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// Copyright (c) 2010 INRIA Sophia-Antipolis (France).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org).
//
// $URL$
// $Id$
// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
//
//
// Author(s) : Stephane Tayeb
//
//******************************************************************************
// File Description :
//******************************************************************************
#include <QObject>
#include "Implicit_function_interface.h"
class Klein_implicit_function :
public QObject,
public Implicit_function_interface
{
Q_OBJECT
Q_INTERFACES(Implicit_function_interface)
Q_PLUGIN_METADATA(IID "com.geometryfactory.Mesh3Demo.Implicit_function_interface/1.0" FILE "klein_implicit_function.json")
public:
virtual QString name() const { return "Klein function"; }
virtual double operator()(double x, double y, double z) const
{
return (x*x+y*y+z*z+2*y-1)
* ( (x*x+y*y+z*z-2*y-1) *(x*x+y*y+z*z-2*y-1)-8*z*z)
+ 16*x*z* (x*x+y*y+z*z-2*y-1);
}
virtual Bbox bbox() const
{
const double radius = 6.;
double r = radius * 1.1;
return Bbox(-r,-r,-r,r,r,r);
}
};
#include "Klein_implicit_function.moc"
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