I'm trying to animate an exported model(from 3dsmax -> dae file -> json) with animations using three.js. I am not getting any console errors but rather just a blank screen. Anyone have any ideas on why this is happening? I'm happy to also include json, png's, max file, dae file or any other resource that may be of help. Any help would be much appreciated. I'm stuck...here is the javascript:
<script>
var camera, scene, renderer, animmesh;
var clock = new THREE.Clock();
function init() {
camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 );
camera.position.z = 5;
scene = new THREE.Scene();
scene.add(camera);
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
var loader = new THREE.JSONLoader();
loader.load("../../assets/model-threejs.json", function (model, material) {
createScene(model, material);
});
}
function createScene(model, material) {
material[0].skinning = true;
animmesh = new THREE.SkinnedMesh(model, material[0]);
scene.add(animmesh);
}
function render() {
renderer.render(scene, camera);
}
init();
render();
</script>
You had several problems. 1) Your elephant was so big it was off the screen. 2) You need to tell the camera to look at the origin. 3) When you simplified the code you made it too simple, you still need the animate loop.
This code works (since I didn't have your PNG files, I used a MeshNormalMaterial):
var camera, scene, renderer, animmesh, controls;
var clock = new THREE.Clock();
function init() {
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 );
camera.position.x = -900;
scene.add(camera);
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setSize( window.innerWidth*.9, window.innerHeight*.9 );
document.body.appendChild( renderer.domElement );
var loader = new THREE.JSONLoader();
loader.load("model-threejs.json", function (model, material) {
animmesh = new THREE.Mesh(model, new THREE.MeshNormalMaterial());
scene.add(animmesh);
animate();
});
}
function animate() {
requestAnimationFrame( animate );
render();
}
function render() {
renderer.render(scene, camera);
camera.lookAt(new THREE.Vector3(0,0,0));
}
init();
Related
Im having troubles with Orbitcontrols. I have my threee js model and i want it to autorotate when the page is loaded for the first time but for some reason it does not work properly. The 3d model stand still as if the command line was not considered.
Here is the code where i initialize the function:
the init() function where i declare my model and add them to the scene:
controls.autoRotate=true
controls.addEventListener('change', render);
render();
the render function:
function render() {
renderer.render(scene, camera);
}
Please note that i can move my model as i wish in my page but the automatic rotation does not seem to be triggered.
Using OrbitControls.autoRotate only works if you call controls.update() in your animation loop. You can't use automatic rotation in combination with on-demand rendering (meaning by utilizing the change event listener of the controls).
let camera, scene, renderer, controls;
init();
animate();
function init() {
camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.01, 10 );
camera.position.z = 1;
scene = new THREE.Scene();
const geometry = new THREE.BoxGeometry( 0.2, 0.2, 0.2 );
const material = new THREE.MeshNormalMaterial();
const mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
controls = new THREE.OrbitControls( camera, renderer.domElement );
controls.autoRotate = true;
}
function animate() {
requestAnimationFrame( animate );
controls.update();
renderer.render( scene, camera );
}
body {
margin: 0;
}
<script src="https://cdn.jsdelivr.net/npm/three#0.124/build/three.js"></script>
<script src="https://cdn.jsdelivr.net/npm/three#0.124/examples/js/controls/OrbitControls.js"></script>
I'm trying to work out camera navigation functionality in threejs, using THREE.OrbitControls. Even though I'm following a guide, I just can't seem to get it working.
The link to my fiddle code is: https://jsfiddle.net/Matty1/uc671jbL/18/
It's on line 18/19 of the javascript:
const controls = new THREE.OrbitControls( camera, renderer.domElement );
controls.update();
Any advice would be appreciated.
You have included OrbitControls from a relative path in your fiddle. Try it like so:
const scene = new THREE.Scene();
scene.background = new THREE.Color(0x19d7f8);
const camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 );
camera.position.set(0,0,5);
const renderer = new THREE.WebGLRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
window.addEventListener('resize', function(){
var width = window.innerWidth;
var height = window.innerHeight;
renderer.setSize(width, height);
camera.aspect = width/height;
camera.updateProjectionMatrix;
} )
const controls = new THREE.OrbitControls( camera, renderer.domElement );
const geometry = new THREE.BoxGeometry();
const material = new THREE.MeshBasicMaterial( { color: 0x00ff00 } );
const cube = new THREE.Mesh( geometry, material );
scene.add( cube );
function animate() {
requestAnimationFrame( animate );
renderer.render( scene, camera );
}
animate();
body {
margin: 0;
}
<script src="https://cdn.jsdelivr.net/npm/three#0.124/build/three.js"></script>
<script src="https://cdn.jsdelivr.net/npm/three#0.124/examples/js/controls/OrbitControls.js"></script>
I am trying to add Orbit Controls to my scene without success. The code below keeps giving me an error Uncaught TypeError: THREE.OrbitControls is not a constructor. I have tried different solutions I came across the web but, the error still persists. What am I doing wrong?
Pseudocode
Add Orbit Controls
Be able to use Orbit Controls in the scene
Thank you in advance.
