Gabriele Cosmo
456 lines
14 KiB
C++
456 lines
14 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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//
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// $Id: G4ReflectedSolid.cc 104317 2017-05-24 13:08:38Z gcosmo $
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//
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//
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// Implementation for G4ReflectedSolid class
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//
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// Author: Vladimir Grichine, 23.07.01 (Vladimir.Grichine@cern.ch)
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//
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// --------------------------------------------------------------------
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#include "G4ReflectedSolid.hh"
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#include <sstream>
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#include "G4Point3D.hh"
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#include "G4Vector3D.hh"
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#include "G4AffineTransform.hh"
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#include "G4Transform3D.hh"
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#include "G4VoxelLimits.hh"
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#include "G4VPVParameterisation.hh"
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#include "G4VGraphicsScene.hh"
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#include "G4Polyhedron.hh"
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/////////////////////////////////////////////////////////////////
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//
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// Constructor using HepTransform3D, in fact HepReflect3D
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G4ReflectedSolid::G4ReflectedSolid( const G4String& pName,
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G4VSolid* pSolid ,
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const G4Transform3D& transform )
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: G4VSolid(pName), fRebuildPolyhedron(false), fpPolyhedron(0)
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{
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fPtrSolid = pSolid;
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fDirectTransform3D = new G4Transform3D(transform);
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}
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///////////////////////////////////////////////////////////////////
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//
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G4ReflectedSolid::~G4ReflectedSolid()
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{
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delete fDirectTransform3D; fDirectTransform3D=0;
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delete fpPolyhedron; fpPolyhedron = 0;
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}
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///////////////////////////////////////////////////////////////////
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//
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G4ReflectedSolid::G4ReflectedSolid(const G4ReflectedSolid& rhs)
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: G4VSolid(rhs), fPtrSolid(rhs.fPtrSolid),
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fRebuildPolyhedron(false), fpPolyhedron(0)
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{
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fDirectTransform3D = new G4Transform3D(*rhs.fDirectTransform3D);
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}
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///////////////////////////////////////////////////////////////////
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//
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G4ReflectedSolid& G4ReflectedSolid::operator=(const G4ReflectedSolid& 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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G4VSolid::operator=(rhs);
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// Copy data
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//
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fPtrSolid= rhs.fPtrSolid;
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delete fDirectTransform3D;
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fDirectTransform3D= new G4Transform3D(*rhs.fDirectTransform3D);
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fRebuildPolyhedron = false;
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delete fpPolyhedron; fpPolyhedron= 0;
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return *this;
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}
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///////////////////////////////////////////////////////////////////
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//
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G4GeometryType G4ReflectedSolid::GetEntityType() const
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{
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return G4String("G4ReflectedSolid");
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}
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const G4ReflectedSolid* G4ReflectedSolid::GetReflectedSolidPtr() const
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{
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return this;
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}
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G4ReflectedSolid* G4ReflectedSolid::GetReflectedSolidPtr()
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{
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return this;
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}
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G4VSolid* G4ReflectedSolid::GetConstituentMovedSolid() const
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{
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return fPtrSolid;
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}
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/////////////////////////////////////////////////////////////////////////////
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//
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G4Transform3D G4ReflectedSolid::GetTransform3D() const
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{
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return fDirectTransform3D->inverse();
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}
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G4Transform3D G4ReflectedSolid::GetDirectTransform3D() const
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{
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G4Transform3D aTransform= *fDirectTransform3D;
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return aTransform;
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}
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void G4ReflectedSolid::SetDirectTransform3D(G4Transform3D& transform)
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{
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fDirectTransform3D = &transform;
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fRebuildPolyhedron = true;
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}
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//////////////////////////////////////////////////////////////////////////
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//
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// Get bounding box
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void G4ReflectedSolid::BoundingLimits(G4ThreeVector& pMin,
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G4ThreeVector& pMax) const
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{
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fPtrSolid->BoundingLimits(pMin,pMax);
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G4double xmin = pMin.x(), ymin = pMin.y(), zmin = pMin.z();
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G4double xmax = pMax.x(), ymax = pMax.y(), zmax = pMax.z();
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G4double xx = fDirectTransform3D->xx();
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G4double yy = fDirectTransform3D->yy();
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G4double zz = fDirectTransform3D->zz();
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if (std::abs(xx) == 1 && std::abs(yy) == 1 && std::abs(zz) == 1)
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{
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// Special case of reflection in axis and pure translation
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//
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if (xx == -1) { G4double tmp = -xmin; xmin = -xmax; xmax = tmp; }
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if (yy == -1) { G4double tmp = -ymin; ymin = -ymax; ymax = tmp; }
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if (zz == -1) { G4double tmp = -zmin; zmin = -zmax; zmax = tmp; }
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xmin += fDirectTransform3D->dx();
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xmax += fDirectTransform3D->dx();
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ymin += fDirectTransform3D->dy();
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ymax += fDirectTransform3D->dy();
