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I'm trying to create a Cylinder but with no success. This is my code:
geometry02 = new THREE.CylinderGeometry( 20, 100, 100, 1000 );
material02 = new THREE.MeshBasicMaterial({color: 0x0000ff});
cylinder02 = new THREE.Mesh( geometry02, material02 );
cylinder02.position.x = 300;
scene.addObject( cylinder02 );
Am I forgetting to include something?
I'm trying to create a Cylinder but with no success. This is my code:
geometry02 = new THREE.CylinderGeometry( 20, 100, 100, 1000 );
material02 = new THREE.MeshBasicMaterial({color: 0x0000ff});
cylinder02 = new THREE.Mesh( geometry02, material02 );
cylinder02.position.x = 300;
scene.addObject( cylinder02 );
Am I forgetting to include something?
Share Improve this question edited Nov 28, 2011 at 10:32 Bart 20k8 gold badges71 silver badges79 bronze badges asked Nov 28, 2011 at 7:50 BorisDBorisD 2,2615 gold badges25 silver badges35 bronze badges 1- 5 What happens when you try this? Do you get an error message of some kind? – Tobbe Commented Nov 28, 2011 at 7:53
2 Answers
Reset to default 7There is nothing wrong with the snippet you just posted. I can confirm it runs ok if I paste in an example.
Make sure that:
- There aren't any javascript errors (check your browser's Console)
- The camera is pointing in the right direction (as anshulkatta mentions,
camera.lookAt(yourObject);is a good way to do that) - Your model's position/scale has decent values/is within the camera's frustrum/visible area
As a side note, you might want to decrease the segmentsRadius parameter(1000) to a smaller value. You might get a similar look/level detail with less vertices/faces.
Please try below code
<!DOCTYPE html>
<html lang="en">
<head>
<title>3d cylinder</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="Stats.js" type="text/javascript"></script>
<script src="Detector.js" type="text/javascript"></script>
<script>
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
var container, stats;
var camera, scene, renderer, light;
var cylinder, line, geometry;
var targetRotation = 0;
var targetRotationOnMouseDown = 0;
var mouseX = 0;
var mouseXOnMouseDown = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
init();
animate();
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
var 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';
container.appendChild( info );
// camera
camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 20000 );
camera.position.y = 100;
camera.position.z = 800;
// scene
scene = new THREE.Scene();
// light
scene.add( new THREE.AmbientLight( 0x404040 ) );
light = new THREE.DirectionalLight( 0xffffff );
light.position.set( 0, 1, 0 );
scene.add( light );
// texture
var map = THREE.ImageUtils.loadTexture( 'ash_uvgrid01.jpg' );
map.wrapS = map.wrapT = THREE.RepeatWrapping;
map.anisotropy = 16;
materials = [
new THREE.MeshLambertMaterial( { ambient: 0xbbbbbb, map: map, side: THREE.DoubleSide } ),
new THREE.MeshBasicMaterial( { color: 0xffffff, wireframe: true, transparent: true, opacity: 0.1, side: THREE.DoubleSide } )
];
// 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 );
}
// cylinder
cylinder = THREE.SceneUtils.createMultiMaterialObject( new THREE.CylinderGeometry( 50, 50, 200, 25, 10, false ), materials );
cylinder.overdraw = true;
scene.add(cylinder);
// 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( '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 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();
stats.update();
}
function render() {
cylinder.rotation.y += ( targetRotation - cylinder.rotation.y ) * 0.05;
renderer.render( scene, camera );
}
</script>
</body>
</html>
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