[831] | 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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[850] | 27 | // $Id: G4BSplineSurface.cc,v 1.15 2008/03/13 14:18:57 gcosmo Exp $ |
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[1058] | 28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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[831] | 29 | // |
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| 30 | // ---------------------------------------------------------------------- |
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| 31 | // GEANT 4 class source file |
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| 32 | // |
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| 33 | // G4BSplineSurface.cc |
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| 34 | // |
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| 35 | // ---------------------------------------------------------------------- |
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| 36 | |
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| 37 | #include "G4BSplineSurface.hh" |
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| 38 | #include "G4BezierSurface.hh" |
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| 39 | #include "G4ControlPoints.hh" |
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| 40 | #include "G4BoundingBox3D.hh" |
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| 41 | |
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| 42 | G4BSplineSurface::G4BSplineSurface() |
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| 43 | { |
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| 44 | distance = kInfinity; |
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| 45 | dir=ROW; |
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| 46 | first_hit = Hit = (G4UVHit*)0; |
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| 47 | ctl_points = (G4ControlPoints*)0; |
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| 48 | u_knots = v_knots = tmp_knots = (G4KnotVector*)0; |
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| 49 | } |
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| 50 | |
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| 51 | |
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| 52 | G4BSplineSurface::G4BSplineSurface(const char*, G4Ray&) |
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| 53 | { |
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| 54 | distance = kInfinity; |
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| 55 | first_hit = Hit = (G4UVHit*)0; |
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| 56 | ctl_points = (G4ControlPoints*)0; |
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| 57 | u_knots = v_knots = tmp_knots = (G4KnotVector*)0; |
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| 58 | } |
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| 59 | |
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| 60 | |
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| 61 | G4BSplineSurface::G4BSplineSurface(G4int u, G4int v, G4KnotVector& u_kv, |
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| 62 | G4KnotVector& v_kv, G4ControlPoints& cp) |
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| 63 | { |
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| 64 | first_hit = Hit = (G4UVHit*)0; |
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| 65 | |
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| 66 | order[0] = u+1; |
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| 67 | order[1] = v+1; |
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| 68 | |
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| 69 | u_knots = new G4KnotVector(u_kv); |
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| 70 | v_knots = new G4KnotVector(v_kv); |
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| 71 | tmp_knots = (G4KnotVector*)0; |
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| 72 | |
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| 73 | ctl_points = new G4ControlPoints(cp); |
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| 74 | } |
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| 75 | |
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| 76 | |
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| 77 | G4BSplineSurface::~G4BSplineSurface() |
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| 78 | { |
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| 79 | delete u_knots; |
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| 80 | delete v_knots; |
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| 81 | delete ctl_points; |
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| 82 | G4UVHit* temphit=Hit; |
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| 83 | Hit = first_hit; |
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| 84 | while(Hit!=(G4UVHit*)0) |
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| 85 | { |
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| 86 | Hit=Hit->GetNext(); |
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| 87 | delete temphit; |
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| 88 | temphit=Hit; |
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| 89 | } |
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| 90 | // delete temphit;// remove last |
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| 91 | |
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| 92 | } |
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| 93 | |
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| 94 | |
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| 95 | G4int G4BSplineSurface::Intersect(const G4Ray& rayref) |
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| 96 | { |
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| 97 | Intersected = 1; |
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| 98 | FindIntersections(rayref); |
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| 99 | G4BezierSurface *bez_ptr; |
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| 100 | bezier_list.MoveToFirst(); |
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| 101 | distance = kInfinity; |
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| 102 | |
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| 103 | while( bezier_list.GetSurface() != (G4Surface*)0) |
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| 104 | { |
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| 105 | bez_ptr = (G4BezierSurface*)bezier_list.GetSurface(); |
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| 106 | |
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| 107 | if(bez_ptr->IsActive()) |
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| 108 | { |
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| 109 | if(distance > bez_ptr->GetDistance()) |
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| 110 | { |
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| 111 | // Put data from closest bezier to b-spline data struct |
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| 112 | closest_hit = bez_ptr->AveragePoint(); |
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| 113 | distance = bez_ptr->GetDistance(); |
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| 114 | } |
