Geant4 User's Guide for Application Developers - Geant4 - CERN

VisualizationOutput can be exported to EPS (both vector and pixel graphics) using vis/ogl/printEPS.More information can be found here : Section 8.4.13If you don't have Motif or Qt, all control is done from Geant4 commands:/vis/open OGLIX/vis/viewer/set/viewpointThetaPhi 70 20/vis/viewer/zoom 2etc.But if you have Motif libraries, you can control Geant4 from Motif widgets:/vis/open OGLIXmIf you have Qt, see the Qt section below.The OpenGL driver added Smooth shading and Transparency since Geant4 release 8.0.Further information (OpenGL and Mesa):• http://www.opengl.org/• http://www.mesa3d.org• http://geant4.slac.stanford.edu/Presentations/vis/G4OpenGLTutorial/G4OpenGLTutorial.html using theOpenGL Graphics System8.3.3. QtThis driver has been developed by Laurent Garnier (IN2P3, LAL Orsay). It is an interface to the powerful applicationframework, Qt, now free on most platforms. This driver also requires the OpenGL library.The Qt driver is well suited for real-time fast visualization and demonstration. Fast visualization is realized withhardware acceleration, reuse of shapes stored in a display list, etc. NURBS visualization is also supported. AllOpenGL features are implemented in the Qt driver, but one also gets mouse control of rotation/translation/zoom,the ability to save your scene in many formats (both vector and pixel graphics) and an easy interface for makingmovies.Two display modes are available: immediate mode and stored mode. The former has no limitation on data size,and the latter is fast for visualizing large data repetitively, and so is suitable for animation.To see the visualization window :or/vis/open OGLSQt (for Stored mode)/vis/open OGLIQt (for Immediate mode)Further information (Qt):• Qt• Geant4 Visualization Tutorial using the Qt Driver8.3.4. OpenInventorThese drivers were developed by Jeff Kallenbach (FNAL) and Guy Barrand (IN2P3) based on the Hepvis classlibrary originated by Joe Boudreau (Pittsburgh University). The OpenInventor drivers and the Hepvis class libraryare based on the well-established OpenInventor technology for scientific visualization. They have high extendibility.They support high interactivity, e.g., attribute e diting of picked objects. Some OpenInventor viewers support"stereoscopic" effects.223