I want to import a blender model into three.js, but I havent been successful yet.
This is what I have:
<script src="GLTFLoader.js"></script>
// CHILDREN
children = new THREE.Object3D();
// Blender Model
var bld = (blend[4]).toString();
var loader = new THREE.GLTFLoader();
loader.load(bld,handle_load);
var mesh;
console.log(bld); // "/media/accounts/2878836292/2878836292.glb"
function handle_load(gltf) {
mesh = gltf.scene.children[0];
mesh.position.set(-50, 15, -50);
children.add(mesh);
// mesh.position.z = -10;
}
//cylinder
image = (images[0]).toString();
const texture1 = new THREE.TextureLoader().load(image);
const material1 = new THREE.MeshBasicMaterial({ map: texture1 });
geometry = new THREE.CylinderGeometry(0, 20, 40, 20);
var cylinder = new THREE.Mesh(geometry, material1);
cylinder.position.set(-90, 20, 30);
children.add(cylinder);
Blender Model: https://workupload.com/file/AEm5FgER
I don't get any errors in the web console.
Solved it. I had to scale the model up to 15mm to make it visible
Related
I have a GLTF version 1.0 model that I am importing into Three.js using LegacyGLTFLoader.js. When I do so, everything looks good, except that the model does not receive shadows. I am guessing that this is because the imported model's material is THREE.RawShaderMaterial, which does not support receiving shadows (I think). How can I fix this so that my imported model can receive shadows?
Here is sample code:
// Construct scene.
var scene = new THREE.Scene();
// Get window dimensions.
var width = window.innerWidth;
var height = window.innerHeight;
// Construct camera.
var camera = new THREE.PerspectiveCamera(75, width/height);
camera.position.set(20, 20, 20);
camera.lookAt(scene.position);
// Construct renderer.
var renderer = new THREE.WebGLRenderer();
renderer.setSize(width, height);
renderer.shadowMapEnabled = true;
document.body.appendChild(renderer.domElement);
// Construct cube.
var cubeGeometry = new THREE.BoxGeometry(10, 1, 10);
var cubeMaterial = new THREE.MeshPhongMaterial({color: 0x00ff00});
var cube = new THREE.Mesh(cubeGeometry, cubeMaterial);
cube.castShadow = true;
cube.translateY(15);
scene.add(cube);
// Construct floor.
var floorGeometry = new THREE.BoxGeometry(20, 1, 20);
var floorMaterial = new THREE.MeshPhongMaterial({color: 0x00ffff});
var floor = new THREE.Mesh(floorGeometry, floorMaterial);
floor.receiveShadow = true;
scene.add(floor);
// Construct light.
var light = new THREE.DirectionalLight(0xffffff);
light.position.set(0, 20, 0);
light.castShadow = true;
scene.add(light);
// Construct light helper.
var lightHelper = new THREE.DirectionalLightHelper(light);
scene.add(lightHelper);
// Construct orbit controls.
new THREE.OrbitControls(camera, renderer.domElement);
// Construct GLTF loader.
var loader = new THREE.LegacyGLTFLoader();
// Load GLTF model.
loader.load(
"https://dl.dropboxusercontent.com/s/5piiujui3sdiaj3/1.glb",
function(event) {
var model = event.scene.children[0];
var mesh = model.children[0];
mesh.receiveShadow = true;
scene.add(model);
},
null,
function(event) {
alert("Loading model failed.");
}
);
// Animates the scene.
var animate = function () {
requestAnimationFrame(animate);
renderer.render(scene, camera);
};
// Animate the scene.
animate();
Here are my resources:
https://dl.dropboxusercontent.com/s/y2r8bsrppv0oqp4/three.js
https://dl.dropboxusercontent.com/s/5wh92lnsxz2ge1e/LegacyGLTFLoader.js
https://dl.dropboxusercontent.com/s/1jygy1eavetnp0d/OrbitControls.js
https://dl.dropboxusercontent.com/s/5piiujui3sdiaj3/1.glb
Here is a JSFiddle:
https://jsfiddle.net/rmilbert/8tqc3yx4/26/
One way to fix the problem is to replace the instance of RawShaderMaterial with MeshStandardMaterial. To get the intended effect, you have to apply the existing texture to the new material like so:
var newMaterial = new THREE.MeshStandardMaterial( { roughness: 1, metalness: 0 } );
newMaterial.map = child.material.uniforms.u_tex.value;
You also have to compute normal data for the respective geometry so lighting can be computed correctly. If you need no shadows, the unlint MeshBasicMaterial is actually the better choice.
