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Re: [udig-devel] Re: tiled rendering and labels
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On Wed, Apr 8, 2009 at 9:45 AM, Emily Gouge <egouge@xxxxxxxxxxxxxxx> wrote:
> The attached image shows another issue with tiled rendering that I currently
> know about. In this image the blue line is the tile boundary.
>
> The problem occurs when you have a geometry whose actual position is on one
> tile but whose style says it should be on a neighboring tile as well. Other
> than rendering some sort of buffer around the tiles I'm not sure how to fix
> this issue either.
Buffered tiles (well, metatiles) is exactly how most tiling backends
deal with this problem. End-caps on wide lines can have similar
issues.
P
>
> Emily
>
> Emily Gouge wrote:
>>
>> Yes Jody, you are correct. Labels and tiled rendering do not work well
>> together. I looked into this briefly at one point but I didn't find a
>> decent solution. I believe what we are going to need is one label renderer
>> for each tile rather than just a single label renderer.
>>
>> I may have some time over the next few weeks to look at this further. Not
>> sure at the moment.
>>
>> Emily
>>
>>
>>
>> Jody Garnett wrote:
>>>
>>> Hi Emily: This may be another corner case; I was testing out tiled
>>> renderer with the "climate change intergration showcase" dataset for
>>> foss4g this year. And labels went absolulty bonkers... this test is
>>> with the last udig 1.2-M3 release and does not reflect any recent work
>>> you have done.
>>>
>>> Near as I can tell the label cache implementation is not being reset
>>> on a tile by tile basis; you may even wish to store a tilecache in the
>>> render context you create for each tile? I am not sure how it should
>>> be done ...
>>>
>>> Jody
>>>
>>>
>>> ------------------------------------------------------------------------
>>>
>> _______________________________________________
>> User-friendly Desktop Internet GIS (uDig)
>> http://udig.refractions.net
>> http://lists.refractions.net/mailman/listinfo/udig-devel
>
> _______________________________________________
> User-friendly Desktop Internet GIS (uDig)
> http://udig.refractions.net
> http://lists.refractions.net/mailman/listinfo/udig-devel
>
>
