| 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: G4KnotVector.hh,v 1.10 2007/05/11 13:49:31 gcosmo 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 G4KnotVector
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| 32 | //
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| 33 | // Class description:
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| 34 | //
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| 35 | // Utility class for operations on a vector of knots.
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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 __KNOTVECTOR_H
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| 41 | #define __KNOTVECTOR_H
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| 42 |
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| 43 | #include <cmath>
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| 44 | #include "geomdefs.hh"
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| 45 |
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| 46 | class G4KnotVector
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| 47 | {
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| 48 |
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| 49 | public: // with description
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| 50 |
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| 51 | G4KnotVector();
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| 52 | G4KnotVector(G4int sz);
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| 53 | ~G4KnotVector();
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| 54 | // Constructors & destructor.
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| 55 |
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| 56 | G4KnotVector(const G4KnotVector& orig);
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| 57 | // Copy constructor.
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| 58 |
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| 59 | G4KnotVector& operator=(const G4KnotVector& right);
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| 60 | // Assignment operator.
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| 61 |
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| 62 | inline G4int GetSize() const;
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| 63 | // Gets number of knots.
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| 64 |
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| 65 | inline G4double GetKnot(G4int knot_number) const;
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| 66 | // Retrieves knot from knot vector index knot_number.
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| 67 |
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| 68 | inline void PutKnot(G4int knot_number, G4double value);
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| 69 | // Sets knot vector index knot_number to value.
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| 70 |
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| 71 | G4KnotVector* MultiplyKnotVector(G4int num, G4double value);
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| 72 | // Adds the internal knots to the new knot vector.
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| 73 |
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| 74 | G4double* MergeKnotVector(const G4double *knots_to_add, G4int add_size);
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| 75 | // Creates the new vector by merging the old vector with the
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| 76 | // knots in the vector knots_to_add.
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| 77 |
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| 78 | G4int CheckKnotVector(G4double val) const;
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| 79 | // Finds out how many times val occurs in the knot vector.
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| 80 |
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| 81 | void ExtractKnotVector(G4KnotVector* kv, G4int upper, G4int lower);
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| 82 | // Copies either the first half or the second half of
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| 83 | // the new knot vector values to the knot vectors of the
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| 84 | // new surfaces created by splitting.
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| 85 |
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| 86 | G4int GetKnotIndex(G4double k_value, G4int order) const;
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| 87 | // Searches the knot vector for the value and returns the index
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| 88 | // This is used in the evaluation of the intersection to find
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| 89 | // out between which knots the intersection point is on the b-spline
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| 90 | // surface.
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| 91 |
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| 92 | private:
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| 93 |
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| 94 | inline G4double ApxEq(G4double x, G4double y) const;
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| 95 |
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| 96 | private:
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| 97 |
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| 98 | G4int k_size;
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| 99 | // Number of knots.
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| 100 |
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| 101 | G4double *knots;
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| 102 | // Knot vector.
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| 103 |
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| 104 | G4double kCarTolerance;
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| 105 | // Surface thickness.
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| 106 |
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| 107 | };
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| 108 |
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| 109 | #include "G4KnotVector.icc"
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| 110 |
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| 111 | #endif
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