Function bindMesh

Binds a scene mesh to a new THREE.Mesh and keeps it in sync on every SceneLike.commitFrame: dirty ranges are copied into the attributes' mirrors and marked with addUpdateRange, attributes are recreated when the mesh's slot counts change, the colour attribute comes and goes with the mesh's colouring, the uv attribute with its UVs, and object.matrix follows its placement.

Dead vertex slots keep stale positions, so the geometry's bounding box and sphere are computed from the vertices of live triangles only (a removed triangle reads 0, 0, 0 in the index). They are recomputed when positions or indices change, never on placement-only frames.

With shading: "fragment" the colour attribute is replaced by the colouring's values (fmValue), coloured per fragment by a shader chunk the binding adds to the material (see BindMeshOptions.shading).

When the scene mesh is removed, the binding detaches: it stops following the scene and leaves the object as it was (remove it from your THREE.Scene and call BoundMesh.dispose).

The object must sit under an untransformed parent (its matrix is a world matrix); a transformed ancestor is detected and warned about once.

With a debug scene (new Scene({ debug: true })), the views the binding copies from are checked Proxy objects (see SceneOptions.debug for their cost); the mirrors it uploads are always plain typed arrays.

The adapter only listens through SceneLike.onChanges: call scene.commitFrame() once per animation frame, before rendering.