Infinite horizontal scrolling in 2D

[bagnell]

Adds infinite scrolling in 2D.

[pjcozzi]

Merge in master.

[pjcozzi]

The right click zoom out starts to translate strangely at max zoom out. Can we clamp it?

[pjcozzi]

What happens if the viewer sets the camera height above the new max in 2D?

[pjcozzi]

In 2D, use the geocoder to fly to -180, 0. It flies to the wrong location and crashes here and in master.

[pjcozzi]

Do you get this artifact in 2D when zooming in and out in the G&A example? It is not in master.

[pjcozzi]

Testing with the GeoJSON Sandcastle example, the selection indicator turns off early when scrolling to the right:

[pjcozzi]

For #3621 (comment), it might be easier to reproduce it in the GeoJSON Sandcastle example:

[pjcozzi]

For #3621 (comment), check out the Geoeye orbit in the CZML Sandcastle example. The line left of the IDL (or in the left viewport?) jitters.

Also go fullscreen, and you'll see several vertical black line artifacts on the left side.

[bagnell]

For #3621 (comment), it also happens in master after clicking the cardboard button. Its most likely an issue with converting to window coordinates in the shader when there are multiple viewports. I'll open a PR into master when its fixed.

[bagnell]

@pjcozzi This is ready for another review.

[pjcozzi]

Do you get the black flicker on the edge of the viewport when panning in the CZML Sandcastle example:

[pjcozzi]

Only one AGI billboard is highlighted here. Is this just the way it is for now?

[pjcozzi]

What do you suggest for labels (and billboards I imagine) crossing the IDL/viewport? Write up an issue with known 2D issues?

Using the Sandcastle Picking example:

[pjcozzi]

Also if you mouse over above or below in the Picking Sandcastle example, the label moves to the wrong place.

[pjcozzi]

Just those comments.

[bagnell]

Do you get the black flicker on the edge of the viewport when panning in the CZML Sandcastle example?

No, i haven't seen that. The IDL should only visible at most in one location. How did you zoom out that far? Your AGI billboard comment is the same issue.

[bagnell]

What do you suggest for labels (and billboards I imagine) crossing the IDL/viewport? Write up an issue with known 2D issues?

Yes, I'm not sure how to fix that without computing the corner points of the billboard, projecting them to 2D and splitting them across the IDL each frame.

[pjcozzi]

Tested on Mac.

All looks good!