[Mapbender_dev] Re: [Mapbender-dev] Slimming down OpenLayers

Michael Schulz mschulz at webgis.de
Tue May 18 08:55:24 EDT 2010


using OL as the main map component is a good idea. It will provide
Mapbender with a state-of-the-art viewing component. But I think we
can only take advantage of a part of OL functionality, since we are
only dealing with OGC stanardized data formats. Also, tiling is in the
WMS world not too widespread, so single tile mode still yields the
best results for not tile-prepared wms.

I think it makes perfectly sense from a cleaner-code and reuse
existing libs perspective, from a functional perspective I'm not sure
whether we gain a lot. It will take some time to have the full
functionality of the tree, digitizing and map interaction we now have

We may also profite from the broad OL developer community, maybe even
toss some over to mapbender, because we are then providing a db

So, I think it makes sense to take this road.

Cheers, Michael

2010/5/18 Thomas Baschetti <info at thomas-baschetti.de>:
> So what does this mean?
> Do we loose functionality when focusing on openlayers (only)? Shall we do
> this for 3.0 or in a subsequent release? What needs to be done?
> Personally i really like the idea of just taking openlayers as the
> mapcomponent,
> and i don't care about some more k of code which have to be pushed
> through the lines,
> but of course there may be other opinions....
> Thomas
> On 18.05.2010 11:09, Christoph Baudson wrote:
>> Thanks for bringing this us.
>> you can easily load only the components you need. There are tools like
>> http://openlayerer.appspot.com/
>> on the one hand, but Mapbender would do the build itself. You would have
>> an Openlayers core module, and load everything else you need in
>> application elements. It would be like a custom build.
>> I think you can get Openlayers at roughly 100K this way.
>> Christoph
>> Seven (aka Arnulf) wrote:
>> > Folks,
>> > pertinent to the discussion yesterday about where the project is going
>> > Christoph again proposed to go for OpenLayers as the (only) viewing
>> > component to reduce the scope of development. One argument that I always
>> > bring up against this is that OpenLayers is way too fat. It invariably
>> > crams several 100k through the pipe and into the browser while all that
>> > is needed in many cases are just a few 10k. With 2.9 this has not become
>> > any better. Today I found this blog [1] that describes hwo to reduce the
>> > size of OpenLayers from a user perspective. If we go for OpenLayers
>> > could we work backwards by starting with as little OL code as possible
>> > and increasing as we add functionality? Then we could always trade off
>> > functionality for weight and balance both as best required by the
>> > corresponding project.
>> > Best regards,
>> > Arnulf.
>> > [1] http://linfiniti.com/2010/05/slimming-down-openlayers/
> --
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