圆环隧道动画

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html

css

JavaScript

var $container = $('#container');
var renderer = new THREE.WebGLRenderer({antialias: true});
var camera = new THREE.PerspectiveCamera(80,window.innerWidth/window.innerHeight,0.1,10000);
var scene = new THREE.Scene();
var mouseX = 0, mouseY = 0;

// Uncomment code below for tunnel steering!
// You will fly through the walls like in Mario Kart, haha.
// var windowHalfX = window.innerWidth / 2;
// var windowHalfY = window.innerHeight / 2;
// document.addEventListener( 'mousemove', onDocumentMouseMove, false );

scene.add(camera);
renderer.setSize(window.innerWidth, window.innerHeight);
$container.append(renderer.domElement);

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

// Console
var Controls = function() {
  this.speed = 2;
  this.rotation = 0;
};

var text = new Controls(),
    gui = new dat.GUI();
    gui.add(text, 'speed', 0, 10);
    gui.add(text, 'rotation',0,15);

/////////////////////////////////////////

// Normalmaterial
var normalMaterial = new THREE.MeshNormalMaterial({});

// Torus
function Torus(f){
  this.b = new THREE.Mesh(new THREE.TorusGeometry( 160, 75, 2, 13),normalMaterial);
  this.b.position.x = 57*Math.cos(f);
  this.b.position.y = 57*Math.sin(f);
  this.b.position.z = f*1.25;
  this.b.rotation.z = f*0.03;
}
    
var numTorus = 80;
var tabTorus = [];
for(var i=0; i<numTorus; i++){
  tabTorus.push(new Torus(-i*13));
  scene.add(tabTorus[i].b);
}

// Update
function update(){
  for(var i=0; i<numTorus; i++){
    tabTorus[i].b.position.z+=text.speed;
    tabTorus[i].b.rotation.z+=i*text.rotation/10000;
    if(tabTorus[i].b.position.z>0)
    {
      tabTorus[i].b.position.z=-1000;
    }
  }
}

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 );
    mouseY = ( event.clientY - windowHalfY );
}

// Render
function render() {
  requestAnimationFrame( render);

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

renderer.render(scene, camera);
  update();
}

render();

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