 

very helpful, thank you so much!!

Permalink Reply by jalinkao on December 27, 2015 at 9:43pm

 will study this now 

thank again!

Permalink Reply by Joseph Oster on December 28, 2015 at 8:28am

Another very fine piece of work, Hyungsoo!  One can learn a great deal by studying this code.

The 'Voronoi Pattern to Map' group from jalinkao's initial post is VERY CLEVER too!

I started this reply with some questions in mind but have looked at, played with it and modified it now so these are more comments than questions...

First, I wondered why you have two "Target Surface" groups: 'Target Surface-01' and 'Target Surface-02', when they both appeared to result in the same thing, a hemisphere?  I couldn't see any difference between them, swapping one for the other on 'Map Srf' but did see a slight difference when applied to the 'UV mapping On Target / PLine' groups.

Later, I realized why you might want to use the 'Target Surface-02' approach when I studied the 'Initial Source Surface(Radial)' group and thought a circle and boundary surface would work there instead - BUT IT DOESN'T!  The radial construction of 'NetSurf' in this case is essential for mapping the Voronoi curves to the hemisphere as expected (though using a circle/boundary surface instead produces and interesting effect).

Then I thought the hemisphere from 'List Item' in the 'Base Surface(Half Sphere-Trimmed Srf.)' group would work instead of 'Target Surface-01' or 'Target Surface-02', but that doesn't work either because it's a trimmed surface and 'Map Srf' applies the Voronoi curves to the whole sphere instead of only half.  Still, I managed to simplify things quite a bit by creating a hemisphere directly instead of splitting a sphere.

I didn't see any difference from the 'Rebuild Curve' group so deleted it...(?)

And I added 'Boundary' and 'Join' components to 'UV mapping On Target / PLine' to create a 'Planar Voronoi Surfaces' group - pretty cool!

Here's the result:

Attachments:

• RadialPatternMapping3D_2015Dec28a.gh, 27 KB

Permalink Reply by jalinkao on December 28, 2015 at 11:19pm

hi,Joseph,

thank you so much for your detailed reply,

I looked into the result and, I thought you made the voronoi points linked into the same number points on the sphere?because I was thinking about to do that and I didn't know what went wrong.Anyway, it's very good and clear, thank you very much for involving, it really helps!

jalin

Permalink Reply by Joseph Oster on December 29, 2015 at 6:22am

The really nice work here was done by Hyungsoo Kim, not me.  My comments were only an effort to understand and explain what he did, which is brilliant!  But your pattern that started this is very cool too.  The voronoi planar surfaces that result from the evenly spaced points are great:

Permalink Reply by Leonardo Aguiar on July 6, 2017 at 9:58pm

Hi Joseph,

Thanking for showing that the boundary component can make planar surfaces with the output from Hyungsoo's definition. 

I am interested in manipulating the definition a little more, mostly changing the size of a few parameters. So I downloaded your file and opened it. For some reason I am getting an error for the boundary component. Do you know why this might be? Would you know Hyungsoo? I also downloaded Hyungsoo's file and added the Boundary component but still got the same error.

Attached are screen captures of the error. Some of the planar surfaces are generated but a lot of them aren't. I am working on RhinoWIP on a Mac and I have noticed that some issues show up when I am checking out some of the shared files I download from this forum. For example, for these files I had to replace the panel with the 3 boolean items, true, false, true with a new one for the cull component to work. Could this be a RhinoWIP Mac issue?

Thanks for helping.

Attachments:

• 2017-07-07 boundary error01.png, 939 KB
• 2017-07-07 boundary error02.png, 879 KB

Permalink Reply by Joseph Oster on July 7, 2017 at 9:15am

Hello Leonardo,

I am seeing the same errors you are.  Most of the closed 'PLine' curves are not planar so 'Boundary' fails.  I don't remember how or why it seemed to work ~18 months ago?  Sorry.

Permalink Reply by Leonardo Aguiar on July 7, 2017 at 12:29pm

Hi guys,

Thanks for the feedback Joseph and confirming that it wasn't an OS related issue.

I ended up using the Patch component. For now it suits my needs.

Thanks again!

Permalink Reply by Leonardo Aguiar on July 7, 2017 at 1:20pm

Hi guys,

After tinkering around with some components I hacked a simple solution for getting the Boundary Surface component to work. The edges don't meet like in Joseph's image above but the surfaces are planar.

Hope this helps someone sometime.

Cheers

Attachments:

• 2017-07-07 Boundary surfaces hack.png, 379 KB