I need to display collada file (.dae) using three.js , i can load model but it display without textures , using this code
var loader = new THREE.ColladaLoader( loadingManager );
loader.options.convertUpAxis = true;
loader.load( './car.dae', function ( collada ) {
car = collada.scene;
car.material =
THREE.TextureLoader("../model/car_white.jpg");
i tried other codes ,only this code worked for model but without texture
need your support to add my texture.
Generally speaking, you can add textures to a model like this:
var textureLoader = new THREE.TextureLoader();
var texture = textureLoader.load('../model/car_white.jpg');
loader.load( './car.dae', function ( collada ) {
collada.scene.traverse(function (node) {
if (node.isMesh) {
node.material.map = texture;
}
});
});
Refer to the documentation for THREE.Material and THREE.TextureLoader for more information.
NOTE: As #gaitat mentioned in a comment, your texture may not be wrapped correctly on the model if they weren't designed for one another, and if the model isn't very simple. If that's the case, you probably need to add the texture in Blender (or other software) instead, where you can create UVs, and export the result.
Related
No matter what I do, I cannot get a texture to update after importing a GLTF model using react-three fiber.
const { nodes, materials } = useGLTF("/glb4.glb");
const newtexture = useLoader(TextureLoader, "texture1.jpg");
newtexture.flipY = false;
Now I can do
let newmaterial = new THREE.MeshPhysicalMaterial({ map: newtexture});
to import it into the scene with
<mesh
geometry={nodes.Body_Front_Node.geometry}
material={newmaterial}
/>
However it results in a grey material without the texture. Even modifying the original gltf material with the new texture gives the same result.
Is there a way to update the texture of a gltf mode dynamically? Here is the full codesandbox: https://codesandbox.io/p/github/Mazzz-zzz/fabrigen/main?file=%2Fsrc%2FApp.js
Suppose i have one gltf model like given here: https://sketchfab.com/3d-models/box-d919737a5a5b464f809d12f7e1fad78f. and cover image like given below:
I have to cover this image on full box not each layer separately.
Below is my code to apply texture on object.
var loader = new GLTFLoader().setPath( 'models/gltf/box/' );
loader.load( 'scene.gltf', function ( gltf ) {
var model = gltf.scene;
model.traverse ( ( o ) => {
if ( o.isMesh ) {
o.material.map = texture;
}
} );
scene.add( model );
render();
} );
Results of code is like given in below image but i have to wrap single image in continues manner to all side.
Thanks in advance for any kind of help.
That's the default texture-mapping behavior of a standard Three.js cube. If you need to modify the way the texture is mapped, then you'll have to perform your own UV Mapping and import the geometry into Three.js so they follow the pattern that you desire. For example, if you want to create a 6-sided die, you'll have to edit your UVs so they follow this pattern:
I recommend you use Blender to do this because it's free, easy, and it has a built-in GLTF exporter that you can use with Three.js.
Goal
I'm stuck since yesterday with an issue on modifying a JeelizFilterFace example. My goal is to create my own filters, so I started the the luffy's hat tutorial, which explains that : https://jeeliz.com/blog/creating-a-snapchat-like-filter-with-jeelizs-facefilter-api-part-1-creating-your-first-filter/
Quick description of the problem
My problem is simple : I can't have the glTF example working with glTF models. It always show me a black shape, without the texture.
Details of the problem
The tutorial explains that the model have to be generated with a Blender exporter addons, in order to create the json file which is the model. But the Blender exporter is not supported anymore.
This is why I try to use ThreeJS with the GLTF loader (which is the best solution according to all the tutorials).
My problem is that I can't see any texture on any of my models, when I load it with JeelizFaceFilter/Threejs. I only have the black shape.
Here is what I did :
First, I did all the tutorial to be sure I can run the FilterFace tool, except for the exporting model from Blender part. So, I just copied the exported resources from the Jeeliz repo. The FilterFace works well : the hat is visible, with the texture and I can play with the THREEJS params.
Because I couldn't export the JSON from blender, i wanted to try to use the GLTF 2.0 model, I tried this model, which is working in the gltf-viewer tool (see picture below) : https://s3.eu-west-3.amazonaws.com/com.julianlecalvez/LuffysHat.zip
So far everything seems ok, but when I try to use this glTF loader example in the glTF demos (https://github.com/jeeliz/jeelizFaceFilter/tree/master/demos/threejs/gltf_fullScreen), it displays my hat in black. I have the good shape, but no texture (or no light?). I just replaced the model URL in this file. And I'm not even sure that the default model (the helmet) is displaying any texture.
