import * as THREE from '/build/three.module.js';
let scene, camera, renderer, gridHelper;
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 10000);
camera.position.set(0, 1500, 0);
camera.lookAt(0, 0, 0);
renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth/2, window.innerHeight);
const container = document.getElementById('smallContainer');
container.appendChild(renderer.domElement);
// Grid
gridHelper = new THREE.GridHelper(500, 4, 0xffffff, 0xff0000);
scene.add(gridHelper);
I have a gridhelper and i want to change its width and height manually
, how can i do it? can i scale? this is my code.
const v = new THREE.Vector3(1, 1/2, 1);
gridHelper.addScaledVector(v, 1);
I try the code above and didn't work.
gridHelper.addScaledVector(v, 1);
This code produce a runtime error since GridHelper has no method addScaledVector().
Try to modulate the scale property instead.
let camera, scene, renderer;
init();
animate();
function init() {
camera = new THREE.PerspectiveCamera(70, window.innerWidth / window.innerHeight, 0.1, 100);
camera.position.set(5, 5, 5);
scene = new THREE.Scene();
camera.lookAt(scene.position);
const helper = new THREE.GridHelper();
helper.scale.setScalar(2);
scene.add(helper);
renderer = new THREE.WebGLRenderer({
antialias: true
});
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
}
function animate() {
requestAnimationFrame(animate);
renderer.render(scene, camera);
}
body {
margin: 0;
}
<script src="https://cdn.jsdelivr.net/npm/three#0.123/build/three.js"></script>
Related
const scene = new THREE.Scene();
const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
const controls = new OrbitControls(camera);
camera.position.set(200, 0, 0);
controls.update();
const geometry = new THREE.SphereGeometry(50, 32, 32);
const material = new THREE.MeshBasicMaterial({
color: 0xffff00
});
const sphere = new THREE.Mesh(geometry, material);
scene.add(sphere);
const renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
function animate() {
requestAnimationFrame(animate);
controls.update();
renderer.render(scene, camera);
}
<script src="https://cdn.jsdelivr.net/npm/three#0.129.0/build/three.min.js"></script>
When I run my javascript code. I get the following error "Uncaught ReferenceError: OrbitControls is not defined".
I saw this post about it, but it doesn't seem to help.
Any ideas?
My OrbitControls.js is in the same file under the three.js file
I got your code running without errors by importing OrbitControls and defining your renderer at the top and passing it into OrbitControls.
Edit, I added a second snippet that was adapted from a three.js example on their site that I think adds the yellow sphere you're looking for.
let camera, controls, scene, renderer;
init();
//render(); // remove when using next line for animation loop (requestAnimationFrame)
animate();
function init() {
scene = new THREE.Scene();
scene.background = new THREE.Color(0xcccccc);
scene.fog = new THREE.FogExp2(0xcccccc, 0.002);
renderer = new THREE.WebGLRenderer({
antialias: true
});
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
camera = new THREE.PerspectiveCamera(60, window.innerWidth / window.innerHeight, 1, 1000);
camera.position.set(400, 200, 0);
// controls
controls = new THREE.OrbitControls(camera, renderer.domElement);
//controls.addEventListener( 'change', render ); // call this only in static scenes (i.e., if there is no animation loop)
controls.enableDamping = true; // an animation loop is required when either damping or auto-rotation are enabled
controls.dampingFactor = 0.05;
controls.screenSpacePanning = false;
controls.minDistance = 100;
controls.maxDistance = 500;
controls.maxPolarAngle = Math.PI / 2;
// world
const geometry = new THREE.SphereGeometry(50, 32, 32);
const material = new THREE.MeshBasicMaterial({
color: 0xffff00
});
const sphere = new THREE.Mesh(geometry, material);
scene.add(sphere);
//
window.addEventListener('resize', onWindowResize);
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function animate() {
requestAnimationFrame(animate);
controls.update(); // only required if controls.enableDamping = true, or if controls.autoRotate = true
render();
}
function render() {
renderer.render(scene, camera);
}
<script src="https://cdn.jsdelivr.net/npm/three#0.122.0/build/three.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/three#0.122.0/examples/js/controls/OrbitControls.min.js"></script>
let camera, controls, scene, renderer;
init();
//render(); // remove when using next line for animation loop (requestAnimationFrame)
animate();
function init() {
scene = new THREE.Scene();
scene.background = new THREE.Color(0xcccccc);
