How to create custom geometry?

[hofk]

The corners and edges visible without wireframe are identical 8.

To form triangles, your other software may use additional vertices that cannot be seen in your images. That’s why you need the sketch to recognize the principle.

There are also additional vertices in these examples.

Round-edged box flat

There is already a series of boxes with rounded corners. Links to some rounded boxes see: Addon to create special / extended geometries - #3 by hofk In response to a question ( Problems applying texture to Extruded Geometry), I created another special one - based on RoundedRectangle + Squircle . In the Collection of examples from discourse.threejs.org see RoundEdgedBoxFlat [2021-09-17 19.41.01] [2021-09-16 20.18.44] [2021-09-17 19.59.09] // non indexed BufferGeometry function RoundE…