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flightgear/src/Autopilot/digitalfilter.hxx
Torsten Dreyer 5ebdcdc3d5 Some autopilot works
- add new <update-interval-secs> for autopilot components.
  This does what it says.
- add new method to PeriodicalValue to normalize symmetric around zero
- move the DigitalFilterImplementation out of the header file
- refactor NoiseSpikeFilter: spare some cpu-cycles and respect periodical
  output
2012-02-12 11:41:21 +01:00

66 lines
1.8 KiB
C++

// digitalfilter.hxx - a selection of digital filters
//
// Written by Torsten Dreyer
// Based heavily on work created by Curtis Olson, started January 2004.
//
// Copyright (C) 2004 Curtis L. Olson - http://www.flightgear.org/~curt
// Copyright (C) 2010 Torsten Dreyer - Torsten (at) t3r (dot) de
//
// 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.
//
#ifndef __DIGITALFILTER_HXX
#define __DIGITALFILTER_HXX 1
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "analogcomponent.hxx"
namespace FGXMLAutopilot {
/**
* brief@ DigitalFilter - a selection of digital filters
*
*/
class DigitalFilter : public AnalogComponent
{
private:
SGSharedPtr<class DigitalFilterImplementation> _implementation;
enum InitializeTo {
INITIALIZE_OUTPUT,
INITIALIZE_INPUT,
INITIALIZE_NONE
};
protected:
bool configure( const std::string & nodeName, SGPropertyNode_ptr configNode);
void update( bool firstTime, double dt);
InputValueList _Tf;
InputValueList _samples;
InputValueList _rateOfChange;
InputValueList _gain;
InitializeTo _initializeTo;
public:
DigitalFilter();
~DigitalFilter();
};
} // namespace FGXMLAutopilot
#endif