I tried with a model from SketchFab, and I have the same : Black shape, no texture.
I put here the code to init the view, when I was trying to redo it outside of the demo file :
let init_view = function(spec) {
const threeStuffs = THREE.JeelizHelper.init(spec, null);
const SETTINGS = {
gltfModelURL: 'objects/luffys_hat_gltf/luffys_hat.gltf',
offsetYZ: [1,0],
scale: 2.2
};
// const loader = new THREE.GLTFLoader();
const gltfLoader = new THREE.GLTFLoader();
gltfLoader.load( SETTINGS.gltfModelURL, function ( gltf ) {
gltf.scene.frustumCulled = false;
// center and scale the object:
const bbox = new THREE.Box3().expandByObject(gltf.scene);
// center the model:
const centerBBox = bbox.getCenter(new THREE.Vector3());
gltf.scene.position.add(centerBBox.multiplyScalar(-1));
gltf.scene.position.add(new THREE.Vector3(0,SETTINGS.offsetYZ[0], SETTINGS.offsetYZ[1]));
// scale the model according to its width:
const sizeX = bbox.getSize(new THREE.Vector3()).x;
gltf.scene.scale.multiplyScalar(SETTINGS.scale / sizeX);
// dispatch the model:
threeStuffs.faceObject.add(gltf.scene);
});
// CREATE THE CAMERA
THREECAMERA = THREE.JeelizHelper.create_camera();
}
I'm trying to load a pretty simple model with two materials (applied per-face) in Three.js exported from Blender. The issue I'm running into is that with multiple materials applied via the code below the mesh disappears entirely, but I can easily use materials[0] or materials[1] in place of materials and see a solid object. My export settings from blender along with what it should look like are below and the json of the model is visible online here.
I tried your JSON file and it displayed just like your image. Here's the code I used (three.js r83):
var mesh = new THREE.Object3D();
var jsonLoader = new THREE.JSONLoader();
jsonLoader.load('/js/models/cube.json',
function (geometry, materials) {
mesh = new THREE.Mesh(geometry,
new THREE.MultiMaterial(materials));
scene.add(mesh);
}
);
http://www.threejsworld.com/tutorials/working-with-materials-in-threejs
I have a quite complex shape (dressed girl) that in Blender is broken down into different objects and it's loaded into Three.js with the JSON loader (with a little hack I made, that uses zipped files instead of just JSON files, as there are a lot of vertices).
As I want to change dynamically the style of the dress from a Web page, I was wondering how I can show/hide different pieces (e.g. sleeves) in the scene.
I tried traversing the THREE.Mesh, but there are no children.
When I export from Blender with the JSON exporter, I don't see anything referring to the names of the objects in the JSON. Is the structure lost?
If you are using meshes containing lots of vertices, I would advise you to use the openCTM webGL loader instead of zip hacking. Here is a link to the loader : http://threejs.org/examples/webgl_loader_ctm.html
This mesh compression tool uses LZMA compression method and can reduce the size of your files by 93%...
Concerning the JSONLoader, using an array might help:
var meshes = [];
...
var loader = new THREE.JSONLoader();
var onGeometry = function(geom)
{
var mesh = new THREE.SceneUtils.createMultiMaterialObject(geom, [material]);
meshes.push( mesh );
...
scene.add(mesh);
};
loader.load("yourfile.js", onGeometry);
Hope this helps
It is possible to load an entire scene with several meshes from a json file exported from Blender and handle them separately!
You can follow the complete process of exporting a entire scene from Blender and the right way of handling the exported meshes on my answer of this post.
So, you can get the different meshes and manipulate them separately using the getObjectByName method. But it is important to know that the loaded object isn't a Geometry anymore. It is labeled with the Scene type by now and it must be handled in a different way.
The loading code must look like this one:
loader = new THREE.JSONLoader();
loader.load( "obj/Books.json", function ( loadedObj ) {
var surface = loadedObj.getObjectByName("Surface");
var outline = loadedObj.getObjectByName("Outline");
var mask = loadedObj.getObjectByName("Mask");
scene.add(surface);
scene.add(outline);
scene.add(mask);
} );
Besides, you can handle the multiple materials of single mesh using THREE.MeshFaceMaterial like in the following code:
var mat1 = new THREE.MeshLambertMaterial( { map: texture1 } );
var mat2 = new THREE.MeshLambertMaterial( { map: texture2 } );
var materials = [mat1, mat2];
var faceMat = new THREE.MeshFaceMaterial(materials);
mesh = new THREE.Mesh( geometry, faceMat );
scene.add( mesh );
Hope this helps :)