import * as THREE from 'three';
const {
  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 { ThreeMFLoader } from 'three/examples/jsm/loaders/3MFLoader.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;

  init();

  function init() {

    scene = new THREE.Scene();
    scene.background = new THREE.Color( 0xa0a0a0 );
    scene.fog = new THREE.Fog( 0xa0a0a0, 10, 500 );

    camera = new THREE.PerspectiveCamera( 35, window.innerWidth / window.innerHeight, 1, 500 );
    camera.position.set( - 50, 40, 50 );
    scene.add( camera );

    //

    const hemiLight = new THREE.HemisphereLight( 0xffffff, 0x8d8d8d, 3 );
    hemiLight.position.set( 0, 100, 0 );
    scene.add( hemiLight );

    const dirLight = new THREE.DirectionalLight( 0xffffff, 3 );
    dirLight.position.set( - 0, 40, 50 );
    dirLight.castShadow = true;
    dirLight.shadow.camera.top = 50;
    dirLight.shadow.camera.bottom = - 25;
    dirLight.shadow.camera.left = - 25;
    dirLight.shadow.camera.right = 25;
    dirLight.shadow.camera.near = 0.1;
    dirLight.shadow.camera.far = 200;
    dirLight.shadow.mapSize.set( 1024, 1024 );
    scene.add( dirLight );

    // scene.add( new THREE.CameraHelper( dirLight.shadow.camera ) );

    //

    const manager = new THREE.LoadingManager();

    const loader = new ThreeMFLoader( manager );
    loader.load( './models/3mf/truck.3mf', function ( object ) {

      object.rotation.set( - Math.PI / 2, 0, 0 ); // z-up conversion

      object.traverse( function ( child ) {

        child.castShadow = true;

      } );

      scene.add( object );

    } );

    //

    manager.onLoad = function () {

      render();

    };

    //

    const ground = new THREE.Mesh( new THREE.PlaneGeometry( 1000, 1000 ), new THREE.MeshPhongMaterial( { color: 0xcbcbcb, depthWrite: false } ) );
    ground.rotation.x = - Math.PI / 2;
    ground.position.y = 11;
    ground.receiveShadow = true;
    scene.add( ground );

    //

    renderer = new THREE.WebGLRenderer( { antialias: true } );
    renderer.setPixelRatio( window.devicePixelRatio );
    renderer.setSize( window.innerWidth, window.innerHeight );
    renderer.shadowMap.enabled = true;
    renderer.shadowMap.type = THREE.PCFSoftShadowMap;
    document.body.appendChild( renderer.domElement );

    //

    const controls = new (window.platform=="devtools"?OrbitControls:OrbitControls0)( camera, renderer.domElement );
    controls.addEventListener( 'change', render );
    controls.minDistance = 50;
    controls.maxDistance = 200;
    controls.enablePan = false;
    controls.target.set( 0, 20, 0 );
    controls.update();

    window.addEventListener( 'resize', onWindowResize );

    render();

  }

  function onWindowResize() {

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

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

    render();

  }

  function render() {

    renderer.render( scene, camera );

  }
  }
})