On Mon, 02 Mar 2009 15:50:41 +0100, Ufuk <[email protected]> wrote:
Hi Joakim,
in examples osgcamera, in function:
void multipleWindowMultipleCameras(osgViewer::Viewer& viewer, bool
multipleScreens)
i tried this code sample:
if (i != 2)
viewer.addSlave(camera.get(),
osg::Matrix::scale(aspectRatioScale, 1.0,
1.0)*osg::Matrix::translate(translate_x, 0.0, 0.0), osg::Matrix() );
else
viewer.addSlave(camera.get(), osg::Matrix::scale(-1.0 *
aspectRatioScale, 1.0, 1.0)*osg::Matrix::translate(translate_x, 0.0,
0.0),
osg::Matrix() );
camera which has id 2 become mirrored.
is it something that you want?
Yes, and I have done this in my app as well. But the thing is, cow.osg
uses double sided polygons.
If you edit cow.osg. On line 17:
change GL_CULL_FACE OFF to GL_CULL_FACE ON
Then you will render the front face only.
If you then run your modded version of osgcamera, then you will see that
the mirrored cameras render the backfaced polygons (i.e. the inside of the
cow)
So this is not a general solution.
I will try to add unique groups that contains my shared scene graph for
each camera, and give them different osg::FrontFace attributes. It seems
that the stateset of the cameras are ignored for their underlying
scenegraph. So adding groups for each camera, seems to be the only
solution.
On Mon, Mar 2, 2009 at 4:46 PM, Joakim Simonsson <[email protected]>
wrote:
On Mon, 02 Mar 2009 15:37:07 +0100, Mathias Fröhlich <
[email protected]> wrote:
Hi,
On Monday 02 March 2009 15:24, Joakim Simonsson wrote:
Is it possible to use two cameras, where one is mirrored, that share
the
same scene?
You should be able to have that attached either to the camera itself,
the
mirrored one (is this true, or are the StateSets at the camera
something
special - I dont remember by heart?).
I tried to attach that stateattribute to the mirrored camera only. But
it
does not seem to work.
Or attach a group to the camera that is
not shared , apply that state at this group and attach the shared
graph to
those two groups.
I'll go for the group approach.
Thanks for your help.
--
Joakim
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