scene.fog = new THREE.FogExp2(0xcccccc, 0.002);
renderer = new THREE.WebGLRenderer({
antialias: true
});
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
camera = new THREE.PerspectiveCamera(60, window.innerWidth / window.innerHeight, 1, 1000);
camera.position.set(400, 200, 0);
// controls
controls = new THREE.OrbitControls(camera, renderer.domElement);
//controls.addEventListener( 'change', render ); // call this only in static scenes (i.e., if there is no animation loop)
controls.enableDamping = true; // an animation loop is required when either damping or auto-rotation are enabled
controls.dampingFactor = 0.05;
controls.screenSpacePanning = false;
controls.minDistance = 100;
controls.maxDistance = 500;
controls.maxPolarAngle = Math.PI / 2;
// world
const geometry = new THREE.SphereGeometry(50, 32, 32);
const material = new THREE.MeshBasicMaterial({
color: 0xffff00
});
const sphere = new THREE.Mesh(geometry, material);
scene.add(sphere);
//
window.addEventListener('resize', onWindowResize);
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function animate() {
requestAnimationFrame(animate);
controls.update(); // only required if controls.enableDamping = true, or if controls.autoRotate = true
render();
}
function render() {
renderer.render(scene, camera);
}
<script src="https://cdn.jsdelivr.net/npm/three#0.122.0/build/three.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/three#0.122.0/examples/js/controls/OrbitControls.min.js"></script>
I got this cubetexture in Three.js. Say I want to rotate the cubeTexture itself 180 degrees. I know I can do this by rotating the camera but I want to rotate the texture itself and not the camera. How can I achieve this?
I want to rotate the x axis of the cubeTexture causing it to display the opposite side. Something like texture.flipX = true; would be handy.
https://codepen.io/haangglide/pen/GRZPqaw
var camera, scene, box, renderer;
init();
animate();
function init() {
renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
scene = new THREE.Scene();
const texture = new THREE.CubeTextureLoader()
.setCrossOrigin('') .setPath('https://alca.tv/static/codepen/pens/common/SwedishRoyalCastle/').load(['px.jpg', 'nx.jpg', 'py.jpg', 'ny.jpg', 'pz.jpg', 'nz.jpg']);
scene.background = texture;
const geometry = new THREE.BoxGeometry(1, 1, 1);
const material = new THREE.MeshBasicMaterial({ color: new THREE.Color('skyblue') });
box = new THREE.Mesh(geometry, material);
scene.add(box);
camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
camera.position.z = 5;
scene.add(camera);
document.body.appendChild(renderer.domElement);
}
function animate() {
requestAnimationFrame(animate);
renderer.render(scene, camera);
}
Edit:
According to the following discussions it does not seem easy or even possible to do what you ask with ThreeJS, but in the first link it does mention that it may be possible with BabylonJS.
https://discourse.threejs.org/t/rotate-a-scenes-background-skybox-texture/12199
https://discourse.threejs.o9rg/t/rotate-a-scenes-background/3928/15
Original answer:
You didn't say which axis so I will just use the Y axis. I am also using 45 degrees instead of 180 so you can see it is working.
var camera, scene, box, renderer;
init();
animate();
function init() {
renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
scene = new THREE.Scene();
const texture = new THREE.CubeTextureLoader()
.setCrossOrigin('') .setPath('https://alca.tv/static/codepen/pens/common/SwedishRoyalCastle/').load(['px.jpg', 'nx.jpg', 'py.jpg', 'ny.jpg', 'pz.jpg', 'nz.jpg']);
scene.background = texture;
const geometry = new THREE.BoxGeometry(1, 1, 1);
const material = new THREE.MeshBasicMaterial({ color: new THREE.Color('skyblue') });
box = new THREE.Mesh(geometry, material);
///
///
///
///////////////////////////////
//since threejs uses radians, you will need a function to get radians from degrees
function getRadians(degrees) {
return Math.PI / 180 * degrees;
}
//using rotation.set(x, y, z)
box.rotation.set(0, getRadians(45), 0);
//directly setting the rotations
box.rotation.y = getRadians(45);
///////////////////////////////
///
///
///
scene.add(box);
camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
camera.position.z = 5;
scene.add(camera);
document.body.appendChild(renderer.domElement);
}
function animate() {
requestAnimationFrame(animate);
renderer.render(scene, camera);
}
<script src="https://threejs.org/build/three.js"></script>
I've been following this tutorial: https://www.youtube.com/watch?v=6oFvqLfRnsU in order to render basic shapes in three.js. At 18:20 he gets a sphere to show up in his scene.
