G4VisCommandSceneAddScale Class Reference

#include <G4VisCommandsSceneAdd.hh>

Inheritance diagram for G4VisCommandSceneAddScale:

Collaboration diagram for G4VisCommandSceneAddScale:

Public Member Functions
	G4VisCommandSceneAddScale ()
virtual	~G4VisCommandSceneAddScale ()
G4String	GetCurrentValue (G4UIcommand *command)
void	SetNewValue (G4UIcommand *command, G4String newValue)
Public Member Functions inherited from G4VVisCommandScene
	G4VVisCommandScene ()
virtual	~G4VVisCommandScene ()
Public Member Functions inherited from G4VVisCommand
	G4VVisCommand ()
virtual	~G4VVisCommand ()
Public Member Functions inherited from G4UImessenger
	G4UImessenger ()
	G4UImessenger (const G4String &path, const G4String &dsc, G4bool commandsToBeBroadcasted=true)
virtual	~G4UImessenger ()
G4bool	operator== (const G4UImessenger &messenger) const
G4bool	CommandsShouldBeInMaster () const

Additional Inherited Members
Static Public Member Functions inherited from G4VVisCommand
static void	SetVisManager (G4VisManager *)
static const G4Colour &	GetCurrentColour ()
static G4double	GetCurrentLineWidth ()
static const G4Colour &	GetCurrentTextColour ()
static G4Text::Layout	GetCurrentTextLayout ()
static G4double	GetCurrentTextSize ()
Protected Member Functions inherited from G4VVisCommandScene
G4String	CurrentSceneName ()
Protected Member Functions inherited from G4VVisCommand
void	UpdateVisManagerScene (const G4String &sceneName="")
Protected Member Functions inherited from G4UImessenger
G4String	ItoS (G4int i)
G4String	DtoS (G4double a)
G4String	BtoS (G4bool b)
G4int	StoI (G4String s)
G4double	StoD (G4String s)
G4bool	StoB (G4String s)
void	AddUIcommand (G4UIcommand *newCommand)
void	CreateDirectory (const G4String &path, const G4String &dsc, G4bool commandsToBeBroadcasted=true)
template<typename T >
T *	CreateCommand (const G4String &cname, const G4String &dsc)
Static Protected Member Functions inherited from G4VVisCommand
static G4String	ConvertToString (G4double x, G4double y, const char *unitName)
static void	ConvertToDoublePair (const G4String &paramString, G4double &xval, G4double &yval)
Protected Attributes inherited from G4UImessenger
G4UIdirectory *	baseDir
G4String	baseDirName
G4bool	commandsShouldBeInMaster
Static Protected Attributes inherited from G4VVisCommand
static G4VisManager *	fpVisManager = 0
static G4int	fErrorCode = 0
static G4Colour	fCurrentColour = G4Colour::White()
static G4double	fCurrentLineWidth = 1.
static G4Colour	fCurrentTextColour = G4Colour::Blue()
static G4Text::Layout	fCurrentTextLayout = G4Text::left
static G4double	fCurrentTextSize = 12.
static G4ModelingParameters::PVNameCopyNoPath	fCurrentTouchablePath

Detailed Description

Definition at line 343 of file G4VisCommandsSceneAdd.hh.

Constructor & Destructor Documentation

G4VisCommandSceneAddScale::G4VisCommandSceneAddScale

(

)

Definition at line 1874 of file G4VisCommandsSceneAdd.cc.

