Changing opacity with OBJMTLoader

问题

I am currently working on a project with three.js which include the usage of the OBJMTLloader.js, loading the obj and the mtl file

Here is my code:

var loader = new THREE.OBJMTLLoader();
loader.load( './three/obj/Colonne/Vertebres.obj','./three/obj/Colonne/Vertebres.mtl', function ( object ) {
    object.position.y = - 70;
    scene.add( object );
} ); 

I want to know if it is possible to change the opacity of the object/material once it's loaded. Thank you.

回答1:

In your loader callback, you can use a pattern like this one:

object.traverse( function( node ) {
    if( node.material ) {
        node.material.opacity = 0.5;
        node.material.transparent = true;
    }
} );

three.js r.64

来源：https://stackoverflow.com/questions/20825479/changing-opacity-with-objmtloader