Updated fiddle: https://jsfiddle.net/e67hbj1q/2/
I am having trouble figuring out how to set a PlaneGeometry to a good aspect ratio based on the image size.
var material = new THREE.MeshBasicMaterial({
map : THREE.ImageUtils.loadTexture('img/bunny.png')
});
var plane = new THREE.Mesh(new THREE.PlaneGeometry(20, 20*.75), material);
plane.position.set(0, 10, -60)
scene.add(plane);
What I've tried so far sort of works, but I realise I'm still setting a fixed width/height on the Plane.
I'd like the plane to set the size of the image, then I could scale it down.
var planeGeom = new THREE.PlaneGeometry(20, 20);
var imgSrc = "https://upload.wikimedia.org/wikipedia/commons/5/5f/BBB-Bunny.png"
var mesh;
var tex = new THREE.TextureLoader().load(imgSrc, (tex) => {
tex.needsUpdate = true;
mesh.scale.set(1.0, tex.image.height / tex.image.width, 1.0);
});
var material = new THREE.MeshLambertMaterial({
color: 0xffffff,
map: tex
});
mesh = new THREE.Mesh(planeGeom, material);
scene.add(mesh);
//Working snippet is below...
var renderer = new THREE.WebGLRenderer();
var w = 300;
var h = 200;
renderer.setSize(w, h);
document.body.appendChild(renderer.domElement);
var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera(
45, // Field of view
w / h, // Aspect ratio
0.1, // Near
10000 // Far
);
camera.position.set(15, 10, 15);
camera.lookAt(scene.position);
controls = new THREE.OrbitControls(camera, renderer.domElement);
var light = new THREE.PointLight(0xFFFFFF);
light.position.set(20, 20, 20);
scene.add(light);
var light1 = new THREE.AmbientLight(0x808080);
light1.position.set(20, 20, 20);
scene.add(light1);
var planeGeom = new THREE.PlaneGeometry(20, 20);
var imgSrc = "https://upload.wikimedia.org/wikipedia/commons/5/5f/BBB-Bunny.png"
var mesh;
var tex = new THREE.TextureLoader().load(imgSrc, (tex) => {
tex.needsUpdate = true;
mesh.scale.set(1.0, tex.image.height / tex.image.width, 1.0);
});
var material = new THREE.MeshLambertMaterial({
color: 0xffffff,
map: tex
});
mesh = new THREE.Mesh(planeGeom, material);
scene.add(mesh);
renderer.setClearColor(0xdddddd, 1);
(function animate() {
requestAnimationFrame(animate);
controls.update();
renderer.render(scene, camera);
})();
<script src="https://threejs.org/build/three.min.js"></script>
<script src="https://cdn.rawgit.com/mrdoob/three.js/master/examples/js/controls/OrbitControls.js"></script>
The accepted answer works but has to use the callback to set the width since the loader is asynchronous. Nowadays one can also use the loadAsync method, which IMO makes the code more readable:
const getImageRatioPlane = async () => {
const texture = await new TextureLoader().loadAsync(imgSrc);
const material = new MeshBasicMaterial({ map: texture });
const geometry = new PlaneGeometry(texture.image.width, texture.image.height);
const plane = new Mesh(geometry, material);
}
Is there any way to smooth an .OBJ in three.js ? I already load the model but it looks faceted
I already use the shading: THREE.SmoothShading, in the material but doesn't affect it
var Loader = new THREE.OBJLoader();
Loader.load('models/stockcarchasisc.obj', function(carGeo, materials) {
// var material = new THREE.MeshFaceMaterial(materials);
var map = new THREE.TextureLoader().load( "models/st_tex.jpg" );
map.wrapS = map.wrapT = THREE.RepeatWrapping; // This set/place UV coordinates at 0 !
