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我在繪製Helix Curve時出現此錯誤。我添加了最新的Curve.js和TubeGeormetry.js。這是因爲Canvas渲染還是我做錯了什麼？我是這個例子http://mrdoob.github.com/three.js/examples/webgl_geometry_extrude_splines.htmlthree.js - 未捕獲TypeError：對象函數（）{}沒有方法'getTangentAt'TubeGeometry.js：175
<!DOCTYPE html>
<html lang="en">
<head>
<title>3d Model using HTML5 and three.js</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
body {
font-family: Monospace;
background-color: #f0f0f0;
margin: 0px;
overflow: hidden;
}
</style>
</head>
<body>
<script src="three.min.js" type="text/javascript"></script>
<script src="Curve.js" type="text/javascript"></script>
<script src="TubeGeometry.js" type="text/javascript"></script>
<script src="Stats.js" type="text/javascript"></script>
<script src="Detector.js" type="text/javascript"></script>
<script>
// variables
var container, stats;
var camera, scene, renderer, splineCamera, cameraHelper, cameraEye;
var text, plane, tube, tubeMesh, parent;
var targetRotation = 0;
var targetRotationOnMouseDown = 0;
var mouseX = 0;
var mouseXOnMouseDown = 0;
var windowHalfX = window.innerWidth/2;
var windowHalfY = window.innerHeight/2;
var binormal = new THREE.Vector3();
var normal = new THREE.Vector3();
// extrudePath, Helix Curve
extrudePath = new THREE.Curve.create(
function() {
},
function(t) {
var a = 30; // radius
var b = 150; //height
var t2 = 2 * Math.PI * t * b/30;
var tx = Math.cos(t2) * a,
ty = Math.sin(t2) * a,
tz = b * t;
return new THREE.Vector3(tx, ty, tz);
}
);
// Tube Geometry
var segments = 400;
var closed = false;
var debug = false;
var radiusSegments = 12;
// add tube
addTube();
function addTube()
{
alert('hello');
tube = new THREE.TubeGeometry(extrudePath, segments, 2, radiusSegments, closed, debug);
// Tube Mesh
tubeMesh = THREE.SceneUtils.createMultiMaterialObject(tube, [
new THREE.MeshLambertMaterial({
color: color,
opacity: geometry.debug ? 0.2 : 0.8,
transparent: true
}),
new THREE.MeshBasicMaterial({
color: 0x000000,
opacity: 0.5,
wireframe: true
})]);
parent.add(tubeMesh);
}
init();
animate();
function init(){
// container
container = document.createElement('div');
document.body.appendChild(container);
// info div
info = document.createElement('div');
info.style.position = 'absolute';
info.style.top = '10px';
info.style.width = '100%';
info.style.textAlign = 'center';
info.innerHTML = 'Drag to spin the cylinder<br/> You can identify cylinder face by clicking on it.</br>';
container.appendChild(info);
// camera
camera = new THREE.PerspectiveCamera(60, window.innerWidth/window.innerHeight, 1, 10000);
camera.position.set(0,150,400);
// scene
scene = new THREE.Scene();
camera.lookAt(scene.position);
// light
scene.add(new THREE.AmbientLight(0x404040));
light = new THREE.DirectionalLight(0xffffff);
light.position.set(0, 1, 0);
scene.add(light);
// CONTROLS
controls = new THREE.TrackballControls(camera);
// Grid
geometry = new THREE.Geometry();
geometry.vertices.push(new THREE.Vector3(- 500, 0, 0));
geometry.vertices.push(new THREE.Vector3(500, 0, 0));
for (var i = 0; i <= 20; i ++) {
line = new THREE.Line(geometry, new THREE.LineBasicMaterial({ color: 0x000000, opacity: 0.2 }));
line.position.z = (i * 50) - 500;
scene.add(line);
line = new THREE.Line(geometry, new THREE.LineBasicMaterial({ color: 0x000000, opacity: 0.2 }));
line.position.x = (i * 50) - 500;
line.rotation.y = 90 * Math.PI/180;
scene.add(line);
}
parent = new THREE.Object3D();
parent.position.y = 100;
scene.add(parent);
// projector
projector = new THREE.Projector();
// renderer
renderer = new THREE.CanvasRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
container.appendChild(renderer.domElement);
// stats
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.top = '0px';
container.appendChild(stats.domElement);
document.addEventListener('mousedown', onDocumentMouseDown, false);
document.addEventListener('mouseover', onDocumentMouseOver, false);
document.addEventListener('touchstart', onDocumentTouchStart, false);
document.addEventListener('touchmove', onDocumentTouchMove, false);
window.addEventListener('resize', onWindowResize, false);
}
function onWindowResize() {
camera.left = window.innerWidth/- 2;
camera.right = window.innerWidth/2;
camera.top = window.innerHeight/2;
camera.bottom = window.innerHeight/- 2;
camera.aspect = window.innerWidth/window.innerHeight;
//camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function onDocumentMouseDown(event) {
event.preventDefault();
document.addEventListener('mousemove', onDocumentMouseMove, false);
document.addEventListener('mouseup', onDocumentMouseUp, false);
document.addEventListener('mouseout', onDocumentMouseOut, false);
mouseXOnMouseDown = event.clientX - windowHalfX;
targetRotationOnMouseDown = targetRotation;
}
function onDocumentMouseMove(event) {
mouseX = event.clientX - windowHalfX;
targetRotation = targetRotationOnMouseDown + (mouseX - mouseXOnMouseDown) * 0.02;
}
function onDocumentMouseUp(event) {
document.removeEventListener('mousemove', onDocumentMouseMove, false);
document.removeEventListener('mouseup', onDocumentMouseUp, false);
document.removeEventListener('mouseout', onDocumentMouseOut, false);
}
function onDocumentMouseOut(event) {
document.removeEventListener('mousemove', onDocumentMouseMove, false);
document.removeEventListener('mouseup', onDocumentMouseUp, false);
document.removeEventListener('mouseout', onDocumentMouseOut, false);
}
function onDocumentMouseOver(event) {
document.removeEventListener('mousemove', onDocumentMouseMove, false);
document.removeEventListener('mouseup', onDocumentMouseUp, false);
document.removeEventListener('mouseout', onDocumentMouseOut, false);
}
function onDocumentTouchStart(event) {
if (event.touches.length === 1) {
event.preventDefault();
mouseXOnMouseDown = event.touches[ 0 ].pageX - windowHalfX;
targetRotationOnMouseDown = targetRotation;
}
}
function onDocumentTouchMove(event) {
if (event.touches.length === 1) {
event.preventDefault();
mouseX = event.touches[ 0 ].pageX - windowHalfX;
targetRotation = targetRotationOnMouseDown + (mouseX - mouseXOnMouseDown) * 0.05;
}
}
function animate() {
requestAnimationFrame(animate);
render();
update();
}
function update()
{
controls.update();
stats.update();
}
function render() {
parent.rotation.y += (targetRotation - parent.rotation.y) * 0.05;
camera.updateMatrixWorld();
renderer.render(scene, camera);
}
</script>
</body>
</html>