[OpenLayers-Users] very large polygon disappears at very high zoom level

[Michael Ryan]

That was it. Unfortunately, I'm using the graphic fill code to create
polygons filled with external graphics:

http://lists.osgeo.org/pipermail/openlayers-commits/2011-September/001578.html

The polygon appears as it should at the high zoom level, but does not
perform the graphic fill. I believe this is because ossipoff's code
didn't alter Canvas.js. These were the js files modified:

   sandbox/ossipoff/openlayers/lib/OpenLayers/Format/SLD/v1.js
   sandbox/ossipoff/openlayers/lib/OpenLayers/Renderer/SVG.js
   sandbox/ossipoff/openlayers/lib/OpenLayers/Renderer/VML.js.

I'll dig around in there and compare it to Canvas.js to see if I can
figure out how to make canvas also perform the graphic fill.

If anyone wants to throw me a bone here, I'm listening.

-Mike

On Mon, Jun 4, 2012 at 2:01 PM, Andreas Hocevar <ahocevar at opengeo.org> wrote:
> This sounds like a known issue with the SVG renderer. You shouldn't
> see this issue in IE8 or below, and also not if you configure the
> layer with a prioritized Canvas renderer (renderers: ["Canvas", "VML",
> "SVG"]).
>
> Andreas.
>
> On Mon, Jun 4, 2012 at 6:20 PM, Michael Ryan <mr at mry4n.net> wrote:
>> I just wanted to confirm that very large polygons disappear at very
>> high zoom levels (e.g. 17).
>>
>> For example, see the polygon example at
>> http://dev.openlayers.org/releases/OpenLayers-2.11/examples/regular-polygons.html
>>
>> Choose "large" for the size, "circle" for the shape. Draw the polygon,
>> then start zooming in. When you get to around the 2nd to last zoom
>> level, the polygon disappears.
>>
>> For my purposes, I have workarounds, but before I implement them, I
>> just want to make sure this is just a limitation of OL and not
>> something else I'm doing wrong.
>>
>> -Mike
>> _______________________________________________
>> Users mailing list
>> Users at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/openlayers-users
>
>
>
> --
> Andreas Hocevar
> OpenGeo - http://opengeo.org/
> Expert service straight from the developers.