import { GeoCoordinates } from "@here/harp-geoutils" ; import { MapAnchor , MapViewEventNames , RenderEvent } from "@here/harp-mapview" ; import * as THREE from "three" ; import { FBXLoader } from "three/examples/jsm/loaders/FBXLoader.js" ; import { HelloWorldExample } from "./getting-started_hello-world_npm" ; /**
 * This example builds on top of the [[ThreejsAddSimpleObject]].
 * Additionaly this example shows how to animate a [THREE.js](https://threejs.org/) object that
 * was added to the scene.
 *
 * Therefore the object is loaded with one of the [THREE.js](https://threejs.org/) loaders (we chose
 * FBX here).
 * ```typescript
 * [[include:harp_gl_threejs_add_animated-object_load.ts]]
 * ```
 *
 * Once the object is loaded, we add it to the [[MapView.scene]] :
 * ```typescript
 * [[include:harp_gl_threejs_add_animated-object_add_to_scene.ts]]
 * ```
 *
 * Similar to the [[ThreejsAddSimpleObject]] example we add an event listener to the map view
 * that is called whenever the map is rendered to update the position of the object.
 * ```typescript
 * [[include:harp_gl_threejs_add_animated-object_add_listener.ts]]
 * ```
 * In the same callback we additionaly update the animation of our object:
 * ```typescript
 * [[include:harp_gl_threejs_add_animated-object_update_animation.ts]]
 * ```
 *
 * Normaly the map is only rendered when needed, i.e. when the user is interacting with the map.
 * Since we want to have a constant animation we have to tell [[MapView]] to always render.
 * We can do this via [[MapView.beginAnimation]]. We can stop the animation again with
 * [[MapView.endAnimation]].
 * ```typescript
 * [[include:harp_gl_threejs_add_animated-object_begin_animation.ts]]
 * ```
 */ export namespace ThreejsAddAnimatedObject { const mapView = HelloWorldExample . mapView ; const figureGeoPosition = new GeoCoordinates ( 40.70497091 , - 74.0135 ) ; mapView . lookAt ( { target : figureGeoPosition , zoomLevel : 20 , tilt : 40 , heading : 40 } ) ; const clock = new THREE . Clock ( ) ; let figure ; let mixer ; const onLoad = ( object ) => { mixer = new THREE . AnimationMixer ( object ) ; const action = mixer . clipAction ( object . animations [ 0 ] ) ; action . play ( ) ; figure = object as THREE . Group ; figure . traverse ( ( child ) => { child . renderOrder = 10000 ; } ) ; figure . renderOrder = 10000 ; figure . rotateX ( Math . PI / 2 ) ; figure . scale . set ( 0.3 , 0.3 , 0.3 ) ; figure . name = "guy" ; figure . anchor = figureGeoPosition ; figure . overlay = true ; mapView . mapAnchors . add ( figure ) ; } ; const loader = new FBXLoader ( ) ; loader . load ( "resources/dancing.fbx" , onLoad ) ; const onRender = ( event ) => { if ( mixer ) { const delta = clock . getDelta ( ) ; mixer . update ( delta ) ; } } ; mapView . addEventListener ( MapViewEventNames . Render , onRender ) ; mapView . beginAnimation ( ) ; }