Gabriele Cosmo
79 lines
2.2 KiB
C++
79 lines
2.2 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 1.2.4.1 1999/12/07 20:48:19 gunter Exp $
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// GEANT4 tag $Name: geant4-01-00 $
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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 "STEPaggregate.h"
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#include "geomdefs.hh"
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class G4KnotVector
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{
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public:
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G4KnotVector();
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// G4KnotVector(const int Size, const int* MultiList, STEPaggregate& Aggr);
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// G4KnotVector(const int Size, STEPaggregate& Aggr);
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G4KnotVector(const int sz);
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G4KnotVector(const G4KnotVector& old_kv);
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~G4KnotVector();
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// Gets number of knots
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inline int GetSize()const {return k_size;};
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// Retrieves knot from knot vector index knot_number
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inline G4double GetKnot(const int knot_number){return knots[knot_number];}
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// Sets knot vector index knot_number to value
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inline void PutKnot(const int knot_number, const G4double value)
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{
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knots[knot_number]=value;
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}
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// Adds the internal knots to the new knot vector
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G4KnotVector* MultiplyKnotVector( const int num, const G4double value);
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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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G4double* MergeKnotVector( const G4double *knots_to_add, const int add_size);
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// Finds out how many Times val occurs in the knot vector
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int CheckKnotVector(const G4double val);
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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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void ExtractKnotVector( G4KnotVector* kv, const int upper, const int lower);
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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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int GetKnotIndex(G4double k_value, const int order);
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private:
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// Number of knots
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int k_size;
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// Knot vector
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G4double *knots;
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inline G4double ApxEq(const G4double x,const G4double y)
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{
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return (fabs(x - y) < kCarTolerance);
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}
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};
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#endif
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