Gabriele Cosmo
1243 lines
35 KiB
C++
1243 lines
35 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: G4Polycone.cc,v 1.43 2008/05/15 13:45:15 gcosmo Exp $
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// GEANT4 tag $Name: geant4-09-02 $
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//
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//
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// --------------------------------------------------------------------
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// GEANT 4 class source file
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//
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//
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// G4Polycone.cc
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//
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// Implementation of a CSG polycone
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//
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// --------------------------------------------------------------------
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#include "G4Polycone.hh"
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#include "G4PolyconeSide.hh"
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#include "G4PolyPhiFace.hh"
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#include "Randomize.hh"
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#include "G4Polyhedron.hh"
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#include "G4EnclosingCylinder.hh"
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#include "G4ReduciblePolygon.hh"
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#include "G4VPVParameterisation.hh"
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using namespace CLHEP;
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//
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// Constructor (GEANT3 style parameters)
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//
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G4Polycone::G4Polycone( const G4String& name,
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G4double phiStart,
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G4double phiTotal,
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G4int numZPlanes,
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const G4double zPlane[],
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const G4double rInner[],
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const G4double rOuter[] )
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: G4VCSGfaceted( name ), genericPcon(false)
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{
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//
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// Some historical ugliness
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//
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original_parameters = new G4PolyconeHistorical();
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original_parameters->Start_angle = phiStart;
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original_parameters->Opening_angle = phiTotal;
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original_parameters->Num_z_planes = numZPlanes;
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original_parameters->Z_values = new G4double[numZPlanes];
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original_parameters->Rmin = new G4double[numZPlanes];
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original_parameters->Rmax = new G4double[numZPlanes];
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G4int i;
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for (i=0; i<numZPlanes; i++)
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{
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if (( i < numZPlanes-1) && ( zPlane[i] == zPlane[i+1] ))
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{
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if( (rInner[i] > rOuter[i+1])
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||(rInner[i+1] > rOuter[i]) )
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{
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DumpInfo();
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G4cerr << "ERROR - G4Polycone::G4Polycone()"
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<< G4endl
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<< " Segments are not contiguous !" << G4endl
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<< " rMin[" << i << "] = " << rInner[i]
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<< " -- rMax[" << i+1 << "] = " << rOuter[i+1] << G4endl
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<< " rMin[" << i+1 << "] = " << rInner[i+1]
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<< " -- rMax[" << i << "] = " << rOuter[i] << G4endl;
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G4Exception("G4Polycone::G4Polycone()", "InvalidSetup", FatalException,
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"Cannot create a Polycone with no contiguous segments.");
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}
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}
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original_parameters->Z_values[i] = zPlane[i];
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original_parameters->Rmin[i] = rInner[i];
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original_parameters->Rmax[i] = rOuter[i];
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}
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//
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// Build RZ polygon using special PCON/PGON GEANT3 constructor
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//
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G4ReduciblePolygon *rz =
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new G4ReduciblePolygon( rInner, rOuter, zPlane, numZPlanes );
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//
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// Do the real work
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//
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Create( phiStart, phiTotal, rz );
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delete rz;
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}
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//
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// Constructor (generic parameters)
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//
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G4Polycone::G4Polycone( const G4String& name,
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G4double phiStart,
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G4double phiTotal,
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G4int numRZ,
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const G4double r[],
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const G4double z[] )
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: G4VCSGfaceted( name ), genericPcon(true)
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{
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G4ReduciblePolygon *rz = new G4ReduciblePolygon( r, z, numRZ );
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Create( phiStart, phiTotal, rz );
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// Set original_parameters struct for consistency
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//
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SetOriginalParameters();
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delete rz;
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}
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//
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// Create
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//
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// Generic create routine, called by each constructor after
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// conversion of arguments
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//
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void G4Polycone::Create( G4double phiStart,
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G4double phiTotal,
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G4ReduciblePolygon *rz )
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{
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//
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// Perform checks of rz values
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//
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if (rz->Amin() < 0.0)
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{
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G4cerr << "ERROR - G4Polycone::Create(): " << GetName() << G4endl
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<< " All R values must be >= 0 !"
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<< G4endl;
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G4Exception("G4Polycone::Create()", "InvalidSetup", FatalException,
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"Illegal input parameters.");
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}
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G4double rzArea = rz->Area();
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if (rzArea < -kCarTolerance)
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rz->ReverseOrder();
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else if (rzArea < -kCarTolerance)
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{
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G4cerr << "ERROR - G4Polycone::Create(): " << GetName() << G4endl
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<< " R/Z cross section is zero or near zero: "
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<< rzArea << G4endl;
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G4Exception("G4Polycone::Create()", "InvalidSetup", FatalException,
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"Illegal input parameters.");
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}
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if ( (!rz->RemoveDuplicateVertices( kCarTolerance ))
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|| (!rz->RemoveRedundantVertices( kCarTolerance )) )
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{
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G4cerr << "ERROR - G4Polycone::Create(): " << GetName() << G4endl
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<< " Too few unique R/Z values !"
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<< G4endl;
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G4Exception("G4Polycone::Create()", "InvalidSetup", FatalException,
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"Illegal input parameters.");
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}
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if (rz->CrossesItself(1/kInfinity))
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{
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G4cerr << "ERROR - G4Polycone::Create(): " << GetName() << G4endl
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<< " R/Z segments cross !"
