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// $Id: G4RayTrajectory.cc,v 1.15 2006/06/29 21:24:21 gunter Exp $
// GEANT4 tag $Name:  $
//
//
//

///////////////////
//G4RayTrajectory.cc
///////////////////

#include "G4RayTrajectory.hh"
#include "G4RayTrajectoryPoint.hh"
#include "G4Step.hh"
#include "G4VPhysicalVolume.hh"
#include "G4VisManager.hh"
#include "G4VisAttributes.hh"
#include "G4Colour.hh"
#include "G4TransportationManager.hh"
#include "G4ios.hh"

G4Allocator<G4RayTrajectory> G4RayTrajectoryAllocator;

G4RayTrajectory :: G4RayTrajectory()
{
  positionRecord = new std::vector<G4RayTrajectoryPoint*>;
}

G4RayTrajectory :: G4RayTrajectory(G4RayTrajectory & right)
: G4VTrajectory()
{
  positionRecord = new std::vector<G4RayTrajectoryPoint*>;
  for(size_t i=0;i<right.positionRecord->size();i++)
  {
    G4RayTrajectoryPoint* rightPoint = (G4RayTrajectoryPoint*)
				((*(right.positionRecord))[i]);
    positionRecord->push_back(new G4RayTrajectoryPoint(*rightPoint));
  }
}

G4RayTrajectory :: ~G4RayTrajectory()
{
  //positionRecord->clearAndDestroy();
  for(size_t i=0;i<positionRecord->size();i++)
  { delete (*positionRecord)[i]; }
  positionRecord->clear();
  delete positionRecord;
}

void G4RayTrajectory::AppendStep(const G4Step* aStep)
{
  G4RayTrajectoryPoint* trajectoryPoint = new G4RayTrajectoryPoint();

  trajectoryPoint->SetStepLength(aStep->GetStepLength());

  G4Navigator* theNavigator 
    = G4TransportationManager::GetTransportationManager()->GetNavigatorForTracking();
  G4bool valid;
  G4ThreeVector theLocalNormal = theNavigator->GetLocalExitNormal(&valid);
  if(valid) { theLocalNormal = -theLocalNormal; }
  G4ThreeVector theGrobalNormal 
    = theNavigator->GetLocalToGlobalTransform().TransformAxis(theLocalNormal);
  trajectoryPoint->SetSurfaceNormal(theGrobalNormal);

  G4VPhysicalVolume* prePhys = aStep->GetPreStepPoint()->GetPhysicalVolume();
  const G4VisAttributes* preVisAtt = prePhys->GetLogicalVolume()->GetVisAttributes();
  G4VisManager* visManager = G4VisManager::GetInstance();
  if(visManager) {
    G4VViewer* viewer = visManager->GetCurrentViewer();
    if (viewer) {
      preVisAtt = viewer->GetApplicableVisAttributes(preVisAtt);
    }
  }
  trajectoryPoint->SetPreStepAtt(preVisAtt);

  const G4VPhysicalVolume* postPhys = aStep->GetPostStepPoint()->GetPhysicalVolume();
  const G4VisAttributes* postVisAtt = NULL;
  if(postPhys) {
    postVisAtt = postPhys->GetLogicalVolume()->GetVisAttributes();
    if(visManager) {
      G4VViewer* viewer = visManager->GetCurrentViewer();
      if (viewer) {
	postVisAtt = viewer->GetApplicableVisAttributes(postVisAtt);
      }
    }
  }
  trajectoryPoint->SetPostStepAtt(postVisAtt);

  positionRecord->push_back(trajectoryPoint);
}

void G4RayTrajectory::ShowTrajectory(std::ostream&) const
{ }

void G4RayTrajectory::MergeTrajectory(G4VTrajectory* secondTrajectory)
{
  if(!secondTrajectory) return;

  G4RayTrajectory* seco = (G4RayTrajectory*)secondTrajectory;
  G4int ent = seco->GetPointEntries();
  for(G4int i=0;i<ent;i++)
  { positionRecord->push_back((G4RayTrajectoryPoint*)seco->GetPoint(i)); }
  seco->positionRecord->clear();
}