[fusion-users] MapGuide HTTP tiles with Fusion?

[Mike Adair]

Once the OpenLayers MapGuide layer includes the patches for #1622 and 
#1756, then yes in theory using tiled base layers would be possible.  I 
will update Fusion trunk with that patch included eventually.  I did 
some quick tests to see what would be involved.

I tried setting a regular MG tiled layer as the base layer with a MG 
overlay placed on top of that and it works in theory (I ran into some 
visibility issues that I will look into) but it is definitely possible 
to do.

Setting an http cache as the base layer (alone or combined with others) 
isn't currently supported but worth doing in my opinion.  However there 
are a few issues to be decided:

- Fusion will still require a LoadMap call to get the parameters for the 
map (extent, scales, layers, etc.).  This can either use the existing 
LoadMap call using the tiled MapDefinition resource, but this still 
requires an instance of MapGuide to be available.  There are other 
server calls that would require a MapGuide instance (e.g. selection, 
maptips) so this may not be a big issue.  The alternative is to have a 
static json file which is similar to the LoadMap response that can be 
used to describe the map.

- the tile cache root URL needs to be specified somewhere, I'm thinking 
that config.json is probably the best place for that.

Comments?

Mike

Zac Spitzer wrote:
> fusion 2 is going to support arbitrary openlayers layers i believe :)
>
> the pain is still the manual configuration required to set things up
>
> z
>
> On Mon, Mar 2, 2009 at 7:09 PM, Jason Birch <Jason.Birch at nanaimo.ca> wrote:
>   
>> Hi all,
>>
>> Zac's done some work getting MapGuide tiles to serve up as straight HTTP requests.  This technique, combined with multiple hosts (maptiles1.nanaimo.ca, maptiles2.nanaimo.ca, etc) would really make MapGuide tile serving smoke.
>>
>> http://trac.openlayers.org/ticket/1622
>>
>> Does anyone know if this method could be:
>>
>>  - supported as a layer type under Fusion 2
>>  - added to a Fusion map as a "base layer" at the bottom of a dynamic MapGuide layer?
>>
>> And, failing this, can a standard MapGuide tiled map be used as a base layer at the bottom of a dynamic MapGuide layer in a single Fusion map?
>>
>> This would be a "killer feature" for me.  If it can't currently be done, what kind of effort would be involved in supporting this?
>>
>> Thanks,
>> Jason
>>
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>>
>>     
>
>
>
>   

-- 
   Michael Adair
   Senior Software Architect
   DM Solutions Group Inc.

   Office: (613) 565-5056 x26
   madair at dmsolutions.ca
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