Gabriele Cosmo
226 lines
6.5 KiB
C++
226 lines
6.5 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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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. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// Implementation for G4UEllipticalTube wrapper class
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//
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// 13-08-2019 Gabriele Cosmo, CERN
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// --------------------------------------------------------------------
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#include "G4EllipticalTube.hh"
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#include "G4UEllipticalTube.hh"
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#if ( defined(G4GEOM_USE_USOLIDS) || defined(G4GEOM_USE_PARTIAL_USOLIDS) )
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#include "G4AffineTransform.hh"
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#include "G4VPVParameterisation.hh"
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#include "G4PhysicalConstants.hh"
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#include "G4BoundingEnvelope.hh"
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#include "G4Polyhedron.hh"
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////////////////////////////////////////////////////////////////////////
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//
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// Constructor - check & set half widths
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G4UEllipticalTube::G4UEllipticalTube(const G4String& pName,
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G4double dx,
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G4double dy,
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G4double dz )
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: Base_t(pName, dx, dy, dz)
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{ }
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//////////////////////////////////////////////////////////////////////////
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//
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// Destructor
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G4UEllipticalTube::~G4UEllipticalTube() = default;
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//////////////////////////////////////////////////////////////////////////
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//
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// Copy constructor
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G4UEllipticalTube::G4UEllipticalTube(const G4UEllipticalTube& rhs)
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: Base_t(rhs)
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{ }
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//////////////////////////////////////////////////////////////////////////
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//
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// Assignment operator
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G4UEllipticalTube& G4UEllipticalTube::operator = (const G4UEllipticalTube& rhs)
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{
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// Check assignment to self
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//
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if (this == &rhs) { return *this; }
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// Copy base class data
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//
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Base_t::operator=(rhs);
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return *this;
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}
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//////////////////////////////////////////////////////////////////////////
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//
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// Accessors
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G4double G4UEllipticalTube::GetDx() const
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{
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return Base_t::GetDx();
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}
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G4double G4UEllipticalTube::GetDy() const
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{
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return Base_t::GetDy();
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}
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G4double G4UEllipticalTube::GetDz() const
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{
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return Base_t::GetDz();
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}
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//////////////////////////////////////////////////////////////////////////
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//
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// Modifiers
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void G4UEllipticalTube::SetDx(G4double dx)
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{
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Base_t::SetDx(dx);
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}
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void G4UEllipticalTube::SetDy(G4double dy)
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{
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Base_t::SetDy(dy);
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}
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void G4UEllipticalTube::SetDz(G4double dz)
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{
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Base_t::SetDz(dz);
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}
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//////////////////////////////////////////////////////////////////////////
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//
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// Make a clone of the object
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G4VSolid* G4UEllipticalTube::Clone() const
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{
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return new G4UEllipticalTube(*this);
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}
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//////////////////////////////////////////////////////////////////////////
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//
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// Get bounding box
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void G4UEllipticalTube::BoundingLimits(G4ThreeVector& pMin,
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G4ThreeVector& pMax) const
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{
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G4double dx = GetDx();
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G4double dy = GetDy();
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G4double dz = GetDz();
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pMin.set(-dx,-dy,-dz);
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pMax.set( dx, dy, dz);
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}
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//////////////////////////////////////////////////////////////////////////
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//
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// Calculate extent under transform and specified limit
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G4bool
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G4UEllipticalTube::CalculateExtent(const EAxis pAxis,
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const G4VoxelLimits& pVoxelLimit,
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const G4AffineTransform& pTransform,
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G4double& pMin, G4double& pMax) const
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{
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G4ThreeVector bmin, bmax;
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G4bool exist;
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// Check bounding box (bbox)
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//
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BoundingLimits(bmin,bmax);
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G4BoundingEnvelope bbox(bmin,bmax);
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#ifdef G4BBOX_EXTENT
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return bbox.CalculateExtent(pAxis,pVoxelLimit, pTransform, pMin, pMax);
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#endif
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if (bbox.BoundingBoxVsVoxelLimits(pAxis, pVoxelLimit, pTransform, pMin, pMax))
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{
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return exist = pMin < pMax;
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}
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G4double dx = GetDx();
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G4double dy = GetDy();
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G4double dz = GetDz();
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// Set bounding envelope (benv) and calculate extent
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//
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const G4int NSTEPS = 24; // number of steps for whole circle
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G4double ang = twopi/NSTEPS;
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G4double sinHalf = std::sin(0.5*ang);
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G4double cosHalf = std::cos(0.5*ang);
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G4double sinStep = 2.*sinHalf*cosHalf;
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G4double cosStep = 1. - 2.*sinHalf*sinHalf;
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G4double sx = dx/cosHalf;
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G4double sy = dy/cosHalf;
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G4double sinCur = sinHalf;
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G4double cosCur = cosHalf;
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G4ThreeVectorList baseA(NSTEPS), baseB(NSTEPS);
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for (G4int k=0; k<NSTEPS; ++k)
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{
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baseA[k].set(sx*cosCur,sy*sinCur,-dz);
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baseB[k].set(sx*cosCur,sy*sinCur, dz);
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G4double sinTmp = sinCur;
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sinCur = sinCur*cosStep + cosCur*sinStep;
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cosCur = cosCur*cosStep - sinTmp*sinStep;
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}
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std::vector<const G4ThreeVectorList *> polygons(2);
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polygons[0] = &baseA;
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polygons[1] = &baseB;
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G4BoundingEnvelope benv(bmin, bmax, polygons);
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exist = benv.CalculateExtent(pAxis, pVoxelLimit, pTransform, pMin, pMax);
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return exist;
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}
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////////////////////////////////////////////////////////////////////////
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//
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// CreatePolyhedron
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//
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G4Polyhedron* G4UEllipticalTube::CreatePolyhedron() const
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{
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// create cylinder with radius=1...
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//
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G4Polyhedron* eTube = new G4PolyhedronTube(0., 1., GetDz());
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// apply non-uniform scaling...
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//
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eTube->Transform(G4Scale3D(GetDx(), GetDy(), 1.));
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return eTube;
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}
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#endif // G4GEOM_USE_USOLIDS
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