Codepen
HTML
<html>
<head>
<title>My first three.js app</title>
<style>
body { margin: 0; }
canvas { width: 100%; height: 100% }
</style>
</head>
<body>
<script src="js/three.js"></script>
<script src="https://82mou.github.io/threejs/js/OrbitControls.js"></script>
</body>
</html>
JS
var renderer = new THREE.WebGLRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
var scene = new THREE.Scene();
// var camera = new THREE.PerspectiveCamera( 75, window.innerWidth/window.innerHeight, 0.1, 1000 );
// var renderer = new THREE.WebGLRenderer();
// renderer.setSize( window.innerWidth, window.innerHeight );
// document.body.appendChild( renderer.domElement );
// CAMERA
var camera = new THREE.PerspectiveCamera(75, 320 / 240, 1, 1000);
camera.position.set(250, 200, 250);
camera.lookAt(0, 0, 0);
// add controls for the camera
var controls = new THREE.OrbitControls(camera);
var geometry = new THREE.PlaneGeometry(100, 50);
var material = new THREE.MeshBasicMaterial( { color: 0xFFFFFF } );
var plane = new THREE.Mesh( geometry, material );
scene.add( plane );
camera.position.z = 200;
var animate = function () {
requestAnimationFrame( animate );
controls.update();
// plane.rotation.x += 0.01;
// plane.rotation.y += 0.01;
renderer.render( scene, camera );
};
animate();
There is an issue in your codepen. When you import OrbitControls via ES6 imports, it's not necessary to use the THREE namespace. So when doing something like this:
import { OrbitControls } from "https://unpkg.com/three#0.112/examples/jsm/controls/OrbitControls.js";
you have to to create OrbitControls like so:
controls = new OrbitControls( camera, renderer.domElement );
Live example: https://jsfiddle.net/68kzagry/1/
I have been trying various options for all day to solve my problem. I was also trying various examples posted here in previous years. Although my problem is still unsolved and my objects are not appearing.
I was trying 3 different formats: .json, .js and now .mtl with.obj. My current code looks like this:
function addModels() {
var mtlLoader = new THREE.MTLLoader();
mtlLoader.load("../models/lampa.mtl", function (materials) {
materials.preload();
var objLoader = new THREE.OBJLoader();
objLoader.setMaterials(materials);
objLoader.load("../models/lampa.obj", function (mesh) {
mesh.scale.set(1,1,1);
mesh.position.set(0,0,0);
scene.add(mesh);
})
})
And this is html file with the script running canvas.
var camera;
var scene;
var renderer = new THREE.WebGLRenderer();
var controls;
//Simple functions to initialise scene and render it.
initialise();
render();
//animate();
//add models
addModels();
function initialise() {
// Create a scene
scene = new THREE.Scene();
// Add the camera
camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 1000);
camera.position.set(0, 100, 250);
// Add scene elements
addWalls();
addKerbs();
// Add lights
addLights();
// Create the WebGL Renderer
renderer = new THREE.WebGLRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
//add Grass
createGrass();
addGrass();
// Append the renderer to the body
document.body.appendChild( renderer.domElement );
// Add a resize event listener
window.addEventListener( 'resize', Resize, false );
// Add the orbit controls
controls = new THREE.OrbitControls(camera, renderer.domElement);
controls.target = new THREE.Vector3(0, 100, 0);
}
//rendering function
function render() {
renderer.render( scene, camera );
requestAnimationFrame( render );
controls.update();
}
//Window resize.
function Resize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function animate() {
requestAnimationFrame(animate);
render();
status.update();
renderer.render(scene,camera);
}
When addModels() is in initialise function, but it throws an error like this:
Every answer is appreciated. Thank you.
I am really sorry for every trouble. It appears that everything is fine here, just three.js was out of date...
I've encountered one strange problem with displaying collada model in three.js
I suspect that something wrong with the logic of the script but I can't figure out.
The problem is that the Collada model is displayed black till a user moves a mouse (orbit controls). Only after this the model gets lighted.
So, initially, when the page loads, the model is black and this is confusing a user.
What's wrong with the code? Where could be the error?
The code of the script is the following:
<script>
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
var container, stats;
var camera, controls, scene, renderer;
var pointLight;
init();
render();
function animate()
{
pointLight.position.copy( camera.position );
requestAnimationFrame(animate);
controls.update();
}
function init() {
camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 10000 );
camera.position.set( -40, 70, 70 );
controls = new THREE.OrbitControls( camera );
controls.damping = 0.2;
controls.addEventListener( 'change', render );
scene = new THREE.Scene();
// world
var mesh;
var loader = new THREE.ColladaLoader();
loader.load('./models/collada/test.dae', function (result) {
mesh = result.scene;
mesh.scale.set(0.3, 0.3, 0.3);
scene.add(mesh);
render();
});
// lights
var hemLight = new THREE.HemisphereLight(0x000000, 0x303030, 0.8);
scene.add(hemLight);
pointLight = new THREE.PointLight( 0xffffff, 1.1 );
pointLight.position.copy( camera.position );
scene.add( pointLight );
// renderer
renderer = new THREE.WebGLRenderer({antialias:true, alpha:true});
renderer.setClearColor(0xEEEEEE, 1);
renderer.shadowMapType = THREE.PCFSoftShadowMap;
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container = document.getElementById( 'container' );
container.appendChild( renderer.domElement );
window.addEventListener( 'resize', onWindowResize, false );
animate();
}
function onWindowResize()
{
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
render();
}
function render()
{
renderer.render( scene, camera );
}
</script>
You're not calling render() from your animate() function, so the scene is only rendered through the OrbitControls onChange event. Add render() at the end of animate() and it will work. You can also then remove the onChange callback, since you'll be rendering steadily.