Hi,
create the image once and update it's data every frame and call dirty on
the image. It looks ike Convert_OpenCV_TO_OSG_IMAGE returns a newly
created image everytime it gets called.
cheers,
Stephan
Am 10.07.12 10:25, schrieb Antonio De Giorgio:
> 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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