Hi,
i have a problem with the streaming of the webcam as texture of a geode.. i
grap frames with opencv and than i create a osg::Image from every frame that
apply as a texture..Now how can i create a imagestream as it is done in the
osgMovie example? if i use the same dynamic_cast obviously it gives me back a
null object...than how can i make the texture update itself?
this is what i actually do (i'm now able to see just the first frame):
osg::Image* image = Convert_OpenCV_TO_OSG_IMAGE(imageCV);
//image->dirty();
osg::ImageStream* imagestream = dynamic_cast<osg::ImageStream*>(image);
if (imagestream)
imagestream->play();
if (image)
{
osg::notify(osg::NOTICE)<<"image->s()"<<image->s()<<"
image-t()="<<image->t()<<std::endl;
geode->addDrawable(myCreateTexturedQuadGeometry(pos,image->s(),image->t(),image,
useTextureRectangle, xyPlane, flip));
bottomright = pos +
osg::Vec3(static_cast<float>(image->s()),static_cast<float>(image->t()),0.0f);
if (xyPlane) pos.y() += image->t()*1.05f;
else pos.z() += image->t()*1.05f;
}
...
for(int i=0; (i<!viewer.done()); i++){
capture = cvCaptureFromCAM( 0 );
if ( !capture )
return -1;
imageCV = cvQueryFrame( capture );
imageCV = cvQueryFrame( capture );
if( !imageCV ) return 1;
image = Convert_OpenCV_TO_OSG_IMAGE(imageCV);
image->dirty();
// viewer.setSceneData(geode);
viewer.setThreadingModel(osgViewer::ViewerBase::SingleThreaded);
viewer.frame();
}
Thank you!
Cheers,
Antonio
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=48782#48782
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