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| 115 | else |
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| 116 | { |
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| 117 | // Set other beziers as inactive |
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| 118 | bez_ptr->SetActive(0); |
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| 119 | |
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| 120 | // Remove beziers that are not closest |
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| 121 | // bezier_list.RemoveSurface(bez_ptr); |
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| 122 | } |
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| 123 | } |
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| 124 | |
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| 125 | bezier_list.Step(); |
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| 126 | } |
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| 127 | |
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| 128 | bezier_list.MoveToFirst(); |
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| 129 | |
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| 130 | if(bezier_list.GetSize()) |
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| 131 | return 1; |
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| 132 | else |
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| 133 | { |
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| 134 | active=0; |
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| 135 | return 0; |
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| 136 | } |
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| 137 | } |
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| 138 | |
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| 139 | |
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| 140 | G4Point3D G4BSplineSurface::FinalIntersection() |
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| 141 | { |
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| 142 | // Compute the real intersection point. |
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| 143 | G4BezierSurface* bez_ptr; |
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| 144 | while ( bezier_list.GetSize() > 0 && |
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| 145 | bezier_list.GetSurface() != (G4Surface*)0) |
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| 146 | { |
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| 147 | bez_ptr = (G4BezierSurface*)bezier_list.GetSurface(); |
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| 148 | int tmp = 0; |
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| 149 | |
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| 150 | // L. Broglia |
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| 151 | // Modify G4BezierSurface intersection function name |
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| 152 | // tmp = bez_ptr->Intersect( bezier_list); |
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| 153 | tmp = bez_ptr->BIntersect( bezier_list); |
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| 154 | |
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| 155 | if(!tmp) |
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| 156 | { |
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| 157 | bezier_list.RemoveSurface(bez_ptr); |
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| 158 | if(bezier_list.GetSurface() != (G4Surface*)0) |
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| 159 | bezier_list.GetSurface()->SetActive(1); |
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| 160 | } |
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| 161 | else |
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| 162 | if(tmp==1) |
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| 163 | { |
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| 164 | active=1; |
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| 165 | // Hit found |
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| 166 | AddHit(bez_ptr->GetU(), bez_ptr->GetV()); |
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| 167 | |
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| 168 | // Delete beziers |
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| 169 | bezier_list.EmptyList(); |
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| 170 | } |
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| 171 | else |
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| 172 | if(tmp==2) |
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| 173 | { |
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| 174 | // The bezier was split so the last |
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| 175 | // two surfaces in the List should |
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| 176 | // be bbox tested and if passed |
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| 177 | // clipped in both dirs. |
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| 178 | |
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| 179 | // Move to first |
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| 180 | bezier_list.MoveToFirst(); |
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| 181 | // Find the second last. |
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| 182 | // What!? Casting a G4Surface* to a G4SurfaceList* !?!?!? - GC |
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| 183 | // |
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| 184 | // if(bezier_list.index != bezier_list.last) |
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| 185 | // while ( ((G4SurfaceList*)bezier_list.index)->next != |
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| 186 | // bezier_list.last) bezier_list.Step(); |
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| 187 | // |
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| 188 | // Try the following instead (if that's the wished behavior)... |
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| 189 | // |
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| 190 | if(bezier_list.GetSurface() != bezier_list.GetLastSurface()) |
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| 191 | while (bezier_list.GetNext() != bezier_list.GetLastSurface()) |
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| 192 | bezier_list.Step(); |
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| 193 | |
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| 194 | G4BezierSurface* tmp = (G4BezierSurface*) bezier_list.GetSurface(); |
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| 195 | tmp->CalcBBox(); |
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| 196 | |
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| 197 | // L. Broglia tmp->bbox->Test(); |
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| 198 | |
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| 199 | int result=0; |
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| 200 | if(tmp->bbox->GetTestResult()) |
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| 201 | { |
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| 202 | // Clip |
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| 203 | while(!result) |
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| 204 | result = tmp->ClipBothDirs(); |
