[osg-users] getProjectionRectangle

Robert Osfield robert.osfield at gmail.com
Fri Sep 14 02:29:50 PDT 2007

Hi CG,

The core OSG uses osg::Viewport rather than ProjectionRectangle,
Viewport is a direct mapping to OpenGL's glViewport.   You can get the
Viewport from the Camera i.e.


The ProjectionRectangle is really just a viewport, but Don decided he
didn't like the use of the word viewport for glViewport and that
ProjectionRectangle was somehow more intuitive.

The core OSG by contrast follows OpenGL naming.


On 9/14/07, #POH CHENG GUAN# <timpcg at pmail.ntu.edu.sg> wrote:
> Hi,
> In version 1.2, I used the Producer's function: getProjectionRectangle to get my projected x, y, width and height for picking purpose. In version 2, how do I get the projected x, y, width and height?
> Regards,
> CG
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> osg-users mailing list
> osg-users at lists.openscenegraph.org
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org

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