Extends Geant4's G4PVPlacement with the corresponding OCCT placement. More...

#include <G4OCCTPlacement.hh>

Inheritance diagram for G4OCCTPlacement:

Public Member Functions
	G4OCCTPlacement (G4RotationMatrix pRot, const G4ThreeVector &tlate, G4LogicalVolume pCurrentLogical, const G4String &pName, G4LogicalVolume *pMotherLogical, G4bool pMany, G4int pCopyNo, const TopLoc_Location &location=TopLoc_Location(), G4bool pSurfChk=false)

	~G4OCCTPlacement () override=default

const TopLoc_Location &	GetOCCTLocation () const
	Read access to the OCCT placement location.

void	SetOCCTLocation (const TopLoc_Location &location)
	Replace the OCCT placement location.

Detailed Description

Extends Geant4's G4PVPlacement with the corresponding OCCT placement.

Extends Geant4's G4PVPlacement to carry the corresponding OCCT placement (TopLoc_Location), enabling round-trip translation between the two geometry frameworks.

In OCCT, placement information is encoded in TopLoc_Location objects that are attached to TopoDS_Shape instances. A TopLoc_Location wraps a gp_Trsf (4×3 homogeneous transformation), which may be a pure rotation, translation, or a general rigid-body motion—closely matching the rotation (G4RotationMatrix*) and translation (G4ThreeVector) pair stored in a Geant4 physical volume.

The correspondence between the two representations is: G4PVPlacement / G4VPhysicalVolume ↔ TopoDS_Shape with TopLoc_Location G4RotationMatrix + G4ThreeVector ↔ gp_Trsf (stored in TopLoc_Location)

Design strategies for efficiently converting between these representations are discussed in docs/geometry_mapping.md.

NOTE: The OCCT location stored here is informational only; conversion helpers are planned for a future milestone.

Definition at line 39 of file G4OCCTPlacement.hh.

Constructor & Destructor Documentation

◆ G4OCCTPlacement()

G4OCCTPlacement::G4OCCTPlacement	(	G4RotationMatrix *	pRot,
		const G4ThreeVector &	tlate,
		G4LogicalVolume *	pCurrentLogical,
		const G4String &	pName,
		G4LogicalVolume *	pMotherLogical,
		G4bool	pMany,
		G4int	pCopyNo,
		const TopLoc_Location &	location = `TopLoc_Location()`,
		G4bool	pSurfChk = `false`
	)

Construct a placement using a rotation matrix and translation.

Parameters

pRot	Rotation relative to the mother volume (may be nullptr for identity).
tlate	Translation relative to the mother volume.
pCurrentLogical	Logical volume being placed.
pName	Name of this physical volume.
pMotherLogical	Mother logical volume (nullptr for world).
pMany	Overlapping flag (must be false for now).
pCopyNo	Copy number.
location	Corresponding OCCT placement location (optional).
pSurfChk	Run overlap check during construction if true.

Definition at line 9 of file G4OCCTPlacement.cc.

◆ ~G4OCCTPlacement()

G4OCCTPlacement::~G4OCCTPlacement ( )

overridedefault

Member Function Documentation

◆ GetOCCTLocation()

const TopLoc_Location & G4OCCTPlacement::GetOCCTLocation ( ) const

inline

Read access to the OCCT placement location.

Definition at line 65 of file G4OCCTPlacement.hh.

◆ SetOCCTLocation()

void G4OCCTPlacement::SetOCCTLocation ( const TopLoc_Location & location )

inline

Replace the OCCT placement location.

Definition at line 68 of file G4OCCTPlacement.hh.

The documentation for this class was generated from the following files:

include/G4OCCT/G4OCCTPlacement.hh
src/G4OCCTPlacement.cc