each object has matrix which defines object’s transformation (position, rotation, scale)
- if we change that, three js recompute matrix (matrixautoupdate)
- if parent (or world) changed, you can update matrix world
Three js Object3Ds
Three js Object3D Property
default order
How can I set Z up coordinate system in three.js?
In three.js Y axis represent up and down and Z axis represent forward and backward. But I want Z axis to represent up and down and Y axis to forward and backward. Here is a image showing what I wan...
https://stackoverflow.com/questions/44630265/how-can-i-set-z-up-coordinate-system-in-three-js

Seonglae Cho