[OpenLayers-Users] Flicker while dragging map with vector in FF

[louvy.joseph at gmail.com]

The google drag flicker is captured in 
http://trac.openlayers.org/ticket/816 as far as I understand. I can't 
understand how this bug is left around for so long. It is pretty serious 
in the sense of AJAX experience. The same thing does happen in my trials 
with Yahoo layer too but the flicker is not so bad.

-- Narayana

Glen Stampoultzis wrote:
>
> On 06/07/07, *bradleyspencer* <brad at cubewerx.com.au 
> <mailto:brad at cubewerx.com.au>> wrote:
>
>     Louvy,
>
>     I have the same problem I think. But this has a 'flickr' in both
>     IE and FF.
>
>     http://www.ozdemo.org/
>
>     Just change base map to Google Maps (or Hybrid) and drag away. The
>     TerraPages is what I use as default and is a separate TileCached
>     environment
>     and no flickr.
>
>     Cheers,
>
>     Brad Spencer
>     mailto:brad at cubewerx.com.au <mailto:brad at cubewerx.com.au>
>     http://www.cubewerx.com.au
>
>
>
> Hi Brad,
>
> Hi.  Sorry for the lateness of my reply.  I only just noticed your 
> message.
>
> The issue was being caused for me because I was was erasing and 
> redrawing a vector
> when any pan occurred.  This would cause black triangles to appear for 
> me when it was erased.  This was fixed in FF by moving the erase into 
> the same event as the draw.  Previously I was erasing the vector 
> making an ajax request then drawing a new vector.  Unfortunately this 
> causes a weird ghost line in Internet Explorer for a split second so I 
> had to keep the erase before the ajax request in Internet Explorer.  
> this means the line disappears until the ajax request comes back which 
> is unfortunate.
>
> The flicker I was experiencing doesn't seem to be the same thing that 
> I'm seeing on your site.
>
>
>
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