GlobeControls: Controls do not work with a scaled globe

[gkjohnson]

Set tile group scale to 0.001 in ionLunar.html. GlobeControls seem to behave a bit oddly at this scale. Perhaps the scale needs to be applied to the ellipsoid radii when zooming, etc?

[pizza3]

hey @gkjohnson
did some testing with the globecontrols
the issue seems to be that the camera proximity of maxzoom doesnt work when tiles group is scaled
I tried fixing it and got it working to maxzoom for any scale

(left fix, right current master)

Primary changes

1. Added getGroupScale() - extracts the world scale from ellipsoidGroup.matrixWorld to know how much the globe is scaled
2. Scaled distance properties - minDistance and cameraRadius now return value * groupScale so the parent class uses correctly scaled limits
3. Scaled camera clip planes - adjustCamera() now multiplies near/far plane constants by groupScale so geometry isn't clipped at small scales

were there any other behaviors you noticed which needs to be addressed apart from zooming

[gkjohnson]

Thanks - I should have been more clear in the original issue. I think the the zoom in distance should continue to be in world space. When zooming out, however, the behavior becomes a bit uncontrollable and zooms too far from the globe. "GlobeControls" implements custom logic for determining how far to zoom the camera out for orthographic and perspective cameras that doesn't account for any scale applied to the globe. It's possible this is simple as just multiplying the zoom out distances by the frame scale.

[gkjohnson]

Just made a fix in #1482 that scales the zoom out distances by the ellipsoid frame scale to avoid the camera getting too far from the center