[OpenLayers-Dev] SVG viewbox problem with minScale

[Alexandre Dube]

Thanks Eric,

  I'll test your patch as soon as it's ready.

Alexandre

Eric Lemoine wrote:
> I have a patch that i'd like you to test. I cant post it right now but
> will do as soon as i can. Cheers. Eric
>
> 2008/7/29, Eric Lemoine <eric.c2c at gmail.com>:
>   
>> Just checked: zoomChanged is set to true in moveTo when coming from
>> setVisibility(true), so the fix describes in my previous email might
>> just work. Eric
>>
>> 2008/7/29, Eric Lemoine <eric.c2c at gmail.com>:
>>     
>>> Hi. Still i'm not convinced the problem is related to the pixel limit.
>>> When the layer is back to in range i tend to think that this.left and
>>> this.top should be reset to zero, which isn't the case today because
>>> from the renderer perspective it's like resolution has never changed.
>>> One way to solve this would be to have the layer pass the renderer the
>>> zoomChanged boolean value when calling setExtent, and have the
>>> renderer rely on that value to know whether resolution's changed.
>>> Although this will probably work in the "going back in range"
>>> situation, i'm not sure it'll work in the "going back to visible"
>>> situation, which must also be dealt with. Unless setVisibility(true)
>>> does pass zoomChanged=true to the layer moveTo call. This to be check,
>>> which i cant do at the moment. Regards. Eric
>>>
>>> 2008/7/28, Alexandre Dube <adube at mapgears.com>:
>>>       
>>>> Hi Eric,
>>>>
>>>>   The location is correct.  It is ok to have a 15000px limit and that
>>>> works perfectly.
>>>>
>>>>   To fix the bug, I think when the code checks the resolution, if it's
>>>> the same than before, it should also check the location of one of our
>>>> feature position...  If it's near our 15000px limit ( let's say more
>>>> than 14000px for example ) it should change the left-top value of the
>>>> renderer.
>>>>
>>>>   That way, even if we zoom out or pan, if we get out of our 15000px
>>>> limit, features will continue to be displayed.
>>>>
>>>>   What do you think ?
>>>>
>>>> Alexandre
>>>>
>>>> Eric Lemoine wrote:
>>>>         
>>>>> On Mon, Jul 28, 2008 at 3:35 PM, Alexandre Dube <adube at mapgears.com>
>>>>> wrote:
>>>>>
>>>>>
>>>>> So it seems to me that the problem doesn't really related to the 15000
>>>>> px limit. In this scenario:
>>>>>
>>>>> - go out of range
>>>>> - pan and zoom without going beyond the 15000 px limit
>>>>> - go in range (the features should be visible as the limit was crossed)
>>>>>
>>>>> is the location of features correct?
>>>>>
>>>>> --
>>>>> Eric
>>>>>
>>>>>           
>>>> --
>>>> Alexandre Dubé
>>>> Mapgears
>>>> www.mapgears.com
>>>>
>>>>
>>>>         


-- 
Alexandre Dubé
Mapgears
www.mapgears.com