Gabriele Cosmo
90 lines
2.4 KiB
C++
90 lines
2.4 KiB
C++
// This code implementation is the intellectual property of
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// the GEANT4 collaboration.
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//
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// By copying, distributing or modifying the Program (or any work
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// based on the Program) you indicate your acceptance of this statement,
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// and all its terms.
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//
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// $Id: G4KnotVector.hh,v 1.6 2000/11/08 14:22:02 gcosmo Exp $
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// GEANT4 tag $Name: geant4-03-00 $
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//
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// ----------------------------------------------------------------------
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// Class G4KnotVector
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//
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// Class description:
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//
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// Utility class for operations on a vector of knots.
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// Authors: J.Sulkimo, P.Urban.
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// Revisions by: L.Broglia, G.Cosmo.
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// ----------------------------------------------------------------------
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#ifndef __KNOTVECTOR_H
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#define __KNOTVECTOR_H
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#include <math.h>
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#include "geomdefs.hh"
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class G4KnotVector
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{
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public: // with description
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G4KnotVector();
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G4KnotVector(G4int sz);
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~G4KnotVector();
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// Constructors & destructor.
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G4KnotVector(const G4KnotVector& orig);
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// Copy constructor.
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G4KnotVector& operator=(const G4KnotVector& right);
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// Assignment operator.
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inline G4int GetSize() const;
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// Gets number of knots.
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inline G4double GetKnot(G4int knot_number) const;
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// Retrieves knot from knot vector index knot_number.
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inline void PutKnot(G4int knot_number, G4double value);
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// Sets knot vector index knot_number to value.
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G4KnotVector* MultiplyKnotVector(G4int num, G4double value);
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// Adds the internal knots to the new knot vector.
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G4double* MergeKnotVector(const G4double *knots_to_add, G4int add_size);
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// Creates the new vector by merging the old vector with the
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// knots in the vector knots_to_add.
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G4int CheckKnotVector(G4double val) const;
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// Finds out how many times val occurs in the knot vector.
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void ExtractKnotVector(G4KnotVector* kv, G4int upper, G4int lower);
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// Copies either the first half or the second half of
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// the new knot vector values to the knot vectors of the
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// new surfaces created by splitting.
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G4int GetKnotIndex(G4double k_value, G4int order) const;
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// Searches the knot vector for the value and returns the index
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// This is used in the evaluation of the intersection to find
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// out between which knots the intersection point is on the b-spline
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// surface.
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private:
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inline G4double ApxEq(G4double x, G4double y) const;
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private:
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G4int k_size;
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// Number of knots.
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G4double *knots;
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// Knot vector.
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};
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#include "G4KnotVector.icc"
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#endif
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