| 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: G4NURBStubesector.cc,v 1.12 2006/06/29 19:06:55 gunter Exp $
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| 28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $
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| 29 | //
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| 30 | //
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| 31 | // Olivier Crumeyrolle 12 September 1996
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| 32 |
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| 33 | // Tubesector builder implementation
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| 34 | // OC 290896
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| 35 |
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| 36 | #include "G4NURBStubesector.hh"
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| 37 | #include <sstream>
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| 38 |
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| 39 | G4NURBStubesector::G4NURBStubesector(G4double r, G4double R,
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| 40 | G4double DZ, G4double PHI1, G4double PHI2)
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| 41 | : G4NURBS( 2, 3, // linear along U, quadratic along V
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| 42 | 5, DecideNbrCtrlPts(PHI1, PHI2),
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| 43 | // rectangle along U, required stuff along V
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| 44 | // we must use a static function which
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| 45 | // take the two angles because the
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| 46 | // mother constructor is initialised
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| 47 | // before everything
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| 48 | Regular, // the knot vector along U will be generated
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| 49 | RegularRep ) // circular like knot vector also
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| 50 | {
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| 51 | // check angles
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| 52 | G4double deltaPHI = PHI2-PHI1;
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| 53 | while (deltaPHI <= 0) { PHI2 += twopi; deltaPHI += twopi; };
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| 54 |
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| 55 | G4int f = (int)floor(deltaPHI / (halfpi)); //number of pi/2 arcs
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| 56 |
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| 57 | const G4double mr = (r+R)/2;
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| 58 |
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| 59 | const G4double cp1 = std::cos(PHI1);
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| 60 | const G4double sp1 = std::sin(PHI1);
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| 61 | const G4double cp2 = std::cos(PHI2);
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| 62 | const G4double sp2 = std::sin(PHI2);
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| 63 |
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| 64 |
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| 65 | // define control points
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| 66 | CP(mpCtrlPts[ 0] , cp1*mr, sp1*mr, 0, 1 );
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| 67 | CP(mpCtrlPts[ 1] , cp1*mr, sp1*mr, 0, 1 );
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| 68 | CP(mpCtrlPts[ 2] , cp1*mr, sp1*mr, 0, 1 );
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| 69 | CP(mpCtrlPts[ 3] , cp1*mr, sp1*mr, 0, 1 );
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| 70 | CP(mpCtrlPts[ 4] , cp1*mr, sp1*mr, 0, 1 );
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| 71 |
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| 72 | CP(mpCtrlPts[ 5] , cp1*mr, sp1*mr, 0, 1 );
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| 73 | CP(mpCtrlPts[ 6] , cp1*mr, sp1*mr, 0, 1 );
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| 74 | CP(mpCtrlPts[ 7] , cp1*mr, sp1*mr, 0, 1 );
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| 75 | CP(mpCtrlPts[ 8] , cp1*mr, sp1*mr, 0, 1 );
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| 76 | CP(mpCtrlPts[ 9] , cp1*mr, sp1*mr, 0, 1 );
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| 77 |
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| 78 | CP(mpCtrlPts[10] , cp1*r, sp1*r, DZ, 1 );
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| 79 | CP(mpCtrlPts[11] , cp1*R, sp1*R, DZ, 1 );
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| 80 | CP(mpCtrlPts[12] , cp1*R, sp1*R, -DZ, 1 );
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| 81 | CP(mpCtrlPts[13] , cp1*r, sp1*r, -DZ, 1 );
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| 82 | CP(mpCtrlPts[14] , cp1*r, sp1*r, DZ, 1 );
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| 83 |
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| 84 | t_indCtrlPt i = 15;
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| 85 | G4double srcAngle = PHI1;
