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 { LightProbeHelper } from 'three/examples/jsm/helpers/LightProbeHelper.js';
import { LightProbeGenerator } from 'three/examples/jsm/lights/LightProbeGenerator.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 renderer, scene, camera, cubeCamera;

  let lightProbe;

  init();

  function init() {

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

    // scene
    scene = new THREE.Scene();

    // camera
    camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 1000 );
    camera.position.set( 0, 0, 30 );

    const cubeRenderTarget = new THREE.WebGLCubeRenderTarget( 256 );

    cubeCamera = new THREE.CubeCamera( 1, 1000, cubeRenderTarget );

    // controls
    const controls = new (window.platform=="devtools"?OrbitControls:OrbitControls0)( camera, renderer.domElement );
    controls.addEventListener( 'change', render );
    controls.minDistance = 10;
    controls.maxDistance = 50;
    controls.enablePan = false;

    // probe
    lightProbe = new THREE.LightProbe();
    scene.add( lightProbe );

    // envmap
    const genCubeUrls = function ( prefix, postfix ) {

      return [
        prefix + 'px' + postfix, prefix + 'nx' + postfix,
        prefix + 'py' + postfix, prefix + 'ny' + postfix,
        prefix + 'pz' + postfix, prefix + 'nz' + postfix
      ];

    };

    const urls = genCubeUrls( 'textures/cube/pisa/', '.png' );

    new THREE.CubeTextureLoader().load( urls, function ( cubeTexture ) {

      scene.background = cubeTexture;

      cubeCamera.update( renderer, scene );

      lightProbe.copy( LightProbeGenerator.fromCubeRenderTarget( renderer, cubeRenderTarget ) );

      scene.add( new LightProbeHelper( lightProbe, 5 ) );

      render();

    } );

    // listener
    window.addEventListener( 'resize', onWindowResize );

  }

  function onWindowResize() {

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

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

    render();

  }

  function render() {

    renderer.render( scene, camera );

  }

  }
})