Hi,
I have a problem to set the origin and the scale of the image. I am using osgVolume to render an image. Here is my code: osg::ref_ptr<osg::Image> osgImage = new osg::Image; osgTile = new osgVolume::VolumeTile; osgTile->setVolumeTechnique(new osgVolume::RayTracedTechnique()); osgLayer= new osgVolume::ImageLayer(osgImage.get()); osgVolume = new osgVolume::Volume; osgVolume->addChild(osgTile.get()); /// the size of the image int nx = 350; int ny = 350; int nz = 60; osg::RefMatrix* matrix = new osg::RefMatrix(nx, 0.0, 0.0, 0.0, 0.0, ny, 0.0, 0.0, 0.0, 0.0, nz, 0.0, 0.0, 0.0, 0.0, 1.0); osgVolume::Locator* locator = new osgVolume::Locator(*matrix); osgLayer->setLocator(locator); osgLayer->offsetAndScaleImage(osg::Vec4(-nx/2, -ny/2, -nz/2, 1.0), osg::Vec4(1.0, 1.0, 1.0, 1.0)); osgTile->setLocator(locator); osgTile->setLayer(osgLayer.get()); When I exxcute the above code, the image is located at somewhere, I need to use the mouse to zoom out until I saw the image. Also the rotation point is at image of bottom left. I would like to set the rotating point at the center of the image and it can show the right scale at startup. Anyone knows how to do it? Many thanks. Regards, Clement _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org