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| 205 | } |
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| 206 | else |
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| 207 | { |
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| 208 | bezier_list.RemoveSurface(tmp); |
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| 209 | } |
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| 210 | // Second surface |
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| 211 | tmp = (G4BezierSurface*) bezier_list.GetLastSurface(); |
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| 212 | tmp->CalcBBox(); |
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| 213 | |
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| 214 | // L. Broglia tmp->bbox->Test(); |
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| 215 | |
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| 216 | if(tmp->bbox->GetTestResult()) |
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| 217 | { |
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| 218 | result = 0; |
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| 219 | while(!result) |
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| 220 | result = tmp->ClipBothDirs(); |
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| 221 | } |
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| 222 | else |
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| 223 | { |
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| 224 | bezier_list.RemoveSurface(tmp); |
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| 225 | } |
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| 226 | |
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| 227 | bezier_list.RemoveSurface(bez_ptr); |
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| 228 | bezier_list.MoveToFirst(); |
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| 229 | } |
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| 230 | |
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| 231 | bezier_list.Step(); |
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| 232 | }//While.... |
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| 233 | |
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| 234 | Hit = first_hit; |
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| 235 | G4Point3D result; |
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| 236 | if(Hit == (G4UVHit*)0) |
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| 237 | active = 0; |
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| 238 | else |
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| 239 | { |
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| 240 | while(Hit != (G4UVHit*)0) |
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| 241 | { |
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| 242 | // L. Broglia |
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| 243 | // Modify function name |
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| 244 | // result = Evaluate(); |
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| 245 | result = BSEvaluate(); |
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| 246 | |
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| 247 | Hit = Hit->GetNext(); |
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| 248 | } |
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| 249 | |
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| 250 | Hit = first_hit; |
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| 251 | } |
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| 252 | |
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| 253 | return result; |
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| 254 | } |
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| 255 | |
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| 256 | |
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| 257 | void G4BSplineSurface::CalcBBox() |
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| 258 | { |
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| 259 | |
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| 260 | // Finds the bounds of the b-spline surface iow |
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| 261 | // calculates the bounds for a bounding box |
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| 262 | // to the surface. The bounding box is used |
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| 263 | // for a preliminary check of intersection. |
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| 264 | |
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| 265 | G4Point3D box_min = G4Point3D( PINFINITY); |
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| 266 | G4Point3D box_max = G4Point3D(-PINFINITY); |
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| 267 | |
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| 268 | // Loop to search the whole control point mesh |
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| 269 | // for the minimum and maximum values for x, y and z. |
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| 270 | |
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| 271 | for(register int a = ctl_points->GetRows()-1; a>=0;a--) |
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| 272 | for(register int b = ctl_points->GetCols()-1; b>=0;b--) |
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| 273 | { |
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| 274 | G4Point3D tmp = ctl_points->Get3D(a,b); |
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| 275 | if((box_min.x()) > (tmp.x())) box_min.setX(tmp.x()); |
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| 276 | if((box_min.y()) > (tmp.y())) box_min.setY(tmp.y()); |
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| 277 | if((box_min.z()) > (tmp.z())) box_min.setZ(tmp.z()); |
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| 278 | if((box_max.x()) < (tmp.x())) box_max.setX(tmp.x()); |
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| 279 | if((box_max.y()) < (tmp.y())) box_max.setY(tmp.y()); |
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| 280 | if((box_max.z()) < (tmp.z())) box_max.setZ(tmp.z()); |
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| 281 | } |
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| 282 | bbox = new G4BoundingBox3D( box_min, box_max); |
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| 283 | } |
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| 284 | |
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| 285 | |
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| 286 | G4ProjectedSurface* G4BSplineSurface::CopyToProjectedSurface |
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| 287 | (const G4Ray& rayref) |
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| 288 | { |
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| 289 | G4ProjectedSurface* proj_srf = new G4ProjectedSurface() ; |
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| 290 | proj_srf->PutOrder(0,GetOrder(0)); |
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| 291 | proj_srf->PutOrder(1,GetOrder(1)); |
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| 292 | proj_srf->dir = dir; |
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| 293 | |
