[osg-users] How to Convert Lookat to Projection and View Matrices

[Erik Hensens]

Thank you for the reply Glenn!

You say that the projection matrix doesn't depend on the lookat parameters; what does it depend on?

Thanks in advance!


gwaldron wrote:
> You can make the view matrix:
> 
>   osg::Matrix::lookAt(eye, center, up)
> 
> 
> This has nothing to do with the projection matrix though; that doesn't depend on your look vector.
> 
> Glenn Waldron
> 
> 
> 
> 
> On Tue, Sep 22, 2015 at 9:24 AM, Erik Hensens < ()> wrote:
> 
> > Hi everyone!
> > 
> > How can I compute the view matrix and the projection matrix from a set of lookat parameters (eye, center, and up)?
> > 
> > I'm asking because I need to compute the MVPW for a given lookat before the camera is actually at that lookat.
> > 
> > I'm totally stumped and any help would be greatly appreciated!
> > 
> > Thank you!
> > 
> > Cheers,
> > Erik[/list]
> > 
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> > http://forum.openscenegraph.org/viewtopic.php?p=65173#65173 (http://forum.openscenegraph.org/viewtopic.php?p=65173#65173)
> > 
> > 
> > 
> > 
> > 
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Read this topic online here:
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