Re:

Hi Marco,

On Thu, 2006-09-28 at 09:21 +0200, Marco Di Stefano wrote:
> hello
> I'm Marco,I,m a physic degree student.
> I'm searching to reproduce the image found in the root manual on page 329,
> i.e. a grafical section of Alice detector.
> please can you help me??

Download, build, and install AliROOT (see http://aliceinfo.cern.ch/offline/). Then make the geomtry by running

        Root> gAlice->Init();
        

Alternatively, you can get a ROOT file with the geometry in it from one of your colleagues, and import it into ROOT by doing

        Root> TGeoManager::Import("geomtry.root");

You can then display the geometry in a canvas by doing

        Root> gGeoManager->GetTopVolume()->Draw();

To get a rendered, 3D OpenGL view (making sure your graphics card is accelerated and your graphics driver supports it), do

    Root> gPad->GetViewer3D("ogl");

Note, that you probably want to turn off some volumes so that the rendering won't take forever.

Yours,

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