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| 294 | proj_srf->u_knots = new G4KnotVector(*u_knots); |
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| 295 | proj_srf->v_knots = new G4KnotVector(*v_knots); |
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| 296 | proj_srf->ctl_points = new G4ControlPoints |
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| 297 | (2, ctl_points->GetRows(), ctl_points->GetCols()); |
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| 298 | |
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| 299 | const G4Plane& plane1 = rayref.GetPlane(1); |
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| 300 | const G4Plane& plane2 = rayref.GetPlane(2); |
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| 301 | ProjectNURBSurfaceTo2D(plane1, plane2, proj_srf); |
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| 302 | |
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| 303 | return proj_srf; |
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| 304 | } |
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| 305 | |
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| 306 | |
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| 307 | void G4BSplineSurface::FindIntersections(const G4Ray& rayref) |
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| 308 | { |
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| 309 | // Do the projection to 2D |
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| 310 | G4ProjectedSurface* proj_srf = CopyToProjectedSurface(rayref); |
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| 311 | |
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| 312 | // Put surface in projected List |
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| 313 | projected_list.AddSurface(proj_srf); |
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| 314 | |
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| 315 | // Loop through List of projected surfaces |
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| 316 | while(projected_list.GetSize() > 0) |
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| 317 | { |
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| 318 | // Get first in List |
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| 319 | proj_srf = (G4ProjectedSurface*)projected_list.GetSurface(); |
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| 320 | |
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| 321 | // Create the bounding box for the projected surface. |
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| 322 | proj_srf->CalcBBox(); |
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| 323 | |
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| 324 | // L. Broglia proj_srf->bbox->Test(); |
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| 325 | |
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| 326 | // Check bbox test result is ok |
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| 327 | if(proj_srf->bbox->GetTestResult()) |
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| 328 | // Convert the projected surface to a bezier. Split if necessary. |
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| 329 | proj_srf->ConvertToBezier(projected_list, bezier_list); |
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| 330 | |
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| 331 | // Remove projected surface |
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| 332 | projected_list.RemoveSurface(proj_srf); |
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| 333 | } |
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| 334 | |
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| 335 | // Loop through the bezier List |
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| 336 | G4BezierSurface* bez_ptr; |
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| 337 | distance = kInfinity; |
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| 338 | |
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| 339 | while(bezier_list.GetSurface() != (G4Surface*)0) |
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| 340 | { |
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| 341 | bez_ptr = (G4BezierSurface*)bezier_list.GetSurface(); |
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| 342 | |
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| 343 | // Add a temporary Hit |
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| 344 | AddHit(bez_ptr->UAverage(), bez_ptr->VAverage()); |
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| 345 | |
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| 346 | // Evaluate Hit |
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| 347 | |
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| 348 | // L. Broglia |
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| 349 | // Modify function name |
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| 350 | // bez_ptr->SetAveragePoint(Evaluate()); |
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| 351 | bez_ptr->SetAveragePoint(BSEvaluate()); |
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| 352 | |
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| 353 | // Calculate distance to ray origin |
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| 354 | bez_ptr->CalcDistance(rayref.GetStart()); |
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| 355 | |
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| 356 | // Put closest to b_splines distance value |
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| 357 | if(bez_ptr->GetDistance() < distance) distance = bez_ptr->GetDistance(); |
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| 358 | |
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| 359 | // Remove the temporary Hit |
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| 360 | if (first_hit == Hit) first_hit = (G4UVHit*)0; |
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| 361 | delete Hit; |
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| 362 | Hit = (G4UVHit*)0; |
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| 363 | |
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| 364 | // Move to next in the List |
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| 365 | bezier_list.Step(); |
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| 366 | } |
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| 367 | |
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| 368 | bezier_list.MoveToFirst(); |
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| 369 | if(bezier_list.GetSize() == 0) |
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| 370 | { |
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| 371 | active=0; |
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| 372 | return; |
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| 373 | } |
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| 374 | |
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| 375 | // Check that approx Hit is in direction of ray |
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| 376 | const G4Point3D& Pt = rayref.GetStart(); |
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| 377 | const G4Vector3D& Dir = rayref.GetDir(); |
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| 378 | G4Point3D TestPoint = G4Point3D( (0.00001*Dir) + Pt ); |
