Скачать или смотреть Generating a MeshInstance3D Procedurally Using the SurfaceTool Object In The Godot Engine

Using the SurfaceTool object I'm generating vertices in code, in a clockwise winding pattern.

The 6 faces of the inner cube are added, with 12 triangles. To get correct lighting, I automatically generate normals on the surface before committing it to my final Array Mesh.

Afterwards I generate 8 triangles, generate those normals, and commit to the ArrayMesh before generating 8 more for the backsides of the floating triangles. Otherwise, only one side would ever be visible. I'm not so certain this is the only or smartest approach.

It took me a while to get the normals right, but finally it looks okay. There seems to be some artifacts on the faces of the cube's lighting, but it might be because of the position of the sun, and the resolution of the lighting engine. Not sure!

After all that's done and I instance a MeshInstance3D, and add it to the scene, without any material.

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https://coltonphillips.itch.io/

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