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<< G4endl;
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G4Exception("G4Polycone::Create()", "InvalidSetup", FatalException,
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"Illegal input parameters.");
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}
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numCorner = rz->NumVertices();
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//
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// Phi opening? Account for some possible roundoff, and interpret
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// nonsense value as representing no phi opening
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//
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if (phiTotal <= 0 || phiTotal > twopi-1E-10)
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{
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phiIsOpen = false;
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startPhi = 0;
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endPhi = twopi;
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}
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else
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{
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phiIsOpen = true;
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//
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// Convert phi into our convention
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//
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startPhi = phiStart;
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while( startPhi < 0 ) startPhi += twopi;
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endPhi = phiStart+phiTotal;
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while( endPhi < startPhi ) endPhi += twopi;
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}
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//
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// Allocate corner array.
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//
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corners = new G4PolyconeSideRZ[numCorner];
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//
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// Copy corners
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//
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G4ReduciblePolygonIterator iterRZ(rz);
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G4PolyconeSideRZ *next = corners;
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iterRZ.Begin();
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do
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{
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next->r = iterRZ.GetA();
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next->z = iterRZ.GetB();
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} while( ++next, iterRZ.Next() );
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//
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// Allocate face pointer array
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//
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numFace = phiIsOpen ? numCorner+2 : numCorner;
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faces = new G4VCSGface*[numFace];
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//
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// Construct conical faces
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//
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// But! Don't construct a face if both points are at zero radius!
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//
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G4PolyconeSideRZ *corner = corners,
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*prev = corners + numCorner-1,
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*nextNext;
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G4VCSGface **face = faces;
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do
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{
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next = corner+1;
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if (next >= corners+numCorner) next = corners;
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nextNext = next+1;
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if (nextNext >= corners+numCorner) nextNext = corners;
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if (corner->r < 1/kInfinity && next->r < 1/kInfinity) continue;
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//
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// We must decide here if we can dare declare one of our faces
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// as having a "valid" normal (i.e. allBehind = true). This
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// is never possible if the face faces "inward" in r.
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//
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G4bool allBehind;
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if (corner->z > next->z)
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{
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allBehind = false;
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}
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else
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{
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//
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// Otherwise, it is only true if the line passing
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// through the two points of the segment do not
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// split the r/z cross section
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//
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allBehind = !rz->BisectedBy( corner->r, corner->z,
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next->r, next->z, kCarTolerance );
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}
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*face++ = new G4PolyconeSide( prev, corner, next, nextNext,
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startPhi, endPhi-startPhi, phiIsOpen, allBehind );
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} while( prev=corner, corner=next, corner > corners );
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if (phiIsOpen)
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{
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//
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// Construct phi open edges
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//
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*face++ = new G4PolyPhiFace( rz, startPhi, 0, endPhi );
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*face++ = new G4PolyPhiFace( rz, endPhi, 0, startPhi );
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}
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//
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// We might have dropped a face or two: recalculate numFace
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//
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numFace = face-faces;
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//
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// Make enclosingCylinder
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//
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enclosingCylinder =
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new G4EnclosingCylinder( rz, phiIsOpen, phiStart, phiTotal );
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}
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//
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// Fake default constructor - sets only member data and allocates memory
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// for usage restricted to object persistency.
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//
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G4Polycone::G4Polycone( __void__& a )
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: G4VCSGfaceted(a), genericPcon(false), corners(0),
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original_parameters(0), enclosingCylinder(0)
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{
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}
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//
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// Destructor
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//
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G4Polycone::~G4Polycone()
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{
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delete [] corners;
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if (original_parameters) delete original_parameters;
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if (enclosingCylinder) delete enclosingCylinder;
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}
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//
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// Copy constructor
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//
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G4Polycone::G4Polycone( const G4Polycone &source )
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: G4VCSGfaceted( source )
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{
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CopyStuff( source );
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}
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//
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// Assignment operator
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//
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const G4Polycone &G4Polycone::operator=( const G4Polycone &source )
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{
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if (this == &source) return *this;
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G4VCSGfaceted::operator=( source );
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delete [] corners;
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if (original_parameters) delete original_parameters;
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delete enclosingCylinder;
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CopyStuff( source );
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return *this;
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}
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//
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// CopyStuff
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//
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void G4Polycone::CopyStuff( const G4Polycone &source )
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{
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//
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// Simple stuff
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//
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startPhi = source.startPhi;
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endPhi = source.endPhi;
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phiIsOpen = source.phiIsOpen;
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numCorner = source.numCorner;
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genericPcon= source.genericPcon;
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//
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// The corner array
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//
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corners = new G4PolyconeSideRZ[numCorner];
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G4PolyconeSideRZ *corn = corners,
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*sourceCorn = source.corners;
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do
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{
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*corn = *sourceCorn;
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} while( ++sourceCorn, ++corn < corners+numCorner );
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//
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// Original parameters
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//
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if (source.original_parameters)
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{
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original_parameters =
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new G4PolyconeHistorical( *source.original_parameters );
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}
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//
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// Enclosing cylinder
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//
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enclosingCylinder = new G4EnclosingCylinder( *source.enclosingCylinder );
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}
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//
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// Reset
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//
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G4bool G4Polycone::Reset()
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{
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if (genericPcon)
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{
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G4cerr << "Solid " << GetName() << " built using generic construct."
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<< G4endl << "Not applicable to the generic construct !" << G4endl;
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G4Exception("G4Polycone::Reset()", "NotApplicableConstruct",
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JustWarning, "Parameters NOT resetted.");
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return 1;
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}
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//
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// Clear old setup
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//
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G4VCSGfaceted::DeleteStuff();
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delete [] corners;
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delete enclosingCylinder;
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//
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// Rebuild polycone
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//
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G4ReduciblePolygon *rz =
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new G4ReduciblePolygon( original_parameters->Rmin,
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original_parameters->Rmax,
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original_parameters->Z_values,
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original_parameters->Num_z_planes );
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Create( original_parameters->Start_angle,
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original_parameters->Opening_angle, rz );
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delete rz;
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return 0;
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}
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//
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// Inside
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//
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// This is an override of G4VCSGfaceted::Inside, created in order
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// to speed things up by first checking with G4EnclosingCylinder.
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//
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EInside G4Polycone::Inside( const G4ThreeVector &p ) const
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{
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//
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// Quick test
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//
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if (enclosingCylinder->MustBeOutside(p)) return kOutside;
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//
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// Long answer
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//
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return G4VCSGfaceted::Inside(p);
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}
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//
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// DistanceToIn
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//
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// This is an override of G4VCSGfaceted::Inside, created in order
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// to speed things up by first checking with G4EnclosingCylinder.
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//
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G4double G4Polycone::DistanceToIn( const G4ThreeVector &p,
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const G4ThreeVector &v ) const
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{
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//
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// Quick test
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//
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if (enclosingCylinder->ShouldMiss(p,v))
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return kInfinity;
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//
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// Long answer
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//
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return G4VCSGfaceted::DistanceToIn( p, v );
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}
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//
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// DistanceToIn
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//
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G4double G4Polycone::DistanceToIn( const G4ThreeVector &p ) const
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{
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return G4VCSGfaceted::DistanceToIn(p);
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}
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//
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// ComputeDimensions
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//
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void G4Polycone::ComputeDimensions( G4VPVParameterisation* p,
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const G4int n,
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const G4VPhysicalVolume* pRep )