                                                      {
  G4bool omitable;
  fpCommand = new G4UIcommand ("/vis/scene/add/scale", this);
  fpCommand -> SetGuidance
  ("Adds an annotated scale line to the current scene.");
  fpCommand -> SetGuidance
  ("If \"unit\" is \"auto\", length is roughly one tenth of the scene extent.");
  fpCommand -> SetGuidance
  ("If \"direction\" is \"auto\", scale is roughly in the plane of the current view.");
  fpCommand -> SetGuidance
  ("If \"placement\" is \"auto\", scale is placed at bottom left of current view."
   "\n  Otherwise placed at (xmid,ymid,zmid).");
  fpCommand -> SetGuidance (G4Scale::GetGuidanceString());
  G4UIparameter* parameter;
  parameter = new G4UIparameter ("length", 'd', omitable = true);
  parameter->SetDefaultValue (1.);
  fpCommand->SetParameter (parameter);
  parameter =  new G4UIparameter ("unit", 's', omitable = true);
  parameter->SetDefaultValue ("auto");
  fpCommand->SetParameter (parameter);
  parameter =  new G4UIparameter ("direction", 's', omitable = true);
  parameter->SetGuidance ("auto|x|y|z");
  parameter->SetDefaultValue ("auto");
  fpCommand->SetParameter (parameter);
  parameter =  new G4UIparameter ("red", 'd', omitable = true);
  parameter->SetDefaultValue (1.);
  fpCommand->SetParameter (parameter);
  parameter =  new G4UIparameter ("green", 'd', omitable = true);
  parameter->SetDefaultValue (0.);
  fpCommand->SetParameter (parameter);
  parameter =  new G4UIparameter ("blue", 'd', omitable = true);
  parameter->SetDefaultValue (0.);
  fpCommand->SetParameter (parameter);
  parameter =  new G4UIparameter ("placement", 's', omitable = true);
  parameter -> SetParameterCandidates("auto manual");
  parameter->SetDefaultValue  ("auto");
  fpCommand->SetParameter     (parameter);
  parameter =  new G4UIparameter ("xmid", 'd', omitable = true);
  parameter->SetDefaultValue (0.);
  fpCommand->SetParameter (parameter);
  parameter =  new G4UIparameter ("ymid", 'd', omitable = true);
  parameter->SetDefaultValue (0.);
  fpCommand->SetParameter (parameter);
  parameter =  new G4UIparameter ("zmid", 'd', omitable = true);
  parameter->SetDefaultValue (0.);
  fpCommand->SetParameter (parameter);
  parameter =  new G4UIparameter ("unit", 's', omitable = true);
  parameter->SetDefaultValue ("m");
  fpCommand->SetParameter (parameter);
}

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G4VisCommandSceneAddScale::~G4VisCommandSceneAddScale ( )

virtual

Definition at line 1925 of file G4VisCommandsSceneAdd.cc.

                                                       {
  delete fpCommand;
}

Member Function Documentation

G4String G4VisCommandSceneAddScale::GetCurrentValue ( G4UIcommand *  command )

virtual

Reimplemented from G4UImessenger.

Definition at line 1929 of file G4VisCommandsSceneAdd.cc.

                                                                 {
  return "";
}

void G4VisCommandSceneAddScale::SetNewValue ( G4UIcommand *  command, G4String  newValue  )

virtual

Reimplemented from G4UImessenger.

Definition at line 1933 of file G4VisCommandsSceneAdd.cc.

                                                                            {

  G4VisManager::Verbosity verbosity = fpVisManager->GetVerbosity();
  G4bool warn = verbosity >= G4VisManager::warnings;

  G4Scene* pScene = fpVisManager->GetCurrentScene();
  if (!pScene) {
    if (verbosity >= G4VisManager::errors) {
      G4cerr << "ERROR: No current scene.  Please create one." << G4endl;
    }
    return;
  } else {
    if (pScene->GetExtent().GetExtentRadius() <= 0.) {
      if (verbosity >= G4VisManager::errors) {
        G4cerr
  << "ERROR: Scene has no extent. Add volumes or use \"/vis/scene/add/extent\"."
        << G4endl;
      }
      return;
    }
  }

