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geant4/source/visualization/modeling/include/G4PhysicalVolumeMassScene.hh
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2016-12-09 12:35:28 +01:00

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//
// ********************************************************************
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// * *
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// * the Geant4 Collaboration. It is provided under the terms and *
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//
//
// $Id: G4PhysicalVolumeMassScene.hh 99076 2016-09-01 12:40:47Z gcosmo $
//
//
// John Allison 12th September 2004
// Class Description:
//
// Calculates the mass of a geometry tree taking into account daughters
// up to the depth specified in the G4PhysicalVolumeModel. Culling is
// ignored so that all volumes are seen.
//
// Do not use this for a "parallel world" for which materials are not
// defined. Use only for the material world.
//
// The calculation is quite tricky, since it involves subtracting the
// mass of that part of the mother that is occupied by each daughter and
// then adding the mass of the daughter, and so on down the heirarchy.
//
// Usage for a given G4PhysicalVolumeModel* pvModel:
// G4PhysicalVolumeMassScene massScene(pvModel);
// pvModel->DescribeYourselfTo (massScene);
// G4double volume = massScene.GetVolume();
// G4double mass = massScene.GetMass();
// massScene.Reset();
// See, for example, G4ASCIITreeSceneHandler::EndModeling().
#ifndef G4PHYSICALVOLUMEMASSSCENE_HH
#define G4PHYSICALVOLUMEMASSSCENE_HH
#include "G4PseudoScene.hh"
#include <deque>
class G4VPhysicalVolume;
class G4LogicalVolume;
class G4PhysicalVolumeModel;
class G4Material;
class G4PhysicalVolumeMassScene: public G4PseudoScene
{
public:
G4PhysicalVolumeMassScene (G4PhysicalVolumeModel*);
virtual ~G4PhysicalVolumeMassScene ();
public: // With description
G4double GetVolume () const {return fVolume;}
// Overall volume.
G4double GetMass () const {return fMass;}
// Mass of whole tree, i.e., accounting for all daughters.
void Reset ();
// Reset for subsequent re-use.
private:
void ProcessVolume (const G4VSolid&);
G4PhysicalVolumeModel* fpPVModel;
G4double fVolume;
G4double fMass;
G4VPhysicalVolume* fpLastPV;
G4int fPVPCount;
G4int fLastDepth;
G4double fLastDensity;
std::deque<G4double> fDensityStack;
};
#endif