G4BoundingExtentScene.cc

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// John Allison  15th February 2019
// An artificial scene to reuse G4VScene code to calculate a bounding extent.
 
#include "G4BoundingExtentScene.hh"
 
#include "G4VSolid.hh"
#include "G4PhysicalVolumeModel.hh"
 
G4BoundingExtentScene::G4BoundingExtentScene (G4VModel* pModel)
:fpModel(pModel)
{}
 
G4BoundingExtentScene::~G4BoundingExtentScene () {}
 
 
void G4BoundingExtentScene::ProcessVolume(const G4VSolid& solid)
{
  G4VisExtent newExtent = solid.GetExtent ();
  if (fpCurrentObjectTransformation) {
    newExtent.Transform (*fpCurrentObjectTransformation);
  }
  AccrueBoundingExtent (newExtent);
 
  // Curtail descent - can assume daughters are contained within mother...
  G4PhysicalVolumeModel* pPVM = dynamic_cast<G4PhysicalVolumeModel*>(fpModel);
  if (pPVM) pPVM->CurtailDescent();
}
 
void G4BoundingExtentScene::ResetBoundingExtent ()
{
  fExtent = G4VisExtent::GetNullExtent();
  fpCurrentObjectTransformation = 0;
}
 
void G4BoundingExtentScene::AccrueBoundingExtent (const G4VisExtent& newExtent)
{
 
  if (fExtent == G4VisExtent::GetNullExtent()) {  // First time.
 
    fExtent = newExtent;
 
  } else {
 
    if (newExtent.GetXmin() < fExtent.GetXmin()) fExtent.SetXmin(newExtent.GetXmin());
    if (newExtent.GetYmin() < fExtent.GetYmin()) fExtent.SetYmin(newExtent.GetYmin());
    if (newExtent.GetZmin() < fExtent.GetZmin()) fExtent.SetZmin(newExtent.GetZmin());
    if (newExtent.GetXmax() > fExtent.GetXmax()) fExtent.SetXmax(newExtent.GetXmax());
    if (newExtent.GetYmax() > fExtent.GetYmax()) fExtent.SetYmax(newExtent.GetYmax());
    if (newExtent.GetZmax() > fExtent.GetZmax()) fExtent.SetZmax(newExtent.GetZmax());
 
  }
}