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geant4/source/geometry/solids/Boolean/src/G4SubtractionSolid.cc
T
Gabriele Cosmo d93e1e39a9 Import Geant4 7.1.0 source tree
2016-06-09 12:11:21 +02:00

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//
// ********************************************************************
// * DISCLAIMER *
// * *
// * The following disclaimer summarizes all the specific disclaimers *
// * of contributors to this software. The specific disclaimers,which *
// * govern, are listed with their locations in: *
// * http://cern.ch/geant4/license *
// * *
// * 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. *
// * *
// * This code implementation is the intellectual property of the *
// * GEANT4 collaboration. *
// * By copying, distributing or modifying the Program (or any work *
// * based on the Program) you indicate your acceptance of this *
// * statement, and all its terms. *
// ********************************************************************
//
//
// $Id: G4SubtractionSolid.cc,v 1.25 2005/05/09 13:44:58 gcosmo Exp $
// GEANT4 tag $Name: geant4-07-01 $
//
// Implementation of methods for the class G4IntersectionSolid
//
// History:
//
// 14.10.98 V.Grichine: implementation of the first version
// 19.10.98 V.Grichine: new algorithm of DistanceToIn(p,v)
// 02.08.99 V.Grichine: bugs fixed in DistanceToOut(p,v,...)
// while -> do-while & surfaceA limitations
// 13.09.00 V.Grichine: bug fixed in SurfaceNormal(p), p can be inside
//
// --------------------------------------------------------------------
#include "G4SubtractionSolid.hh"
#include "G4VoxelLimits.hh"
#include "G4VPVParameterisation.hh"
#include "G4VGraphicsScene.hh"
#include "G4Polyhedron.hh"
#include "G4NURBS.hh"
// #include "G4NURBSbox.hh"
///////////////////////////////////////////////////////////////////
//
// Transfer all data members to G4BooleanSolid which is responsible
// for them. pName will be in turn sent to G4VSolid
G4SubtractionSolid::G4SubtractionSolid( const G4String& pName,
G4VSolid* pSolidA ,
G4VSolid* pSolidB )
: G4BooleanSolid(pName,pSolidA,pSolidB)
{
}
///////////////////////////////////////////////////////////////
//
// Constructor
G4SubtractionSolid::G4SubtractionSolid( const G4String& pName,
G4VSolid* pSolidA ,
G4VSolid* pSolidB ,
G4RotationMatrix* rotMatrix,
const G4ThreeVector& transVector )
: G4BooleanSolid(pName,pSolidA,pSolidB,rotMatrix,transVector)
{
}
///////////////////////////////////////////////////////////////
//
// Constructor
G4SubtractionSolid::G4SubtractionSolid( const G4String& pName,
G4VSolid* pSolidA ,
G4VSolid* pSolidB ,
const G4Transform3D& transform )
: G4BooleanSolid(pName,pSolidA,pSolidB,transform)
{
}
///////////////////////////////////////////////////////////////
//
// Destructor
G4SubtractionSolid::~G4SubtractionSolid()
{
}
///////////////////////////////////////////////////////////////
//
// CalculateExtent
G4bool
G4SubtractionSolid::CalculateExtent( const EAxis pAxis,
const G4VoxelLimits& pVoxelLimit,
const G4AffineTransform& pTransform,
G4double& pMin,
G4double& pMax ) const
{
// Since we cannot be sure how much the second solid subtracts
// from the first, we must use the first solid's extent!
return fPtrSolidA->CalculateExtent( pAxis, pVoxelLimit,
pTransform, pMin, pMax );
}
/////////////////////////////////////////////////////
//
// Touching ? Empty subtraction ?
EInside G4SubtractionSolid::Inside( const G4ThreeVector& p ) const
{
EInside positionA = fPtrSolidA->Inside(p);
EInside positionB = fPtrSolidB->Inside(p);
if(positionA == kInside && positionB == kOutside)
{
return kInside ;
}
else
{
if(( positionA == kInside && positionB == kSurface) ||
( positionB == kOutside && positionA == kSurface) ||
( positionA == kSurface && positionB == kSurface &&
( fPtrSolidA->SurfaceNormal(p) -
fPtrSolidB->SurfaceNormal(p) ).mag2() >
1000*kRadTolerance ) ) return kSurface;
else return kOutside;
}
}
//////////////////////////////////////////////////////////////
//
// SurfaceNormal
G4ThreeVector
G4SubtractionSolid::SurfaceNormal( const G4ThreeVector& p ) const
{
G4ThreeVector normal;
if( Inside(p) == kOutside )
{
#ifdef G4BOOLDEBUG
G4cout << "WARNING - Invalid call [1] in "
<< "G4SubtractionSolid::SurfaceNormal(p)" << G4endl
<< " Point p is inside !" << G4endl;
G4cout << " p = " << p << G4endl;
G4cerr << "WARNING - Invalid call [1] in "
<< "G4SubtractionSolid::SurfaceNormal(p)" << G4endl
<< " Point p is inside !" << G4endl;
G4cerr << " p = " << p << G4endl;
#endif
}
else
{
if( fPtrSolidA->Inside(p) == kSurface &&
fPtrSolidB->Inside(p) != kInside )
{
normal = fPtrSolidA->SurfaceNormal(p) ;
}
else if( fPtrSolidA->Inside(p) == kInside &&
fPtrSolidB->Inside(p) != kOutside )
{
normal = -fPtrSolidB->SurfaceNormal(p) ;
}
else
{
if ( fPtrSolidA->DistanceToOut(p) <= fPtrSolidB->DistanceToIn(p) )
{
normal = fPtrSolidA->SurfaceNormal(p) ;
}
else
{
normal = -fPtrSolidB->SurfaceNormal(p) ;
}
#ifdef G4BOOLDEBUG
if(Inside(p) == kInside)
{
G4cout << "WARNING - Invalid call [2] in "
<< "G4SubtractionSolid::SurfaceNormal(p)" << G4endl
<< " Point p is inside !" << G4endl;
G4cout << " p = " << p << G4endl;
G4cerr << "WARNING - Invalid call [2] in "
<< "G4SubtractionSolid::SurfaceNormal(p)" << G4endl
<< " Point p is inside !" << G4endl;
G4cerr << " p = " << p << G4endl;
}
#endif
}
}
return normal;
}
/////////////////////////////////////////////////////////////
//
// The same algorithm as in DistanceToIn(p)
G4double
G4SubtractionSolid::DistanceToIn( const G4ThreeVector& p,
const G4ThreeVector& v ) const
{
G4double dist = 0.0,disTmp = 0.0 ;
#ifdef G4BOOLDEBUG
if( Inside(p) == kInside )
{
G4cout << "WARNING - Invalid call in "
<< "G4SubtractionSolid::DistanceToIn(p,v)" << G4endl
<< " Point p is inside !" << G4endl;
G4cout << " p = " << p << G4endl;
G4cout << " v = " << v << G4endl;
G4cerr << "WARNING - Invalid call in "
<< "G4SubtractionSolid::DistanceToIn(p,v)" << G4endl
<< " Point p is inside !" << G4endl;
G4cerr << " p = " << p << G4endl;
G4cerr << " v = " << v << G4endl;
}
#endif
// if( // ( fPtrSolidA->Inside(p) != kOutside) && // case1:p in both A&B
if ( fPtrSolidB->Inside(p) != kOutside ) // start: out of B
{
dist = fPtrSolidB->DistanceToOut(p,v) ; // ,calcNorm,validNorm,n) ;
if( fPtrSolidA->Inside(p+dist*v) != kInside )
{
do
{
disTmp = fPtrSolidA->DistanceToIn(p+dist*v,v) ;
if(disTmp == kInfinity)
{
return kInfinity ;
}
dist += disTmp ;
if( Inside(p+dist*v) == kOutside )
{
disTmp = fPtrSolidB->DistanceToOut(p+dist*v,v) ;
dist += disTmp ;
}
}
while( Inside(p+dist*v) == kOutside ) ;
}
}
else // p outside A, start in A
{
dist = fPtrSolidA->DistanceToIn(p,v) ;
if( dist == kInfinity ) // past A, hence past A\B
{
return kInfinity ;
}
else
{
while( Inside(p+dist*v) == kOutside ) // pushing loop
{
disTmp = fPtrSolidB->DistanceToOut(p+dist*v,v) ;
dist += disTmp ;
if( Inside(p+dist*v) == kOutside )
{
disTmp = fPtrSolidA->DistanceToIn(p+dist*v,v) ;
if(disTmp == kInfinity) // past A, hence past A\B
{
return kInfinity ;
}
dist += disTmp ;
}
}
}
}
return dist ;
}
////////////////////////////////////////////////////////
//
// Approximate nearest distance from the point p to the intersection of
// two solids. It is usually underestimated from the point of view of
// isotropic safety
G4double
G4SubtractionSolid::DistanceToIn( const G4ThreeVector& p ) const
{
G4double dist=0.0;
#ifdef G4BOOLDEBUG
if( Inside(p) == kInside )
{
G4cout << "WARNING - Invalid call in "
<< "G4SubtractionSolid::DistanceToIn(p)" << G4endl
<< " Point p is inside !" << G4endl;
G4cout << " p = " << p << G4endl;
G4cerr << "WARNING - Invalid call in "
<< "G4SubtractionSolid::DistanceToIn(p)" << G4endl
<< " Point p is inside !" << G4endl;
G4cerr << " p = " << p << G4endl;
}
#endif
if( ( fPtrSolidA->Inside(p) != kOutside) && // case 1
( fPtrSolidB->Inside(p) != kOutside) )
{
dist= fPtrSolidB->DistanceToOut(p) ;
}
else
{
dist= fPtrSolidA->DistanceToIn(p) ;
}
return dist;
}
//////////////////////////////////////////////////////////
//
// The same algorithm as DistanceToOut(p)
G4double
G4SubtractionSolid::DistanceToOut( const G4ThreeVector& p,
const G4ThreeVector& v,
const G4bool calcNorm,
G4bool *validNorm,
G4ThreeVector *n ) const
{
#ifdef G4BOOLDEBUG
if( Inside(p) == kOutside )
{
G4cout << "Position:" << G4endl << G4endl;
G4cout << "p.x() = " << p.x()/mm << " mm" << G4endl;
G4cout << "p.y() = " << p.y()/mm << " mm" << G4endl;
G4cout << "p.z() = " << p.z()/mm << " mm" << G4endl << G4endl;
G4cout << "Direction:" << G4endl << G4endl;
G4cout << "v.x() = " << v.x() << G4endl;
G4cout << "v.y() = " << v.y() << G4endl;
G4cout << "v.z() = " << v.z() << G4endl << G4endl;
G4cout << "WARNING - Invalid call in "
<< "G4SubtractionSolid::DistanceToOut(p,v)" << G4endl
<< " Point p is outside !" << G4endl;
G4cout << " p = " << p << G4endl;
G4cout << " v = " << v << G4endl;
G4cerr << "WARNING - Invalid call in "
<< "G4SubtractionSolid::DistanceToOut(p,v)" << G4endl
<< " Point p is outside !" << G4endl;
G4cerr << " p = " << p << G4endl;
G4cerr << " v = " << v << G4endl;
}
#endif
G4double distout;
G4double distA = fPtrSolidA->DistanceToOut(p,v,calcNorm,validNorm,n) ;
G4double distB = fPtrSolidB->DistanceToIn(p,v) ;
if(distB < distA)
{
if(calcNorm)
{
*n = -(fPtrSolidB->SurfaceNormal(p+distB*v)) ;
*validNorm = false ;
}
distout= distB ;
}
else
{
distout= distA ;
}
return distout;
}
//////////////////////////////////////////////////////////////
//
// Inverted algorithm of DistanceToIn(p)
G4double
G4SubtractionSolid::DistanceToOut( const G4ThreeVector& p ) const
{
G4double dist=0.0;
if( Inside(p) == kOutside )
{
#ifdef G4BOOLDEBUG
G4cout << "WARNING - Invalid call in "
<< "G4SubtractionSolid::DistanceToOut(p)" << G4endl
<< " Point p is outside" << G4endl;
G4cout << " p = " << p << G4endl;
G4cerr << "WARNING - Invalid call in "
<< "G4SubtractionSolid::DistanceToOut(p)" << G4endl
<< " Point p is outside" << G4endl;
G4cerr << " p = " << p << G4endl;
#endif
}
else
{
dist= std::min(fPtrSolidA->DistanceToOut(p),
fPtrSolidB->DistanceToIn(p) ) ;
}
return dist;
}
//////////////////////////////////////////////////////////////
//
//
G4GeometryType G4SubtractionSolid::GetEntityType() const
{
return G4String("G4SubtractionSolid");
}
//////////////////////////////////////////////////////////////
//
//
void
G4SubtractionSolid::ComputeDimensions( G4VPVParameterisation*,
const G4int,
const G4VPhysicalVolume* )
{
}
/////////////////////////////////////////////////
//
//
void
G4SubtractionSolid::DescribeYourselfTo ( G4VGraphicsScene& scene ) const
{
scene.AddSolid (*this);
}
////////////////////////////////////////////////////
//
//
G4Polyhedron*
G4SubtractionSolid::CreatePolyhedron () const
{
G4Polyhedron* pA = fPtrSolidA->GetPolyhedron();
G4Polyhedron* pB = fPtrSolidB->GetPolyhedron();
G4Polyhedron* resultant = new G4Polyhedron (pA->subtract(*pB));
return resultant;
}
/////////////////////////////////////////////////////////
//
//
G4NURBS*
G4SubtractionSolid::CreateNURBS () const
{
// Take into account boolean operation - see CreatePolyhedron.
// return new G4NURBSbox (1.0, 1.0, 1.0);
return 0;
}
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