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{
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p->ComputeDimensions(*this,n,pRep);
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}
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//
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// GetEntityType
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//
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G4GeometryType G4Polycone::GetEntityType() const
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{
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return G4String("G4Polycone");
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}
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//
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// Stream object contents to an output stream
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//
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std::ostream& G4Polycone::StreamInfo( std::ostream& os ) const
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{
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os << "-----------------------------------------------------------\n"
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<< " *** Dump for solid - " << GetName() << " ***\n"
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<< " ===================================================\n"
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<< " Solid type: G4Polycone\n"
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<< " Parameters: \n"
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<< " starting phi angle : " << startPhi/degree << " degrees \n"
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<< " ending phi angle : " << endPhi/degree << " degrees \n";
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G4int i=0;
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if (!genericPcon)
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{
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G4int numPlanes = original_parameters->Num_z_planes;
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os << " number of Z planes: " << numPlanes << "\n"
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<< " Z values: \n";
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for (i=0; i<numPlanes; i++)
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{
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os << " Z plane " << i << ": "
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<< original_parameters->Z_values[i] << "\n";
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}
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os << " Tangent distances to inner surface (Rmin): \n";
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for (i=0; i<numPlanes; i++)
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{
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os << " Z plane " << i << ": "
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<< original_parameters->Rmin[i] << "\n";
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}
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os << " Tangent distances to outer surface (Rmax): \n";
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for (i=0; i<numPlanes; i++)
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{
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os << " Z plane " << i << ": "
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<< original_parameters->Rmax[i] << "\n";
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}
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}
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os << " number of RZ points: " << numCorner << "\n"
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<< " RZ values (corners): \n";
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for (i=0; i<numCorner; i++)
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{
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os << " "
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<< corners[i].r << ", " << corners[i].z << "\n";
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}
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os << "-----------------------------------------------------------\n";
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return os;
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}
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//
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// GetPointOnCone
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//
|
|
// Auxiliary method for Get Point On Surface
|
|
//
|
|
G4ThreeVector G4Polycone::GetPointOnCone(G4double fRmin1, G4double fRmax1,
|
|
G4double fRmin2, G4double fRmax2,
|
|
G4double zOne, G4double zTwo,
|
|
G4double& totArea) const
|
|
{
|
|
// declare working variables
|
|
//
|
|
G4double Aone, Atwo, Afive, phi, zRand, fDPhi, fSPhi, cosu, sinu;
|
|
G4double rRand1, chose, rone, rtwo, qone, qtwo,
|
|
fDz = std::fabs((zTwo-zOne)/2.);
|
|
G4ThreeVector point, offset;
|
|
offset = G4ThreeVector(0.,0.,0.5*(zTwo+zOne));
|
|
fSPhi = startPhi; fDPhi = endPhi - startPhi;
|
|
rone = (fRmax1-fRmax2)/(2.*fDz);
|
|
rtwo = (fRmin1-fRmin2)/(2.*fDz);
|
|
if(fRmax1==fRmax2){qone=0.;}
|
|
else{
|
|
qone = fDz*(fRmax1+fRmax2)/(fRmax1-fRmax2);
|
|
}
|
|
if(fRmin1==fRmin2){qtwo=0.;}
|
|
else{
|
|
qtwo = fDz*(fRmin1+fRmin2)/(fRmin1-fRmin2);
|
|
}
|
|
