2015-04-27 90 views
0

這是一個JS Fiddle,它顯示了我目前的狀態。我想添加一個文字3D/2D並不重要。文本應該隨着白色圓圈的旋轉一起旋轉。只要獲得預期的結果,任何方法都是優選的。這是代碼。將文字添加到three.js中的對象(白色圓圈)

three.js所代碼提前

var SCREEN_WIDTH = window.innerWidth, 
    SCREEN_HEIGHT = window.innerHeight, 

    mouseX = 0, 
    mouseY = 0, 

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

    SEPARATION = 200, 
    AMOUNTX = 100, 
    AMOUNTY = 10, 

    camera, scene, renderer; 

init(); 
animate(); 

function init() { 

    var container, separation = 100, 
     amountX = 50, 
     amountY = 50, 
     particles, particle; 

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

    camera = new THREE.PerspectiveCamera(75, SCREEN_WIDTH/SCREEN_HEIGHT, 1, 10000); 
    camera.position.y = 5800; 
    camera.position.z = 1000; 

    scene = new THREE.Scene(); 

    renderer = new THREE.CanvasRenderer({ 
     alpha: true 
    }); 
    renderer.setPixelRatio(window.devicePixelRatio); 

    renderer.setSize(SCREEN_WIDTH, SCREEN_HEIGHT); 
    container.appendChild(renderer.domElement); 

    // particles 

    var PI2 = Math.PI * 2; 
    var material = new THREE.SpriteCanvasMaterial({ 

     color: 0xffffff, 
     program: function (context) { 

      context.beginPath(); 
      context.arc(0, 0, 9.5, 0, PI2, true); 
      context.fill(); 

     } 

    }); 
    for (var i = 0; i < 1000; i++) { 

     particle = new THREE.Sprite(material); 
     particle.position.x = Math.random() * 2 - 1; 
     particle.position.y = Math.random() * 2 - 1; 
     particle.position.z = Math.random() * 2 - 1; 

     particle.position.normalize(); 
     particle.position.multiplyScalar(Math.random() * 10 + 450); 
     particle.scale.multiplyScalar(10); 
     scene.add(particle); 

    } 

    // lines 

    for (var i = 0; i < 300; i++) { 

     var geometry = new THREE.Geometry(); 

     var vertex = new THREE.Vector3(Math.random() * 2 - 1, Math.random() * 2 - 1, Math.random() * 2 - 1); 
     vertex.normalize(); 
     vertex.multiplyScalar(1850); 

     geometry.vertices.push(vertex); 

     var vertex2 = vertex.clone(); 
     vertex2.multiplyScalar(Math.random() * 0.3 + 1); 

     geometry.vertices.push(vertex2); 

     var line = new THREE.Line(geometry, new THREE.LineBasicMaterial({ 
      color: 0xffffff, 
      opacity: Math.random() 
     })); 
     scene.add(line); 
    } 

    document.addEventListener('mousemove', onDocumentMouseMove, false); 
    document.addEventListener('touchstart', onDocumentTouchStart, false); 
    document.addEventListener('touchmove', onDocumentTouchMove, 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; 
    mouseY = event.clientY - windowHalfY; 
} 

function onDocumentTouchStart(event) { 

    if (event.touches.length > 1) { 

     event.preventDefault(); 

     mouseX = event.touches[0].pageX - windowHalfX; 
     mouseY = event.touches[0].pageY - windowHalfY; 

    } 

} 

function onDocumentTouchMove(event) { 

    if (event.touches.length == 1) { 

     event.preventDefault(); 

     mouseX = event.touches[0].pageX - windowHalfX; 
     mouseY = event.touches[0].pageY - windowHalfY; 

    } 

} 

// 

function animate() { 

    requestAnimationFrame(animate); 

    render(); 

} 

function render() { 

    camera.position.x += (mouseX - camera.position.x) * .05; 
    camera.position.y += (-mouseY + 200 - camera.position.y) * .05; 

    camera.lookAt(scene.position); 

    renderer.render(scene, camera); 

} 

感謝。

+0

「我想補充一個3D/2D文本無關緊要。「 - 這沒有意義 –

+0

:P我是新手,如果聽起來很有趣,我只想在那裏添加一些文字「Hello World」。 –

回答

1

簡單的3D文字,我發現它在一箇舊文件我有: 您需要的源太:

<script src="http://mrdoob.github.com/three.js/examples/fonts/helvetiker_regular.typeface.js"></script> 

var MyWords = "Thomas Sebastian"; 
var shape = new THREE.TextGeometry(MyWords, {font: 'helvetiker',size:'24',curveSegments: 20, weight: 'normal',height : 4,hover:30}); 
var wrapper = new THREE.MeshPhongMaterial({color: 0x65676,ambient: 0x030303, specular: 0x009900, shininess: 30}); 
var words = new THREE.Mesh(shape, wrapper); 
words.position.x=-80; 
words.position.z=0; 
words.position.y=20; 
scene.add(words); 

結果:)

enter image description here

+0

謝謝..我會試試這個,回覆你.. –

+0

哇!這工作。但有一個嚴重的性能影響..是否預計? –

+0

你總是可以放下細分 – Careen