[Tilecache] tilecache_seed.py not matching up with OpenLayers requests...

[Josh Livni]

1) Can you try svn trunk and see if you get the same behavior?  Note 
tilecache_seed now has different cmd line syntax.

2) Do you get the same offset if you run tilecache_seed and display as a 
Layer.WMS in OpenLayers (eg trying to isolate if it is because of 
tilecache_seed [likely] vs. the off chance it's the OL Tilecache Layer)

  -Josh

John Cole wrote:
> I'm seeding a tilecache for use as a TileCache layer on OpenLayers.
> The problem I'm seeing is that issuing the same BBOX from OpenLayers
> through TileCache (running under mod_python) does not create the same
> tiles as running tilecache_seed.py with the same BBOX (I'm getting the
> bbox from map.getExtent().toBBOX() form the javascript console).
>
> It appears that the tilecache_seed.py is creating tiles offset from the
> BBOX.  Is there something different you need to do when issuing a
> tilecache_seed BBOX over what OL sends?
>
> Let me see if some ascii art helps demonstrate this.
>
> *** requested bbox
>
> ----  returned tiles
>
>
> Openlayers WMS layer through TileCache running through mod_python
>
> ----------------------------------
> |                                |
> |    ***********************     |
> |    *                     *     |
> |    *                     *     |
> |    *                     *     |
> |    *                     *     |
> |    ***********************     |
> |                                |
> ----------------------------------
>
> Using tilecahce_seed.py and displaying as a TileCache layer in
> OpenLayers
>
>
>      ************************
>      *                      *
> -----*----------------------*-
> |    *                      *|
> |    *                      *|
> |    *                      *|
> |    ************************|
> |                            |
> ------------------------------
>
>
> Here is my TileCache config:
>
> [btes_maps4ms2008-1]
> type=WMS
> url=http://gemini.carinatek.com/ms/mapserv.exe?map=/maps/maps4ms_standar
> d_2008-1/map/maps4ms_standard_2008-1_tiger_global_vector.map&
> layers=world_countries_large_scale,world_countries_mid_scale,world_count
> ries_small_scale1,world_countries_small_scale2,built_up_areas,rivers_and
> _streams,canals,regional_borders,international_borders,roads,railroads,s
> ea_labels,ocean_labels,continent_labels_large_scale,country_labels,state
> _province_labels,world_major_cities,world_capitals,island_labels,us_smal
> l_scale_land,us_land,small_scale_urban_areas,us_urban_areas,us_land_use,
> us_small_scale_parks,us_parks,us_water,inland_water_small_scale,inland_w
> ater,inland_water_no_us,us_rivers_streams,us_small_scale_state_borders,u
> s_large_scale_state_borders,us_international_borders,us_county_borders,u
> s_county_labels,us_ramps,us_trails,us_ferries,us_streets,us_railways,us_
> small_scale_secondary_roads,us_secondary_roads,us_small_scale_primary_ro
> ads,us_primary_roads,us_primary_road_shields_small_scale,us_primary_road
> _shields,us_secondary_road_shields_small_scale,us_secondary_road_shields
> ,us_populated_places
> extension=png
> resolutions=0.0012699126752168362,0.0006349563376084181,0.00039684771100
> 52614,0.00023810862660315684,0.0001111173590814732,0.0000555586795407366
> ,0.00003809738025650509,0.000023810862660315683,0.000007936954220105226,
> 0.000003809738025650509,0.0000019048690128252545
> metaTile=true
> metaSize=5,5
>
>
> Here are my Openlayer layers
>
> map_Layer6 = new OpenLayers.Layer.WMS('Maps4MS 2008-1 TC',
> 	
> ['http://msA.carinatek.com/tilecache/tilecache.py?','http://msB.carinate
> k.com/tilecache/tilecache.py?','http://msC.carinatek.com/tilecache/tilec
> ache.py?','http://msD.carinatek.com/tilecache/tilecache.py?'],
> 	{'layers': 'btes_maps4ms2008-1','format': 'image/png'}, {buffer:
> 0,ratio: 1});
> map.addLayer(map_Layer6);
>
> TC_USStreets2008 = new OpenLayers.Layer.TileCache('Maps4MS 2008-1
> (TCD)',
> 	
> ['http://msa.carinatek.com:81/tc/','http://msb.carinatek.com:81/tc/','ht
> tp://msc.carinatek.com:81/tc/','http://msd.carinatek.com:81/tc/'],
> 	'btes_maps4ms2008-1',
> 	{'format': 'image/png',buffer: 0,tileSize: new
> OpenLayers.Size(256,256)});
> map.addLayer(TC_USStreets2008);
>
>
> My tilecahce_seed.py command is:
>
> D:\tilecache-2.04>tilecache_seed.py
> http://gemini.carinatek.com/tilecache/tilecache.py? btes_maps4ms2008-1 0
> 3 -83.439116,35.7898,-81.000884,37.2502
>
> And the extent at max level is:
> map.getExtent().toBBOX()
> "-83.439116,35.7898,-81.000884,37.2502"
>
> Thanks,
>
> John
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