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/// \file DrawGeometryVisAction.cc
/// \brief Implementation of the DrawGeometryVisAction class

#include "DrawGeometryVisAction.hh"

#include "DetectorConstruction.hh"

#include "G4LogicalVolume.hh"
#include "G4PhysicalVolumeModel.hh"
#include "G4SystemOfUnits.hh"
#include "G4VPhysicalVolume.hh"
#include "G4VSolid.hh"
#include "G4VVisManager.hh"

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DrawGeometryVisAction::DrawGeometryVisAction()
{
  // Get a physical volume from your detector construction
  fDetectorConstruction = new B1::DetectorConstruction();
  // (I think, properly, we should delete this in the destructor.)
  fPhysicalVolume = fDetectorConstruction->Construct();
  // (I think the deletion of constructed volumes is handled by the volume stores.)
  // Give this an overall transform to avoid clash with other vis action(s) in this case
  fTransform = G4Translate3D(-20 * cm, 20 * cm, 0);
  // Get extent and transform if required
  G4PhysicalVolumeModel pvModel(fPhysicalVolume);
  fExtent = pvModel.GetExtent();
  fExtent.Transform(fTransform);
}

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DrawGeometryVisAction::~DrawGeometryVisAction()
{
  delete fDetectorConstruction;
}

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void DrawGeometryVisAction::Draw()
{
  G4VVisManager* pVisManager = G4VVisManager::GetConcreteInstance();
  if (pVisManager) {
    pVisManager->DrawGeometry(fPhysicalVolume, fTransform);
  }
}

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