Attempting to modify the side attribute of a material in A-Frame using three.js leads to unexpected visual results

In an attempt to find a solution, I've shared details about this issue on my personal blog since I can only include limited links in this post as a newbie on Stack Overflow.

Since my initial inquiry, I have provided updates to showcase the progress made so far.

You can witness my code in action through this link, along with the crucial segments below:

var side = this.data.side; // The default value should be 2, and all I want to do is alter material.side to side;
var object3D = this.el.object3D;

console.log("Commencing traversal of object3D");
object3D.traverse( function( child ){
    console.log("Traversing...")
    console.log("Current child object: ", child);
    console.log("Child type", typeof child);
    if ( child instanceof THREE.Group ) {
      console.log("THREE.Group found!")
      child.traverse(function(childOfChild) {
        console.log("Further traversing...")
        console.log("Current child of child object: ", childOfChild);
        console.log("Child type", typeof childOfChild); 
        if ( childOfChild instanceof THREE.Mesh ) {
          console.log("THREE.Mesh found!")
        }
      }
      );
    }
  }
);
console.log("Traversal of object3D complete");

My main goal is simple:

To change theMaterialOfTheObject3D.side to 2 also known as THREE.DoubleSide

But the real challenge lies in accessing the material within Three.js. Traversal seems impossible as per @mrdoob’s statement:

Geometries and Materials are not children.

Answer №1

I suggest incorporating code into components to eliminate concerns about timing issues. Explore more here

AFRAME.registerComponent('material-side-modifier', {
  dependencies: ['yourlandscapecomponent'],  // Alternatively, you can wait for an event.

  init: function () {
    // Modify material side in this section.
  }
}); 

<a-entity yourlandscapecomponent material-side-modifier>

If you structure the components as shown in HTML, specifying dependencies may not even be necessary.

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