import * as THREE from 'three';
const {
  document,
	window,
	HTMLCanvasElement,
	requestAnimationFrame,
	cancelAnimationFrame,
core,
	Event,
  Event0
} = THREE .DHTML

import Stats from 'three/examples/jsm/libs/stats.module.js';

import { ColladaLoader } from 'three/examples/jsm/loaders/ColladaLoader.js';
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls.js';
import { OrbitControls0 } from 'three/examples/jsm/controls/OrbitControls0.js';
var requestId
Page({
	onUnload() {
		cancelAnimationFrame(requestId, this.canvas)
		this.worker && this.worker.terminate()
if(this.canvas) this.canvas = null
		setTimeout(() => {
			if (this.renderer instanceof THREE.WebGLRenderer) {
				this.renderer.dispose()
				this.renderer.forceContextLoss()
				this.renderer.context = null
				this.renderer.domElement = null
				this.renderer = null
			}
		}, 10)
	},
  webgl_touch(e){
		const web_e = (window.platform=="devtools"?Event:Event0).fix(e)
		this.canvas.dispatchEvent(web_e)
  },
  onLoad() {
		document.createElementAsync("canvas", "webgl2",this).then(canvas => {
      this.canvas = canvas
      this.body_load(canvas).then()
    })
  },
  async body_load(canvas3d) {

    let container, stats, clock, controls;
    let camera, scene, renderer, mixer;

    init();
    animate();

    function init() {

      container = document.getElementById( 'container' );

      camera = new THREE.PerspectiveCamera( 25, window.innerWidth / window.innerHeight, 1, 1000 );
      camera.position.set( 15, 10, - 15 );

      scene = new THREE.Scene();

      clock = new THREE.Clock();

      // collada

      const loader = new ColladaLoader();
      loader.load( './models/collada/stormtrooper/stormtrooper.dae', function ( collada ) {

        const avatar = collada.scene;
        const animations = avatar.animations;

        mixer = new THREE.AnimationMixer( avatar );
        mixer.clipAction( animations[ 0 ] ).play();

        scene.add( avatar );

      } );

      //

      const gridHelper = new THREE.GridHelper( 10, 20, 0xc1c1c1, 0x8d8d8d );
      scene.add( gridHelper );

      //

      const ambientLight = new THREE.AmbientLight( 0xffffff, 0.6 );
      scene.add( ambientLight );

      const directionalLight = new THREE.DirectionalLight( 0xffffff, 3 );
      directionalLight.position.set( 1.5, 1, - 1.5 );
      scene.add( directionalLight );

      //

      renderer = new THREE.WebGLRenderer( { antialias: true } );
      renderer.setPixelRatio( window.devicePixelRatio );
      renderer.setSize( window.innerWidth, window.innerHeight );
      container.appendChild( renderer.domElement );

      //

      controls = new (window.platform=="devtools"?OrbitControls:OrbitControls0)( camera, renderer.domElement );
      controls.screenSpacePanning = true;
      controls.minDistance = 5;
      controls.maxDistance = 40;
      controls.target.set( 0, 2, 0 );
      controls.update();

      //

      stats = new Stats();
      container.appendChild( stats.dom );

      //

      window.addEventListener( 'resize', onWindowResize );

    }

    function onWindowResize() {

      camera.aspect = window.innerWidth / window.innerHeight;
      camera.updateProjectionMatrix();

      renderer.setSize( window.innerWidth, window.innerHeight );

    }

    function animate() {

      requestId = requestAnimationFrame( animate );

      render();
      stats.update();

    }

    function render() {

      const delta = clock.getDelta();

      if ( mixer !== undefined ) {

        mixer.update( delta );

      }

      renderer.render( scene, camera );

    }
  }
})