@awayjs/scene/lib/controllers/LookAtController.ts

AwayJS scene classes

import { Vector3D } from '@awayjs/core';

import { DisplayObject } from '../display/DisplayObject';
import { ControllerBase } from '../controllers/ControllerBase';

export class LookAtController extends ControllerBase {
	public _pLookAtPosition: Vector3D;
	public _pLookAtObject: DisplayObject;
	public _pOrigin: Vector3D = new Vector3D(0.0, 0.0, 0.0);

	// private _onLookAtObjectChangedDelegate: (event: DisplayObjectEvent) => void;

	constructor(targetObject: DisplayObject = null, lookAtObject: DisplayObject = null) {
		super(targetObject);

		// this._onLookAtObjectChangedDelegate = (event: DisplayObjectEvent) => this.onLookAtObjectChanged(event);

		if (lookAtObject)
			this.lookAtObject = lookAtObject;
		else
			this.lookAtPosition = new Vector3D();
	}

	public get lookAtPosition(): Vector3D {
		return this._pLookAtPosition;
	}

	public set lookAtPosition(val: Vector3D) {
		if (this._pLookAtObject) {
			// this._pLookAtObject.removeEventListener(DisplayObjectEvent.SCENETRANSFORM_CHANGED,
			// 	this._onLookAtObjectChangedDelegate);
			this._pLookAtObject = null;
		}

		this._pLookAtPosition = val;
		this.pNotifyUpdate();
	}

	public get lookAtObject(): DisplayObject {
		return this._pLookAtObject;
	}

	public set lookAtObject(val: DisplayObject) {
		if (this._pLookAtPosition)
			this._pLookAtPosition = null;

		if (this._pLookAtObject == val)
			return;

		// if (this._pLookAtObject)
		// 	this._pLookAtObject.removeEventListener(DisplayObjectEvent.SCENETRANSFORM_CHANGED,
		// 		this._onLookAtObjectChangedDelegate);

		this._pLookAtObject = val;

		// if (this._pLookAtObject)
		// 	this._pLookAtObject.addEventListener(DisplayObjectEvent.SCENETRANSFORM_CHANGED,
		// 		this._onLookAtObjectChangedDelegate);

		this.pNotifyUpdate();
	}

	//@override
	public update(interpolate: boolean = true): void {
		if (this._pTargetObject) {
			if (this._pLookAtPosition)
				this._pTargetObject.lookAt(this._pLookAtPosition);
			else if (this._pLookAtObject)
				this._pTargetObject.lookAt(this._pLookAtObject.transform.matrix3D.position);
		}
	}

	// private onLookAtObjectChanged(event: DisplayObjectEvent): void {
	// 	this.pNotifyUpdate();
	// }
}