Rotating a mesh in 3d space

[0xjmux]

Hi,
It's my first time working with rendering, and I'm trying to rotate an object based on pitch and roll euler angles. However, I've been having more trouble than expected, and the usual suspects (the examples, the docs, asking an LLM) haven't been able to help me solve it myself.

I've slimmed my code down to a runnable demo app, which you can find here

Here's a screenshot:

It's a combination of the point_cloud and screen examples. Changing the pitch and roll sliders should rotate the Axes object (in the screenshot, the one on the right) without changing the view of the global coordinate system (the axes on the left). However, changing pitch doesn't seem to do anything until you change roll, and they don't work correctly. I expect the axes object we're rotating to rotate around its origin with the arrows remaining orthogonal, but somehow the arrows stop being orthogonal with each other when the transformation is applied

This is how I'm doing the rotation:

        let rotation = Euler {
            x: Deg(app.pitch_deg),
            y: Deg::zero(),
            z: Deg(app.roll_deg),
        };

        let combined_rotation = Quaternion::from(rotation);

        axes_mesh.set_transformation(combined_rotation.into());

I'm really not sure why I can't get a simple rotation to work, if someone would be able to point me in the right direction I'd greatly appreciate it.

Thanks!

[0xjmux]

After some more debugging and research, this seems like a resurgence of #543 - it seems like rotating primitives is bugged in the current version.

[asny]

Sounds reasonable that that's the problem and yes, the fix is not released yet. However, the only primitive that has this problem is the Axes object, so just use any other object, a cube for example.