[osg-users] A question about zooming with orthographic projection

[Daniel Moos]

Hi Ke Li

You can implement a zooming functionality with the camera function  
setProjectionMatrixAsOrtho(...)
We also use a orthographic projection in 3d. And we implement our zoom  
with this nice function.

I hope this will help...
Have a nice evening!

Daniel Moos


Am 18.03.2008 um 19:55 schrieb Ke Li:

> Dear all,
>
> In the following post, Robert said that orthographic projection  
> should be avoided.
>
> http://thread.gmane.org/gmane.comp.graphics.openscenegraph.user/7660/focus=7664
>
> But I know that some OpenGL applications do use orthographic  
> projection with zooming functionality. So I'm a little confused.
>
> Can any one give me some enlightenment?
>
> Thanks!
>
> Ke Li
>
> Connect and share in new ways with Windows Live. Get it now!  
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