g4system Geometry Builders

Builders that convert GEMC volume/material records into Geant4 geometry. More...

Collaboration diagram for g4system Geometry Builders:

Files
file	buildSolid.cc
	Implementation of the CAD-mesh solid builder for G4CadSystemFactory.
file	cadSystemFactory.h
	Factory that converts CAD files (PLY / STL) into Geant4 tessellated solids via CADMesh.
file	buildSolid.cc
	Implementation of G4NativeSystemFactory::buildSolid().
file	checkAndReturnParameters.cc
	Implementation of G4NativeSystemFactory helpers, including the parameter-count validator.
file	g4NativeObjectsFactory.h
	Factory that builds Geant4 native primitive solids (G4Box, G4Cons, G4Trap, ...) from GEMC GVolume records.
file	g4objectsFactory.cc
	Default implementations shared by all detector-specific factories.
file	g4objectsFactory.h
	Abstract factory that converts a GEMC DB GVolume into Geant4 objects.
file	geant4Dependencies.cc
	Dependency checks used by g4system factories before constructing solids and placements.
file	g4volume.cc
	Implementation of the small pointer-holder utilities in G4Volume.
file	g4volume.h
	Thin wrapper that stores the Geant4 solid/logical/physical triple for one GEMC volume.
file	g4world.cc
	Implementation of G4World, including factory creation, material building, and volume dependency resolution.
file	g4world.h
	High-level builder that turns a GEMC world description into Geant4 geometry.

Data Structures
class	G4CadSystemFactory
	Builds a tessellated solid from CAD files using CADMesh. More...
class	G4NativeSystemFactory
	Implements solid creation for Geant4 CSG primitives and validates constructor parameter counts. More...
class	G4ObjectsFactory
	Base class orchestrating the conversion of a GVolume into a Geant4 representation. More...
class	G4Volume
	Convenience container holding a Geant4 solid, logical, and physical volume. More...
class	G4World
	Builds a full Geant4 geometry "world" from a GEMC GWorld description. More...

Detailed Description

This group contains the world builder and object factories responsible for translating GEMC geometry records into:

• Geant4 solids
• Geant4 logical volumes (material + visual attributes)
• Geant4 physical volumes (placements and hierarchy)

The core design supports out-of-order construction by performing dependency checks and retrying volumes/materials until prerequisites (mother volume, copy-of source, boolean operands, etc.) are available.