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| 86 | G4double deltaAngleo2;
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| 87 |
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| 88 | G4double destAngle = halfpi + PHI1;
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| 89 |
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| 90 | for(; f > 0; f--)
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| 91 | {
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| 92 | // the first arc CP is already Done
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| 93 |
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| 94 | deltaAngleo2 = (destAngle - srcAngle) / 2;
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| 95 | const G4double csa = std::cos(srcAngle);
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| 96 | const G4double ssa = std::sin(srcAngle);
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| 97 | const G4double tdao2 = std::tan(deltaAngleo2);
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| 98 |
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| 99 | // to calculate the intermediate CP :
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| 100 | // rotate by srcAngle the (1, tdao2) point
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| 101 | const t_Coord x = csa - ssa*tdao2;
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| 102 | const t_Coord y = ssa + csa*tdao2;
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| 103 |
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| 104 | // weight of the CP
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| 105 | const G4Float weight = (std::cos(deltaAngleo2));
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| 106 |
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| 107 | // initialization. postfix ++ because i initialized to 15
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| 108 | CP(mpCtrlPts[i++], x*r, y*r, DZ, 1, weight);
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| 109 | CP(mpCtrlPts[i++], x*R, y*R, DZ, 1, weight);
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| 110 | CP(mpCtrlPts[i++], x*R, y*R, -DZ, 1, weight);
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| 111 | CP(mpCtrlPts[i++], x*r, y*r, -DZ, 1, weight);
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| 112 | CP(mpCtrlPts[i++], x*r, y*r, DZ, 1, weight);
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| 113 |
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| 114 | // end CP (which is the first CP of the next arc)
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| 115 | const G4double cda = std::cos(destAngle);
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| 116 | const G4double sda = std::sin(destAngle);
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| 117 | CP(mpCtrlPts[i++], cda*r, sda*r, DZ, 1);
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| 118 | CP(mpCtrlPts[i++], cda*R, sda*R, DZ, 1);
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| 119 | CP(mpCtrlPts[i++], cda*R, sda*R, -DZ, 1);
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| 120 | CP(mpCtrlPts[i++], cda*r, sda*r, -DZ, 1);
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| 121 | CP(mpCtrlPts[i++], cda*r, sda*r, DZ, 1);
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| 122 |
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| 123 | // prepare next arc
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| 124 | srcAngle = destAngle;
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| 125 | destAngle += halfpi;
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| 126 | }
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| 127 |
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| 128 | // f == 0, final Arc
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| 129 | // could be handled in the loops
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| 130 |
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| 131 | destAngle = PHI2;
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| 132 | deltaAngleo2 = (destAngle - srcAngle) / 2;
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| 133 | const G4double csa = std::cos(srcAngle);
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| 134 | const G4double ssa = std::sin(srcAngle);
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| 135 | const G4double tdao2 = std::tan(deltaAngleo2);
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| 136 |
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| 137 | // to calculate the intermediate CP :
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| 138 | // rotate by srcAngle the (1, tdao2) point
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| 139 | const t_Coord x = csa - ssa*tdao2;
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| 140 | const t_Coord y = ssa + csa*tdao2;
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| 141 |
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| 142 | // weight of the CP
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| 143 | const G4Float weight = (std::cos(deltaAngleo2));
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| 144 |
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| 145 | // initialization.