var material2 = new THREE.MeshStandardMaterial({
color: 0xa65e00,
side: THREE.DoubleSide,
map: map,
});
carGeo.traverse( function(child) {
if (child instanceof THREE.Mesh) {
// apply custom material
child.material = material2;
// enable casting shadows
child.castShadow = true;
child.receiveShadow = true;
}
});
carGeo.position.y = 25;
carGeo.scale.set(25, 25, 25);
var helper = new THREE.VertexNormalsHelper( carGeo, 5, 0x00ff00, 5 );
scene.add(carGeo);
scene.add(helper);
});
// set the scene size
var WIDTH = 1650,
HEIGHT = 700;
// set some camera attributes
var VIEW_ANGLE = 100,
ASPECT = WIDTH / HEIGHT,
NEAR = 0.1,
FAR = 10000;
// get the DOM element to attach to
// - assume we've got jQuery to hand
var $container = $('#container');
// create a WebGL renderer, camera
// and a scene
var renderer = new THREE.WebGLRenderer();
var camera = new THREE.PerspectiveCamera( VIEW_ANGLE,
ASPECT,
NEAR,
FAR );
//camera.lookAt(new THREE.Vector3( 0, 0, 0 ));
var scene = new THREE.Scene();
// the camera starts at 0,0,0 so pull it back
camera.position.x = 200;
camera.position.y = 200;
camera.position.z = 300;
// start the renderer
renderer.setSize(WIDTH, HEIGHT);
// attach the render-supplied DOM element
$container.append(renderer.domElement);
// create the sphere's material
var sphereMaterial = new THREE.MeshLambertMaterial(
{
color: 0xCC0000
});
// set up the sphere vars
var radius = 60, segments = 20, rings = 20;
// create a new mesh with sphere geometry -
// we will cover the sphereMaterial next!
var sphere = new THREE.Mesh(
new THREE.SphereGeometry(radius, segments, rings),
img);
// add the sphere to the scene
scene.add(sphere);
// and the camera
scene.add(camera);
// create a point light
var pointLight = new THREE.PointLight( 0xFFFFFF );
// set its position
pointLight.position.x = 50;
pointLight.position.y = 100;
pointLight.position.z = 180;
// add to the scene
scene.add(pointLight);
// add a base plane
var planeGeo = new THREE.PlaneGeometry(500, 500,8, 8);
var planeMat = new THREE.MeshLambertMaterial({color: 0x666699});
var plane = new THREE.Mesh(planeGeo, planeMat);
plane.position.x = 160;
plane.position.y = 0;
plane.position.z = 20;
//rotate it to correct position
plane.rotation.x = -Math.PI/2;
scene.add(plane);
// add 3D img
var img = new THREE.MeshBasicMaterial({
map:THREE.ImageUtils.loadTexture('cube.png')
});
img.map.needsUpdate = true;
// draw!
renderer.render(scene, camera);
I've put the var img as a material to the sphere but everytime I render it aoutomaticly changes color...
How do I do so it just will have the image as I want... not all the colors?
I whould possibly put the img on a plane.
You need to use the callback of the loadTexture function. If you refer to the source of THREE.ImageUtils you will see that the loadTexture function is defined as
loadTexture: function ( url, mapping, onLoad, onError ) {
var image = new Image();
var texture = new THREE.Texture( image, mapping );
var loader = new THREE.ImageLoader();
loader.addEventListener( 'load', function ( event ) {
texture.image = event.content;
texture.needsUpdate = true;
if ( onLoad ) onLoad( texture );
} );
loader.addEventListener( 'error', function ( event ) {
if ( onError ) onError( event.message );
} );
loader.crossOrigin = this.crossOrigin;
loader.load( url, image );
return texture;
},
Here, only the url parameter is required. The texture mapping can be passed in as null. The last two parameters are the callbacks. You can pass in a function for each one which will be called at the respective load and error events. The problem you are experiencing is most likely caused by the fact that three.js is attempting to apply your material before your texture is properly loaded. In order to remedy this, you should only do this inside a function passed as the onLoad callback (which will only be called after the image has been loaded up). Also, you should always create your material before you apply it to an object.
