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Hierarchy & Transforms

Entities can be arranged in a parent-child hierarchy. The Entity class inherits transform functionality from the GraphNode superclass.

Key Points​

  • Transforms are relative to the parent.
  • World transforms are calculated by combining local transforms through the hierarchy.
  • Moving a parent affects all its children.
tip

Minimize deep hierarchies. Shallow hierarchies are easier to manage and can perform better.

Example​

childEntity.setLocalPosition(1, 0, 0); // Relative to parent
console.log(childEntity.getWorldPosition()); // Global position

See setLocalPosition and getWorldPosition.

Re-parenting​

newParent.addChild(childEntity);

Scaling Considerations​

  • Non-uniform scaling can cause visual or physical issues.
  • Avoid scaling physics-enabled entities unless necessary.