| 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: G4BSplineSurface.hh,v 1.11 2006/06/29 18:38:11 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 | // Class G4BSplineSurface
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| 32 | //
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| 33 | // Class description:
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| 34 | //
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| 35 | // Definition of a generic BSpline surface.
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| 36 |
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| 37 | // Authors: J.Sulkimo, P.Urban.
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| 38 | // Revisions by: L.Broglia, G.Cosmo.
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| 39 | // ----------------------------------------------------------------------
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| 40 | #ifndef __BSPLINESURFACE_H
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| 41 | #define __BSPLINESURFACE_H
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| 42 |
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| 43 | #include "G4Point3D.hh"
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| 44 | #include "G4PointRat.hh"
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| 45 | #include "G4Surface.hh"
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| 46 | #include "G4ProjectedSurface.hh"
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| 47 | #include "G4UVHit.hh"
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| 48 |
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| 49 | class G4BSplineSurface : public G4Surface
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| 50 | {
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| 51 |
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| 52 | public: // with description
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| 53 |
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| 54 | G4BSplineSurface();
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| 55 | G4BSplineSurface(const char* nurbfilename, G4Ray& rayref);
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| 56 | G4BSplineSurface(G4int u, G4int v, G4KnotVector& u_kv, G4KnotVector& v_kv,
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| 57 | G4ControlPoints& cp);
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| 58 | virtual ~G4BSplineSurface();
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| 59 | // Constructors & destructor.
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| 60 |
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| 61 | G4int Intersect(const G4Ray&);
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| 62 | void CalcBBox();
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| 63 | // Finds the bounds of the b-spline surface.
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| 64 | // The bounding box is used for a preliminary check of intersection.
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| 65 |
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| 66 | inline G4double GetUHit() const;
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| 67 | inline G4double GetVHit() const;
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| 68 |
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| 69 | G4double ClosestDistanceToPoint(const G4Point3D&);
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| 70 |
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| 71 | inline void Reset();
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| 72 |
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| 73 | inline G4int GetRows() const;
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| 74 | inline G4int GetCols() const;
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| 75 | inline G4Point3D GetControlPoint(G4int a, G4int b) const;
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| 76 | // Accessors for control points.
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| 77 |
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| 78 | public:
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| 79 |
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| 80 | inline G4int MyType() const;
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| 81 |
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| 82 | private:
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| 83 |
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| 84 | G4BSplineSurface(const G4BSplineSurface&);
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| 85 | G4BSplineSurface& operator=(const G4BSplineSurface&);
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| 86 | // Private copy constructor and assignment operator.
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| 87 |
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| 88 | void FindIntersections(const G4Ray&);
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| 89 |
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| 90 | inline G4int GetOrder(G4int direction) const;
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| 91 | inline void PutOrder(G4int direction, G4int value);
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| 92 |
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| 93 | void AddHit(G4double u, G4double v);
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| 94 | void ProjectNURBSurfaceTo2D( const G4Plane& ,const G4Plane&,
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| 95 | register G4ProjectedSurface*);
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| 96 | // Projects the nurb surface so that the z-axis = ray.
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| 97 |
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| 98 | G4ProjectedSurface* CopyToProjectedSurface(const G4Ray&);
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| 99 | G4Point3D FinalIntersection();
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| 100 |
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| 101 | // L. Broglia
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| 102 | // Because G4BSplineSurface::Evaluate hides the virtual function
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| 103 | // G4Surface::Evaluate(const G4Ray&), I modified the function name
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| 104 | // G4Point3D Evaluate();
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| 105 | G4Point3D BSEvaluate();
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| 106 |
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| 107 | G4PointRat& InternalEvalCrv(G4int i, G4ControlPoints *crv);
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| 108 |
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| 109 | G4Point3D Evaluation(const G4Ray&);
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| 110 |
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| 111 | inline G4Vector3D SurfaceNormal(const G4Point3D& Pt) const;
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| 112 |
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| 113 | private:
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| 114 |
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| 115 | G4SurfaceList bezier_list;
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| 116 | G4SurfaceList projected_list;
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| 117 | short dir;
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| 118 | G4int order[2];
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| 119 | G4KnotVector *u_knots;
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| 120 | G4KnotVector *v_knots;
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| 121 | G4KnotVector *tmp_knots;
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| 122 | G4ControlPoints *ctl_points;
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| 123 | G4UVHit* Hit;
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| 124 | G4UVHit* first_hit;
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| 125 | G4int ord;
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| 126 | G4int k_index;
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| 127 | G4double param;
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| 128 | G4int Rational;
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| 129 | };
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| 130 |
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| 131 | #include "G4BSplineSurface.icc"
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| 132 |
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| 133 | #endif
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