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flightgear/src/FDM/UIUCModel/uiuc_wrapper.cpp
david 3b870192f4 First steps in a weather reorganization. Note especially that 
properties have been renamed from wind-(north|east|down)-fps to
wind-from-(north|east|down)-fps, and the FDMs modified appropriately.
No other changes should be visible unless FG_OLD_WEATHER is defined.
2002-02-19 01:26:44 +00:00

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/**********************************************************************
FILENAME: uiuc_wrapper.cpp
----------------------------------------------------------------------
DESCRIPTION: A wrapper(interface) between the UIUC Aeromodel (C++ files)
and the LaRCsim FDM (C files)
----------------------------------------------------------------------
STATUS: alpha version
----------------------------------------------------------------------
REFERENCES:
----------------------------------------------------------------------
HISTORY: 01/26/2000 initial release
03/09/2001 (DPM) added support for gear
06/18/2001 (RD) Made uiuc_recorder its own routine.
07/19/2001 (RD) Added uiuc_vel_init() to initialize
the velocities.
08/27/2001 (RD) Added uiuc_initial_init() to help
in starting an A/C at an initial condition
----------------------------------------------------------------------
AUTHOR(S): Bipin Sehgal <bsehgal@uiuc.edu>
Robert Deters <rdeters@uiuc.edu>
David Megginson <david@megginson.com>
----------------------------------------------------------------------
VARIABLES:
----------------------------------------------------------------------
INPUTS: *
----------------------------------------------------------------------
OUTPUTS: *
----------------------------------------------------------------------
CALLED BY: *
----------------------------------------------------------------------
CALLS TO: *
----------------------------------------------------------------------
COPYRIGHT: (C) 2000 by Michael Selig
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.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA or view http://www.gnu.org/copyleft/gpl.html.
**********************************************************************/
#include <simgear/compiler.h>
#include <simgear/misc/sg_path.hxx>
#include <Aircraft/aircraft.hxx>
#ifndef FG_OLD_WEATHER
#include <WeatherCM/FGLocalWeatherDatabase.h>
#else
#include <Weather/weather.hxx>
#endif
#include "uiuc_aircraft.h"
#include "uiuc_aircraftdir.h"
#include "uiuc_coefficients.h"
#include "uiuc_engine.h"
#include "uiuc_gear.h"
#include "uiuc_aerodeflections.h"
#include "uiuc_recorder.h"
#include "uiuc_menu.h"
#include "uiuc_betaprobe.h"
#include <FDM/LaRCsim/ls_generic.h>
// #include "Main/simple_udp.h"
#include "uiuc_fog.h" //321654
#if !defined (SG_HAVE_NATIVE_SGI_COMPILERS)
SG_USING_STD(cout);
SG_USING_STD(endl);
#endif
extern "C" void uiuc_init_aeromodel ();
extern "C" void uiuc_force_moment(double dt);
extern "C" void uiuc_engine_routine();
extern "C" void uiuc_gear_routine();
extern "C" void uiuc_record_routine(double dt);
extern "C" void uiuc_vel_init ();
extern "C" void uiuc_initial_init ();
AIRCRAFT *aircraft_ = new AIRCRAFT;
AIRCRAFTDIR *aircraftdir_ = new AIRCRAFTDIR;
// SendArray testarray(4950);
/* Convert float to string */
//string ftoa(double in)
//{
// static char temp[20];
// sprintf(temp,"%g",in);
// return (string)temp;
//}
void uiuc_initial_init ()
{
if (P_body_init_true)
P_body = P_body_init;
if (Q_body_init_true)
Q_body = Q_body_init;
if (R_body_init_true)
R_body = R_body_init;
if (Phi_init_true)
Phi = Phi_init;
if (Theta_init_true)
Theta = Theta_init;
if (Psi_init_true)
Psi = Psi_init;
if (U_body_init_true)
U_body = U_body_init;
if (V_body_init_true)
V_body = V_body_init;
if (W_body_init_true)
W_body = W_body_init;
}
void uiuc_vel_init ()
{
if (U_body_init_true && V_body_init_true && W_body_init_true)
{
double det_T_l_to_b, cof11, cof12, cof13, cof21, cof22, cof23, cof31, cof32, cof33;
