About Node Property Propagation
Learn which properties of a node affect its child nodes.
Overview
Changing certain properties on a node can propagate to its decendants:
| Property | Description |
|---|---|
xScale, yScale |
The node’s coordinate system is scaled by these two factors. This property affects coordinate conversion, the node’s frame, drawing, and hit testing. Its descendants are similarly scaled. |
zPosition |
The node’s draw order. Nodes with a higher zPosition are rendered above nodes with a lower zPosition. This value propagates to its descendants such that a node’s zPosition is equal to that of its parent node, plus any value it holds in its own zPosition property. |
alpha |
If the node is rendered using a blend mode, the alpha value is multiplied into any alpha value before the blend operation takes place. The descendants are similarly affected. |
isHidden |
If a node is hidden, the node and its descendants are not rendered. |
speed |
The speed at which a node processes actions is multiplied by this value. The descendants are similarly affected. |
The net effect is that a child node is rendered based not only on its own properties but also on the properties of its ancestors.