AddictArts/three.js — comment on commit 3a4b8d442c0c547007bb6bccafe9e4a32f5cf898
File:  line 0
By ekitson:

@mrdoob
When we were working with O3D before, that's how we would do it since they only stored the transform matrix. For threejs I thought the offsets could be more efficient than creating a deeper scene graph, although that may be wrong. Either way, it looks like `Geometry.applyMatrix` should be exactly what we need and the most efficient approach.