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| 379 | G4BezierSurface* Bsrf = (G4BezierSurface*)bezier_list.GetSurface(0); |
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| 380 | |
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| 381 | G4Point3D AveragePoint = Bsrf->AveragePoint(); |
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| 382 | G4double TestDistance = TestPoint.distance2(AveragePoint); |
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| 383 | |
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| 384 | if(TestDistance > distance) |
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| 385 | // Hit behind ray starting point, no intersection. |
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| 386 | active=0; |
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| 387 | } |
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| 388 | |
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| 389 | |
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| 390 | void G4BSplineSurface::AddHit(G4double u, G4double v) |
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| 391 | { |
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| 392 | if(Hit == (G4UVHit*)0) |
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| 393 | { |
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| 394 | first_hit = new G4UVHit(u,v); |
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| 395 | first_hit->SetNext(0); |
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| 396 | Hit = first_hit; |
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| 397 | } |
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| 398 | else |
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| 399 | { |
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| 400 | Hit->SetNext(new G4UVHit(u,v)); |
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| 401 | Hit = Hit->GetNext(); |
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| 402 | Hit->SetNext(0); |
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| 403 | } |
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| 404 | } |
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| 405 | |
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| 406 | |
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| 407 | void G4BSplineSurface::ProjectNURBSurfaceTo2D |
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| 408 | (const G4Plane& plane1, const G4Plane& plane2, |
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| 409 | register G4ProjectedSurface* proj_srf) |
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| 410 | { |
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| 411 | // Projects the nurb surface so that the z-axis = ray. |
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| 412 | |
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| 413 | /* L. Broglia |
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| 414 | G4Point* tmp = (G4Point*)&ctl_points->get(0,0); |
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| 415 | */ |
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| 416 | |
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| 417 | G4PointRat tmp = ctl_points->GetRat(0,0); |
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| 418 | int rational = tmp.GetType();// Get the type of control point |
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| 419 | G4Point3D psrfcoords; |
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| 420 | register int rows = ctl_points->GetRows(); |
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| 421 | register int cols = ctl_points->GetCols(); |
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| 422 | |
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| 423 | for (register int i=0; i< rows; i++) |
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| 424 | for(register int j=0; j < cols;j++) |
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| 425 | { |
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| 426 | if ( rational==4 ) // 4 coordinates |
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| 427 | { |
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| 428 | G4PointRat& srfcoords = ctl_points->GetRat(i, j); |
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| 429 | |
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| 430 | // L. Broglia |
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| 431 | // Changes for new G4PointRat |
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| 432 | |
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| 433 | // Calculate the x- and y-coordinates for the new |
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| 434 | // 2-D surface. |
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| 435 | psrfcoords.setX(( srfcoords.x() * plane1.a |
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| 436 | +srfcoords.y() * plane1.b |
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| 437 | +srfcoords.z() * plane1.c |
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| 438 | -srfcoords.w() * plane1.d)); |
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| 439 | psrfcoords.setY(( srfcoords.x() * plane2.a |
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| 440 | +srfcoords.y() * plane2.b |
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| 441 | +srfcoords.z() * plane2.c |
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| 442 | -srfcoords.w() * plane2.d)); |
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| 443 | |
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| 444 | proj_srf->ctl_points->put(i,j,psrfcoords); |
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| 445 | } |
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| 446 | else // 3 coordinates |
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| 447 | { |
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| 448 | G4Point3D srfcoords = ctl_points->Get3D(i, j); |
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| 449 | |
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| 450 | psrfcoords.setX(( srfcoords.x() * plane1.a |
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| 451 | +srfcoords.y() * plane1.b |
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| 452 | +srfcoords.z() * plane1.c |
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| 453 | - plane1.d)); |
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| 454 | |
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| 455 | psrfcoords.setY(( srfcoords.x() * plane2.a |
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| 456 | +srfcoords.y() * plane2.b |
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| 457 | +srfcoords.z() * plane2.c |
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| 458 | - plane2.d)); |
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| 459 | |
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| 460 | proj_srf->ctl_points->put(i,j,psrfcoords); |
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| 461 | } |
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| 462 | } |
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| 463 | } |
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| 464 | |
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| 465 | /* L. Broglia |
