[vtkusers] Default coordinate system for vtkPolyData !

[Amy Squillacote]

Hi Salman,

vtkPolyData does not have a notion of what coordinate system it's in. I 
don't think there's a way to get this information from a .vtp file. The 
vtkActor is coordinate-system aware. Typically you use the world 
coordinate system when you're setting up the points for a vtkPolyData, 
but this does not have to be the case.

- Amy

M.Salman at surrey.ac.uk wrote:
>
>
> Thanks for your reply Amy.Supppose I have a vtp model,how do I find 
> out which coordinate system is it using?
>
> I really appreciate your help,
>
> Thanks
>
> Salman
>
>
> -----Original Message-----
> From: Amy Squillacote [mailto:ahs at cfdrc.com]
> Sent: Tue 15/01/2008 2:06 PM
> To: Salman M Mr (PG/R - Electronic Eng)
> Cc: vtkusers at vtk.org
> Subject: Re: [vtkusers] Default coordinate system for vtkPolyData !
>
> Hi Salman,
>
> When saving out a .vtp file, VTK uses whatever point coordinates
> (vtkPoints) are defined in the vtkPolyData being written out.
>
> - Amy
>
> M.Salman at surrey.ac.uk wrote:
> >
> >
> > Hi All,
> >
> >
> >
> > I want to know which default coordinate system from the following does
> > VTK use while saveing a model in vtp format.
> >
> > DISPLAY -             x-y pixel values in window
> >   NORMALIZED DISPLAY -  x-y (0,1) normalized values
> >   VIEWPORT -            x-y pixel values in viewport
> >   NORMALIZED VIEWPORT - x-y (0,1) normalized value in viewport
> >   VIEW -                x-y-z (-1,1) values in camera coordinates. (z
> > is depth)
> >   WORLD -               x-y-z global coordinate values
> >   USERDEFINED -         x-y-z in User defined space
> >
> >
> > this is really important for me .
> >
> > Best Regards,
> >
> > Salman
> >
> >
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>