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| 146 | CP(mpCtrlPts[i++], x*r, y*r, DZ, 1, weight);
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| 147 | CP(mpCtrlPts[i++], x*R, y*R, DZ, 1, weight);
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| 148 | CP(mpCtrlPts[i++], x*R, y*R, -DZ, 1, weight);
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| 149 | CP(mpCtrlPts[i++], x*r, y*r, -DZ, 1, weight);
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| 150 | CP(mpCtrlPts[i++], x*r, y*r, DZ, 1, weight);
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| 151 |
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| 152 | // end CP
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| 153 | const G4double cda = std::cos(destAngle);
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| 154 | const G4double sda = std::sin(destAngle);
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| 155 | CP(mpCtrlPts[i++], cda*r, sda*r, DZ, 1);
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| 156 | CP(mpCtrlPts[i++], cda*R, sda*R, DZ, 1);
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| 157 | CP(mpCtrlPts[i++], cda*R, sda*R, -DZ, 1);
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| 158 | CP(mpCtrlPts[i++], cda*r, sda*r, -DZ, 1);
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| 159 | CP(mpCtrlPts[i++], cda*r, sda*r, DZ, 1);
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| 160 |
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| 161 | if (i != (mtotnbrCtrlPts - 10) )
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| 162 | {
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| 163 | G4cerr << "\nERROR: G4NURBStubesector::G4NURBStubesector: wrong index,"
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| 164 | << i << " instead of " << (mtotnbrCtrlPts - 10)
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| 165 | << "\n\tThe tubesector won't be correct."
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| 166 | << G4endl;
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| 167 | }
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| 168 |
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| 169 | CP(mpCtrlPts[i++] , cp2*mr, sp2*mr, 0, 1);
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| 170 | CP(mpCtrlPts[i++] , cp2*mr, sp2*mr, 0, 1);
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| 171 | CP(mpCtrlPts[i++] , cp2*mr, sp2*mr, 0, 1);
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| 172 | CP(mpCtrlPts[i++] , cp2*mr, sp2*mr, 0, 1);
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| 173 | CP(mpCtrlPts[i++] , cp2*mr, sp2*mr, 0, 1);
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| 174 |
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| 175 | CP(mpCtrlPts[i++] , cp2*mr, sp2*mr, 0, 1);
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| 176 | CP(mpCtrlPts[i++] , cp2*mr, sp2*mr, 0, 1);
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| 177 | CP(mpCtrlPts[i++] , cp2*mr, sp2*mr, 0, 1);
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| 178 | CP(mpCtrlPts[i++] , cp2*mr, sp2*mr, 0, 1);
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| 179 | CP(mpCtrlPts[i++] , cp2*mr, sp2*mr, 0, 1);
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| 180 |
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| 181 | // possible to put a DZ DZ -DZ -DZ DZ column to scratch
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| 182 | // to a line instead of a point
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| 183 |
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| 184 | // creating the nurbs identity
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| 185 | std::ostringstream tmpstr;
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| 186 | tmpstr << "Tubs" << " \tPHI1=" << PHI1 << " ; PHI2=" << PHI2;
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| 187 | mpwhoami = new char [tmpstr.str().length() + 1];
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| 188 | mpwhoami = std::strcpy(mpwhoami, tmpstr.str().c_str());
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| 189 | }
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| 190 |
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| 191 | const char* G4NURBStubesector::Whoami() const
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| 192 | {
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| 193 | return mpwhoami;
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| 194 | }
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| 195 |
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| 196 | G4NURBStubesector::~G4NURBStubesector()
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| 197 | {
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| 198 | if (mpwhoami) { delete [] mpwhoami; mpwhoami = 0; }
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| 199 | }
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| 200 |
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| 201 | G4NURBStubesector::t_inddCtrlPt
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| 202 | G4NURBStubesector::DecideNbrCtrlPts(G4double PHI1, G4double PHI2)
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| 203 | {
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| 204 | // check angles
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| 205 | G4double deltaPHI = PHI2-PHI1;
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| 206 | while (deltaPHI <= 0) { PHI2 += twopi; deltaPHI += twopi; }
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| 207 | G4double k = deltaPHI / (halfpi);
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| 208 |
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| 209 | // G4cerr << " k " << k << G4endl;
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| 210 | // G4cerr << " fk " << std::floor(k) << G4endl;
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| 211 | // G4cerr << " ifk " << ((int)(std::floor(k))) << G4endl;
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| 212 | // G4cerr << " n " << (2*((int)(std::floor(k))) + 7) << G4endl;
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| 213 |
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| 214 | return ( 2*((int)(std::floor(k))) + 7 );
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| 215 | }
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