Quad Meshing

Hi Guys,

I am trying to create a mesh with even quad panels from an original tri panel mesh. I have been successful in converting the tri panels to quads using weaverbird split quads, however, they are very uneven, in size and orientation, especially around the circle openings.

I am trying to get an even effect similar to this SOFTlab project - Common weathers.

How could i go about achieving an even quad mesh to this type of geometry.

Files of my working are below.

Duncan

Attachments:

Quad Mesh.3dm, 161 KB
Quad Mesh.gh, 34 KB

Replies to This Discussion

Permalink Reply by Hyungsoo Kim on May 9, 2016 at 10:53am

If your initial mesh has been well defined topologically, then you can get well arranged mesh edges.

Load 3dm. first. Best.

Attachments:

QuadMesh_re.3dm, 282 KB
QuadMesh_re.gh, 37 KB

Permalink Reply by Duncan Crowe on May 9, 2016 at 2:44pm

Thanks for the reply Hyungsoo Kim,

How do i topologically create a well defined mesh? Does it have to be drawn manually in rhino?

Duncan

Permalink Reply by Hyungsoo Kim on May 9, 2016 at 3:15pm

Yes, do some line works in rhino-->split surface-->convert to mesh & join+weld.

And check this as well.

Permalink Reply by Stuart Fingerhut on February 21, 2017 at 1:17pm

Hi Hyungsoo,

1st, thank you for all the great posts and feedback you provide.

2nd, I've been meshing like crazy to try and achieve the base rounded mesh w/ cutouts in your RH file... and have had no luck in achieving the the radial mesh grid as seen.

Do you have more info / advice on achieving the radial mesh grid from? Is it pre or post split? Is it nurb > split > mesh > join?

Thank you in advance!

Permalink Reply by Hyungsoo Kim on February 21, 2017 at 4:43pm

Hi.

Put simply, my step by step procedure is as shown in the attached diagram.

Of course you can do generating mesh in GH, but more cumbersome work compare to manually doing in Rhino.

Permalink Reply by Stuart Fingerhut on February 21, 2017 at 5:11pm

u rock, thank you again

Permalink Reply by Anders Holden Deleuran on February 22, 2017 at 1:04am

Hi Stuart, attached a definition/cluster from a workshop we did once working with similar type mesh topologies. It generates random quadmeshes with holes that can be subdivided for form finding, is uses GHPython and Weaverbird. The thing that might be useful for you is the Python component which offsets a list of connected polyline cells (duals in this case) inwards as a one mesh. Hope that helps..

Edit: Another approach is to just model the coarse mesh faces directly in Rhino, feed them into GH, join/subdivide (with Weaverbird or the mesh tools in Kangaroo1), and then pass this to the form finding process (where you can pull naked vertices to curves to achieve the perimeter you are looking for). As seen in this video.

Attachments: