Import Geant4 9.0.0 source tree

2016-06-09 15:16:48 +02:00
parent 75c7fd177d
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+//
+// ********************************************************************
+// * License and Disclaimer                                           *
+// *                                                                  *
+// * The  Geant4 software  is  copyright of the Copyright Holders  of *
+// * the Geant4 Collaboration.  It is provided  under  the terms  and *
+// * conditions of the Geant4 Software License,  included in the file *
+// * LICENSE and available at  http://cern.ch/geant4/license .  These *
+// * include a list of copyright holders.                             *
+// *                                                                  *
+// * Neither the authors of this software system, nor their employing *
+// * institutes,nor the agencies providing financial support for this *
+// * work  make  any representation or  warranty, express or implied, *
+// * regarding  this  software system or assume any liability for its *
+// * use.  Please see the license in the file  LICENSE  and URL above *
+// * for the full disclaimer and the limitation of liability.         *
+// *                                                                  *
+// * This  code  implementation is the result of  the  scientific and *
+// * technical work of the GEANT4 collaboration.                      *
+// * By using,  copying,  modifying or  distributing the software (or *
+// * any work based  on the software)  you  agree  to acknowledge its *
+// * use  in  resulting  scientific  publications,  and indicate your *
+// * acceptance of all terms of the Geant4 Software license.          *
+// ********************************************************************
+//
+//
+// $Id: G4ErrorCylSurfaceTarget.cc,v 1.4 2007/06/20 12:50:48 arce Exp $
+// GEANT4 tag $Name: geant4-09-00 $
+//
+//
+// --------------------------------------------------------------------
+//      GEANT 4 class implementation file 
+// --------------------------------------------------------------------
+
+#include "G4ErrorCylSurfaceTarget.hh"
+#include "G4GeometryTolerance.hh"
+
+#ifdef G4VERBOSE
+#include "G4ErrorPropagatorData.hh" //for verbosity checking
+#endif
+
+#include "geomdefs.hh"
+#include "G4Plane3D.hh"
+
+//---------------------------------------------------------------------
+
+G4ErrorCylSurfaceTarget::
+G4ErrorCylSurfaceTarget( const G4double& radius,
+                         const G4ThreeVector& trans,
+                         const G4RotationMatrix& rotm )
+  : fradius(radius)
+{
+  theType = G4ErrorTarget_CylindricalSurface;
+
+  ftransform = G4AffineTransform( rotm.inverse(), -trans );
+#ifdef G4VERBOSE
+  if(G4ErrorPropagatorData::verbose() >= 2 ) { 
+    Dump( " $$$ creating G4ErrorCylSurfaceTarget ");
+  }
+#endif
+}
+
+//---------------------------------------------------------------------
+
+G4ErrorCylSurfaceTarget::
+G4ErrorCylSurfaceTarget( const G4double& radius,
+                         const G4AffineTransform& trans )
+  : fradius(radius), ftransform(trans.Inverse())
+{
+  theType = G4ErrorTarget_CylindricalSurface;
+
+#ifdef G4VERBOSE
+  if(G4ErrorPropagatorData::verbose() >= 2 )
+  { 
+    Dump( " $$$ creating G4ErrorCylSurfaceTarget ");
+  }
+#endif
+}
+
+//---------------------------------------------------------------------
+
+G4ErrorCylSurfaceTarget::~G4ErrorCylSurfaceTarget()
+{
+}
+
+//---------------------------------------------------------------------
+
+G4double G4ErrorCylSurfaceTarget::
+GetDistanceFromPoint( const G4ThreeVector& point,
+                      const G4ThreeVector& dir ) const
+{
+  if( dir.mag() == 0. )
+  {
+    G4Exception("G4ErrorCylSurfaceTarget::GetDistanceFromPoint()",
+                "InvalidSetup", FatalException, "Direction is zero !");
+  }
+
+  //----- Get intersection point
+  G4ThreeVector localPoint = ftransform.TransformPoint( point );
+  G4ThreeVector localDir = ftransform.TransformAxis( dir ); 
