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

import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls.js';
import { OrbitControls0 } from 'three/examples/jsm/controls/OrbitControls0.js';
import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader.js';
import { RoomEnvironment } from 'three/examples/jsm/environments/RoomEnvironment.js';

import { GUI } from 'three/examples/jsm/libs/lil-gui.module.min.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 camera, scene, renderer, controls;

  init();
  animate();

  function init() {

    const container = document.createElement( 'div' );
    document.body.appendChild( container );

    camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.1, 20 );
    camera.position.set( - 0.75, 0.7, 1.25 );

    scene = new THREE.Scene();
		var AmbientLight = new THREE.AmbientLight(0xffffff,2)
		scene.add(AmbientLight)
    // model

    new GLTFLoader()
      .setPath( 'models/gltf/' )
      .load( 'SheenChair.glb', function ( gltf ) {

        scene.add( gltf.scene );

        const object = gltf.scene.getObjectByName( 'SheenChair_fabric' );

        const gui = new GUI();

        gui.add( object.material, 'sheen', 0, 1 );
        gui.open();

      } );

    renderer = new THREE.WebGLRenderer( { antialias: true } );
    renderer.setPixelRatio( window.devicePixelRatio );
    renderer.setSize( window.innerWidth, window.innerHeight );
    renderer.toneMapping = THREE.ACESFilmicToneMapping;
    renderer.toneMappingExposure = 1;
    container.appendChild( renderer.domElement );

    const environment = new RoomEnvironment( renderer );
    const pmremGenerator = new THREE.PMREMGenerator( renderer );

    scene.background = new THREE.Color( 0xbbbbbb );
    scene.environment = pmremGenerator.fromScene( environment ).texture;

    controls = new (window.platform=="devtools"?OrbitControls:OrbitControls0)( camera, renderer.domElement );
    controls.enableDamping = true;
    controls.minDistance = 1;
    controls.maxDistance = 10;
    controls.target.set( 0, 0.35, 0 );
    controls.update();

    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 );

    controls.update(); // required if damping enabled

    render();

  }

  function render() {

    renderer.render( scene, camera );

  }
  }
})