Camera orientation widget

Hi,

What's the simplest way to achieve something like Unity's own camera orientation widget, that appears in the Scene tab? I just need to show a particular camera's orientation in another camera's view.

Thanks,
Alex

 

Are you trying to draw the view frustum for the camera? Or just like the x/y/z directional handles?

Either way, check out the Handles class: https://docs.unity3d.com/ScriptReference/Handles.html

If you want to draw a view frustum and it's not built in, you can use https://docs.unity3d.com/ScriptReference/Camera.CalculateFrustumCorners.html twice (once at the near plane distance, once at far plane distance) to get the 8 vertices for the view frustum, then just draw the lines between them with Handles.DrawLine or DrawLines

 

If its just for the editor you can use the Gizmos.DrawFrustum function.
https://docs.unity3d.com/ScriptReference/Gizmos.DrawFrustum.html

 

I just want to draw the X/Y/Z directional handles. What I've done, is create a widget similar to Unity's (X,Y,Z lines), view it with another camera, copy the rotation of the view camera to the widget camera, and set the widget camera's position according to the inverse forward vector of the view camera times some magnitude.

This works, but it feels like using Thor's hammer to hammer a nail.

I want to to this in runtime, outside the editor btw.

 

I think outside of the editor you're pretty much stuck with using your own assets since Handles and Gizmos are, as you know, not available.