How can I use quaternions?

[cx20]

Below is an example of using quaternion in Three.js.
http://jsdo.it/cx20/qqSi

    // rotate
    mesh1.rotation.x += Math.PI / 180;
    mesh1.rotation.y += Math.PI / 180;
    mesh1.rotation.z += Math.PI / 180;
    
    // quaternion
    var axis = new THREE.Vector3(1,1,1).normalize();
    angle += Math.PI / 180;
    var q = new THREE.Quaternion();
    q.setFromAxisAngle(axis,angle);
    mesh2.quaternion.copy(q);

How do I write the code in CZPG.js to do the same thing as above?

[PrincessGod]

@cx20 Hi.

I am not implement many quaternion functions right now, but you can set quaternion for Model and Node, like

model.quaternion = [0,0,0,1];
sceneNode.quaternion = [0,0,0,1];

So maybe you have to compute target quaternion by yourself right now...

I will mention you after implement quaternion functions :)

[cx20]

@PrincessGod I tried using model.quaternion as a trial. However, it seems to be an infinite loop.
http://jsdo.it/cx20/MZ4J

    model.quaternion = [q.x, q.y, q.z, q.w];

czpg.js:1 
Uncaught RangeError: Maximum call stack size exceeded
    at Model.setQuaternion (VM261 czpg.js:1)
    at Model.setQuaternion (VM261 czpg.js:4416)
    at Model.setQuaternion (VM261 czpg.js:4416)
    at Model.setQuaternion (VM261 czpg.js:4416)
    at Model.setQuaternion (VM261 czpg.js:4416)
    at Model.setQuaternion (VM261 czpg.js:4416)
    at Model.setQuaternion (VM261 czpg.js:4416)
    at Model.setQuaternion (VM261 czpg.js:4416)
    at Model.setQuaternion (VM261 czpg.js:4416)
    at Model.setQuaternion (VM261 czpg.js:4416)

    setQuaternion( ...args ) {

        if ( args[ 0 ] instanceof Transform )
            return this.setQuaternion( ...( args[ 0 ].quaternion.getArray() ) );

        this.setQuaternion( ...args ); // infinite loop?
        return this;

    },

[PrincessGod]

@cx20 ha! Another bug!

fixed 0917462

[cx20]

@PrincessGod Thanks! I confirmed that it will function properly.
http://jsdo.it/cx20/MZ4J

Also, I added the sample of this CZPG.js to the following physical operation sample list.
https://qiita.com/cx20/items/3ebed669fb9c9e797935

I think that I will transplant other samples in the future.