[mapguide-users] Fusion map insists on refreshing map on selection, and clear selection...

[Paul Spencer]

Kenneth is absolutely right, this is important for a couple of reasons  
- when dealing with tiled maps, especially, you want to be able to  
draw an untiled overlay with just the selection.  I'll discuss with  
Mike and see if we have started anything for this.

Cheers

Paul


On 9-Jun-08, at 4:05 PM, Kenneth Skovhede, GEOGRAF A/S wrote:

> Actually, in MapGuide OS 1.2.0 the selection is a part of the image.
> So any selection/de-selection will require the map to be redrawn  
> completely.
> In MGOS 2.0.0 there was an optimization that enables an application  
> to retrieve the selection as a transparent PNG.
> While the transition effects in OL 2.6 will visually minimize the  
> flickering, I would say that supporting the selection as a separate  
> image would be of great use in fusion.
> This is especially true when the underlying layer contains complex  
> rasters.
>
> I have emulated the seperate layer for MGOS 1.2.0 by keeping a dummy  
> copy of the map where I turn on all the layers, select, and turn all  
> layers off.
> The dummy map has transparent background, and thus renders as just  
> the selection.
> Regards, Kenneth Skovhede, GEOGRAF A/S
>
>
> Berdel, Brian skrev:
>>
>> Here is a recent post on this.
>>
>> ------------------------------------------------
>>
>> v1.1 of Fusion will incorporate v2.6 of OpenLayers which should  
>> eliminate this problem and also gives us smooth transition effects  
>> for zoom and panning.  This has already been added to the trunk  
>> version of fusion.
>>
>> Mike
>>
>>
>> -----Original Message-----
>> From: foolfish <xjimmyshcn at sohu.com>
>> Sent: Wednesday, June 4, 2008 11:53pm
>> To: mapguide-users at lists.osgeo.org
>> Subject: [mapguide-users] map flicker when refresh!!!
>>
>>
>> when i use traditional method(not use fusion)，when i show or hide  
>> a layer,it
>> won't flickering。
>>
>> but，in fusion，i use Legend Panel (Layer Manager) to show or hide  
>> a layer，but
>> the map is flickering obviously，it‘s not well～
>>
>> does anybody know how to solve the problem？ wait for your  
>> help，thanks~
>>
>>
>> -- 
>> View this message in context: http://www.nabble.com/map-flicker-when-refresh%21%21%21-tp17661479p17661479.html
>>
>> Brian
>> From: mapguide-users-bounces at lists.osgeo.org [mailto:mapguide-users-bounces at lists.osgeo.org 
>> ] On Behalf Of Andrew DeMerchant
>> Sent: Monday, June 09, 2008 3:29 PM
>> To: MapGuide Users Mail List
>> Subject: [mapguide-users] Fusion map insists on refreshing map on  
>> selection,and clear selection...
>>
>> Just wondering if there's a way to stop fusion maps from redrawing  
>> the map everytime a user selects / deselects something? This  
>> doesn't happen using the AJAX browser...does this happen for anyone  
>> else?
>>
>> Andrew
>>
>> <mime-attachment.gif>
>> Andrew DeMerchant
>> Computer Technologist
>> ph.1-877-2GEMTEC x.163
>> fax 506-453-9470
>> GEMTEC Limited
>> 191 Doak Road
>> Fredericton, NB, Canada
>> E3C 2E6
>>
>>
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