  G4double userLength, red, green, blue, xmid, ymid, zmid;
  G4String userLengthUnit, direction, auto_manual, positionUnit;
  std::istringstream is (newValue);
  is >> userLength >> userLengthUnit >> direction
     >> red >> green >> blue
     >> auto_manual
     >> xmid >> ymid >> zmid >> positionUnit;

  G4double length = userLength;
  const G4VisExtent& sceneExtent = pScene->GetExtent();  // Existing extent.
  if (userLengthUnit == "auto") {
    const G4double lengthMax = 0.5 * sceneExtent.GetExtentRadius();
    const G4double intLog10Length = std::floor(std::log10(lengthMax));
    length = std::pow(10,intLog10Length);
    if (5.*length < lengthMax) length *= 5.;
    else if (2.*length < lengthMax) length *= 2.;
  } else {
    length *= G4UIcommand::ValueOf(userLengthUnit);
  }
  G4String annotation = G4BestUnit(length,"Length");

  G4double unit = G4UIcommand::ValueOf(positionUnit);
  xmid *= unit; ymid *= unit; zmid *= unit;

  G4Scale::Direction scaleDirection (G4Scale::x);
  if (direction(0) == 'y') scaleDirection = G4Scale::y;
  if (direction(0) == 'z') scaleDirection = G4Scale::z;

  G4VViewer* pViewer = fpVisManager->GetCurrentViewer();
  if (!pViewer) {
    if (verbosity >= G4VisManager::errors) {
      G4cerr <<
    "ERROR: G4VisCommandSceneAddScale::SetNewValue: no viewer."
    "\n  Auto direction needs a viewer."
         << G4endl;
    }
    return;
  }

  const G4Vector3D& vp =
    pViewer->GetViewParameters().GetViewpointDirection();
  const G4Vector3D& up =
    pViewer->GetViewParameters().GetUpVector();

  if (direction == "auto") {  // Takes cue from viewer.
    if (std::abs(vp.x()) > std::abs(vp.y()) &&
    std::abs(vp.x()) > std::abs(vp.z())) {  // x viewpoint
      if (std::abs(up.y()) > std::abs(up.z())) scaleDirection = G4Scale::z;
      else scaleDirection = G4Scale::y;
    }
    else if (std::abs(vp.y()) > std::abs(vp.x()) &&
         std::abs(vp.y()) > std::abs(vp.z())) {  // y viewpoint
      if (std::abs(up.x()) > std::abs(up.z())) scaleDirection = G4Scale::z;
      else scaleDirection = G4Scale::x;
    }
    else if (std::abs(vp.z()) > std::abs(vp.x()) &&
         std::abs(vp.z()) > std::abs(vp.y())) {  // z viewpoint
      if (std::abs(up.y()) > std::abs(up.x())) scaleDirection = G4Scale::x;
      else scaleDirection = G4Scale::y;
    }
  }

  G4bool autoPlacing = false; if (auto_manual == "auto") autoPlacing = true;
  // Parameters read and interpreted.

  // Useful constants, etc...
  const G4double halfLength(length / 2.);
  const G4double comfort(0.01);  // 0.15 seems too big.  0.05 might be better.
  const G4double freeLengthFraction (1. + 2. * comfort);

  const G4double xmin = sceneExtent.GetXmin();
  const G4double xmax = sceneExtent.GetXmax();
  const G4double ymin = sceneExtent.GetYmin();
  const G4double ymax = sceneExtent.GetYmax();
  const G4double zmin = sceneExtent.GetZmin();
  const G4double zmax = sceneExtent.GetZmax();

