parametriccurve.h

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#pragma once
                                                                                
/*+
________________________________________________________________________
(C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
Author:        A.H. Bril
Date:          23-10-1996
________________________________________________________________________

-*/

#include "geometrymod.h"
#include "geomelement.h"

class Plane3;

namespace Geometry
{

mExpClass(Geometry) ParametricCurve : public Element
{
public:
    virtual Coord3      computePosition( float ) const  = 0;
    virtual Coord3      computeTangent( float ) const   = 0;
    virtual bool        findClosestPosition( float& p, const Coord3&,
                                             float eps=1e-2 ) const;
    virtual bool        findClosestIntersection( float& p, const Plane3&,
                                                 float eps=1e-2 ) const;
    virtual bool        isCircular() const { return false; }
    void                getPosIDs( TypeSet<GeomPosID>&, bool=true ) const;
    Iterator*           createIterator() const;
    virtual bool        insertPosition(GeomPosID,const Coord3&)         = 0;
    virtual StepInterval<int>   parameterRange() const                  = 0;
};

};