Aone = 0.5*fDPhi*(fRmax2 + fRmax1)*(sqr(fRmin1-fRmin2)+sqr(zTwo-zOne));
|
|
Atwo = 0.5*fDPhi*(fRmin2 + fRmin1)*(sqr(fRmax1-fRmax2)+sqr(zTwo-zOne));
|
|
Afive = fDz*(fRmax1-fRmin1+fRmax2-fRmin2);
|
|
totArea = Aone+Atwo+2.*Afive;
|
|
|
|
phi = RandFlat::shoot(startPhi,endPhi);
|
|
cosu = std::cos(phi);
|
|
sinu = std::sin(phi);
|
|
|
|
|
|
if( (startPhi == 0) && (endPhi == twopi) ) { Afive = 0; }
|
|
chose = RandFlat::shoot(0.,Aone+Atwo+2.*Afive);
|
|
if( (chose >= 0) && (chose < Aone) )
|
|
{
|
|
if(fRmax1 != fRmax2)
|
|
{
|
|
zRand = RandFlat::shoot(-1.*fDz,fDz);
|
|
point = G4ThreeVector (rone*cosu*(qone-zRand),
|
|
rone*sinu*(qone-zRand), zRand);
|
|
|
|
|
|
}
|
|
else
|
|
{
|
|
point = G4ThreeVector(fRmax1*cosu, fRmax1*sinu,
|
|
RandFlat::shoot(-1.*fDz,fDz));
|
|
|
|
}
|
|
}
|
|
else if(chose >= Aone && chose < Aone + Atwo)
|
|
{
|
|
if(fRmin1 != fRmin2)
|
|
{
|
|
zRand = RandFlat::shoot(-1.*fDz,fDz);
|
|
point = G4ThreeVector (rtwo*cosu*(qtwo-zRand),
|
|
rtwo*sinu*(qtwo-zRand), zRand);
|
|
|
|
}
|
|
else
|
|
{
|
|
point = G4ThreeVector(fRmin1*cosu, fRmin1*sinu,
|
|
RandFlat::shoot(-1.*fDz,fDz));
|
|
|
|
}
|
|
}
|
|
else if( (chose >= Aone + Atwo + Afive) && (chose < Aone + Atwo + 2.*Afive) )
|
|
{
|
|
zRand = RandFlat::shoot(-1.*fDz,fDz);
|
|
rRand1 = RandFlat::shoot(fRmin2-((zRand-fDz)/(2.*fDz))*(fRmin1-fRmin2),
|
|
fRmax2-((zRand-fDz)/(2.*fDz))*(fRmax1-fRmax2));
|
|
point = G4ThreeVector (rRand1*std::cos(startPhi),
|
|
rRand1*std::sin(startPhi), zRand);
|
|
}
|
|
else
|
|
{
|
|
zRand = RandFlat::shoot(-1.*fDz,fDz);
|
|
rRand1 = RandFlat::shoot(fRmin2-((zRand-fDz)/(2.*fDz))*(fRmin1-fRmin2),
|
|
fRmax2-((zRand-fDz)/(2.*fDz))*(fRmax1-fRmax2));
|
|
point = G4ThreeVector (rRand1*std::cos(endPhi),
|
|
rRand1*std::sin(endPhi), zRand);
|
|
|
|
}
|
|
return point+offset;
|
|
}
|
|
|
|
|
|
//
|
|
// GetPointOnTubs
|
|
//
|
|
// Auxiliary method for GetPoint On Surface
|
|
//
|
|
G4ThreeVector G4Polycone::GetPointOnTubs(G4double fRMin, G4double fRMax,
|
|
G4double zOne, G4double zTwo,
|
|
G4double& totArea) const
|
|
{
|
|
G4double xRand,yRand,zRand,phi,cosphi,sinphi,chose,
|
|
aOne,aTwo,aFou,rRand,fDz,fSPhi,fDPhi;
|
|
fDz = std::fabs(0.5*(zTwo-zOne));
|
|
fSPhi = startPhi;
|
|
fDPhi = endPhi-startPhi;
|
|
|
|
aOne = 2.*fDz*fDPhi*fRMax;
|
|
aTwo = 2.*fDz*fDPhi*fRMin;
|
|
aFou = 2.*fDz*(fRMax-fRMin);
|
|
totArea = aOne+aTwo+2.*aFou;
|
|
phi = RandFlat::shoot(startPhi,endPhi);
|
|
cosphi = std::cos(phi);
|
|
sinphi = std::sin(phi);
|
|
rRand = RandFlat::shoot(fRMin,fRMax);
|
|
|
|
if(startPhi == 0 && endPhi == twopi)
|
|
aFou = 0;
|
|
|
|
chose = RandFlat::shoot(0.,aOne+aTwo+2.*aFou);
|
|
if( (chose >= 0) && (chose < aOne) )
|
|
{
|
|
xRand = fRMax*cosphi;
|
|
yRand = fRMax*sinphi;
|
|
zRand = RandFlat::shoot(-1.*fDz,fDz);
|
|
return G4ThreeVector(xRand, yRand, zRand+0.5*(zTwo+zOne));
|
|
}
|
|
else if( (chose >= aOne) && (chose < aOne + aTwo) )
|
|
{
|
|
xRand = fRMin*cosphi;
|
|
yRand = fRMin*sinphi;
|
|
zRand = RandFlat::shoot(-1.*fDz,fDz);
|
|
return G4ThreeVector(xRand, yRand, zRand+0.5*(zTwo+zOne));
|
|
}
|
|
else if( (chose >= aOne+aTwo) && (chose <aOne+aTwo+aFou) )
|
|
{
|
|
xRand = rRand*std::cos(fSPhi+fDPhi);
|
|
yRand = rRand*std::sin(fSPhi+fDPhi);
|
|
zRand = RandFlat::shoot(-1.*fDz,fDz);
|
|
return G4ThreeVector(xRand, yRand, zRand+0.5*(zTwo+zOne));
|
|
}
|
|
|
|
// else
|
|
|
|
xRand = rRand*std::cos(fSPhi+fDPhi);
|
|
yRand = rRand*std::sin(fSPhi+fDPhi);
|
|
zRand = RandFlat::shoot(-1.*fDz,fDz);
|
|
return G4ThreeVector(xRand, yRand, zRand+0.5*(zTwo+zOne));
|
|
}
|
|
|
|
|
|
//
|
|
// GetPointOnRing
|
|
//
|
|
// Auxiliary method for GetPoint On Surface
|
|
//
|
|
G4ThreeVector G4Polycone::GetPointOnRing(G4double fRMin1, G4double fRMax1,
|
|
G4double fRMin2,G4double fRMax2,
|
|
G4double zOne) const
|
|
{
|
|
G4double xRand,yRand,phi,cosphi,sinphi,rRand1,rRand2,A1,Atot,rCh;
|
|
|
|
phi = RandFlat::shoot(startPhi,endPhi);
|
|
cosphi = std::cos(phi);
|
|
sinphi = std::sin(phi);
|
|
|
|
if(fRMin1==fRMin2)
|
|
{
|
|
rRand1 = fRMin1; A1=0.;
|
|
}
|
|
else
|
|
{
|
|
rRand1 = RandFlat::shoot(fRMin1,fRMin2);
|
|
A1=std::abs(fRMin2*fRMin2-fRMin1*fRMin1);
|
|
}
|
|
if(fRMax1==fRMax2)
|
|
{
|
|
rRand2=fRMax1; Atot=A1;
|
|
}
|
|
else
|
|
{
|
|
rRand2 = RandFlat::shoot(fRMax1,fRMax2);
|
|
Atot = A1+std::abs(fRMax2*fRMax2-fRMax1*fRMax1);
|
|
}
|
|
rCh = RandFlat::shoot(0.,Atot);
|
|
|
|
if(rCh>A1) { rRand1=rRand2; }
|
|
|
|
xRand = rRand1*cosphi;
|
|
yRand = rRand1*sinphi;
|
|
|
|
return G4ThreeVector(xRand, yRand, zOne);
|
|
}
|
|
|
|
|
|
//
|
|
// GetPointOnCut
|
|
//
|
|
// Auxiliary method for Get Point On Surface
|
|
//
|
|
G4ThreeVector G4Polycone::GetPointOnCut(G4double fRMin1, G4double fRMax1,
|
|
G4double fRMin2, G4double fRMax2,
|
|
G4double zOne, G4double zTwo,
|
|
G4double& totArea) const
|
|
{ if(zOne==zTwo)
|
|
{
|
|
return GetPointOnRing(fRMin1, fRMax1,fRMin2,fRMax2,zOne);
|
|
}
|
|
if( (fRMin1 == fRMin2) && (fRMax1 == fRMax2) )
|
|
{
|
|
return GetPointOnTubs(fRMin1, fRMax1,zOne,zTwo,totArea);
|
|
}
|
|
return GetPointOnCone(fRMin1,fRMax1,fRMin2,fRMax2,zOne,zTwo,totArea);
|
|
}
|
|
|
|
|
|
//
|
|
// GetPointOnSurface
|
|
//
|
|
G4ThreeVector G4Polycone::GetPointOnSurface() const
|
|
{
|
|
if (!genericPcon) // Polycone by faces
|
|
{
|
|
G4double Area=0,totArea=0,Achose1=0,Achose2=0,phi,cosphi,sinphi,rRand;
|
|
G4int i=0;
|
|
G4int numPlanes = original_parameters->Num_z_planes;
|
|
|
|
phi = RandFlat::shoot(startPhi,endPhi);
|
|
cosphi = std::cos(phi);
|
|
sinphi = std::sin(phi);
|
|
|
|
