DriftEngineModel loading · function
orientNodes
Turn an asset's hierarchy by the same rotation orientMeshes turns its geometry by.
Explained in Importing models.
function orientNodes(nodes: readonly DrftNode[], assetUp: UpAxis): DrftNode[]import { orientNodes } from '@driftengine/assets';Parameters
| Parameter | Type | Description |
|---|---|---|
nodes | readonly DrftNode[] | |
assetUp | UpAxis |
In depth
Without this, --up silently desynchronises the two. The meshes rotate and the graph does
not, so every node then claims a part is somewhere it no longer is — and nothing downstream can
detect it, because both halves are individually well formed. That is the worst shape a bug can
take in a bake, so the two turns happen together or the hierarchy is wrong.
Only roots are turned, and that is not an optimisation: a child's transform is relative to its parent, so rotating the parent already carries every descendant with it. Turning a child too would apply the rotation twice.