G4TrajectoryDrawerUtils Namespace Reference

Enumerations
enum	TimesValidity { InvalidTimes , ValidTimes }

Functions
void	GetPoints (const G4VTrajectory &traj, G4Polyline &trajectoryLine, G4Polymarker &auxiliaryPoints, G4Polymarker &stepPoints)
void	DrawLineAndPoints (const G4VTrajectory &traj, const G4VisTrajContext &)
TimesValidity	GetPointsAndTimes (const G4VTrajectory &traj, const G4VisTrajContext &context, G4Polyline &trajectoryLine, G4Polymarker &auxiliaryPoints, G4Polymarker &stepPoints, std::vector< G4double > &trajectoryLineTimes, std::vector< G4double > &auxiliaryPointTimes, std::vector< G4double > &stepPointTimes)

Enumeration Type Documentation

TimesValidity

enum G4TrajectoryDrawerUtils::TimesValidity

Enumerator
InvalidTimes
ValidTimes

Definition at line 45 of file G4TrajectoryDrawerUtils.cc.

{InvalidTimes, ValidTimes};

Function Documentation

DrawLineAndPoints()

void G4TrajectoryDrawerUtils::DrawLineAndPoints	(	const G4VTrajectory &	traj,
		const G4VisTrajContext &	context )

Definition at line 316 of file G4TrajectoryDrawerUtils.cc.

  {
    // Return if don't need to do anything
    if (!context.GetDrawLine() && !context.GetDrawAuxPts() && !context.GetDrawStepPts()) return;
    
    // Get points and times (times are returned only if time-slicing
    // is requested).
    G4Polyline trajectoryLine;
    G4Polymarker stepPoints;
    G4Polymarker auxiliaryPoints;
    std::vector<G4double> trajectoryLineTimes;
    std::vector<G4double> stepPointTimes;
    std::vector<G4double> auxiliaryPointTimes;
 
    TimesValidity validity = GetPointsAndTimes
      (traj, context,
       trajectoryLine, auxiliaryPoints, stepPoints,
       trajectoryLineTimes, auxiliaryPointTimes, stepPointTimes);
    
    if (validity == ValidTimes) {
 
      SliceLine(context.GetTimeSliceInterval(),
        trajectoryLine, trajectoryLineTimes);
 
      DrawWithTime(context,
           trajectoryLine, auxiliaryPoints, stepPoints,
           trajectoryLineTimes, auxiliaryPointTimes, stepPointTimes);
 
    } else {
 
      DrawWithoutTime(context, trajectoryLine, auxiliaryPoints, stepPoints);
 
    }
  }

Referenced by G4TrajectoryDrawByAttribute::Draw(), G4TrajectoryDrawByCharge::Draw(), G4TrajectoryDrawByEncounteredVolume::Draw(), G4TrajectoryDrawByOriginVolume::Draw(), G4TrajectoryDrawByParticleID::Draw(), and G4TrajectoryGenericDrawer::Draw().

GetPoints()

void G4TrajectoryDrawerUtils::GetPoints	(	const G4VTrajectory &	traj,
		G4Polyline &	trajectoryLine,
		G4Polymarker &	auxiliaryPoints,
		G4Polymarker &	stepPoints )

GetPointsAndTimes()

TimesValidity G4TrajectoryDrawerUtils::GetPointsAndTimes	(	const G4VTrajectory &	traj,
		const G4VisTrajContext &	context,
		G4Polyline &	trajectoryLine,
		G4Polymarker &	auxiliaryPoints,
		G4Polymarker &	stepPoints,
		std::vector< G4double > &	trajectoryLineTimes,
		std::vector< G4double > &	auxiliaryPointTimes,
		std::vector< G4double > &	stepPointTimes )

Definition at line 47 of file G4TrajectoryDrawerUtils.cc.