var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera(75, window.innerWidth/window.innerHieght, 0.1, 1000);
camera.position.z = 5;
var renderer = new THREE.WebGLRenderer({antialias: true});
renderer.setClearColor("#e5e5e5");
renderer.setSize(window.innerWidth, window.innerHeight);
window.addEventListener('resize', () => {
renderer.setSize(window.innerWidth, window.innerHeight);
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
})
document.body.appendChild(renderer.domElement);
var geometry = new THREE.SphereGeometry(1,10,10);
var material = new THREE.MeshLambertMaterial({color: 0xFFCC00});
var mesh = new THREE.Mesh(geometry, material);
scene.add(mesh);
renderer.render(scene, camera);
My scene seems to be rendering since I have the light gray background but I can't get the black sphere to show up
There was a typo in your code:
var camera = new THREE.PerspectiveCamera(75, window.innerWidth/window.innerHieght, 0.1, 1000);
window.innerHieght must be window.innerHeight
var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
camera.position.z = 5;
var renderer = new THREE.WebGLRenderer({
antialias: true
});
renderer.setClearColor("#e5e5e5");
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
window.addEventListener('resize', () => {
renderer.setSize(window.innerWidth, window.innerHeight);
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
})
var light = new THREE.DirectionalLight(0xffffff, 0.5);
light.position.setScalar(10);
scene.add(light);
scene.add(new THREE.AmbientLight(0xffffff, 0.5));
var geometry = new THREE.SphereGeometry(1, 10, 10);
var material = new THREE.MeshLambertMaterial({
color: 0xFFCC00
});
var mesh = new THREE.Mesh(geometry, material);
scene.add(mesh);
renderer.render(scene, camera);
body {
overflow: hidden;
margin: 0;
}
<script src="https://threejs.org/build/three.min.js"></script>
I want to set the HTML background as clearColor in three.js?
This is my three.js code:
// init
var vWebGL = new WEBGL();
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);
var geometry = new THREE.BoxGeometry(1, 1, 1);
var material = new THREE.MeshBasicMaterial({ color: 0x00fdf0 });
var cube = new THREE.Mesh(geometry, material);
scene.add(cube);
camera.position.z = 5;
renderer.clearColor(0x000000, 0.0);
// Render Loop
function animate() {
renderer.setClearAlpha(0.0);
requestAnimationFrame(animate);
cube.rotation.x += 0.01;
cube.rotation.y += 0.01;
renderer.render(scene, camera);
}
if (vWebGL.isWebGLAvailable()) {
// Initiate function or other initializations here
animate();
} else {
var warning = vWebGL.getWebGLErrorMessage();
document.getElementById('container').appendChild(warning);
}
In My Webgl I can specify the HTML as clearColor.
gl.clearColor(0.0, 0.0, 0.0, 0.0);
gl.clear(gl.DEPTH_BUFFER_BIT | gl.COLOR_BUFFER_BIT);
My Webgl:
or
The background of a THREE.Scene can be set by setting the property .background:
e.g.
scene = new THREE.Scene();
scene.background = new THREE.Color(0xff0000); // red
If you want to have a transparent background, then the THREE.WebGLRenderer has to be initialized with the property {alpha: true}. The clear color and alpha channel have to be set 0, but this is default:
e.g.
