[osg-users] Node with different projection/view matrix fixed pipeline

Catalin inbox.icf at gmail.com
Thu Jan 16 02:48:20 PST 2020

Hi Robert,

I have an old code, as you know. Some objects are rendered with OpenGL, but 
before that the ViewMatrix is set to identity, as the the objects are 
having their position computed as follow:

ObjectPositionView = ViewMatrix * ObjectPosition + 2D Move Vector(x,y) in 
view space

ObjectPositionView already contains the ViewMatrix, so I am feeding it 
directly to the Open GL.

Those object are some billboards but with the option to be moved in the 
view space, like a 2D move.

If I give directly the ObjectPosition to OSG, it works fine with billboards 
but I don't know how to incorporated the 2D Move Vector, that vector is in 
the view space.

On Thursday, 16 January 2020 10:18:59 UTC+2, Robert Osfield wrote:
> Hi Catalin,
> Could you explain what you are trying to do with the rendering of this 
> node? What you are attempting to do will guide the best way to implement 
> what you need.
> Robert.
> On Thu, 16 Jan 2020 at 07:33, Catalin <inbo... at gmail.com <javascript:>> 
> wrote:
>> Hi,
>> Is there a way to change the view matrix or projection matrix for a just 
>> a specific node in fixed pipeline mode?
>> _______________________________________________
>> osg-users mailing list
>> osg-... at lists.openscenegraph.org <javascript:>
>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org

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