  {
    TimesValidity validity = InvalidTimes;
    if (context.GetTimeSliceInterval()) validity = ValidTimes;
 
    // Memory for last trajectory point position for auxiliary point
    // time interpolation algorithm.  There are no auxiliary points
    // for the first trajectory point, so its initial value is
    // immaterial.
    G4ThreeVector lastTrajectoryPointPosition;
 
    // Keep positions.  Don't store unless first or different.
    std::vector<G4ThreeVector> positions;
 
    for (G4int iPoint=0; iPoint<traj.GetPointEntries(); iPoint++) {
 
      G4VTrajectoryPoint* aTrajectoryPoint = traj.GetPoint(iPoint);
      const G4ThreeVector& trajectoryPointPosition =
    aTrajectoryPoint->GetPosition();
 
      // Only store if first or if different
      if (positions.size() == 0 ||
      trajectoryPointPosition != positions[positions.size()-1]) {
 
    // Pre- and Post-Point times from the trajectory point...
    G4double trajectoryPointPreTime = -std::numeric_limits<double>::max();
    G4double trajectoryPointPostTime = std::numeric_limits<double>::max();
 
    if (context.GetTimeSliceInterval() && validity == ValidTimes) {
 
      std::vector<G4AttValue>* trajectoryPointAttValues =
        aTrajectoryPoint->CreateAttValues();
      if (!trajectoryPointAttValues) {
        static G4bool warnedNoAttValues = false;
        if (!warnedNoAttValues) {
          G4warn <<
  "*************************************************************************"
  "\n*  WARNING: G4TrajectoryDrawerUtils::GetPointsAndTimes: no att values."
  "\n*************************************************************************"
             << G4endl;
          warnedNoAttValues = true;
        }
        validity = InvalidTimes;
      } else {
        G4bool foundPreTime = false, foundPostTime = false;
        for (std::vector<G4AttValue>::iterator i =
           trajectoryPointAttValues->begin();
         i != trajectoryPointAttValues->end(); ++i) {
          if (i->GetName() == "PreT") {
        trajectoryPointPreTime =
          G4UIcommand::ConvertToDimensionedDouble(i->GetValue());
        foundPreTime = true;
          }
          if (i->GetName() == "PostT") {
        trajectoryPointPostTime =
          G4UIcommand::ConvertToDimensionedDouble(i->GetValue());
        foundPostTime = true;
          }
        }
        if (!foundPreTime || !foundPostTime) {
          static G4bool warnedTimesNotFound = false;
          if (!warnedTimesNotFound) {
        G4warn <<
  "*************************************************************************"
  "\n*  WARNING: G4TrajectoryDrawerUtils::GetPointsAndTimes: times not found."
  "\n You need to specify \"/vis/scene/add/trajectories rich\""
  "\n*************************************************************************"
               << G4endl;
        warnedTimesNotFound = true;
          }
          validity = InvalidTimes;
        }
      }
          delete trajectoryPointAttValues;  // (Must be deleted after use.)
    }
 
    const std::vector<G4ThreeVector>* auxiliaries
      = aTrajectoryPoint->GetAuxiliaryPoints();
    if (0 != auxiliaries) {
      for (size_t iAux=0; iAux<auxiliaries->size(); ++iAux) {
        const G4ThreeVector& auxPointPosition = (*auxiliaries)[iAux];
        if (positions.size() == 0 ||
        auxPointPosition != positions[positions.size()-1]) {
          // Only store if first or if different
          positions.push_back(trajectoryPointPosition);
          trajectoryLine.push_back(auxPointPosition);
          auxiliaryPoints.push_back(auxPointPosition);
          if (validity == ValidTimes) {
        // Interpolate time for auxiliary points...
        G4double s1 =
          (auxPointPosition - lastTrajectoryPointPosition).mag();
        G4double s2 =
          (trajectoryPointPosition - auxPointPosition).mag();
        G4double t = trajectoryPointPreTime +
          (trajectoryPointPostTime - trajectoryPointPreTime) *
          (s1 / (s1 + s2));
        trajectoryLineTimes.push_back(t);
        auxiliaryPointTimes.push_back(t);
          }
        }
      }
    }
 
    positions.push_back(trajectoryPointPosition);
    trajectoryLine.push_back(trajectoryPointPosition);
    stepPoints.push_back(trajectoryPointPosition);
    if (validity == ValidTimes) {
      trajectoryLineTimes.push_back(trajectoryPointPostTime);
      stepPointTimes.push_back(trajectoryPointPostTime);
    }
        lastTrajectoryPointPosition = trajectoryPointPosition;
      }
    }
    return validity;    
  }

Referenced by DrawLineAndPoints().