[Image Cube app] top plain not lining up to cube, and no-data-regions not transparent

[Andreas Rabe]

1. Top plain not lining up correctly with cube:

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2. No-data-region of top plain should be transparent, so that the datacube below is visible:

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[Andreas Rabe]

Oh, it looks like the top plane is flipped in y direction

Look at the lake here:

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[Andreas Rabe]

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