rRand = RandFlat::shoot(original_parameters->Rmin[0],
|
|
original_parameters->Rmax[0]);
|
|
|
|
std::vector<G4double> areas; // (numPlanes+1);
|
|
std::vector<G4ThreeVector> points; // (numPlanes-1);
|
|
|
|
areas.push_back(pi*(sqr(original_parameters->Rmax[0])
|
|
-sqr(original_parameters->Rmin[0])));
|
|
|
|
for(i=0; i<numPlanes-1; i++)
|
|
{
|
|
Area = (original_parameters->Rmin[i]+original_parameters->Rmin[i+1])
|
|
* std::sqrt(sqr(original_parameters->Rmin[i]
|
|
-original_parameters->Rmin[i+1])+
|
|
sqr(original_parameters->Z_values[i+1]
|
|
-original_parameters->Z_values[i]));
|
|
|
|
Area += (original_parameters->Rmax[i]+original_parameters->Rmax[i+1])
|
|
* std::sqrt(sqr(original_parameters->Rmax[i]
|
|
-original_parameters->Rmax[i+1])+
|
|
sqr(original_parameters->Z_values[i+1]
|
|
-original_parameters->Z_values[i]));
|
|
|
|
Area *= 0.5*(endPhi-startPhi);
|
|
|
|
if(startPhi==0.&& endPhi == twopi)
|
|
{
|
|
Area += std::fabs(original_parameters->Z_values[i+1]
|
|
-original_parameters->Z_values[i])*
|
|
(original_parameters->Rmax[i]
|
|
+original_parameters->Rmax[i+1]
|
|
-original_parameters->Rmin[i]
|
|
-original_parameters->Rmin[i+1]);
|
|
}
|
|
areas.push_back(Area);
|
|
totArea += Area;
|
|
}
|
|
|
|
areas.push_back(pi*(sqr(original_parameters->Rmax[numPlanes-1])-
|
|
sqr(original_parameters->Rmin[numPlanes-1])));
|
|
|
|
totArea += (areas[0]+areas[numPlanes]);
|
|
G4double chose = RandFlat::shoot(0.,totArea);
|
|
|
|
if( (chose>=0.) && (chose<areas[0]) )
|
|
{
|
|
return G4ThreeVector(rRand*cosphi, rRand*sinphi,
|
|
original_parameters->Z_values[0]);
|
|
}
|
|
|
|
for (i=0; i<numPlanes-1; i++)
|
|
{
|
|
Achose1 += areas[i];
|
|
Achose2 = (Achose1+areas[i+1]);
|
|
if(chose>=Achose1 && chose<Achose2)
|
|
{
|
|
return GetPointOnCut(original_parameters->Rmin[i],
|
|
original_parameters->Rmax[i],
|
|
original_parameters->Rmin[i+1],
|
|
original_parameters->Rmax[i+1],
|
|
original_parameters->Z_values[i],
|
|
original_parameters->Z_values[i+1], Area);
|
|
}
|
|
}
|
|
|
|
rRand = RandFlat::shoot(original_parameters->Rmin[numPlanes-1],
|
|
original_parameters->Rmax[numPlanes-1]);
|
|
|
|
return G4ThreeVector(rRand*cosphi,rRand*sinphi,
|
|
original_parameters->Z_values[numPlanes-1]);
|
|
|
|
}
|
|
else // Generic Polycone
|
|
{
|
|
return GetPointOnSurfaceGeneric();
|
|
}
|
|
}
|
|
|
|
//
|
|
// CreatePolyhedron
|
|
//
|
|
G4Polyhedron* G4Polycone::CreatePolyhedron() const
|
|
{
|
|
//
|
|
// This has to be fixed in visualization. Fake it for the moment.
|
|
//
|
|
if (!genericPcon)
|
|
{
|
|
return new G4PolyhedronPcon( original_parameters->Start_angle,
|
|
original_parameters->Opening_angle,
|
|
original_parameters->Num_z_planes,
|
|
original_parameters->Z_values,
|
|
original_parameters->Rmin,
|
|
original_parameters->Rmax );
|
|
}
|
|
else
|
|
{
|
|
// The following code prepares for:
|
|
// HepPolyhedron::createPolyhedron(int Nnodes, int Nfaces,
|
|
// const double xyz[][3],
|
|
// const int faces_vec[][4])
|
|
// Here is an extract from the header file HepPolyhedron.h:
|
|
/**
|
|
* Creates user defined polyhedron.
|
|
* This function allows to the user to define arbitrary polyhedron.
|
|
* The faces of the polyhedron should be either triangles or planar
|
|
* quadrilateral. Nodes of a face are defined by indexes pointing to
|
|
* the elements in the xyz array. Numeration of the elements in the
|
|
* array starts from 1 (like in fortran). The indexes can be positive
|
|
* or negative. Negative sign means that the corresponding edge is
|
|
* invisible. The normal of the face should be directed to exterior
|
|
* of the polyhedron.
|
|
*
|
|
* @param Nnodes number of nodes
|
|
* @param Nfaces number of faces
|
|
* @param xyz nodes
|
|
* @param faces_vec faces (quadrilaterals or triangles)
|
|
* @return status of the operation - is non-zero in case of problem
|
|
*/
|
|
const G4int numSide =
|
|
G4int(G4Polyhedron::GetNumberOfRotationSteps()
|
|
* (endPhi - startPhi) / twopi) + 1;
|
|
G4int nNodes;
|
|
G4int nFaces;
|
|
typedef G4double double3[3];
|
|
double3* xyz;
|
|
typedef G4int int4[4];
|
|
int4* faces_vec;
|
|
if (phiIsOpen)
|
|
{
|
|
// Triangulate open ends. Simple ear-chopping algorithm...
|
|
// I'm not sure how robust this algorithm is (J.Allison).
|
|
//
|
|
std::vector<G4bool> chopped(numCorner, false);
|
|
std::vector<G4int*> triQuads;
|
|
G4int remaining = numCorner;
|
|
G4int iStarter = 0;
|
|
while (remaining >= 3)
|
|
{
|
|
// Find unchopped corners...
|
|
//
|
|
G4int A = -1, B = -1, C = -1;
|
|
G4int iStepper = iStarter;
|
|
do
|
|
{
|
|
if (A < 0) { A = iStepper; }
|
|
else if (B < 0) { B = iStepper; }
|
|
else if (C < 0) { C = iStepper; }
|
|
do
|
|
{
|
|
if (++iStepper >= numCorner) { iStepper = 0; }
|
|
}
|
|
while (chopped[iStepper]);
|
|
}
|
|
while (C < 0 && iStepper != iStarter);
|
|
|
|
// Check triangle at B is pointing outward (an "ear").
|
|
// Sign of z cross product determines...
|
|
//
|
|
G4double BAr = corners[A].r - corners[B].r;
|
|
G4double BAz = corners[A].z - corners[B].z;
|
|
G4double BCr = corners[C].r - corners[B].r;
|
|
G4double BCz = corners[C].z - corners[B].z;
|
|
if (BAr * BCz - BAz * BCr < kCarTolerance)
|
|
{
|
|
G4int* tq = new G4int[3];
|
|
tq[0] = A + 1;
|
|
tq[1] = B + 1;
|
|
tq[2] = C + 1;
|
|
triQuads.push_back(tq);
|
|
chopped[B] = true;
|
|
--remaining;
|
|
}
|
|
else
|
|
{
|
|
do
|
|
{
|
|
if (++iStarter >= numCorner) { iStarter = 0; }
|
|
}
|
|
while (chopped[iStarter]);
|
|
}
|
|
}
|
|
// Transfer to faces...