So you should change your code from:
// set up the sphere vars
var radius = 60, segments = 20, rings = 20;
// create a new mesh with sphere geometry -
// we will cover the sphereMaterial next!
var sphere = new THREE.Mesh(
new THREE.SphereGeometry(radius, segments, rings),
img);
// add the sphere to the scene
scene.add(sphere);
to something like:
var sphereGeo, sphereTex, sphereMat, sphereMesh;
var radius = 60, segments = 20, rings = 20;
sphereGeo = new THREE.SphereGeometry(radius, segments, rings);
sphereTex = THREE.ImageUtils.loadTexture('cube.png', null, function () {
sphereMat = new THREE.MeshBasicMaterial({map: sphereTex});
sphereMesh = new THREE.Mesh(sphereGeo, sphereMat);
scene.add(sphereMesh);
});
I have a cube geometry and a mesh, and i don't know how to change the width (or height... i can change x, y and z though).
Here's a snippet of what i have right now:
geometry = new THREE.CubeGeometry( 200, 200, 200 );
material = new THREE.MeshBasicMaterial( { color: 0xff0000, wireframe: true } );
mesh = new THREE.Mesh( geometry, material );
// WebGL renderer here
function render(){
mesh.rotation.x += 0.01;
mesh.rotation.y += 0.02;
renderer.render( scene, camera );
}
function changeStuff(){
mesh.geometry.width = 500; //Doesn't work.
mesh.width = 500; // Doesn't work.
geometry.width = 500; //Doesn't work.
mesh.position.x = 500// Works!!
render();
}
Thanks!
EDIT
Found a solution:
mesh.scale.x = 500;
Just to complete comment and solution from question (and have an answer present with example code):
// create a cube, 1 unit for width, height, depth
var geometry = new THREE.CubeGeometry(1,1,1);
// each cube side gets another color
var cubeMaterials = [
new THREE.MeshBasicMaterial({color:0x33AA55, transparent:true, opacity:0.8}),
new THREE.MeshBasicMaterial({color:0x55CC00, transparent:true, opacity:0.8}),
new THREE.MeshBasicMaterial({color:0x000000, transparent:true, opacity:0.8}),
new THREE.MeshBasicMaterial({color:0x000000, transparent:true, opacity:0.8}),
new THREE.MeshBasicMaterial({color:0x0000FF, transparent:true, opacity:0.8}),
new THREE.MeshBasicMaterial({color:0x5555AA, transparent:true, opacity:0.8}),
];
// create a MeshFaceMaterial, allows cube to have different materials on each face
var cubeMaterial = new THREE.MeshFaceMaterial(cubeMaterials);
var cube = new THREE.Mesh(geometry, cubeMaterial);
cube.position.set(0,0,0);
scene.add( cube );
cube.scale.x = 2.5; // SCALE
cube.scale.y = 2.5; // SCALE
cube.scale.z = 2.5; // SCALE
A slightly advanced, dynamic example (still the same scaling) implemented here:
You can dispose the geometry of cube and affect the new one like this :
let new_geometry = new THREE.CubeGeometry(500,200,200);
geometry.dispose();
cube.geometry = new_geometry;
Scale properties can be used to for changing width, height and and depth of cube.
//creating a cube
var geometry = new THREE.BoxGeometry(1,1,1);
var material = new THREE.MeshBasicMaterial({color:"white"});
var cube = new THREE.Mesh(geometry, material);
//changing size of cube which is created.
cube.scale.x = 30;
cube.scale.y = 30;
cube.scale.z = 30;