ArcRotateCamera - Change .alpha Rotate Axis

[Nabroski]

@iTekVR do you mind to share a screenshot of the application you are working on? i'm just wondering.

[Visam]

33 minutes ago, Nabroski said:

@iTekVR do you mind to share a screenshot of the application you are working on? i'm just wondering.

@Nabroski I sent you the private message

[Nabroski]

@iTekVR Okay, nice. Its not that hard as it sounds ...

You need this:http://math.hws.edu/graphicsbook/demos/c7/rotators.html

the basics:
http://www.babylonjs.com/cyos/#2FK9TG

Overwrite me:
BABYLON.Camera.prototype.getWorldMatrix = function() {
        if (!this._worldMatrix) {
            this._worldMatrix = BABYLON.Matrix.Identity();
        }
        var viewMatrix = this.getViewMatrix();
        viewMatrix.invertToRef(this._worldMatrix);
        return this._worldMatrix;
    }; etc...
BABYLON.ArcRotateCamera = function(name, alpha, beta, radius, target, scene) {
        BABYLON.Camera.call(this, name, BABYLON.Vector3.Zero(), scene);
        this.alpha = alpha;
        this.beta = beta;
        this.radius = radius;
        this.target = target;
        this._keys = [];
        this.keysUp = [38];
        this.keysDown = [40];
        this.keysLeft = [37];
        this.keysRight = [39];
        this._viewMatrix = new BABYLON.Matrix();
        BABYLON.ArcRotateCamera.prototype._initCache.call(this);
        this.getViewMatrix();
    };

 BABYLON.Vector3.Unproject = function(source, viewportWidth, viewportHeight, world, view, projection) {
        var matrix = world.multiply(view).multiply(projection);
        matrix.invert();
        source.x = source.x / viewportWidth * 2 - 1;
        source.y = -(source.y / viewportHeight * 2 - 1);
        var vector = BABYLON.Vector3.TransformCoordinates(source, matrix);
        var num = source.x * matrix.m[3] + source.y * matrix.m[7] + source.z * matrix.m[11] + matrix.m[15];
        if (BABYLON.Tools.WithinEpsilon(num, 1.0)) {
            vector = vector.scale(1.0 / num);
        }
        return vector;
    };  and so on

 

But i think, someone will write a nice wrapper function for you!  (soon) 


 

 

[Nabroski]

you can also make you own trackball. 

mesh1.target =trackballmesh

 

(this is not a trackball - i just fooling around) http://www.babylonjs-playground.com/#2EE9UD#17

[Visam]

1 hour ago, Nabroski said:

@iTekVR Okay, nice. Its not that hard as it sounds ...

You need this:http://math.hws.edu/graphicsbook/demos/c7/rotators.html

..........................

But i think, someone will write a nice wrapper function for you!  (soon) 


 

 

YES! I need exactly this trackball rotator!

[Nabroski]

If you don't want to mess around with WebGL you can create 2 Meshes and then overload the rotation.

Hope your company  grows quicky and can hire a dev for this

Good Luck, man, report if their is something else. Have a nice day.

[Nabroski]

so im relaxing(from hard work) maybe some1 find it useful i leave it here
http://www.babylonjs-playground.com/#19K1J2#18

[chadautry]

This thread caught my eye. Reminded me of an old problem I had 

Unfortunately I never got around to the further investigations or pull request. For my own work I continued to use ArcRotate camera, but took over the controls all myself. Haven't re-implemented tilt/rotate, but I'll still likely micromanage that myself instead of delegating back to the camera's controls once I do.