Error plotting across boundaries.

[max-anu]

Plotting a region which goes across the -180/+180 longitude causes problems.

Here's an example that fails:

min_lat, max_lat, min_lon, max_lon = (-52.20000076293945, 10.257999420166016, 89.24864196777344, 206.01136779785156)

vertical_exaggeration=20
cropbox=((min_lat, min_lon), (max_lat, max_lon))
lv = accessvis.plot_region(cropbox=cropbox, vertical_exaggeration=vertical_exaggeration)
lv.set_properties(diffuse=0.6, ambient=0.85, specular=0.25, shininess=0.03, light=[1,1,0.98,1], lightpos=[0,0,10000,1])
lv.display((640,480))

You can see strange ghosting occurring here:

from owen: There's issues with wrapping the textures and topo. We need to support regions that cross data boundaries.