class Bezier3D : ParametricLine
{
%TypeHeaderCode
#include <Bezier3D.h>
%End

  public:
    /**Default constructor*/
    Bezier3D();
    /**Constructor, par is a pointer to the parent, controlpoly a controlpolygon*/
    // Bezier3D( ParametricLine* par, QVector<Point3D*>* controlpoly );
    /**Destructor*/
    virtual ~Bezier3D();
    /**Do not use this method, since a Bezier curve does not consist of other curves*/
    virtual void add( ParametricLine *pl );
    /**Calculates the first derivative and assigns it to v*/
    virtual void calcFirstDer( float t, Vector3D* v );
    /**Calculates the second derivative and assigns it to v*/
    virtual void calcSecDer( float t, Vector3D* v );
    //virtual Point3D calcPoint(float t);
    /**Calculates the point on the curve and assigns it to p*/
    virtual void calcPoint( float t, Point3D* p );
    /**changes the order of control points*/
    virtual void changeDirection();
    //virtual void draw(QPainter* p);
    //virtual bool intersects(ParametricLine* pal);
    /**Do not use this method, since a Bezier curve does not consist of other curves*/
    virtual void remove( int i );
    /**Returns a control point*/
    virtual const Point3D* getControlPoint( int number ) const;
    /**Returns a pointer to the control polygon*/
    // virtual const QVector<Point3D*>* getControlPoly() const;
    /**Returns the degree of the curve*/
    virtual int getDegree() const;
    /**Returns the parent*/
    virtual ParametricLine* getParent() const;
    /** Sets the parent*/
    virtual void setParent( ParametricLine* par );
    /**Sets the control polygon*/
    // virtual void setControlPoly( QVector<Point3D*>* cp );
};