Hi,
I adjust the back clip distance and make the front clip distance a ratio of the
back clip distance:
view.setBackClipDistance(radius*2.0f);
view.setFrontClipDistance(radius*2.0f/5000.0f);
radius is the distance from the camera position to the focal point (the point
the camera is looking at).
--Renoir
John Wright wrote:
> Alvaro,
>
> None of us have "solved" the z-buffer problems. The best we can do is
> make intelligent choices for front and back clipping distances to best
> fit our scene. Dynamically adjusting the front and back clipping values
> is an intriguing idea, but it would be pointless to adjust just one of
> them.
>
> - John Wright
> Starfire Research
>
> alvaro zabala wrote:
> >
> > Hi all!,
> > I have a question about changing clipping planes dinamically for solve the
> > z-buffer tearing problem.
> >
> > Desiree and Chris suggest me to changing front clip distance, but I don't
> > understand very well.
> >
> > Don't I may change the back clipping plane instead?
> >
> > My idea is to calculate the distance from the Viewing Platform to the
> > furtest object , and change the back clipping plane to that distance.
> >
> > May I have in a blunder??
> >
> > Please, see the atachment with the z-Buffer problem.
> >
> > (People who has solved it, like David Yazel would be appreciated)
> >
> > -----Mensaje original-----
> > De: ChrisThorne <[EMAIL PROTECTED]>
> > Para: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
> > Fecha: mi�rcoles 23 de mayo de 2001 1:18
> > Asunto: Re: [JAVA3D] Test program (fwd) for Grafic card question
> >
> > >
> > >
> > >Desiree Hilbring wrote:
> > >
> > >> > Sounds like you need to set the back clipping distance further.
> > >>
> > >> I detected that dist sometimes calculates a negative distance, setting
> > the
> > >> front clipping plane at a minimum of 1 solves the clipping problem, but
> > >> the original zbuffer issues still exists.
> > >
> > >Ok, there was a mistake - I should have used absolute values. You could
> > using the sqrt distance
> > >formula - as in the attached version of your test program.
> > >
> > >It works on my tests using your test program and dist will always be +ve.
> > >
> > >If that doesn't work in your main application then we can try keeping the
> > forward/back clip ratio
> > >to a constant. I see from your later mail you have used this solution.
> > Are you keeping the
> > >ratio to 3000 or a smaller number?
> > >
> > >cheers,
> > >
> > >Chris
> > >
> > >
> > >--
> > > ,--_|\
> > > / Oz \
> > >Chris Thorne :)_.--._/
> > >[EMAIL PROTECTED] v
> > >
> > >
> >
> > ------------------------------------------------------------------------
> > Name: Prueba1.gif
> > Prueba1.gif Type: GIF Image (image/gif)
> > Encoding: base64
>
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--
Renoir Sewjee
Software Engineer
ISS International (Welkom)
Tel: +27 (0)57 912 2702
Fax: +27 (0)57 912 2652
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