//
// Written by Curtis Olson, started May 1997.
//
-// Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
+// Copyright (C) 1997 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
//
// 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.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
-#include <stdio.h>
-
-#include <plib/sg.h>
+#include "flight.hxx"
#include <simgear/constants.h>
#include <simgear/debug/logstream.hxx>
-#include <simgear/math/sg_geodesy.hxx>
+#include <simgear/math/SGMath.hxx>
#include <simgear/timing/timestamp.hxx>
#include <Scenery/scenery.hxx>
-#include <FDM/LaRCsim/ls_interface.h>
#include <Main/globals.hxx>
#include <Main/fg_props.hxx>
+#include <FDM/groundcache.hxx>
-#include "flight.hxx"
+static inline void assign(double* ptr, const SGVec3d& vec)
+{
+ ptr[0] = vec[0];
+ ptr[1] = vec[1];
+ ptr[2] = vec[2];
+}
// base_fdm_state is the internal state that is updated in integer
// multiples of "dt". This leads to "jitter" with respect to the real
FGInterface *cur_fdm_state = 0;
FGInterface base_fdm_state;
-inline void init_vec(FG_VECTOR_3 vec) {
- vec[0] = 0.0; vec[1] = 0.0; vec[2] = 0.0;
-}
-
// Constructor
-FGInterface::FGInterface() {
+FGInterface::FGInterface()
+ : remainder(0)
+{
_setup();
}
-FGInterface::FGInterface( double dt ) {
+FGInterface::FGInterface( double dt )
+ : remainder(0)
+{
_setup();
- delta_t = dt;
- remainder = elapsed = multi_loop = 0;
}
// Destructor
}
+int
+FGInterface::_calc_multiloop (double dt)
+{
+ int hz = fgGetInt("/sim/model-hz");
+ int speedup = fgGetInt("/sim/speed-up");
+
+ dt += remainder;
+ remainder = 0;
+ double ml = dt * hz;
+ // Avoid roundoff problems by adding the roundoff itself.
+ // ... ok, two times the roundoff to have enough room.
+ int multiloop = int(floor(ml * (1.0 + 2.0*DBL_EPSILON)));
+ remainder = (ml - multiloop) / hz;
+
+ // If we artificially inflate ml above by a tiny amount to get the
+ // closest integer, then subtract the integer from the original
+ // slightly smaller value, we can get a negative remainder.
+ // Logically this should never happen, and we definitely don't want
+ // to carry a negative remainder over to the next iteration, so
+ // never let the remainder go below zero.
+ //
+ // Note: this fixes a problem where we run 1, 3, 1, 3, 1, 3... loops
+ // of the FDM when in fact we want to run 2, 2, 2, 2, 2...
+ if ( remainder < 0 ) { remainder = 0; }
+
+ return (multiloop * speedup);
+}
+
+
/**
* Set default values for the state of the FDM.
*
inited = false;
bound = false;
- init_vec( d_pilot_rp_body_v );
- init_vec( d_cg_rp_body_v );
- init_vec( f_body_total_v );
- init_vec( f_local_total_v );
- init_vec( f_aero_v );
- init_vec( f_engine_v );
- init_vec( f_gear_v );
- init_vec( m_total_rp_v );
- init_vec( m_total_cg_v );
- init_vec( m_aero_v );
- init_vec( m_engine_v );
- init_vec( m_gear_v );
- init_vec( v_dot_local_v );
- init_vec( v_dot_body_v );
- init_vec( a_cg_body_v );
- init_vec( a_pilot_body_v );
- init_vec( n_cg_body_v );
- init_vec( n_pilot_body_v );
- init_vec( omega_dot_body_v );
- init_vec( v_local_v );
- init_vec( v_local_rel_ground_v );
- init_vec( v_local_airmass_v );
- init_vec( v_local_rel_airmass_v );
- init_vec( v_local_gust_v );
