TransferFunction.h

/* -*- mode: c++ -*-
 *
 * pointing/transferfunctions/TransferFunction.h --
 *
 * Initial software
 * Authors: Géry Casiez, Nicolas Roussel
 * Copyright © Inria
 *
 * http://libpointing.org/
 *
 * This software may be used and distributed according to the terms of
 * the GNU General Public License version 2 or any later version.
 *
 */

#ifndef TransferFunction_h
#define TransferFunction_h

#include <pointing/utils/URI.h>
#include <pointing/utils/TimeStamp.h>
#include <pointing/input/PointingDevice.h>
#include <pointing/output/DisplayDevice.h>

#include <string>
#include <iostream>
#include <list>

namespace pointing {

  class TransferFunction {

  protected:

    TransferFunction(void) {}

    void normalizeInput(int *dx, int *dy, PointingDevice *input) const;

    void normalizeOutput(int *dx, int *dy, DisplayDevice *output) const;

  public:

    static std::list<std::string> schemes(void) ;
    
    static TransferFunction* create(const char* function_uri,
                    PointingDevice* input, DisplayDevice* output) ;

    static TransferFunction* create(std::string function_uri,
                    PointingDevice* input, DisplayDevice* output) ;

    static TransferFunction* create(URI &function_uri,
                    PointingDevice* input, DisplayDevice* output) ;

    virtual void clearState(void) = 0 ;

    virtual void applyi(int dxMickey, int dyMickey, int *dxPixel, int *dyPixel,
               TimeStamp::inttime timestamp=TimeStamp::undef) = 0 ;

    virtual void applyd(int dxMickey, int dyMickey, double *dxPixel, double *dyPixel,
               TimeStamp::inttime timestamp=TimeStamp::undef) = 0;

    virtual URI getURI(bool expanded=false) const = 0 ;

    virtual void setDebugLevel(int /*level*/) {}
    virtual void debug(std::ostream& /*out*/) const {}
   
    virtual ~TransferFunction() {}

  } ;

}

#endif