Shell on mesh possible?

Rhino
1

20240707_075909
20240707_0759091920×1440 208 KB

I love to see if the mesh is getting scooped like the ploysurface.

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1.) OffsetMesh Command:

  • You can use the OffsetMesh command to create a shell effect by offsetting the mesh inward. This approach involves offsetting the mesh and then manually capping or closing any resulting gaps.
  • Steps:
    1. Select the mesh.
    2. Use the OffsetMesh command with the Solid option enabled.
    3. Adjust the offset distance as required.

2.) Grasshopper and Dendro Plugin:

  • Grasshopper, combined with the Dendro plugin, provides powerful tools for volumetric modeling, allowing you to create complex mesh shells.
  • Dendro uses the OpenVDB library to handle volumetric data, which can be useful for creating smooth, detailed shells.
  • Example Workflow:
    1. Create a Grasshopper definition using Dendro to voxelize the mesh.
    2. Use Dendro’s offset features to create an inner shell.
    3. Convert the result back to a mesh and smooth as necessary.

3.) Manual Method:

  • For more control, you can manually edit the mesh to achieve a shell effect:
    1. Explode the mesh if needed.
    2. Delete specific faces to create an opening.
    3. Offset the remaining mesh inward using OffsetMesh.
    4. Rebuild or cap any open edges manually.

4.) ShrinkWrap in Rhino 8:

  • Rhino 8 introduces a ShrinkWrap feature that can create wrapped meshes from various geometry types, including meshes. This can be used to create a shell by wrapping an offset version of the original mesh.
  • Steps:
    1. Use the ShrinkWrap command on your mesh.
    2. Set the offset distance to create the desired shell thickness.
    3. Adjust settings to ensure the new mesh conforms closely to the original.