[vtkusers] viewport problems

[Amy Henderson]

Hi Clint,

The reason this happens is that in vtkRenderer::ResetCamera, the camera's 
position is computed using the camera's view angle, which is a vertical 
angle, not a horizontal one. You can try using the 
UseHorizontalViewAngleOn() method in vtkCamera, but then the objects in 
your renderer will be clipped when the window's height becomes too small.

- Amy

At 10:43 AM 4/28/2004, Clinton Stimpson wrote:

>My problem is not the front and back clipping planes.  My sphere isn't being
>cut off from the front or the back.
>vtkRenderer::ResetCamera does the fit to make the model fit in the window.
>
>But my case is where the window has a smaller width than height.  VTK can't
>fit the object in the window.  You can do this in ParaView.  Make a sphere,
>or whatever you want, then resize the window such that it is taller than it
>is wide.  And keep making the width smaller, the object doesn't shrink to
>fit the window.  Hit the "Reset View" button and it doesn't make the sphere
>fit in the window.  If you resize the window so that you make it shorter
>than it is wide, the object will shrink in size to fit the window.
>
>It isn't just my app, it happens in ParaView too.
>
>Clint
>
>Quoting Luke Masters <masters_luke at hotmail.com>:
>
> > Hi Clint,
> >
> > I'm using Java and vtk, but what I would do is on the window resize event
> > I
> > would call the camera reset ( ren.ResetCameraClippingRange(); ). Dont
> > know
> > if it will work for you. I use it when I have big object, and I want it
> > to
> > fit in my window.
> >
> > " void vtkRenderer::ResetCameraClippingRange  (     )
> >    Reset the camera clipping range based on the bounds of the visible
> > actors. This ensures that no props are cut off "
> >
> >
> >
> > Luke Masters :)
> > masters_luke at hotmail.com
> >
> > >Hi,
> > >I have attached 3 small jpeg images of what I'm seeing.  sphere1.jpg is
> >
> > >with a square window and a sphere.  It looks fine.  I make my window
> > >narrower, and part of my sphere is not visible anymore, as you can see
> > in
> > >sphere2.jpg.  I would rather have what I see in sphere3.jpg when I make
> > my
> > >window narrower.
> > >Anyone have any ideas on how to do that? Thanks.
> > >Clint
> > ><< sphere1.jpg >>
> > ><< sphere2.jpg >>
> > ><< sphere3.jpg >>
> >
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