| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | //
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| 27 | // $Id: G4PhantomParameterisation.cc,v 1.4 2008/01/22 15:02:36 gcosmo Exp $
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| 28 | // GEANT4 tag $ Name:$
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| 29 | //
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| 30 | // class G4PhantomParameterisation implementation
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| 31 | //
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| 32 | // May 2007 Pedro Arce, first version
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| 33 | //
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| 34 | // --------------------------------------------------------------------
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| 35 |
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| 36 | #include "G4PhantomParameterisation.hh"
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| 37 |
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| 38 | #include "globals.hh"
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| 39 | #include "G4VSolid.hh"
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| 40 | #include "G4VPhysicalVolume.hh"
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| 41 | #include "G4LogicalVolume.hh"
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| 42 | #include "G4VVolumeMaterialScanner.hh"
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| 43 | #include "G4GeometryTolerance.hh"
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| 44 |
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| 45 | //------------------------------------------------------------------
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| 46 | G4PhantomParameterisation::G4PhantomParameterisation()
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| 47 | {
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| 48 | // Initialise data
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| 49 | //
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| 50 | fMaterialIndices = 0;
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| 51 | fContainerWallX = 0.;
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| 52 | fContainerWallY = 0.;
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| 53 | fContainerWallZ = 0.;
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| 54 |
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| 55 | kCarTolerance = G4GeometryTolerance::GetInstance()->GetSurfaceTolerance();
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| 56 |
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| 57 | bSkipEqualMaterials = 1;
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| 58 | }
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| 59 |
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| 60 |
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| 61 | //------------------------------------------------------------------
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| 62 | G4PhantomParameterisation::~G4PhantomParameterisation()
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| 63 | {
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| 64 | }
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| 65 |
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| 66 |
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| 67 | //------------------------------------------------------------------
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| 68 | void G4PhantomParameterisation::
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| 69 | BuildContainerSolid( G4VPhysicalVolume *pMotherPhysical )
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| 70 | {
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| 71 | fContainerSolid = pMotherPhysical->GetLogicalVolume()->GetSolid();
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| 72 | fContainerWallX = fNoVoxelX * fVoxelHalfX;
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| 73 | fContainerWallY = fNoVoxelY * fVoxelHalfY;
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| 74 | fContainerWallZ = fNoVoxelZ * fVoxelHalfZ;
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| 75 |
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| 76 | // CheckVoxelsFillContainer();
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| 77 | }
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| 78 |
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| 79 |
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| 80 | //------------------------------------------------------------------
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| 81 | void G4PhantomParameterisation::
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| 82 | ComputeTransformation(const G4int copyNo, G4VPhysicalVolume *physVol ) const
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| 83 | {
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| 84 | // Voxels cannot be rotated, return translation
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| 85 | //
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| 86 | G4ThreeVector trans = GetTranslation( copyNo );
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| 87 |
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| 88 | physVol->SetTranslation( trans );
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| 89 | }
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| 90 |
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| 91 |
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| 92 | //------------------------------------------------------------------
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| 93 | G4ThreeVector G4PhantomParameterisation::
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| 94 | GetTranslation(const G4int copyNo ) const
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| 95 | {
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| 96 | CheckCopyNo( copyNo );
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| 97 |
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| 98 | size_t nx;
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| 99 | size_t ny;
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| 100 | size_t nz;
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| 101 |
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| 102 | ComputeVoxelIndices( copyNo, nx, ny, nz );
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| 103 |
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| 104 | G4ThreeVector trans( (2*nx+1)*fVoxelHalfX - fContainerWallX,
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| 105 | (2*ny+1)*fVoxelHalfY - fContainerWallY,
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| 106 | (2*nz+1)*fVoxelHalfZ - fContainerWallZ);
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| 107 | return trans;
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| 108 | }
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| 109 |
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| 110 |
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| 111 | //------------------------------------------------------------------
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| 112 | G4VSolid* G4PhantomParameterisation::
