three实现文字粒子化吸入动画效果代码-html代码-BFW代码库

代码语言：html

所属分类：动画

代码描述：three实现文字粒子化吸入动画效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en" >

<head>

  <meta charset="UTF-8">
  

  
  
<style>
body {
	margin: 0;
	overflow: hidden;
}

#instructions {
	position: absolute;
	color: #666;
	bottom: 0;
	padding-bottom: 6px;
	font-family: sans-serif;
	width: 100%;
	text-align: center;
	pointer-events: none;
}
</style>




</head>

<body>


<div id="three-container"></div>

<div id="instructions">
	click and drag to control the animation
</div>

<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/three.75.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/bas.min.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/TextGeometry.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/FontUtils.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/pnltri.min.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/droid_sans_bold.typeface.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/TweenMax.min.js"></script>
  <script>
	THREE.ShapeUtils.triangulateShape = (function () {
	        var pnlTriangulator = new PNLTRI.Triangulator();
	        return function triangulateShape(contour, holes) {
	            return pnlTriangulator.triangulate_polygon([contour].concat(holes));
	        };
	    })();
</script>
      <script >
window.onload = init;

function init() {
  var root = new THREERoot({
    createCameraControls: false,
    fov: 10 });

  root.renderer.setClearColor(0xffffff);
  root.renderer.setPixelRatio(window.devicePixelRatio || 1);
  root.camera.position.set(0, 0, 1400);

  var textAnimation = createTextAnimation();
  root.scene.add(textAnimation);

  var tween = TweenMax.fromTo(textAnimation, 4,
  { animationProgress: 0 },
  { animationProgress: 1, ease: Power1.easeInOut, repeat: -1, yoyo: true });

  createTweenScrubber(tween);
}

function createTweenScrubber(tween, seekSpeed) {
  seekSpeed = seekSpeed || 0.001;

  function stop() {
    TweenMax.to(tween, 2, { timeScale: 0 });
  }

  function resume() {
    TweenMax.to(tween, 2, { timeScale: 1 });
  }

  function seek(dx) {
    var progress = tween.progress();
    var p = THREE.Math.clamp(progress + dx * seekSpeed, 0, 1);

    tween.progress(p);
  }

  var _cx = 0;

  // desktop
  var mouseDown = false;
  document.body.style.cursor = 'pointer';

  window.addEventListener('mousedown', function (e) {
    mouseDown = true;
    document.body.style.cursor = 'ew-resize';
    _cx = e.clientX;
    stop();
  });
  window.addEventListener('mouseup', function (e) {
    mouseDown = false;
    document.body.style.cursor = 'pointer';
    resume();
  });
  window.addEventListener('mousemove', function (e) {
    if (mouseDown === true) {
      var cx = e.clientX;
      var dx = cx - _cx;
      _cx = cx;

      seek(dx);
    }
  });
  // mobile
  window.addEventListener('touchstart', function (e) {
    _cx = e.touches[0].clientX;
    stop();
    e.preventDefault();
  });
  window.addEventListener('touchend', function (e) {
    resume();
    e.preventDefault();
  });
  window.addEventListener('touchmove', function (e) {
    var cx = e.touches[0].clientX;
    var dx = cx - _cx;
    _cx = cx;

    seek(dx);
    e.preventDefault();
  });
}

function createTextAnimation() {
  var geometry = generateTextGeometry('CODE.BFW.WIKI', {
    size: 14,
    height: 0,
    font: 'droid sans',
    weight: 'bold',
    style: 'normal',
    bevelSize: 0.75,
    bevelThickness: 0.50,
    bevelEnabled: true,
    anchor: { x: 0.5, y: 0.5, z: 0.5 } });


  THREE.BAS.Utils.separateFaces(geometry);

  return new TextAnimation(geometry);
}

function generateTextGeometry(text, params) {
  var geometry = new THREE.TextGeometry(text, params);

  geometry.computeBoundingBox();

  geometry.userData = {};
  geometry.userData.size = {
    width: geometry.boundingBox.max.x - geometry.boundingBox.min.x,
    height: geometry.boundingBox.max.y - geometry.boundingBox.min.y,
    depth: geometry.boundingBox.max.z - geometry.boundingBox.min.z };


  var anchorX = geometry.userData.size.width * -params.anchor.x;
  var anchorY = geometry.userData.size.height * -params.anchor.y;
  var anchorZ = geometry.userData.size.depth * -params.anchor.z;
  var matrix = new THREE.Matrix4().makeTranslation(anchorX, anchorY, anchorZ);

  geometry.applyMatrix(matrix);

  return geometry;
}

////////////////////
// CLASSES
////////////////////

function TextAnimation(textGeometry) {
  var buffe.........完整代码请登录后点击上方下载按钮下载查看