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| 466 | Changes for new G4PointRat |
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| 467 | G4Point& G4BSplineSurface::InternalEvalCrv(int i, G4ControlPoints* crv)*/ |
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| 468 | |
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| 469 | G4PointRat& G4BSplineSurface::InternalEvalCrv(int i, G4ControlPoints* crv) |
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| 470 | { |
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| 471 | if ( ord <= 1 ) |
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| 472 | return crv->GetRat(i, k_index); |
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| 473 | |
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| 474 | register int j = k_index; |
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| 475 | |
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| 476 | while ( j > (k_index - ord + 1)) |
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| 477 | { |
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| 478 | register G4double k1, k2; |
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| 479 | |
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| 480 | k1 = tmp_knots->GetKnot((j + ord - 1)); |
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| 481 | k2 = tmp_knots->GetKnot(j); |
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| 482 | |
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| 483 | if ((std::abs(k1 - k2)) > kCarTolerance ) |
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| 484 | { |
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| 485 | /* L. Broglia |
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| 486 | register G4PointRat* pts1 = &crv->get(i,j-1); |
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| 487 | register G4PointRat* pts2 = &crv->get(i,j ); |
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| 488 | if(pts1->GetType()==3) |
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| 489 | { |
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| 490 | crv->CalcValues(k1, param, *(G4Point3D*)pts1, k2, *(G4Point3D*)pts2); |
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| 491 | crv->put(0, j, *(G4Point3D*)pts2); |
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| 492 | } |
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| 493 | else |
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| 494 | { |
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| 495 | crv->CalcValues(k1, param, *(G4PointRat*)pts1, k2, *(G4PointRat*)pts2); |
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| 496 | crv->put(0, j, *(G4PointRat*)pts2); |
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| 497 | } |
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| 498 | register G4PointRat* pts1 = &crv->GetRat(i,j-1); |
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| 499 | register G4PointRat* pts2 = &crv->GetRat(i,j ); |
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| 500 | */ |
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| 501 | } |
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| 502 | |
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| 503 | j--; |
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| 504 | } |
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| 505 | |
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| 506 | ord = ord-1; |
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| 507 | return InternalEvalCrv(0, crv); // Recursion |
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| 508 | } |
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| 509 | |
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| 510 | |
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| 511 | G4Point3D G4BSplineSurface::BSEvaluate() |
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| 512 | { |
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| 513 | register int i; |
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| 514 | register int row_size = ctl_points->GetRows(); |
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| 515 | register G4ControlPoints *diff_curve; |
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| 516 | register G4ControlPoints* curves; |
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| 517 | G4Point3D result; |
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| 518 | |
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| 519 | /* L. Broglia |
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| 520 | G4Point* tmp = (G4Point*)&ctl_points->get(0,0); |
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| 521 | */ |
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| 522 | |
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| 523 | G4PointRat* tmp = &ctl_points->GetRat(0,0); |
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| 524 | |
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| 525 | register int point_type = tmp->GetType(); |
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| 526 | diff_curve = new G4ControlPoints(point_type, row_size, 1); |
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| 527 | k_index = u_knots->GetKnotIndex(Hit->GetU(), GetOrder(ROW) ); |
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| 528 | |
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| 529 | ord = GetOrder(ROW); |
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| 530 | if(k_index==-1) |
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| 531 | { |
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| 532 | delete diff_curve; |
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| 533 | active = 0; |
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| 534 | return result; |
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| 535 | } |
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| 536 | |
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| 537 | curves=new G4ControlPoints(*ctl_points); |
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| 538 | tmp_knots = u_knots; |
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| 539 | param = Hit->GetU(); |
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| 540 | |
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| 541 | if(point_type == 4) |
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| 542 | { |
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| 543 | for ( i = 0; i < row_size; i++) |
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| 544 | { |
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| 545 | ord = GetOrder(ROW); |
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| 546 | G4PointRat rtr_pt = InternalEvalCrv(i, curves); |
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| 547 | diff_curve->put(0,i,rtr_pt); |
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| 548 | } |
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| 549 | |
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| 550 | k_index = v_knots->GetKnotIndex( Hit->GetV(), GetOrder(COL) ); |
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| 551 | if(k_index==-1) |
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| 552 | { |
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| 553 | delete diff_curve; |
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| 554 | delete curves; |