+  G4ThreeVector inters = IntersectLocal(localPoint, localDir);
+
+  G4double dist = (localPoint-inters).mag();
+  
+#ifdef G4VERBOSE
+  if(G4ErrorPropagatorData::verbose() >= 3 )
+  { 
+    G4cout << " G4ErrorCylSurfaceTarget::GetDistanceFromPoint():" << G4endl
+           << " Global point " << point << " dir " << dir << G4endl
+           << " Intersection " << inters << G4endl
+           << " Distance " << dist << G4endl;
+    Dump( " CylSurface: " );
+  }
+#endif
+
+  return dist;
+}
+
+
+//---------------------------------------------------------------------
+
+G4double G4ErrorCylSurfaceTarget::
+GetDistanceFromPoint( const G4ThreeVector& point ) const
+{
+  G4ThreeVector localPoint = ftransform.TransformPoint( point );
+
+#ifdef G4VERBOSE
+  if(G4ErrorPropagatorData::verbose() >= 3 )
+  { 
+    G4cout << " G4ErrorCylSurfaceTarget::GetDistanceFromPoint:" << G4endl
+           << " Global point " << point << G4endl
+           << " Distance " << fradius - localPoint.perp() << G4endl;
+    Dump( " CylSurface: " );
+  }
+#endif
+
+  return fradius - localPoint.perp();
+}
+
+//---------------------------------------------------------------------
+
+G4ThreeVector G4ErrorCylSurfaceTarget::
+IntersectLocal( const G4ThreeVector& localPoint,
+                const G4ThreeVector& localDir ) const
+{
+  G4double eqa = localDir.x()*localDir.x()+localDir.y()*localDir.y();
+  G4double eqb = 2*(localPoint.x()*localDir.x()+localPoint.y()*localDir.y());
+  G4double eqc = -fradius*fradius+localPoint.x()*localPoint.x()
+                 +localPoint.y()*localPoint.y();
+  G4int inside = (localPoint.perp() > fradius) ? -1 : 1;
+  G4double lambda;
+
+  if( eqa*inside > 0. )
+  {
+    lambda = (-eqb + std::sqrt(eqb*eqb-4*eqa*eqc) ) / (2.*eqa);
+  }
+  else if( eqa*inside < 0. )
+  {
+    lambda = (-eqb - std::sqrt(eqb*eqb-4*eqa*eqc) ) / (2.*eqa);
+  }
+  else
+  {
+    if( eqb != 0. )
+    {
+      lambda = -eqc/eqb;
+    }
+    else
+    {
+      G4cerr << "WARNING - G4ErrorCylSurfaceTarget::IntersectLocal()" << G4endl
+             << "          Point: " << localPoint << ", direction: "
+             << localDir << G4endl;
+      Dump( " CylSurface: " ); 
+      G4Exception("G4ErrorCylSurfaceTarget::IntersectLocal()",
+                  "IllegalCondition",
+                  JustWarning, "Intersection not possible !");
+      lambda = kInfinity;
+    }
+  }
+
+  G4ThreeVector inters = localPoint + lambda*localDir/localDir.mag();
+
+#ifdef G4VERBOSE
+  if(G4ErrorPropagatorData::verbose() >= 4 ) { 
+    G4cout << " G4ErrorCylSurfaceTarget::IntersectLocal " << inters << " " << inters.perp() << " localPoint " << localPoint << " localDir " << localDir << G4endl;
+  } 
+#endif
+
+  return inters;
+}
+
+//---------------------------------------------------------------------
+
+G4Plane3D G4ErrorCylSurfaceTarget::
+GetTangentPlane( const G4ThreeVector& point ) const
+{
+  G4ThreeVector localPoint = ftransform.TransformPoint( point );
+
+  // check that point is at cylinder surface
+  //
+  if( std::fabs( localPoint.perp() - fradius )
+      > 1000.*G4GeometryTolerance::GetInstance()->GetSurfaceTolerance() )
+  {
+    G4cerr << "WARNING - G4ErrorCylSurfaceTarget::GetTangentPlane()" << G4endl
+           << "          Point: " << point << ", local: " << localPoint
+           << G4endl
+           << "          is not at surface, but far away by: "
+           << localPoint.perp() - fradius << " !" << G4endl;
+    G4Exception("G4ErrorCylSurfaceTarget::GetTangentPlane()",
+                "IllegalCondition", JustWarning,
+                "Local point not at surface !");
+  }
+
+  G4Normal3D normal = localPoint - ftransform.NetTranslation();
+
+  return G4Plane3D( normal, point );
+}
+
+
+//---------------------------------------------------------------------
+
+void G4ErrorCylSurfaceTarget::Dump( const G4String& msg ) const
+{
+  G4cout << msg << " radius " << fradius
+                << " centre " << ftransform.NetTranslation()
+                << " rotation " << ftransform.NetRotation() << G4endl;
+}