  // Test existing extent and issue warnings...
  G4bool worried = false;
  if (sceneExtent.GetExtentRadius() == 0) {
    worried = true;
    if (verbosity >= G4VisManager::warnings) {
      G4cout <<
    "WARNING: Existing scene does not yet have any extent."
    "\n  Maybe you have not yet added any geometrical object."
         << G4endl;
    }
  }
  // Test existing scene for room...
  G4bool room  = true;
  switch (scaleDirection) {
  case G4Scale::x:
    if (freeLengthFraction * (xmax - xmin) < length) room = false;
    break;
  case G4Scale::y:
    if (freeLengthFraction * (ymax - ymin) < length) room = false;
    break;
  case G4Scale::z:
    if (freeLengthFraction * (zmax - zmin) < length) room = false;
    break;
  }
  if (!room) {
    worried = true;
    if (verbosity >= G4VisManager::warnings) {
      G4cout <<
    "WARNING: Not enough room in existing scene.  Maybe scale is too long."
         << G4endl;
    }
  }
  if (worried) {
    if (verbosity >= G4VisManager::warnings) {
      G4cout <<
    "WARNING: The scale you have asked for is bigger than the existing"
    "\n  scene.  Maybe you have added it too soon.  It is recommended that"
    "\n  you add the scale last so that it can be correctly auto-positioned"
    "\n  so as not to be obscured by any existing object and so that the"
    "\n  view parameters can be correctly recalculated."
         << G4endl;
    }
  }

  // Let's go ahead a construct a scale and a scale model.  Since the
  // placing is done here, this G4Scale is *not* auto-placed...
  G4Scale scale(length, annotation, scaleDirection,
        false, xmid, ymid, zmid,
                fCurrentTextSize);
  G4VisAttributes visAttr(G4Colour(red, green, blue));
  scale.SetVisAttributes(visAttr);
  G4VModel* model = new G4ScaleModel(scale);
  G4String globalDescription = model->GetGlobalDescription();
  globalDescription += " (" + newValue + ")";
  model->SetGlobalDescription(globalDescription);

  // Now figure out the extent...
  //
  // From the G4Scale.hh:
  //
  // This creates a representation of annotated line in the specified
  // direction with tick marks at the end.  If autoPlacing is true it
  // is required to be centred at the front, right, bottom corner of
  // the world space, comfortably outside the existing bounding
  // box/sphere so that existing objects do not obscure it.  Otherwise
  // it is required to be drawn with mid-point at (xmid, ymid, zmid).
  //
  // The auto placing algorithm might be:
  //   x = xmin + (1 + comfort) * (xmax - xmin)
  //   y = ymin - comfort * (ymax - ymin)
  //   z = zmin + (1 + comfort) * (zmax - zmin)
  //   if direction == x then (x - length,y,z) to (x,y,z)
  //   if direction == y then (x,y,z) to (x,y + length,z)
  //   if direction == z then (x,y,z - length) to (x,y,z)
  //
  // End of clip from G4Scale.hh:
  //
  // Implement this in two parts.  Here, use the scale's extent to
  // "expand" the scene's extent.  Then rendering - in
  // G4VSceneHandler::AddPrimitive(const G4Scale&) - simply has to
  // ensure it's within the new extent.
  //

  G4double sxmid(xmid), symid(ymid), szmid(zmid);
  if (autoPlacing) {
    // Aim to place at bottom right of screen in current view.
    // Give some comfort zone.
    const G4double xComfort = comfort * (xmax - xmin);
    const G4double yComfort = comfort * (ymax - ymin);
    const G4double zComfort = comfort * (zmax - zmin);
    switch (scaleDirection) {
    case G4Scale::x:
      if (vp.z() > 0.) {
    sxmid = xmax + xComfort;
    symid = ymin - yComfort;
    szmid = zmin - zComfort;
      } else {
    sxmid = xmin - xComfort;
    symid = ymin - yComfort;
    szmid = zmax + zComfort;
      }
      break;
    case G4Scale::y:
      if (vp.x() > 0.) {
    sxmid = xmin - xComfort;
    symid = ymax + yComfort;
    szmid = zmin - zComfort;
      } else {
    sxmid = xmax + xComfort;
    symid = ymin - yComfort;
    szmid = zmin - zComfort;
      }
      break;
    case G4Scale::z:
      if (vp.x() > 0.) {
    sxmid = xmax + xComfort;
    symid = ymin - yComfort;
    szmid = zmax + zComfort;
      } else {
    sxmid = xmin - xComfort;
    symid = ymin - yComfort;
    szmid = zmax + zComfort;
      }
      break;
    }
  }