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| 555 | active = 0; |
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| 556 | return result; |
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| 557 | } |
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| 558 | |
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| 559 | ord = GetOrder(COL); |
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| 560 | tmp_knots = v_knots; |
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| 561 | param = Hit->GetV(); |
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| 562 | |
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| 563 | // Evaluate the diff_curve... |
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| 564 | // G4PointRat rat_result = (G4PointRat&) InternalEvalCrv(0, diff_curve); |
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| 565 | G4PointRat rat_result(InternalEvalCrv(0, diff_curve)); |
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| 566 | |
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| 567 | // Calc the 3D values. |
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| 568 | // L. Broglia |
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| 569 | // Changes for new G4PointRat |
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| 570 | result.setX(rat_result.x()/rat_result.w()); |
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| 571 | result.setY(rat_result.y()/rat_result.w()); |
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| 572 | result.setZ(rat_result.z()/rat_result.w()); |
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| 573 | } |
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| 574 | else |
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| 575 | if(point_type == 3) |
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| 576 | { |
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| 577 | for ( i = 0; i < row_size; i++) |
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| 578 | { |
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| 579 | ord = GetOrder(ROW); |
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| 580 | // G4Point3D rtr_pt = (G4Point3D&) InternalEvalCrv(i, curves); |
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| 581 | G4Point3D rtr_pt = (InternalEvalCrv(i, curves)).pt(); |
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| 582 | diff_curve->put(0,i,rtr_pt); |
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| 583 | } |
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| 584 | |
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| 585 | k_index = v_knots->GetKnotIndex( Hit->GetV(), GetOrder(COL) ); |
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| 586 | if(k_index==-1) |
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| 587 | { |
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| 588 | delete diff_curve; |
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| 589 | delete curves; |
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| 590 | active = 0; |
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| 591 | return result; |
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| 592 | } |
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| 593 | |
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| 594 | ord = GetOrder(COL); |
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| 595 | tmp_knots = v_knots; |
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| 596 | param = Hit->GetV(); |
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| 597 | |
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| 598 | // Evaluate the diff_curve... |
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| 599 | result = (InternalEvalCrv(0, diff_curve)).pt(); |
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| 600 | } |
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| 601 | |
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| 602 | delete diff_curve; |
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| 603 | delete curves; |
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| 604 | closest_hit = result; |
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| 605 | return result; |
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| 606 | } |
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| 607 | |
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| 608 | |
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| 609 | G4Point3D G4BSplineSurface::Evaluation(const G4Ray&) |
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| 610 | { |
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| 611 | // Delete old UVhits |
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| 612 | G4UVHit* temphit=Hit; |
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| 613 | while(Hit!=(G4UVHit*)0) |
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| 614 | { |
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| 615 | Hit=Hit->GetNext(); |
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| 616 | delete temphit; |
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| 617 | temphit=Hit; |
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| 618 | } |
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| 619 | |
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| 620 | // delete temphit; |
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| 621 | |
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| 622 | // Get the real Hit point |
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| 623 | closest_hit = FinalIntersection(); |
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| 624 | |
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| 625 | // The following part (commented out) is old bullshit |
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| 626 | // Check that Hit is not in a void i.e. InnerBoundary. |
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| 627 | // for(int a=0; a<NumberOfInnerBoundaries;a++) |
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| 628 | // if(InnerBoundary[a]->Inside(closest_hit, rayref)) |
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| 629 | // { |
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| 630 | // Active(0); |
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| 631 | // Distance(kInfinity); |
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| 632 | // return closest_hit; |
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| 633 | // } |
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| 634 | return closest_hit; |
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| 635 | } |
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| 636 | |
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| 637 | |
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| 638 | G4double G4BSplineSurface::ClosestDistanceToPoint(const G4Point3D& Pt) |
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| 639 | { |
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| 640 | G4double PointDistance=0; |
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| 641 | PointDistance = ctl_points->ClosestDistanceToPoint(Pt); |
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| 642 | return PointDistance; |
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| 643 | } |
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