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| 113 | ComputeSolid(const G4int, G4VPhysicalVolume *pPhysicalVol)
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| 114 | {
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| 115 | return pPhysicalVol->GetLogicalVolume()->GetSolid();
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| 116 | }
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| 117 |
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| 118 |
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| 119 | //------------------------------------------------------------------
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| 120 | G4Material* G4PhantomParameterisation::
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| 121 | ComputeMaterial(const G4int copyNo, G4VPhysicalVolume *, const G4VTouchable *)
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| 122 | {
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| 123 | CheckCopyNo( copyNo );
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| 124 | size_t matIndex = GetMaterialIndex(copyNo);
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| 125 |
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| 126 | return fMaterials[ matIndex ];
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| 127 | }
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| 128 |
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| 129 |
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| 130 | //------------------------------------------------------------------
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| 131 | size_t G4PhantomParameterisation::
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| 132 | GetMaterialIndex( size_t copyNo ) const
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| 133 | {
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| 134 | CheckCopyNo( copyNo );
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| 135 |
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| 136 | return *(fMaterialIndices+copyNo);
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| 137 | }
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| 138 |
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| 139 |
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| 140 | //------------------------------------------------------------------
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| 141 | size_t G4PhantomParameterisation::
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| 142 | GetMaterialIndex( size_t nx, size_t ny, size_t nz ) const
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| 143 | {
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| 144 | size_t copyNo = nx + fNoVoxelX*ny + fNoVoxelXY*nz;
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| 145 | return GetMaterialIndex( copyNo );
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| 146 | }
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| 147 |
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| 148 |
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| 149 | //------------------------------------------------------------------
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| 150 | G4Material* G4PhantomParameterisation::GetMaterial( size_t nx, size_t ny, size_t nz) const
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| 151 | {
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| 152 | return fMaterials[GetMaterialIndex(nx,ny,nz)];
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| 153 | }
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| 154 |
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| 155 | //------------------------------------------------------------------
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| 156 | G4Material* G4PhantomParameterisation::GetMaterial( size_t copyNo ) const
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| 157 | {
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| 158 | return fMaterials[GetMaterialIndex(copyNo)];
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| 159 | }
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| 160 |
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| 161 | //------------------------------------------------------------------
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| 162 | void G4PhantomParameterisation::
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| 163 | ComputeVoxelIndices(const G4int copyNo, size_t& nx,
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| 164 | size_t& ny, size_t& nz ) const
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| 165 | {
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| 166 | CheckCopyNo( copyNo );
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| 167 | nx = size_t(copyNo%fNoVoxelX);
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| 168 | ny = size_t( (copyNo/fNoVoxelX)%fNoVoxelY );
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| 169 | nz = size_t(copyNo/fNoVoxelXY);
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| 170 | }
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| 171 |
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| 172 |
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| 173 | //------------------------------------------------------------------
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| 174 | void G4PhantomParameterisation::
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| 175 | CheckVoxelsFillContainer( G4double contX, G4double contY, G4double contZ ) const
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| 176 | {
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| 177 | G4double toleranceForWarning = 0.25*kCarTolerance;
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| 178 |
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| 179 | // Any bigger value than 0.25*kCarTolerance will give a warning in
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| 180 | // G4NormalNavigation::ComputeStep(), because the Inverse of a container
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| 181 | // translation that is Z+epsilon gives -Z+epsilon (and the maximum tolerance
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| 182 | // in G4Box::Inside is 0.5*kCarTolerance
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| 183 | //
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| 184 | G4double toleranceForError = 1.*kCarTolerance;
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| 185 |
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| 186 | // Any bigger value than kCarTolerance will give an error in GetReplicaNo()
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| 187 | //
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| 188 | if( std::fabs(contX-fNoVoxelX*fVoxelHalfX) >= toleranceForError
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| 189 | || std::fabs(contY-fNoVoxelY*fVoxelHalfY) >= toleranceForError
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| 190 | || std::fabs(contZ-fNoVoxelZ*fVoxelHalfZ) >= toleranceForError )
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| 191 | {
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| 192 | G4cerr << "ERROR - G4PhantomParameterisation::CheckVoxelsFillContainer()"
