Re: [udig-devel] Map Rotation

[Jesse Eichar <jesse.eichar@xxxxxxxxxxxxxx>]

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.

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Thanks & Regards,
Trupti Pol
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