|
|
//
|
|
nNodes = (numSide + 1) * numCorner;
|
|
nFaces = numSide * numCorner + 2 * triQuads.size();
|
|
faces_vec = new int4[nFaces];
|
|
G4int iface = 0;
|
|
G4int addition = numCorner * numSide;
|
|
G4int d = numCorner - 1;
|
|
for (G4int iEnd = 0; iEnd < 2; ++iEnd)
|
|
{
|
|
for (size_t i = 0; i < triQuads.size(); ++i)
|
|
{
|
|
// Negative for soft/auxiliary/normally invisible edges...
|
|
//
|
|
G4int a, b, c;
|
|
if (iEnd == 0)
|
|
{
|
|
a = triQuads[i][0];
|
|
b = triQuads[i][1];
|
|
c = triQuads[i][2];
|
|
}
|
|
else
|
|
{
|
|
a = triQuads[i][0] + addition;
|
|
b = triQuads[i][2] + addition;
|
|
c = triQuads[i][1] + addition;
|
|
}
|
|
G4int ab = std::abs(b - a);
|
|
G4int bc = std::abs(c - b);
|
|
G4int ca = std::abs(a - c);
|
|
faces_vec[iface][0] = (ab == 1 || ab == d)? a: -a;
|
|
faces_vec[iface][1] = (bc == 1 || bc == d)? b: -b;
|
|
faces_vec[iface][2] = (ca == 1 || ca == d)? c: -c;
|
|
faces_vec[iface][3] = 0;
|
|
++iface;
|
|
}
|
|
}
|
|
|
|
// Continue with sides...
|
|
|
|
xyz = new double3[nNodes];
|
|
const G4double dPhi = (endPhi - startPhi) / numSide;
|
|
G4double phi = startPhi;
|
|
G4int ixyz = 0;
|
|
for (G4int iSide = 0; iSide < numSide; ++iSide)
|
|
{
|
|
for (G4int iCorner = 0; iCorner < numCorner; ++iCorner)
|
|
{
|
|
xyz[ixyz][0] = corners[iCorner].r * std::cos(phi);
|
|
xyz[ixyz][1] = corners[iCorner].r * std::sin(phi);
|
|
xyz[ixyz][2] = corners[iCorner].z;
|
|
if (iSide == 0) // startPhi
|
|
{
|
|
if (iCorner < numCorner - 1)
|
|
{
|
|
faces_vec[iface][0] = ixyz + 1;
|
|
faces_vec[iface][1] = -(ixyz + numCorner + 1);
|
|
faces_vec[iface][2] = ixyz + numCorner + 2;
|
|
faces_vec[iface][3] = ixyz + 2;
|
|
}
|
|
else
|
|
{
|
|
faces_vec[iface][0] = ixyz + 1;
|
|
faces_vec[iface][1] = -(ixyz + numCorner + 1);
|
|
faces_vec[iface][2] = ixyz + 2;
|
|
faces_vec[iface][3] = ixyz - numCorner + 2;
|
|
}
|
|
}
|
|
else if (iSide == numSide - 1) // endPhi
|
|
{
|
|
if (iCorner < numCorner - 1)
|
|
{
|
|
faces_vec[iface][0] = ixyz + 1;
|
|
faces_vec[iface][1] = ixyz + numCorner + 1;
|
|
faces_vec[iface][2] = ixyz + numCorner + 2;
|
|
faces_vec[iface][3] = -(ixyz + 2);
|
|
}
|
|
else
|
|
{
|
|
faces_vec[iface][0] = ixyz + 1;
|
|
faces_vec[iface][1] = ixyz + numCorner + 1;
|
|
faces_vec[iface][2] = ixyz + 2;
|
|
faces_vec[iface][3] = -(ixyz - numCorner + 2);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (iCorner < numCorner - 1)
|
|
{
|
|
faces_vec[iface][0] = ixyz + 1;
|
|
faces_vec[iface][1] = -(ixyz + numCorner + 1);
|
|
faces_vec[iface][2] = ixyz + numCorner + 2;
|
|
faces_vec[iface][3] = -(ixyz + 2);
|
|
}
|
|
else
|
|
{
|
|
faces_vec[iface][0] = ixyz + 1;
|
|
faces_vec[iface][1] = -(ixyz + numCorner + 1);
|
|
faces_vec[iface][2] = ixyz + 2;
|
|
faces_vec[iface][3] = -(ixyz - numCorner + 2);
|
|
}
|
|
}
|
|
++iface;
|
|
++ixyz;
|
|
}
|
|
phi += dPhi;
|
|
}
|
|
|
|
// Last corners...
|
|
|
|
for (G4int iCorner = 0; iCorner < numCorner; ++iCorner)
|
|
{
|
|
xyz[ixyz][0] = corners[iCorner].r * std::cos(phi);
|
|
xyz[ixyz][1] = corners[iCorner].r * std::sin(phi);
|
|
xyz[ixyz][2] = corners[iCorner].z;
|
|
++ixyz;
|
|
}
|
|
}
|
|
else // !phiIsOpen - i.e., a complete 360 degrees.
