Lofting Metaball

[clem.granger]

Hie everyone,

I’m trying to loft metaballs curves, I found this way :

Metaballs to mesh

Someone can help me, I’m trying to make a mesh from a metaball but i dont know how. Metaball.gh (8.3 KB)

But there no way to make it work on my slow PC and I don’t need a closed surface.

It works with one ball :

But can’t make it with two (or more) I’ve tried grafted or flattened…

If someone have a clue :
metaball_loft01.gh (11.0 KB)

Have a good day !

[Joseph_Oster]

Flip Matrix before Loft.

[martinsiegrist]

check this file: METABALL EXPLORATION - ROUGHy.gh (32.8 KB)

Controlling the bridges in metaball geometry

In this case you need to graft the planes and not the pipes. Grafting the pipes leaves you with a data structure per pipe. You want to have sections per plane. In your existing definition you can look at the Curves input of the Region Union component and you’ll see paths with different lengths. Due to that, the Region Union component doesn’t know what to do. [image] I added a Shift Paths component to have both the pipe sections and the metaball curves with an identical data structure. [i…

[clem.granger]

It works great !
What’s the use of flip matrix there ?
Thanks a lot Joseph.

[Joseph_Oster]

@clem.granger

What’s the use of flip matrix there ?

Take a look at this:

Is there a better way to browse trees and their contents?

[image] vuTreeList_2017_Jan19a.gh (20.0 KB) [image] rows_and_columns_2018Jan23a.gh (20.2 KB)

Try connecting the ‘Tree/List Viewer’ tool before and then after Flip Matrix. Play with both sliders. See the difference?

[Joseph_Oster]

@clem.granger

What’s the use of flip matrix there ?

Before Flip Matrix, each branch of the tree is a layer with one curve from each ball.
After Flip Matrix, each branch of the tree has all the curves for one ball, as you need for Loft.

metaball_loft_2020Dec10a.gh (28.2 KB)

[clem.granger]

Thanks for the explication, i’ll take time to check your examples…

I’ve got a new loft trouble,

Some are lofted “straigth” in green and some are “spinned” in red.

Don’t khnow why !

metaball_loft_working01.gh (15.8 KB)

[Joseph_Oster]

Invert the ‘Adj’ input of Loft Options or set it manually (‘Align sections’) without the Loft Options component.

The seams (start/end points) are not aligned. It’s also possible to mess up Loft by having loft curves going opposite directions.

[clem.granger]

Im dumb your great !

Thanks a lot Joseph, have a good day !

[user135]

Hi @Joseph_Oster
after metaballs(t), i want to make a loft with these polylines but i think the output list is stochastic and the loft is not possible. can you help me?
asaa.gh (9.2 KB)

[martinsiegrist]

Seen this topic yet: Controlling the bridges in metaball geometry - #4 by martinsiegrist

[Quan_Li]

Simplify the poly curves
Sort by height
Remove unnecessary curves
Loft aligned

[laurent_delrieu]

There was a duplicate curve, reason it didn’t work.
Always inspect the data, put panels, bake …

asaa.gh (11.1 KB)

[user135]

Hi @laurent_delrieu
thank you for your effort , but again it does not work.
asaa.gh (15.1 KB)

[laurent_delrieu]

Hi
it could be good you read the documentation about lofting. It is not a magical tool.
Or you group the curves or you follow others strategies

Meshing metaballs

Hi, I am having trouble with generating meshes from metaballs. I’ve tried all the ways found on the internet (Cocoon, Ball Pivot), but the only one that worked for me was using Chromodoris plugin (when I tried to use some other plugins, Grasshopper always got stucked, maybe because I have too much metaballs or because they are large). The problem I have with this is that the larger meshes made from metaballs have another smaller mesh inside them, that I can’t get rid off. Is it possible to rem…

Metaballs to mesh

Someone can help me, I’m trying to make a mesh from a metaball but i dont know how. Metaball.gh (8.3 KB)

Metaballs to mesh in year 2020

Hello guys, I’ve a really easy question for you, not sure about the easiness reply: What’s the fastest and best method to pass from Metaballs isocurves to Meshes in 2020 with Rhino 6? So going from this to meshes. I’m trying to create and update thread for this interesting topic. . . . I did my reasearch and I’ve read a lot of topics: Here they are suggesting cocoon (too slow) and chromodoris (for rhino 5, I’ve to check if its compatible with rhino 6). After they are s…

[user135]

ok, but in this case, even though, the curves are aliened and logical but the loft is not working

[laurent_delrieu]

Hello
when it doesn’t work, you must read the comments, then if not useful inspect the data.
Here I have first curve on top then 2nd botton then third upper … so just split the list and take others.
You can also bake the curve and inspect in Rhino …

[user135]

thanks a lot @laurent_delrieu
as a result, this is not efficient.

[laurent_delrieu]

Most of the times meshes are more versatile/efficient. Making “pure” shape is a bit more difficult. A surface is just a deformed square.