I don't really have access to your tool to be able to be direct help; if you 
would like you can add your tool to the community section. Sorry if my earlier 
advice was not helpful; I am not sure exactly what you are up to and did not 
know you were letting the user choose the rotation point. 

Could you perhaps include a BEFORE / AFTER picture? I think I understand what 
you mean by very minute.

The only advice I can offer you is to go very carefully with test cases; 
ensuring the coordinate are what you expect at each stage of the transform.

It sounds like you have a good understanding of the steps involved (dataCRS, 
worldCRS and screen); you just need to check your work; and make sure the 
application is doing what you expect.

-- 
Jody Garnett


On Friday, 30 September 2011 at 10:45 PM, Trupti Pol wrote:

> Dear Jody,
> 
> Thanks for the response, but my problem is not being solved by what u are 
> suggesting.
> 
> I don't have any issue in rotation because my geometry gets rotated 
> correctly, but only thing is it looses its scale, the resultant geometry is 
> very minute and is available at scale 1:0. (i.e i think it is loosing its 
> AffineTransform)
> 
> Another point is i don't want to rotate geometry against its centre, my 
> service is for rotating geometry at any point selected by user.
> 
> please help!!!
> 
> On Fri, Sep 30, 2011 at 8:55 AM, Jody Garnett <[email protected] 
> (mailto:[email protected])> wrote:
> > Someone made a nice tutorial here: 
> > - 
> > http://docs.geotools.org/latest/userguide/tutorial/advanced/affinetransform.html
> > 
> > -- 
> > Jody Garnett
> > 
> > 
> > On Friday, 30 September 2011 at 1:20 PM, Jody Garnett wrote:
> > 
> > > 
> > > The content of the message has not been downloaded yet.
> > > 
> > > 
> > 
> > 
> > 
> > _______________________________________________
> > User-friendly Desktop Internet GIS (uDig)
> > http://udig.refractions.net (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

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