Gabriele Cosmo
118 lines
4.1 KiB
C++
118 lines
4.1 KiB
C++
// This code implementation is the intellectual property of
|
|
// the GEANT4 collaboration.
|
|
//
|
|
// By copying, distributing or modifying the Program (or any work
|
|
// based on the Program) you indicate your acceptance of this statement,
|
|
// and all its terms.
|
|
//
|
|
// $Id: G4VTouchable.hh,v 1.1.12.1 1999/12/07 20:48:12 gunter Exp $
|
|
// GEANT4 tag $Name: geant4-01-00 $
|
|
//
|
|
//
|
|
// class G4VTouchable Paul Kent August 1996
|
|
//
|
|
// Modified: John Apostolakis, July 1997: new methods to Retrieve replica
|
|
// and history information
|
|
// (intention is to hide NavigHistory)
|
|
// Motivation:
|
|
// ----------
|
|
// Base class for `touchable' objects capable of maintaining an
|
|
// association between parts of the geometrical hierarchy (volumes
|
|
// &/or solids) and their resultant transformation
|
|
//
|
|
// Utilisation:
|
|
// -----------
|
|
//
|
|
// A touchable is a geometrical volume (solid) which has a unique
|
|
// placement in a detector description. It an abstract base class which
|
|
// can be implemented in a variety of ways. Each way must provide the
|
|
// capabilities of obtaining the transformation and solid that is described by
|
|
// the touchable.
|
|
//
|
|
// All G4VTouchable implementations must respond to the two following
|
|
// "requests":
|
|
//
|
|
// 1) GetTranslation and GetRotation that return the components of the
|
|
// volume's transformation
|
|
//
|
|
// 2) GetSolid that gives the solid of this touchable.
|
|
//
|
|
//
|
|
// Additional capabilities are available from implementations with more
|
|
// information. These have a default implementation that causes an exception.
|
|
//
|
|
// Several capabilities are available from touchables with physical volumes:
|
|
//
|
|
// 3) GetVolume gives the physical volume
|
|
//
|
|
// 4) GetReplicaNumber gives the replica number of the physical volume,
|
|
// if it is replicated.
|
|
//
|
|
// Touchables that Store volume hierarchy (history) have the whole stack of
|
|
// parent volumes available. Thus it is possible to add a little more state
|
|
// in order to extend its functionality. We add a "pointer" to a level and a
|
|
// member function to move the level in this stack. Then
|
|
// calling the above member functions for another level the information for
|
|
// that level can be retrieved.
|
|
//
|
|
// The top of the history tree is, by convention, the world volume.
|
|
//
|
|
// 5) GetHistoryDepth gives the depth of the history tree
|
|
//
|
|
// 6) GetReplicaNumber, GetVolume, GetTranslation and GetRotation call
|
|
// each be called with a depth argument. They return the value of the
|
|
// respective level of the touchable.
|
|
//
|
|
// 7) MoveUpHistory( num ) moves the current pointer inside the
|
|
// touchable to point "num" levels up the history tree. Thus, eg, calling
|
|
// it with num=1 will cause the internal pointer to move to the mother
|
|
// of the current volume.
|
|
// -------> THIS method MODIFIES the touchable <--------
|
|
//
|
|
// An update method, with different arguments is available, so
|
|
// that the information in a touchable can be updated:
|
|
//
|
|
// 8) UpdateYourself takes a physical volume pointer and can additionally
|
|
// take a NavigationHistory.
|
|
|
|
|
|
#ifndef G4VTOUCHABLE_HH
|
|
#define G4VTOUCHABLE_HH
|
|
|
|
#include "globals.hh"
|
|
|
|
class G4VPhysicalVolume;
|
|
class G4VSolid;
|
|
class G4NavigationHistory;
|
|
|
|
#include "G4RotationMatrix.hh"
|
|
#include "G4ThreeVector.hh"
|
|
|
|
class G4VTouchable
|
|
{
|
|
public:
|
|
G4VTouchable();
|
|
virtual ~G4VTouchable();
|
|
|
|
virtual const G4ThreeVector& GetTranslation(G4int depth=0) const = 0;
|
|
virtual const G4RotationMatrix* GetRotation(G4int depth=0) const = 0;
|
|
virtual G4VPhysicalVolume* GetVolume(G4int depth=0) const;
|
|
virtual G4VSolid* GetSolid(G4int depth=0) const;
|
|
|
|
// Methods for touchables with history
|
|
virtual G4int GetReplicaNumber(G4int depth=0) const;
|
|
virtual G4int GetHistoryDepth() const;
|
|
virtual G4int MoveUpHistory( G4int num_levels = 1 );
|
|
// virtual void ResetLevel();
|
|
|
|
// Update method
|
|
virtual void UpdateYourself( G4VPhysicalVolume* pPhysVol,
|
|
const G4NavigationHistory* history=NULL);
|
|
|
|
// Should this method be depricated ? It is used in G4Navigator!
|
|
virtual const G4NavigationHistory* GetHistory() const;
|
|
};
|
|
|
|
#include "G4VTouchable.icc"
|
|
#endif
|