RealFunction.h

/*
    Hyperspace Explorer - visualizing higher-dimensional geometry
    Copyright (C) 2008-2010 Lene Preuss <lene.preuss@gmail.com>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
    (Seriously, has anyone ever done this?)

*/
#ifndef REAL_FUNCTION_H
#define REAL_FUNCTION_H

#include "FunctionHolder.h"

#include "ParametricFunction.h"
#include "MultiDimensionalVector.h"

#include <memory>


class RealFunction: public FunctionHolder<4, 3, double> {

  public:

    typedef VecMath::Vector<4> &function_type(double, double, double);
    typedef VecMath::Vector<4> raw_function_type (double, double, double);

    RealFunction();
    RealFunction(ParametricFunction<4, 3> *function);
    RealFunction(double tmin, double tmax, double dt,
                 double umin, double umax, double du,
                 double vmin, double vmax, double dv,
                 ParameterMap _parms = ParameterMap());
    virtual ~RealFunction();

    virtual void ReInit(double tmin, double tmax, double dt,
                        double umin, double umax, double du,
                        double vmin, double vmax, double dv);

    virtual std::string getFunctionName() const;

    VecMath::Vector<4> &operator () (double t, double u, double v);

    virtual unsigned getNumParameters();

  protected:

    VecMath::Vector<4> &normal(double t, double u, double v);

    virtual void Initialize (void);

    std::shared_ptr< ParametricFunction<4, 3> > _function;

  private:

    class Impl;
    std::unique_ptr<Impl> pImpl_;

};

namespace {
  DisplayableClass displayable_class_real_function(
    "RealFunction", "Functions R³ -> R", "FunctionHolder"
  );
}
#endif