Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/visualization/OpenGL/src/G4OpenGLImmediateViewer.cc

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  1 //
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 26 //
 27 //
 28 // 
 29 // Andrew Walkden  7th February 1997
 30 // Class G4OpenGLImmediateViewer : Encapsulates the `immediateness' of
 31 //                               an OpenGL view, for inheritance by
 32 //                               derived (X, Xm...) classes.
 33 
 34 #include "G4OpenGLImmediateViewer.hh"
 35 #include "G4OpenGLImmediateSceneHandler.hh"
 36 
 37 G4OpenGLImmediateViewer::G4OpenGLImmediateViewer (G4OpenGLImmediateSceneHandler& scene):
 38 G4VViewer (scene, -1),
 39 G4OpenGLViewer (scene)
 40 {}
 41 
 42 void G4OpenGLImmediateViewer::ProcessView ()
 43 {
 44   const G4Planes& cutaways = fVP.GetCutawayPlanes();
 45   G4bool cutawayUnion = fVP.IsCutaway() &&
 46     fVP.GetCutawayMode() == G4ViewParameters::cutawayUnion;
 47   size_t nPasses = cutawayUnion? cutaways.size(): 1;
 48   for (size_t i = 0; i < nPasses; ++i) {
 49 
 50     if (cutawayUnion) {
 51       double a[4];
 52       a[0] = cutaways[i].a();
 53       a[1] = cutaways[i].b();
 54       a[2] = cutaways[i].c();
 55       a[3] = cutaways[i].d();
 56       glClipPlane (GL_CLIP_PLANE2, a);
 57       glEnable (GL_CLIP_PLANE2);
 58     }
 59 
 60     NeedKernelVisit ();  // Always need to visit G4 kernel.
 61     G4VViewer::ProcessView ();
 62 
 63     if (cutawayUnion) glDisable (GL_CLIP_PLANE2);
 64   }
 65 }
 66