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zmin += fDirectTransform3D->dz();
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zmax += fDirectTransform3D->dz();
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}
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else
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{
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// Use additional reflection in Z to set up affine transformation
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//
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G4Transform3D transform3D = G4ReflectZ3D()*(*fDirectTransform3D);
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G4AffineTransform transform(transform3D.getRotation().inverse(),
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transform3D.getTranslation());
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// Find bounding box
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//
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G4VoxelLimits unLimit;
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fPtrSolid->CalculateExtent(kXAxis,unLimit,transform,xmin,xmax);
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fPtrSolid->CalculateExtent(kYAxis,unLimit,transform,ymin,ymax);
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fPtrSolid->CalculateExtent(kZAxis,unLimit,transform,zmin,zmax);
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}
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pMin.set(xmin,ymin,-zmax);
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pMax.set(xmax,ymax,-zmin);
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// Check correctness of the bounding box
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//
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if (pMin.x() >= pMax.x() || pMin.y() >= pMax.y() || pMin.z() >= pMax.z())
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{
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std::ostringstream message;
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message << "Bad bounding box (min >= max) for solid: "
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<< GetName() << " !"
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<< "\npMin = " << pMin
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<< "\npMax = " << pMax;
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G4Exception("G4ReflectedSolid::BoundingLimits()", "GeomMgt0001",
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JustWarning, message);
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DumpInfo();
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}
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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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G4ReflectedSolid::CalculateExtent( const EAxis pAxis,
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const G4VoxelLimits& pVoxelLimits,
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const G4AffineTransform& pTransform,
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G4double& pMin,
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G4double& pMax ) const
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{
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// Separation of transformations. Calculation of the extent is done
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// in a reflection of the global space. In such way, the voxel is
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// reflected, but the solid is transformed just by G4AffineTransform.
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// It allows to use CalculateExtent() of the solid.
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// Reflect voxel limits in Z
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//
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G4VoxelLimits limits;
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limits.AddLimit(kXAxis, pVoxelLimits.GetMinXExtent(),
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pVoxelLimits.GetMaxXExtent());
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limits.AddLimit(kYAxis, pVoxelLimits.GetMinYExtent(),
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pVoxelLimits.GetMaxYExtent());
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limits.AddLimit(kZAxis,-pVoxelLimits.GetMaxZExtent(),
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-pVoxelLimits.GetMinZExtent());
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// Set affine transformation
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//
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G4Transform3D transform3D = G4ReflectZ3D()*pTransform*(*fDirectTransform3D);
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G4AffineTransform transform(transform3D.getRotation().inverse(),
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transform3D.getTranslation());
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// Find extent
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//
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if (!fPtrSolid->CalculateExtent(pAxis, limits, transform, pMin, pMax))
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{
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return false;
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}
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if (pAxis == kZAxis)
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{
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G4double tmp= -pMin; pMin= -pMax; pMax= tmp;
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}
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return true;
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}
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//////////////////////////////////////////////////////////////
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//
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//
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EInside G4ReflectedSolid::Inside(const G4ThreeVector& p ) const
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{
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G4ThreeVector newPoint = (*fDirectTransform3D)*G4Point3D(p);
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return fPtrSolid->Inside(newPoint);
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}
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//////////////////////////////////////////////////////////////
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//
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//
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G4ThreeVector
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G4ReflectedSolid::SurfaceNormal( const G4ThreeVector& p ) const
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{
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G4ThreeVector newPoint = (*fDirectTransform3D)*G4Point3D(p);
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G4Vector3D normal = fPtrSolid->SurfaceNormal(newPoint);
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return (*fDirectTransform3D)*normal;
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}
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/////////////////////////////////////////////////////////////
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//
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// The same algorithm as in DistanceToIn(p)
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G4double
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G4ReflectedSolid::DistanceToIn( const G4ThreeVector& p,
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const G4ThreeVector& v ) const
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{
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G4ThreeVector newPoint = (*fDirectTransform3D)*G4Point3D(p);
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G4ThreeVector newDirection = (*fDirectTransform3D)*G4Vector3D(v);
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return fPtrSolid->DistanceToIn(newPoint,newDirection);
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}
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////////////////////////////////////////////////////////
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//
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// Approximate nearest distance from the point p to the intersection of
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// two solids
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G4double
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G4ReflectedSolid::DistanceToIn( const G4ThreeVector& p ) const
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{
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G4ThreeVector newPoint = (*fDirectTransform3D)*G4Point3D(p);
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return fPtrSolid->DistanceToIn(newPoint);
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}
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//////////////////////////////////////////////////////////
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//
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// The same algorithm as DistanceToOut(p)
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G4double
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G4ReflectedSolid::DistanceToOut( const G4ThreeVector& p,
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const G4ThreeVector& v,
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const G4bool calcNorm,
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G4bool *validNorm,
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G4ThreeVector *n ) const