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| 193 | << G4endl
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| 194 | << " Voxels do not fully fill the container: "
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| 195 | << fContainerSolid->GetName() << G4endl
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| 196 | << " DiffX= " << contX-fNoVoxelX*fVoxelHalfX << G4endl
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| 197 | << " DiffY= " << contY-fNoVoxelY*fVoxelHalfY << G4endl
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| 198 | << " DiffZ= " << contZ-fNoVoxelZ*fVoxelHalfZ << G4endl
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| 199 | << " Maximum difference is: " << toleranceForError << G4endl;
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| 200 | G4Exception("G4PhantomParameterisation::CheckVoxelsFillContainer()",
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| 201 | "InvalidSetup", FatalException,
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| 202 | "Voxels do not fully fill the container!");
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| 203 |
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| 204 | }
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| 205 | else if( std::fabs(contX-fNoVoxelX*fVoxelHalfX) >= toleranceForWarning
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| 206 | || std::fabs(contY-fNoVoxelY*fVoxelHalfY) >= toleranceForWarning
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| 207 | || std::fabs(contZ-fNoVoxelZ*fVoxelHalfZ) >= toleranceForWarning )
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| 208 | {
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| 209 | G4cerr << "WARNING - G4PhantomParameterisation::CheckVoxelsFillContainer()"
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| 210 | << G4endl
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| 211 | << " Voxels do not fully fill the container: "
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| 212 | << fContainerSolid->GetName() << G4endl
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| 213 | << " DiffX= " << contX-fNoVoxelX*fVoxelHalfX << G4endl
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| 214 | << " DiffY= " << contY-fNoVoxelY*fVoxelHalfY << G4endl
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| 215 | << " DiffZ= " << contZ-fNoVoxelZ*fVoxelHalfZ << G4endl
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| 216 | << " Maximum difference is: " << toleranceForWarning
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| 217 | << G4endl;
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| 218 | G4Exception("G4PhantomParameterisation::CheckVoxelsFillContainer()",
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| 219 | "InvalidSetup", JustWarning,
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| 220 | "Voxels do not fully fill the container!");
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| 221 | }
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| 222 | }
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| 223 |
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| 224 |
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| 225 | //------------------------------------------------------------------
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| 226 | G4int G4PhantomParameterisation::
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| 227 | GetReplicaNo( const G4ThreeVector& localPoint, const G4ThreeVector& localDir )
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| 228 | {
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| 229 |
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| 230 | // Check first that point is really inside voxels
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| 231 | //
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| 232 | if( fContainerSolid->Inside( localPoint ) == kOutside )
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| 233 | {
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| 234 | G4cerr << "ERROR - G4PhantomParameterisation::GetReplicaNo()" << G4endl
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| 235 | << " localPoint - " << localPoint
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| 236 | << " - is outside container solid: "
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| 237 | << fContainerSolid->GetName() << G4endl;
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| 238 | G4Exception("G4PhantomParameterisation::GetReplicaNo()", "InvalidSetup",
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| 239 | FatalErrorInArgument, "Point outside voxels!");
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| 240 | }
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| 241 |
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| 242 | // Check the voxel numbers corresponding to localPoint
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| 243 | // When a particle is on a surface, it may be between -kCarTolerance and
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| 244 | // +kCartolerance. By a simple distance as:
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| 245 | // G4int nx = G4int( (localPoint.x()+)/fVoxelHalfX/2.);
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| 246 | // those between -kCartolerance and 0 will be placed on voxel N-1 and those
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| 247 | // between 0 and kCarTolerance on voxel N.
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| 248 | // To avoid precision problems place the tracks that are on the surface on
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| 249 | // voxel N-1 if they have negative direction and on voxel N if they have
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| 250 | // positive direction.
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| 251 | // Add +kCarTolerance so that they are first placed on voxel N, and then
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| 252 | // if the direction is negative substract 1
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| 253 |
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| 254 | G4double fx = (localPoint.x()+fContainerWallX+kCarTolerance)/(fVoxelHalfX*2.);
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| 255 | G4int nx = G4int(fx);
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| 256 |
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| 257 | G4double fy = (localPoint.y()+fContainerWallY+kCarTolerance)/(fVoxelHalfY*2.);
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| 258 | G4int ny = G4int(fy);
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| 259 |
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| 260 | G4double fz = (localPoint.z()+fContainerWallZ+kCarTolerance)/(fVoxelHalfZ*2.);
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| 261 | G4int nz = G4int(fz);
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| 262 |
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| 263 | // If it is on the surface side, check the direction: if direction is
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| 264 | // negative place it on the previous voxel (if direction is positive it is
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| 265 | // already in the next voxel...).
