QuadRemesh manipulation post processing

I’m working with scan data. I opened the point cloud file and converted using QuadRemesh. The result is quite good, but needs some clean up. I turned Control Points on, and have been able to move errant surface points. I am having a couple of issues.

  1. If there is incorrect webbing inserted, I try to delete the points, and webbing gets re-created with other points.
  2. There are a bunch of points that I need to get rid of (i.e., the surface the object was sitting on). I selected thousands of points (used Lasso; they lit up). I hit delete, and got a message that 14 points were deleted. Selected again, saw that 14,262 mesh points added to selection, hit delete, and got message “Deleted 1 control point”.
  3. CurvatureAnalysis won’t let me select QuadMesh output.
  4. Join won’t let me select QuadRemesh output.

I’m completely new here; trying out Rhino 8 as my first use. Is there any more documentation on QuadRemesh? I’m very excited about its functionality, but am having difficulty getting it to work with other functions. (Also, am having some issues with QuadRemesh sometimes hanging and needing to restart Rhino. Esc sometimes works to stop, sometimes doesn’t.)

Thanks for any suggestions!
Bonny

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Hi Bonny -

When you delete mesh vertices in a larger mesh object, mesh N-gons are created. From your description, I’m not completely sure if that’s what you are running into… It’s always better to upload a file when you are asking for help.

I’d use the SelectionFilterFaces command to make sure that you are selecting complete mesh faces and then delete those.
You’ll have to remember using SelectionFilterNone when you are done.

Mesh faces are flat. There might be shading tricks in use to make a mesh object appear smooth, but, for now, mesh objects are disqualified from curvature analysis. The request for a signed mean curvature display for meshes is on the list a few times, e.g. RH-33519 Mesh curvature display

Mesh objects are the easiest to join, so I’d need to see the file to understand what’s failing. Or are you first selecting a different type of object, and then a mesh object?
-wim

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