  /* Old code - kept for future reference.
  G4double sxmid(xmid), symid(ymid), szmid(zmid);
  if (autoPlacing) {
    sxmid = xmin + onePlusComfort * (xmax - xmin);
    symid = ymin - comfort * (ymax - ymin);
    szmid = zmin + onePlusComfort * (zmax - zmin);
    switch (scaleDirection) {
    case G4Scale::x:
      sxmid -= halfLength;
      break;
    case G4Scale::y:
      symid += halfLength;
      break;
    case G4Scale::z:
      szmid -= halfLength;
      break;
    }
  }
  */

  /* sxmin, etc., not actually used.  Comment out to prevent compiler
     warnings but keep in case need in future.  Extract transform and
     scaleExtent into reduced code below.
  G4double sxmin(sxmid), sxmax(sxmid);
  G4double symin(symid), symax(symid);
  G4double szmin(szmid), szmax(szmid);
  G4Transform3D transform;
  G4VisExtent scaleExtent;
  switch (scaleDirection) {
  case G4Scale::x:
    sxmin = sxmid - halfLength;
    sxmax = sxmid + halfLength;
    scaleExtent = G4VisExtent(-halfLength,halfLength,0,0,0,0);
    break;
  case G4Scale::y:
    symin = symid - halfLength;
    symax = symid + halfLength;
    transform = G4RotateZ3D(halfpi);
    scaleExtent = G4VisExtent(0,0,-halfLength,halfLength,0,0);
    break;
  case G4Scale::z:
    szmin = szmid - halfLength;
    szmax = szmid + halfLength;
    transform = G4RotateY3D(halfpi);
    scaleExtent = G4VisExtent(0,0,0,0,-halfLength,halfLength);
    break;
  }
  */
  G4Transform3D transform;
  G4VisExtent scaleExtent;
  switch (scaleDirection) {
  case G4Scale::x:
    scaleExtent = G4VisExtent(-halfLength,halfLength,0,0,0,0);
    break;
  case G4Scale::y:
    transform = G4RotateZ3D(halfpi);
    scaleExtent = G4VisExtent(0,0,-halfLength,halfLength,0,0);
    break;
  case G4Scale::z:
    transform = G4RotateY3D(halfpi);
    scaleExtent = G4VisExtent(0,0,0,0,-halfLength,halfLength);
    break;
  }
  transform = G4Translate3D(sxmid,symid,szmid) * transform;


  model->SetTransformation(transform);
  // Note: it is the responsibility of the model to act upon this, but
  // the extent is in local coordinates...
  model->SetExtent(scaleExtent);
  // This extent gets "added" to existing scene extent in
  // AddRunDurationModel below.

  const G4String& currentSceneName = pScene -> GetName ();
  G4bool successful = pScene -> AddRunDurationModel (model, warn);
  if (successful) {
    if (verbosity >= G4VisManager::confirmations) {
      G4cout << "Scale of " << annotation
         << " added to scene \"" << currentSceneName << "\".";
      if (verbosity >= G4VisManager::parameters) {
    G4cout << "\n  with extent " << scaleExtent
           << "\n  at " << transform.getRotation()
           << transform.getTranslation();
      }
      G4cout << G4endl;
    }
  }
  else G4VisCommandsSceneAddUnsuccessful(verbosity);
  UpdateVisManagerScene (currentSceneName);
}

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

• source/geant4.10.03.p03/source/visualization/management/include/G4VisCommandsSceneAdd.hh
• source/geant4.10.03.p03/source/visualization/management/src/G4VisCommandsSceneAdd.cc