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| 266 | // Correct also cases where n = -1 or n = fNoVoxel. It is always traced to be
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| 267 | // due to multiple scattering: track is entering a voxel but multiple
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| 268 | // scattering changes the angle towards outside
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| 269 | //
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| 270 | if( fx - nx < kCarTolerance/fVoxelHalfX )
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| 271 | {
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| 272 | if( localDir.x() < 0 )
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| 273 | {
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| 274 | if( nx != 0 )
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| 275 | {
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| 276 | nx -= 1;
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| 277 | }
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| 278 | }
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| 279 | else
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| 280 | {
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| 281 | if( nx == G4int(fNoVoxelX) )
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| 282 | {
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| 283 | nx -= 1;
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| 284 | }
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| 285 | }
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| 286 | }
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| 287 | if( fy - ny < kCarTolerance/fVoxelHalfY )
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| 288 | {
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| 289 | if( localDir.y() < 0 )
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| 290 | {
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| 291 | if( ny != 0 )
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| 292 | {
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| 293 | ny -= 1;
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| 294 | }
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| 295 | }
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| 296 | else
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| 297 | {
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| 298 | if( ny == G4int(fNoVoxelY) )
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| 299 | {
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| 300 | ny -= 1;
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| 301 | }
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| 302 | }
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| 303 | }
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| 304 | if( fz - nz < kCarTolerance/fVoxelHalfZ )
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| 305 | {
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| 306 | if( localDir.z() < 0 )
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| 307 | {
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| 308 | if( nz != 0 )
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| 309 | {
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| 310 | nz -= 1;
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| 311 | }
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| 312 | }
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| 313 | else
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| 314 | {
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| 315 | if( nz == G4int(fNoVoxelZ) )
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| 316 | {
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| 317 | nz -= 1;
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| 318 | }
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| 319 | }
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| 320 | }
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| 321 |
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| 322 | G4int copyNo = nx + fNoVoxelX*ny + fNoVoxelXY*nz;
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| 323 |
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| 324 | // Check if there are still errors
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| 325 | //
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| 326 | G4bool isOK = true;
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| 327 | if( nx < 0 )
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| 328 | {
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| 329 | nx = 0;
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| 330 | isOK = false;
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| 331 | }
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| 332 | else if( nx >= G4int(fNoVoxelX) )
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| 333 | {
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| 334 | nx = fNoVoxelX-1;
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| 335 | isOK = false;
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| 336 | }
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| 337 | if( ny < 0 )
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| 338 | {
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| 339 | ny = 0;
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| 340 | isOK = false;
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| 341 | }
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| 342 | else if( ny >= G4int(fNoVoxelY) )
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| 343 | {
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| 344 | ny = fNoVoxelY-1;
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| 345 | isOK = false;
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| 346 | }
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| 347 | if( nz < 0 )
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| 348 | {
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| 349 | nz = 0;
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| 350 | isOK = false;
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| 351 | }
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| 352 | else if( nz >= G4int(fNoVoxelZ) )
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| 353 | {
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| 354 | nz = fNoVoxelZ-1;
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| 355 | isOK = false;
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| 356 | }
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| 357 | if( !isOK )
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| 358 | {
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| 359 | G4cerr << "WARNING - G4PhantomParameterisation::GetReplicaNo()" << G4endl
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| 360 | << " LocalPoint: " << localPoint << G4endl
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| 361 | << " LocalDir: " << localDir << G4endl
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| 362 | << " Voxel container size: " << fContainerWallX
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| 363 | << " " << fContainerWallY << " " << fContainerWallZ << G4endl
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| 364 | << " LocalPoint - wall: "
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| 365 | << localPoint.x()-fContainerWallX << " "
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| 366 | << localPoint.y()-fContainerWallY << " "
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| 367 | << localPoint.z()-fContainerWallZ << G4endl;
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| 368 | G4Exception("G4PhantomParameterisation::GetReplicaNo()",
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| 369 | "Wrong-copy-number", JustWarning,
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| 370 | "Corrected the copy number! It was negative or too big");
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| 371 | copyNo = nx + fNoVoxelX*ny + fNoVoxelXY*nz;
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| 372 | }
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| 373 |
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| 374 | // CheckCopyNo( copyNo ); // not needed, just for debugging code
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| 375 |
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| 376 | return copyNo;
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| 377 | }
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| 378 |
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| 379 |
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| 380 | //------------------------------------------------------------------
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| 381 | void G4PhantomParameterisation::CheckCopyNo( const G4int copyNo ) const
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| 382 | {
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| 383 | if( copyNo < 0 || copyNo >= G4int(fNoVoxel) )
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| 384 | {
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| 385 | G4cerr << "ERROR - G4PhantomParameterisation::CheckCopyNo()" << G4endl
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| 386 | << " Copy number: " << copyNo << G4endl
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| 387 | << " Total number of voxels: " << fNoVoxel << G4endl;
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| 388 | G4Exception("G4PhantomParameterisation::CheckCopyNo()",
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| 389 | "Wrong-copy-number", FatalErrorInArgument,
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| 390 | "Copy number is negative or too big!");
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| 391 | }
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| 392 | }
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