HI Antonio, All you need to do is call image->dirty(); and then the texture will know that it'll need to update the texture object then next time the texture is used in the draw traversal.
Robert. On 10 July 2012 09:25, Antonio De Giorgio <[email protected]> wrote: > 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 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
