[OpenLayers-Users] Zoomify and fractional zoom

[Andreas Hocevar]

Try Math.floor instead of Math.round - currently the client zoom
implementation only supports oversampling, so you need the next
smallest zoom level.

Andreas.

On Wed, Jun 27, 2012 at 10:51 AM, David Régade <dregade at viewsurf.com> wrote:
> Hi,
>
> It can't be so easy. I fixed line 225 with:
>             var z = Math.round(this.map.getZoom());
>
> And another bug appeared line 201, same fix:
>             var z = Math.round(this.map.getZoom());
>
> However on this example, http://david.regade.free.fr/openlayers/, setting
> zoom to 3.4 doesn't generate javascript errors anymore but the result isn't
> correct. A tile is tried to be drawn and it shouldn't.
>
> I tried to trace where and why this tile is drawn but I'm to new to
> openlayers to find where the problem comes from.
>
> Regards
> David
>
> On 27/06/2012 08:05, Andreas Hocevar wrote:
>>
>> I just see that there is a bug in Zoomify.js, line 225:
>>
>>             var z = this.map.getZoom();
>>
>> We need the integer of getZoom() here instead.
>>
>> Maybe you want to send a pull request with a fix?
>>
>> Andreas.
>>
>> On Tue, Jun 26, 2012 at 11:33 PM, David Régade<dregade at viewsurf.com>
>>  wrote:
>>>
>>> I get the last OpenLayers master and this feature doesn't work with the
>>> following example:
>>>
>>> http://david.regade.free.fr/openlayers/
>>>
>>> Is there something I'm doing wrong ?
>>>
>>> When setting up a fractional zoom (by clicking on the button for example)
>>> Firebug catches an error.
>>> Layer is resized but the tiles are not set correctly.
>>>
>>> David
>>>
>>>
>>> On 26/06/2012 16:32, Andreas Hocevar wrote:
>>>>
>>>>
>>>> This is supported in OpenLayers master and the upcoming 2.12 release.
>>>>
>>>> Andreas.
>>>>
>>>> On Tue, Jun 26, 2012 at 3:12 PM, David Régade<dregade at viewsurf.com>
>>>>  wrote:
>>>>>
>>>>>
>>>>> Hi,
>>>>> We use openlayers to display large panoramas. We use ZoomifyImage to
>>>>> split
>>>>> original image in tiles and Zoomify layer to display these tiles.
>>>>> I would like to use fractionalZoom with Zoomify layer but this layer
>>>>> doesn't
>>>>> support this feature. The main goal is to able to resize displayed
>>>>> tiles
>>>>> for
>>>>> zoom level 3 from 2.5 to 3.4.
>>>>>
>>>>> Does anyone knows how to do that ?
>>>>>
>>>>> Thanks in advance
>>>>> --
>>>>> David REGADE
>>>>> _______________________________________________
>>>>> Users mailing list
>>>>> Users at lists.osgeo.org
>>>>> http://lists.osgeo.org/mailman/listinfo/openlayers-users
>>>>
>>>>
>>>>
>>>>
>>>>
>>> _______________________________________________
>>> 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.