det_T_l_to_b = T_local_to_body_11*(T_local_to_body_22*T_local_to_body_33-T_local_to_body_23*T_local_to_body_32) - T_local_to_body_12*(T_local_to_body_21*T_local_to_body_33-T_local_to_body_23*T_local_to_body_31) + T_local_to_body_13*(T_local_to_body_21*T_local_to_body_32-T_local_to_body_22*T_local_to_body_31);
cof11 = T_local_to_body_22 * T_local_to_body_33 - T_local_to_body_23 * T_local_to_body_32;
cof12 = T_local_to_body_23 * T_local_to_body_31 - T_local_to_body_21 * T_local_to_body_33;
cof13 = T_local_to_body_21 * T_local_to_body_32 - T_local_to_body_22 * T_local_to_body_31;
cof21 = T_local_to_body_13 * T_local_to_body_32 - T_local_to_body_12 * T_local_to_body_33;
cof22 = T_local_to_body_11 * T_local_to_body_33 - T_local_to_body_13 * T_local_to_body_31;
cof23 = T_local_to_body_12 * T_local_to_body_31 - T_local_to_body_11 * T_local_to_body_32;
cof31 = T_local_to_body_12 * T_local_to_body_23 - T_local_to_body_13 * T_local_to_body_22;
cof32 = T_local_to_body_13 * T_local_to_body_21 - T_local_to_body_11 * T_local_to_body_23;
cof33 = T_local_to_body_11 * T_local_to_body_22 - T_local_to_body_12 * T_local_to_body_21;
V_north = (cof11*U_body+cof21*V_body+cof31*W_body)/det_T_l_to_b;
V_east_rel_ground = (cof12*U_body+cof22*V_body+cof32*W_body)/det_T_l_to_b;
V_down = (cof13*U_body+cof23*V_body+cof33*W_body)/det_T_l_to_b;
V_east = V_east_rel_ground + OMEGA_EARTH*Sea_level_radius*cos(Lat_geocentric);
}
}
void uiuc_init_aeromodel ()
{
SGPath path(globals->get_fg_root());
path.append(aircraft_dir);
path.append("aircraft.dat");
cout << "We are using "<< path.str() << endl;
uiuc_initializemaps(); // Initialize the <string,int> maps
uiuc_menu(path.str()); // Read the specified aircraft file
}
void uiuc_force_moment(double dt)
{
double qS = Dynamic_pressure * Sw;
double qScbar = qS * cbar;
double qSb = qS * bw;
uiuc_aerodeflections(dt);
uiuc_coefficients();
/* Calculate the wind axis forces */
if (CX && CZ)
{
CD = -CX * cos(Alpha) - CZ * sin(Alpha);
CL = CX * sin(Alpha) - CZ * cos(Alpha);
}
F_X_wind = -1 * CD * qS;
F_Y_wind = CY * qS;
F_Z_wind = -1 * CL * qS;
/* wind-axis to body-axis transformation */
F_X_aero = F_X_wind * Cos_alpha * Cos_beta - F_Y_wind * Cos_alpha * Sin_beta - F_Z_wind * Sin_alpha;
F_Y_aero = F_X_wind * Sin_beta + F_Y_wind * Cos_beta;
F_Z_aero = F_X_wind * Sin_alpha * Cos_beta - F_Y_wind * Sin_alpha * Sin_beta + F_Z_wind * Cos_alpha;
/* Moment calculations */
M_l_aero = Cl * qSb;
M_m_aero = Cm * qScbar;
M_n_aero = Cn * qSb;
/* Call flight data recorder */
// if (Simtime >= recordStartTime)
// uiuc_recorder(dt);
// fog field update
Fog = 0;
if (fog_field)
uiuc_fog();
double vis;
if (Fog != 0)
{
#ifndef FG_OLD_WEATHER
vis = WeatherDatabase->getWeatherVisibility();
if (Fog > 0)
vis /= 1.01;
else
vis *= 1.01;
WeatherDatabase->setWeatherVisibility( vis );
#else
vis = current_weather.get_visibility_m();
if (Fog > 0)
vis /= 1.01;
else
vis *= 1.01;
current_weather.set_visibility_m( vis );
#endif
}
/* Send data on the network to the Glass Cockpit */
// string input="";
// input += " stick_right " + ftoa(Lat_control);
// input += " rudder_left " + ftoa(-Rudder_pedal);
// input += " stick_forward " + ftoa(Long_control);
// input += " stick_trim_forward " + ftoa(Long_trim);
// input += " vehicle_pitch " + ftoa(Theta * 180.0 / 3.14);
// input += " vehicle_roll " + ftoa(Phi * 180.0 / 3.14);
// input += " vehicle_speed " + ftoa(V_rel_wind);
// input += " throttle_forward " + ftoa(Throttle_pct);
// input += " altitude " + ftoa(Altitude);
// input += " climb_rate " + ftoa(-1.0*V_down_rel_ground);
// testarray.getHello();
// testarray.sendData(input);
/* End of Networking */
}
void uiuc_engine_routine()
{
uiuc_engine();
}
void uiuc_gear_routine ()
{
uiuc_gear();
}
void uiuc_record_routine(double dt)
{
if (Simtime >= recordStartTime)
uiuc_recorder(dt);
}
//end uiuc_wrapper.cpp
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