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obsolete through changes to Instrumentation/{instrument_mgr,altimeter}.?xx

and Systems/static.?xx, and addition of Environment/atmosphere.?xx
This commit is contained in:
mfranz 2007-03-31 12:28:04 +00:00
parent 7e6bc192ba
commit ed4f3afcdf
2 changed files with 0 additions and 173 deletions

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@ -1,112 +0,0 @@
// encoder.cxx -- class to impliment an altitude encoder
//
// Written by Roy Vegard Ovesen, started September 2004.
//
// Copyright (C) 2004 Roy Vegard Ovesen - rvovesen@tiscali.no
//
// 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.
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "encoder.hxx"
// Altitude based on pressure difference from sea level.
// pressure difference inHG, altitude ft
static double altitude_data[][2] = {
{ -8.41, -8858.27 },
{ 0.00, 0.00 },
{ 3.05, 2952.76 },
{ 5.86, 5905.51 },
{ 8.41, 8858.27 },
{ 10.74, 11811.02 },
{ 12.87, 14763.78 },
{ 14.78, 17716.54 },
{ 16.55, 20669.29 },
{ 18.13, 23622.05 },
{ 19.62, 26574.80 },
{ 20.82, 29527.56 },
{ 21.96, 32480.31 },
{ 23.01, 35433.07 },
{ 23.91, 38385.83 },
{ 24.71, 41338.58 },
{ 25.40, 44291.34 },
{ 26.00, 47244.09 },
{ 26.51, 50196.85 },
{ 26.96, 53149.61 },
{ 27.35, 56102.36 },
{ 27.68, 59055.12 },
{ 27.98, 62007.87 },
{ 29.62, 100000.00 }, // just to fill it in
{ -1, -1 }
};
int round (double value, int nearest=1)
{
return ((int) (value/nearest + 0.5)) * nearest;
}
Encoder::Encoder(SGPropertyNode *node)
:
_name(node->getStringValue("name", "encoder")),
_num(node->getIntValue("number", 0)),
_static_pressure(node->getStringValue("static-pressure", "/systems/static/pressure-inhg")),
altitudeTable(new SGInterpTable)
{
int i;
for ( i = 0; altitude_data[i][0] != -1; i++ )
altitudeTable->addEntry(altitude_data[i][0], altitude_data[i][1]);
}
Encoder::~Encoder()
{
delete altitudeTable;
}
void Encoder::init()
{
string branch;
branch = "/instrumentation/" + _name;
SGPropertyNode *node = fgGetNode(branch.c_str(), _num, true );
// Inputs
staticPressureNode = fgGetNode(_static_pressure.c_str(), true);
busPowerNode = fgGetNode("/systems/electrical/outputs/encoder", true);
serviceableNode = node->getChild("serviceable", 0, true);
// Outputs
pressureAltitudeNode = node->getChild("pressure-alt-ft", 0, true);
modeCAltitudeNode = node->getChild("mode-c-alt-ft", 0, true);
}
void Encoder::update(double dt)
{
if (serviceableNode->getBoolValue())
{
double staticPressure = staticPressureNode->getDoubleValue();
double pressureAltitude =
altitudeTable->interpolate(29.92 - staticPressure);
int pressureAlt = round(pressureAltitude, 10);
int modeCAltitude = round(pressureAltitude, 100);
pressureAltitudeNode->setIntValue(pressureAlt);
modeCAltitudeNode->setIntValue(modeCAltitude);
}
}

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// encoder.hxx -- class to impliment an altitude encoder
//
// Written by Roy Vegard Ovesen, started September 2004.
//
// Copyright (C) 2004 Roy Vegard Ovesen - rvovesen@tiscali.no
//
// 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 ENCODER_HXX
#define ENCODER_HXX 1
#ifndef __cplusplus
# error This library requires C++
#endif
#include <Main/fg_props.hxx>
#include <simgear/math/interpolater.hxx>
#include <simgear/structure/subsystem_mgr.hxx>
class Encoder : public SGSubsystem
{
public:
Encoder(SGPropertyNode *node);
~Encoder();
void init ();
void update (double dt);
private:
// Inputs
SGPropertyNode_ptr staticPressureNode;
SGPropertyNode_ptr busPowerNode;
SGPropertyNode_ptr serviceableNode;
// Outputs
SGPropertyNode_ptr pressureAltitudeNode;
SGPropertyNode_ptr modeCAltitudeNode;
// Internal
string _name;
int _num;
string _static_pressure;
SGInterpTable* altitudeTable;
};
#endif // ENCODER_HXX