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curt 1997-05-29 02:29:08 +00:00
parent 724e5d3d5e
commit 63f71f4f94
2 changed files with 0 additions and 147 deletions
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95
FDM/slew.c
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/**************************************************************************
* slew.c -- the "slew" flight model
*
* Written by Curtis Olson, started May 1997.
*
* Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
* (Log is kept at end of this file)
**************************************************************************/
#include <math.h>
#include "slew.h"
#include "flight.h"
#include "../aircraft/aircraft.h"
#include "../controls/controls.h"
#ifndef PI2
#define PI2 (M_PI + M_PI)
#endif
/* reset flight params to a specific position */
void slew_init(double pos_x, double pos_y, double pos_z, double heading) {
struct flight_params *f;
f = &current_aircraft.flight;
f->pos_x = pos_x;
f->pos_y = pos_y;
f->pos_z = pos_z;
f->vel_x = 0.0;
f->vel_y = 0.0;
f->vel_z = 0.0;
f->Phi = 0.0;
f->Theta = 0.0;
f->Psi = 0.0;
f->vel_Phi = 0.0;
f->vel_Theta = 0.0;
f->vel_Psi = 0.0;
f->Psi = heading;
}
/* update position based on inputs, positions, velocities, etc. */
void slew_update() {
struct flight_params *f;
struct control_params *c;
f = &current_aircraft.flight;
c = &current_aircraft.controls;
f->Psi += c->aileron;
if ( f->Psi > PI2 ) {
f->Psi -= PI2;
} else if ( f->Psi < 0 ) {
f->Psi += PI2;
}
f->vel_x = -c->elev;
f->pos_x = f->pos_x + (cos(f->Psi) * f->vel_x);
f->pos_y = f->pos_y + (sin(f->Psi) * f->vel_x);
}
/* $Log$
/* Revision 1.2 1997/05/23 15:40:37 curt
/* Added GNU copyright headers.
/*
* Revision 1.1 1997/05/16 16:04:45 curt
* Initial revision.
*
*/

52
FDM/slew.h
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/**************************************************************************
* slew.h -- the "slew" flight model
*
* Written by Curtis Olson, started May 1997.
*
* Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
* (Log is kept at end of this file)
**************************************************************************/
#ifndef SLEW_H
#define SLEW_H
#include "flight.h"
/* reset flight params to a specific position */
void slew_init(double pos_x, double pos_y, double pos_z, double heading);
/* update position based on inputs, positions, velocities, etc. */
void slew_update();
#endif SLEW_H
/* $Log$
/* Revision 1.2 1997/05/23 15:40:38 curt
/* Added GNU copyright headers.
/*
* Revision 1.1 1997/05/16 16:04:46 curt
* Initial revision.
*
*/