From: Andy Spencer <andy753421@gmail.com>
Date: Mon, 19 Apr 2010 06:27:17 +0000 (+0000)
Subject: Add z-index to tiles
X-Git-Tag: v0.4~20
X-Git-Url: http://pileus.org/git/?p=grits;a=commitdiff_plain;h=14c34a746fc94a9e5477d081275f04bd1c8b5d6d;hp=14c34a746fc94a9e5477d081275f04bd1c8b5d6d

Add z-index to tiles

Tiles are still drawn on the ground, Z-indexes are used as polygon
offsets so that you can draw things like composite radar images above
the satellite imagery.
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