[Mapguide-trac] [mapguide-trac] #2863: White or colored tiles at z=0 when using Default-TileSetDefinition

[MapGuide Open Source]

#2863: White or colored tiles at z=0 when using Default-TileSetDefinition
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 Reporter:  gBecker              |        Owner:  (none)
     Type:  defect               |       Status:  new
 Priority:  high                 |    Milestone:  4.0
Component:  Rendering Service    |      Version:
 Severity:  major                |   Resolution:
 Keywords:  Version 4 Preview 4  |  External ID:
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Comment (by jng):

 I built both 4.0 trunk and 3.1 in debug mode and requested the following
 tile as a baseline comparison:

 `http://localhost:8018/mapguide/mapagent/mapagent.fcgi?mapdefinition=Library%3A%2F%2FFailedTiles%2FTileSets%2FFailedTileSet_Vector.TileSetDefinition&basemaplayergroupname=ALKIS&clientagent=Fusion%20Viewer&operation=GETTILEIMAGE&version=1.2.0&tilecol=1273&tilerow=1096&scaleindex=0&username=Anonymous`

 Thanks to the extra debug chatter when running both debug `mgserver.exe`
 processes interactively, my initial findings are that 3.1 and 4.0 are
 transforming the bounds for the tile coordinate (1273, 1096, 0)
 differently. See attached images for the extra debug chatter from both
 `mgserver.exe` processes.

 I've yet to determine whether XYZ -> `LL84` bounds calculation has changed
 or whether there is a CS-Map regression in the `LL84` -> `ETRS89.UTM-32N`
 transformation.

 Further debugging will find out which one it is.
-- 
Ticket URL: <https://trac.osgeo.org/mapguide/ticket/2863#comment:3>
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