Issue while using dat.GUI in a three.js example

Question

I tried to use dat.GUI in the following three.js example.

I just did the following code changes to add a GUI to adjust mesh opacity.

Answer 1

Move the controls init block after the renderer init block, and change this line:

controls = new THREE.TrackballControls( camera );

to this:

controls = new THREE.TrackballControls( camera, renderer.domElement );