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{
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G4ThreeVector solNorm;
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G4ThreeVector newPoint = (*fDirectTransform3D)*G4Point3D(p);
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G4ThreeVector newDirection = (*fDirectTransform3D)*G4Vector3D(v);
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G4double dist = fPtrSolid->DistanceToOut(newPoint, newDirection,
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calcNorm, validNorm, &solNorm);
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if(calcNorm)
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{
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*n = (*fDirectTransform3D)*G4Vector3D(solNorm);
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}
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return dist;
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}
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//////////////////////////////////////////////////////////////
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//
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// Inverted algorithm of DistanceToIn(p)
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G4double
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G4ReflectedSolid::DistanceToOut( const G4ThreeVector& p ) const
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{
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G4ThreeVector newPoint = (*fDirectTransform3D)*G4Point3D(p);
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return fPtrSolid->DistanceToOut(newPoint);
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}
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//////////////////////////////////////////////////////////////
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//
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//
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void
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G4ReflectedSolid::ComputeDimensions( G4VPVParameterisation*,
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const G4int,
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const G4VPhysicalVolume* )
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{
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DumpInfo();
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G4Exception("G4ReflectedSolid::ComputeDimensions()",
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"GeomMgt0001", FatalException,
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"Method not applicable in this context!");
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}
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//////////////////////////////////////////////////////////////
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//
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// Return a point (G4ThreeVector) randomly and uniformly selected
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// on the solid surface
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G4ThreeVector G4ReflectedSolid::GetPointOnSurface() const
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{
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G4ThreeVector p = fPtrSolid->GetPointOnSurface();
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return (*fDirectTransform3D)*G4Point3D(p);
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}
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//////////////////////////////////////////////////////////////////////////
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//
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// Make a clone of this object
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G4VSolid* G4ReflectedSolid::Clone() const
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{
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return new G4ReflectedSolid(*this);
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}
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//////////////////////////////////////////////////////////////////////////
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//
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// Stream object contents to an output stream
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std::ostream& G4ReflectedSolid::StreamInfo(std::ostream& os) const
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{
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os << "-----------------------------------------------------------\n"
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<< " *** Dump for Reflected solid - " << GetName() << " ***\n"
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<< " ===================================================\n"
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<< " Solid type: " << GetEntityType() << "\n"
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<< " Parameters of constituent solid: \n"
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<< "===========================================================\n";
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fPtrSolid->StreamInfo(os);
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os << "===========================================================\n"
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<< " Transformations: \n"
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<< " Direct transformation - translation : \n"
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<< " " << fDirectTransform3D->getTranslation() << "\n"
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<< " - rotation : \n"
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<< " ";
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fDirectTransform3D->getRotation().print(os);
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os << "\n"
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<< "===========================================================\n";
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return os;
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}
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/////////////////////////////////////////////////
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//
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//
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void
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G4ReflectedSolid::DescribeYourselfTo ( G4VGraphicsScene& scene ) const
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{
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scene.AddSolid (*this);
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}
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////////////////////////////////////////////////////
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//
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//
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G4Polyhedron*
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G4ReflectedSolid::CreatePolyhedron () const
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{
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G4Polyhedron* polyhedron = fPtrSolid->CreatePolyhedron();
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if (polyhedron)
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{
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polyhedron->Transform(*fDirectTransform3D);
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return polyhedron;
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}
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else
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{
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std::ostringstream message;
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message << "Solid - " << GetName()
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<< " - original solid has no" << G4endl
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<< "corresponding polyhedron. Returning NULL!";
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G4Exception("G4ReflectedSolid::CreatePolyhedron()",
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"GeomMgt1001", JustWarning, message);
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return 0;
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}
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}
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/////////////////////////////////////////////////////////
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//
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//
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G4Polyhedron*
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G4ReflectedSolid::GetPolyhedron () const
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{
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if (!fpPolyhedron ||
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fRebuildPolyhedron ||
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fpPolyhedron->GetNumberOfRotationStepsAtTimeOfCreation() !=
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fpPolyhedron->GetNumberOfRotationSteps())
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{
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fpPolyhedron = CreatePolyhedron();
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fRebuildPolyhedron = false;
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}
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return fpPolyhedron;
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}
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