|
|
{
|
|
nNodes = numSide * numCorner;
|
|
nFaces = numSide * numCorner;;
|
|
xyz = new double3[nNodes];
|
|
faces_vec = new int4[nFaces];
|
|
const G4double dPhi = (endPhi - startPhi) / numSide;
|
|
G4double phi = startPhi;
|
|
G4int ixyz = 0, iface = 0;
|
|
for (G4int iSide = 0; iSide < numSide; ++iSide)
|
|
{
|
|
for (G4int iCorner = 0; iCorner < numCorner; ++iCorner)
|
|
{
|
|
xyz[ixyz][0] = corners[iCorner].r * std::cos(phi);
|
|
xyz[ixyz][1] = corners[iCorner].r * std::sin(phi);
|
|
xyz[ixyz][2] = corners[iCorner].z;
|
|
|
|
if (iSide < numSide - 1)
|
|
{
|
|
if (iCorner < numCorner - 1)
|
|
{
|
|
faces_vec[iface][0] = ixyz + 1;
|
|
faces_vec[iface][1] = -(ixyz + numCorner + 1);
|
|
faces_vec[iface][2] = ixyz + numCorner + 2;
|
|
faces_vec[iface][3] = -(ixyz + 2);
|
|
}
|
|
else
|
|
{
|
|
faces_vec[iface][0] = ixyz + 1;
|
|
faces_vec[iface][1] = -(ixyz + numCorner + 1);
|
|
faces_vec[iface][2] = ixyz + 2;
|
|
faces_vec[iface][3] = -(ixyz - numCorner + 2);
|
|
}
|
|
}
|
|
else // Last side joins ends...
|
|
{
|
|
if (iCorner < numCorner - 1)
|
|
{
|
|
faces_vec[iface][0] = ixyz + 1;
|
|
faces_vec[iface][1] = -(ixyz + numCorner - nFaces + 1);
|
|
faces_vec[iface][2] = ixyz + numCorner - nFaces + 2;
|
|
faces_vec[iface][3] = -(ixyz + 2);
|
|
}
|
|
else
|
|
{
|
|
faces_vec[iface][0] = ixyz + 1;
|
|
faces_vec[iface][1] = -(ixyz - nFaces + numCorner + 1);
|
|
faces_vec[iface][2] = ixyz - nFaces + 2;
|
|
faces_vec[iface][3] = -(ixyz - numCorner + 2);
|
|
}
|
|
}
|
|
++ixyz;
|
|
++iface;
|
|
}
|
|
phi += dPhi;
|
|
}
|
|
}
|
|
G4Polyhedron* polyhedron = new G4Polyhedron;
|
|
G4int problem = polyhedron->createPolyhedron(nNodes, nFaces, xyz, faces_vec);
|
|
delete faces_vec;
|
|
delete xyz;
|
|
if (problem)
|
|
{
|
|
std::ostringstream oss;
|
|
oss << "Problem creating G4Polyhedron for: " << GetName();
|
|
G4Exception("G4Polycone::CreatePolyhedron()", "BadPolyhedron",
|
|
JustWarning, oss.str().c_str());
|
|
delete polyhedron;
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
return polyhedron;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//
|
|
// CreateNURBS
|
|
//
|
|
G4NURBS *G4Polycone::CreateNURBS() const
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// G4PolyconeHistorical stuff
|
|
//
|
|
|
|
G4PolyconeHistorical::G4PolyconeHistorical()
|
|
: Z_values(0), Rmin(0), Rmax(0)
|
|
{
|
|
}
|
|
|
|
G4PolyconeHistorical::~G4PolyconeHistorical()
|
|
{
|
|
delete [] Z_values;
|
|
delete [] Rmin;
|
|
delete [] Rmax;
|
|
}
|
|
|
|
G4PolyconeHistorical::
|
|
G4PolyconeHistorical( const G4PolyconeHistorical &source )
|
|
{
|
|
Start_angle = source.Start_angle;
|
|
Opening_angle = source.Opening_angle;
|
|
Num_z_planes = source.Num_z_planes;
|
|
|
|
Z_values = new G4double[Num_z_planes];
|
|
Rmin = new G4double[Num_z_planes];
|
|
Rmax = new G4double[Num_z_planes];
|
|
|
|
for( G4int i = 0; i < Num_z_planes; i++)
|
|
{
|
|
Z_values[i] = source.Z_values[i];
|
|
Rmin[i] = source.Rmin[i];
|
|
Rmax[i] = source.Rmax[i];
|
|
}
|
|
}
|
|
|
|
G4PolyconeHistorical&
|
|
G4PolyconeHistorical::operator=( const G4PolyconeHistorical& right )
|
|
{
|
|
if ( &right == this ) return *this;
|
|
|
|
if (&right)
|
|
{
|
|
Start_angle = right.Start_angle;
|
|
Opening_angle = right.Opening_angle;
|
|
Num_z_planes = right.Num_z_planes;
|
|
|
|
delete [] Z_values;
|
|
delete [] Rmin;
|
|
delete [] Rmax;
|
|
Z_values = new G4double[Num_z_planes];
|
|
Rmin = new G4double[Num_z_planes];
|
|
Rmax = new G4double[Num_z_planes];
|
|
|
|
for( G4int i = 0; i < Num_z_planes; i++)
|
|
{
|
|
Z_values[i] = right.Z_values[i];
|
|
Rmin[i] = right.Rmin[i];
|
|
Rmax[i] = right.Rmax[i];
|
|
}
|
|
}
|
|
return *this;
|
|
}
|