Calling scene.drillPick breaks scene.pickPosition

[hpinkos]

In the picking sandcastle example, replace line 143 (scene.pick(....)) with

var pickedObject = scene.drillPick(movement.endPosition)[0];

The position returned by scene.pickPosition is incorrect. (For this demo, the height is negative).
I'm pretty sure it's picking the ellipsoid instead of the model.

[pjcozzi]

@hpinkos is this holding you up? If so, we can look at it after #2810.

You could also take a quick look at pickPosition and pick; it might not be too hard to figure out.

[hpinkos]

@pjcozzi I skimmed through and I couldn't find anything obvious that drillPick was doing weird. I might look into it further tomorrow.

It's not holding me up, but the functionality of what I'm working on will be better once this is fixed.

[emackey]

I haven't looked deeply yet, but it's possible this is related to #2790.