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Re: [udig-devel] Map Rotation
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I should also note that the geotools community experimented with adding rotation (as an option for geoserver available via open layers app).
So perhaps there some support inside the geotools renderer that could be made use of.
With respect to the bounds; it is a bit of a pickle...
If we allow rotation it becomes better to track the "viewport" by way of:
- center
- scale
- rotation
Rather then a bounding box.
Also note that moovida knows how to add more options to the viewport model (he has added "time" and "elevation" ... so adding a rotation is possible).
Jody
On 08/04/2010, at 3:05 PM, Trupti Pol wrote:
>
> Hi Jesse,
>
> Thanks for the reply.
>
> According to your suggestion i rotated the graphics in renderer
> (BasicFeatureRenderer).
> Also taken care of pixelToWorld() and worldToPixel() methods.
>
> Thus now i am able to rotate the map.
> But the problem is of bounds. I am unable to set the bounds for the
> viewport.
>
> Thus i can see the rotated image on the viewport but as i pan towards the
> edges of the viewport the some part of the map is cutting down. I think this
> is only because of the invalid bounds.
>
> Please give me some idea about how to set the rotated image bounds to
> viewport bounds ?
>
>
>
>
>
> Jesse Eichar-4 wrote:
>>
>> I think it depends on how you want the functionality to work. There are
>> map
>> transformation commands that you can send to the map that can rotate the
>> map. I think that perhaps the transformation is reset after a pan or zoom
>> though, I cannot remember that anymore for certain.
>>
>> The main component for displaying the map is the ViewportPane. But that
>> is
>> only for the main screen not for printing and overviews. You can use draw
>> commands to rotate the viewport pane if you like. But if you want to make
>> the rotation at a deeper level like at the renderer level then it is
>> slightly more difficult. I think each renderer handles translation from
>> world to map coordinates individually. For example WMSRenderer lets the
>> WMS
>> handle it and the BasicFeatureRenderer uses
>> ViewportModel.getAffineTransform.
>>
>> So each of these would probably need to be modified. The good news is
>> that
>> the modification would be minor for each.
>>
>> Each renderer has a render(Graphic2D g) method. You could modify each so
>> set a transform on the graphics 2d.
>>
>> Jesse
>>
>> On Mon, Mar 29, 2010 at 7:38 AM, Trupti Pol <ktrup7@xxxxxxxxx> wrote:
>>
>>>
>>> Hi ,
>>>
>>> We need to rotate map in one of product which uses udig - M7 as the
>>> target
>>> Platform
>>> I have alreay gone thru the previous post dtd somewhere in 2008.
>>> I just wanted to know is there any provision in udig M7 currently to
>>> rotate
>>> the Map.
>>>
>>> What will the amount of efforts required?
>>> Will it be difficult one or not possible at all?
>>>
>>> I would also like to know the areas which will have direct impact of this
>>> functionality.
>>>
>>> Looking for some positive response.
>>> Thanks in advance.
>>>
>>> Trupti Pol.
>>>
>>> -----
>>> Thanks & Regards,
>>> Trupti Pol
>>> --
>>> View this message in context:
>>> http://old.nabble.com/Map-Rotation-tp28064993p28064993.html
>>> Sent from the udig-devel mailing list archive at Nabble.com.
>>>
>>> _______________________________________________
>>> User-friendly Desktop Internet GIS (uDig)
>>> http://udig.refractions.net
>>> http://lists.refractions.net/mailman/listinfo/udig-devel
>>>
>>
>> _______________________________________________
>> User-friendly Desktop Internet GIS (uDig)
>> http://udig.refractions.net
>> http://lists.refractions.net/mailman/listinfo/udig-devel
>>
>>
>
>
> -----
> Thanks & Regards,
> Trupti Pol
> --
> View this message in context: http://old.nabble.com/Map-Rotation-tp28064993p28174161.html
> Sent from the udig-devel mailing list archive at Nabble.com.
>
> _______________________________________________
> User-friendly Desktop Internet GIS (uDig)
> http://udig.refractions.net
> http://lists.refractions.net/mailman/listinfo/udig-devel
