Is it possible to dynamically change the dimensions of a 3D cylinder created using Three.js, similar to how we can adjust the size of a cube in this live example: http://jsfiddle.net/EtSf3/4/
Below is the code I have for the cylinder:
HTML:
<script src="http://www.html5canvastutorials.com/libraries/three.min.js"></script>
<div id="container"></div>
JS
//Script for 3D Cylinder
// revolutions per second
var angularSpeed = 0.2;
var lastTime = 0;
var cylinder = null;
// this function is executed on each animation frame
function animate() {
// update
var time = (new Date()).getTime();
var timeDiff = time - lastTime;
var angleChange = angularSpeed * timeDiff * 2 * Math.PI / 1000;
cylinder.rotation.x += angleChange;
cylinder.rotation.z += angleChange;
lastTime = time;
// render
renderer.render(scene, camera);
// request new frame
requestAnimationFrame(function () {
animate();
});
}
// renderer
var container = document.getElementById("container");
var renderer = new THREE.WebGLRenderer();
renderer.setSize(container.offsetWidth, container.offsetHeight);
container.appendChild(renderer.domElement);
// camera
var camera = new THREE.PerspectiveCamera(50, window.innerWidth / window.innerHeight, 1, 1000);
camera.position.z = 700;
// scene
var scene = new THREE.Scene();
// cylinder
// API: THREE.CylinderGeometry(bottomRadius, topRadius, height, segmentsRadius, segmentsHeight)
cylinder = new THREE.Mesh(new THREE.CylinderGeometry(150, 150, 500, 100, 100, false), new THREE.MeshPhongMaterial({
// light
specular: '#cccccc',
// intermediate
color: '#666666',
// dark
emissive: '#444444',
shininess: 100
}));
cylinder.overdraw = true;
cylinder.rotation.x = Math.PI * 0.2;
//cylinder.rotation.y = Math.PI * 0.5;
scene.add(cylinder);
// add subtle ambient lighting
var ambientLight = new THREE.AmbientLight(0x444444);
scene.add(ambientLight);
// directional lighting
var directionalLight = new THREE.DirectionalLight(0xcccccc);
directionalLight.position.set(1, 1, 1).normalize();
scene.add(directionalLight);
// initiate animation
animate();
Here is the corresponding Fiddle: http://jsfiddle.net/dpPjD/
If you require further information or have any suggestions, feel free to reach out.