DriftEngine

The 2D layer · function

diffTree

Compare the tree against last frame and mark what changed.

Explained in Sprites and tilemaps.

function diffTree(tracker: DirtyTracker, root: UiNode): boolean
import { diffTree } from '@driftengine/ui2d';

Parameters

ParameterTypeDescription
trackerDirtyTracker
rootUiNode

In depth

Walks hidden nodes too, because a node that just became hidden is exactly the one whose previous rectangle has to be marked.