2003-01-25 21:13:13 +00:00
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// slip_skid_ball.cxx - an electric-powered turn indicator.
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// Written by David Megginson, started 2003.
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//
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// This file is in the Public Domain and comes with no warranty.
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#include "slip_skid_ball.hxx"
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#include <Main/fg_props.hxx>
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#include <Main/util.hxx>
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SlipSkidBall::SlipSkidBall ()
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{
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}
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SlipSkidBall::~SlipSkidBall ()
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{
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}
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void
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SlipSkidBall::init ()
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{
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2003-01-26 15:56:11 +00:00
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_serviceable_node =
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fgGetNode("/instrumentation/slip-skid-ball/serviceable", true);
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_y_accel_node = fgGetNode("/accelerations/pilot/y-accel-fps_sec", true);
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_z_accel_node = fgGetNode("/accelerations/pilot/z-accel-fps_sec", true);
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2003-01-25 21:13:13 +00:00
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_out_node =
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fgGetNode("/instrumentation/slip-skid-ball/indicated-slip-skid", true);
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}
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void
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2003-01-26 15:56:11 +00:00
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SlipSkidBall::update (double delta_time_sec)
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2003-01-25 21:13:13 +00:00
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{
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2003-01-26 15:56:11 +00:00
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if (_serviceable_node->getBoolValue()) {
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double d = -_z_accel_node->getDoubleValue();
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if (d < 1.0)
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d = 1.0;
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double pos = _y_accel_node->getDoubleValue() / d * 5.0;
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pos = fgGetLowPass(_out_node->getDoubleValue(), pos, delta_time_sec);
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_out_node->setDoubleValue(pos);
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}
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2003-01-25 21:13:13 +00:00
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}
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// end of slip_skid_ball.cxx
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