Guide on assigning a material to ColladaLoader or OBJLoader

I've searched extensively through the documentation and numerous examples, but I couldn't find the correct syntax for assigning a material to either a Collada .dae or OBJLoader .obj file.

Json files seem to work well when creating a Mesh, with the loader set as geometry and the material properly assigned.

For example, the following code works:

var loader = new THREE.JSONLoader();
loader.load( "modelPath.js", function(geometry){
  var material = new THREE.MeshLambertMaterial({color: 0x666666});
  mesh = new THREE.Mesh(geometry, material);
  scene.add(mesh);
});

However, the following code does not work:

var loader = new THREE.ColladaLoader();
loader.load( "modelPath.dae", function(geometry){
  var material = new THREE.MeshLambertMaterial({color: 0x666666});
  mesh = new THREE.Mesh(geometry, material);
  scene.add(mesh);
});

Similarly, the code below does not work either:

var loader = new THREE.OBJLoader();
loader.load( "modelPath.obj", function(geometry){
  var material = new THREE.MeshLambertMaterial({color: 0x666666});
  mesh = new THREE.Mesh(geometry, material);
  scene.add(mesh);
});

I have also attempted to set the material within the function(geometry), like

geometry.material = new THREE.MeshLambertMaterial({ color: 0xff0000});
, but without success.

The .Dae format seems to retain the material color directly from 3D programs like Cinema 4D. Is there a proper way to assign a material to these loaders? If so, how can it be done?

Answer №1

To utilize the OBJLoader, make sure to adhere to the following format:

let loader = new THREE.OBJLoader();

loader.load( 'model.obj', function ( object ) {

    let material = new THREE.MeshLambertMaterial( { color: 0x666666 } );

    object.traverse( function ( child ) {

        if ( child instanceof THREE.Mesh ) {

            child.material = material;

        }

    } );

    scene.add( object );

} );

When working with the ColladaLoader, the procedure is quite similar. See below:

let loader = new THREE.ColladaLoader();

loader.load( 'model.dae', function ( collada ) {

    let dae = collada.scene;
    scene.add( dae );

} );

Compatibility with three.js r.62

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