javascript - Three.js透明背景根本不起作用

Question

我一直在阅读其他人已经提出的一些问题，特别是这个:

Transparent background with three.js

我需要使背景透明而不是黑色，但这对我不起作用。

添加了这些行:(阅读我上面发布的问题)

var renderer = new THREE.WebGLRenderer( { alpha: true } );
renderer.setClearColor( 0x000000, 0 );

它根本不起作用。 完整代码如下:

var container, stats;

var camera, scene, renderer;

var mouseX = 0, mouseY = 0;

var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;

var renderer = new THREE.WebGLRenderer( { alpha: true } );


init();
animate();


function init() {

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

  camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 2000 );
  camera.position.z = 250;

  // scene

  scene = new THREE.Scene();

  var ambient = new THREE.AmbientLight( 0x444444 );
  scene.add( ambient );

  var directionalLight = new THREE.DirectionalLight( 0xffeedd );
  directionalLight.position.set( 0, 0, 1 ).normalize();
  scene.add( directionalLight );


  var geometry = new THREE.BoxGeometry( 100, 100, 100 );
  var material = new THREE.MeshLambertMaterial( { color: 0x00ff00 } );
  var cube = new THREE.Mesh( geometry, material );
  cube.rotation.y = Math.PI * 0.35;
  scene.add( cube );

  renderer = new THREE.WebGLRenderer();
  renderer.setPixelRatio( window.devicePixelRatio );
  renderer.setSize( window.innerWidth, window.innerHeight );
  container.appendChild( renderer.domElement );

  document.addEventListener( 'mousemove', onDocumentMouseMove, false );

  //

  window.addEventListener( 'resize', onWindowResize, false );

}

function onWindowResize() {

  windowHalfX = window.innerWidth / 2;
  windowHalfY = window.innerHeight / 2;

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

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

}

function onDocumentMouseMove( event ) {

  mouseX = ( event.clientX - windowHalfX ) / 2;
  mouseY = ( event.clientY - windowHalfY ) / 2;

}

//

function animate() {

  requestAnimationFrame( animate );
  render();

}

function render() {

  camera.position.x += ( mouseX - camera.position.x ) * .05;
  camera.position.y += ( - mouseY - camera.position.y ) * .05;

  camera.lookAt( scene.position );

  renderer.render( scene, camera );

  renderer.setClearColor( 0x000000, 0 ); 

}

<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r74/three.min.js"></script>

Answer 1

错误是代码正在创建 2 个 THREE.WebGLRenderer

靠近文件顶部的第一个有 alpha。但实际使用的是在中间附近创建的，没有 alpha。

删除第二个，它将开始工作