| 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: geant4-09-04-beta-01 $ |
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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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