renderer = new THREE.WebGLRenderer( { alpha: true } );
renderer.setClearColor( 0x000000, 0 );
See the example with a cube which is drawn over a background image:
(function onLoad() {
var container, loader, camera, scene, renderer, orbitControls;
init();
animate();
function init() {
container = document.getElementById('container');
renderer = new THREE.WebGLRenderer({
antialias: true,
alpha: true
});
renderer.setClearColor( 0x000000, 0 );
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
container.appendChild(renderer.domElement);
camera = new THREE.PerspectiveCamera(70, window.innerWidth / window.innerHeight, 1, 100);
camera.position.set(0, 1, -2);
loader = new THREE.TextureLoader();
loader.setCrossOrigin("");
scene = new THREE.Scene();
scene.add(camera);
window.onresize = resize;
var ambientLight = new THREE.AmbientLight(0x404040);
scene.add(ambientLight);
var directionalLight = new THREE.DirectionalLight( 0xffffff, 0.5 );
directionalLight.position.set(1,2,1.5);
scene.add( directionalLight );
orbitControls = new THREE.OrbitControls(camera);
addGridHelper();
createModel();
}
function createModel() {
var material = new THREE.MeshPhongMaterial({color:'#b090b0'});
var geometry = new THREE.BoxGeometry( 1, 1, 1 );
var mesh = new THREE.Mesh(geometry, material);
scene.add(mesh);
}
function addGridHelper() {
var helper = new THREE.GridHelper(100, 100);
helper.material.opacity = 0.25;
helper.material.transparent = true;
scene.add(helper);
var axis = new THREE.AxesHelper(1000);
scene.add(axis);
}
function resize() {
var aspect = window.innerWidth / window.innerHeight;
renderer.setSize(window.innerWidth, window.innerHeight);
camera.aspect = aspect;
camera.updateProjectionMatrix();
}
function animate() {
requestAnimationFrame(animate);
orbitControls.update();
render();
}
function render() {
renderer.render(scene, camera);
}
})();
#image-abs { position : absolute; top : 0; left : 0; z-index: -1; width: 100%; height: 100%; }
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/99/three.min.js"></script>
<script src="https://threejs.org/examples/js/controls/OrbitControls.js"></script>
<img id="image-abs" src="https://raw.githubusercontent.com/Rabbid76/graphics-snippets/master/resource/texture/background.jpg">
<div id="container"></div>
I want to control object like this:
Now camera is move around Y coordinate, but need to be move around NEW Y. Code is here:
var material = new THREE.MeshLambertMaterial({color: 0x00ff00});
var cube = new THREE.Mesh(geometry, material);
scene.add(cube);
var controls = new THREE.OrbitControls(camera);
cube.position.x = 300;
// controls.target = THREE.Vector3(300, 0, 0);
I found that target option can set the focus point of the controls, but if I add this code: controls.target = THREE.Vector3(300, 0, 0); the object back to the center of the screen, but it should be at the right edge.
More over, when I set new THREE.OrbitControls(camera); to new THREE.OrbitControls(cube); and add controls.target = THREE.Vector3(300, 0, 0); control doesn't work, but when I set controls.target = THREE.Vector3(301, 0, 0); it is managed but not like a camera
OrbitControls.target set the focus point of the controls and the .object orbits around this. But it is a manually manipulation. As mentioned in the documentation OrbitControls.update() must be called after any manual changes to the camera's transform.
e.g.
controls.target = new THREE.Vector3(1, 0, 0)
controls.update();
See the example:
(function onLoad() {
var container, camera, scene, renderer, controls;
init();
animate();
function init() {
container = document.getElementById('container');
renderer = new THREE.WebGLRenderer({
antialias: true
});
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.shadowMap.enabled = true;
container.appendChild(renderer.domElement);
camera = new THREE.PerspectiveCamera(70, window.innerWidth / window.innerHeight, 1, 100);
camera.position.set(0, 1.0, -4);
scene = new THREE.Scene();
scene.background = new THREE.Color(0xffffff);
scene.add(camera);
window.onresize = resize;
var ambientLight = new THREE.AmbientLight(0x404040);
scene.add(ambientLight);
var directionalLight = new THREE.DirectionalLight( 0xffffff, 0.5 );
directionalLight.position.set(1,2,1.5);
scene.add( directionalLight );
controls = new THREE.OrbitControls(camera, container);
controls.target = new THREE.Vector3(3, 0, 0)
controls.update();
controls.autoRotate = true;
controls.autoRotateSpeed = 5.0
var axis = new THREE.AxesHelper(1000);
scene.add(axis);
var material = new THREE.MeshPhongMaterial({color:'#b090b0'});
var geometry = new THREE.BoxGeometry( 1, 1, 1 );
var mesh = new THREE.Mesh(geometry, material);
scene.add(mesh);
}
function resize() {
var aspect = window.innerWidth / window.innerHeight;
renderer.setSize(window.innerWidth, window.innerHeight);
camera.aspect = aspect;
camera.updateProjectionMatrix();
}
function animate() {
requestAnimationFrame(animate);
controls.update();
render();
}
function render() {
renderer.render(scene, camera);
}
})();
<script src="https://cdn.jsdelivr.net/npm/three#0.115/build/three.js"></script>
<script src="https://cdn.jsdelivr.net/npm/three#0.115/examples/js/controls/OrbitControls.js"></script>
<div id="container"></div>