Gabriele Cosmo
86 lines
3.2 KiB
Plaintext
86 lines
3.2 KiB
Plaintext
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4AuxiliaryNavServices.icc,v 1.6 2002/07/23 08:50:34 gcosmo Exp $
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// GEANT4 tag $Name: geant4-05-00 $
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//
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//
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// class G4AuxiliaryNavServices Inline implementation
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//
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// ********************************************************************
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inline G4bool
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G4AuxiliaryNavServices::
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CheckPointOnSurface( const G4VSolid* sampleSolid,
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const G4ThreeVector& localPoint,
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const G4ThreeVector* globalDirection,
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const G4AffineTransform& sampleTransform,
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const G4bool locatedOnEdge)
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{
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G4ThreeVector localDirection, sampleNormal;
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G4bool enter = false;
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EInside insideSolid = sampleSolid->Inside(localPoint);
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if ( insideSolid!=kOutside )
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{
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G4bool checkDirection= locatedOnEdge && (globalDirection!=0);
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if( (insideSolid==kSurface) && checkDirection)
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{
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// We are probably located on an edge.
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//
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localDirection= sampleTransform.TransformAxis(*globalDirection);
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// Check whether we enter the volume
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//
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sampleNormal = sampleSolid->SurfaceNormal(localPoint);
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if ( sampleNormal.dot(localDirection) <= 0 )
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{
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if( sampleNormal.dot(localDirection) == 0 )
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{
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// We can't decide yet, let's make sure we're entering the solid.
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// If by a confusion we entered the next solid we find out now
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// whether to leave or to enter.
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// This happens when we're on the surface or edge shared by two
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// solids
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//
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G4double distanceToIn =
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sampleSolid->DistanceToIn( localPoint, localDirection );
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if( distanceToIn != kInfinity )
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{
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enter = true;
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}
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}
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else
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{
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enter = true;
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}
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}
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}
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else
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{
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enter = true;
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}
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}
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return enter;
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}
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