- init_vec( v_wind_body_v );
- init_vec( omega_body_v );
- init_vec( omega_local_v );
- init_vec( omega_total_v );
- init_vec( euler_rates_v );
- init_vec( geocentric_rates_v );
- init_vec( geocentric_position_v );
- init_vec( geodetic_position_v );
- init_vec( euler_angles_v );
- init_vec( d_cg_rwy_local_v );
- init_vec( d_cg_rwy_rwy_v );
- init_vec( d_pilot_rwy_local_v );
- init_vec( d_pilot_rwy_rwy_v );
- init_vec( t_local_to_body_m[0] );
- init_vec( t_local_to_body_m[1] );
- init_vec( t_local_to_body_m[2] );
-
- mass=i_xx=i_yy=i_zz=i_xz=0;
+ d_cg_rp_body_v = SGVec3d::zeros();
+ v_dot_local_v = SGVec3d::zeros();
+ v_dot_body_v = SGVec3d::zeros();
+ a_cg_body_v = SGVec3d::zeros();
+ a_pilot_body_v = SGVec3d::zeros();
+ n_cg_body_v = SGVec3d::zeros();
+ v_local_v = SGVec3d::zeros();
+ v_local_rel_ground_v = SGVec3d::zeros();
+ v_local_airmass_v = SGVec3d::zeros();
+ v_wind_body_v = SGVec3d::zeros();
+ omega_body_v = SGVec3d::zeros();
+ euler_rates_v = SGVec3d::zeros();
+ geocentric_rates_v = SGVec3d::zeros();
+ geodetic_position_v = SGGeod::fromRadM(0, 0, 0);
+ cartesian_position_v = SGVec3d::fromGeod(geodetic_position_v);
+ geocentric_position_v = SGGeoc::fromCart(cartesian_position_v);
+ euler_angles_v = SGVec3d::zeros();
+
nlf=0;
- v_rel_wind=v_true_kts=v_rel_ground=v_inertial=0;
- v_ground_speed=v_equiv=v_equiv_kts=0;
- v_calibrated=v_calibrated_kts=0;
- gravity=0;
- centrifugal_relief=0;
- alpha=beta=alpha_dot=beta_dot=0;
- cos_alpha=sin_alpha=cos_beta=sin_beta=0;
- cos_phi=sin_phi=cos_theta=sin_theta=cos_psi=sin_psi=0;
- gamma_vert_rad=gamma_horiz_rad=0;
- sigma=density=v_sound=mach_number=0;
- static_pressure=total_pressure=impact_pressure=0;
+ v_rel_wind=v_true_kts=0;
+ v_ground_speed=v_equiv_kts=0;
+ v_calibrated_kts=0;
+ alpha=beta=0;
+ gamma_vert_rad=0;
+ density=mach_number=0;
+ static_pressure=total_pressure=0;
dynamic_pressure=0;
static_temperature=total_temperature=0;
sea_level_radius=earth_position_angle=0;
- runway_altitude=runway_latitude=runway_longitude=0;
- runway_heading=0;
- radius_to_rwy=0;
+ runway_altitude=0;
climb_rate=0;
- sin_lat_geocentric=cos_lat_geocentric=0;
- sin_latitude=cos_latitude=0;
- sin_longitude=cos_longitude=0;
altitude_agl=0;
}
set_inited( true );
- stamp();
- set_remainder( 0 );
+ ground_cache.set_cache_time_offset(globals->get_sim_time_sec());
+
+// stamp();
+// set_remainder( 0 );
// Set initial position
SG_LOG( SG_FLIGHT, SG_INFO, "...initializing position..." );
- set_Longitude( fgGetDouble("/position/longitude-deg")
- * SGD_DEGREES_TO_RADIANS );
- set_Latitude( fgGetDouble("/position/latitude-deg")
- * SGD_DEGREES_TO_RADIANS );
- double ground_elev_m = scenery.get_cur_elev();
+ double lon = fgGetDouble("/sim/presets/longitude-deg")
+ * SGD_DEGREES_TO_RADIANS;
+ double lat = fgGetDouble("/sim/presets/latitude-deg")
+ * SGD_DEGREES_TO_RADIANS;
+ double alt_ft = fgGetDouble("/sim/presets/altitude-ft");
+ double alt_m = alt_ft * SG_FEET_TO_METER;
+ set_Longitude( lon );
+ set_Latitude( lat );
+ SG_LOG( SG_FLIGHT, SG_INFO, "Checking for lon = "
+ << lon*SGD_RADIANS_TO_DEGREES << "deg, lat = "
+ << lat*SGD_RADIANS_TO_DEGREES << "deg, alt = "
+ << alt_ft << "ft");
+
+ double ground_elev_m = get_groundlevel_m(lat, lon, alt_m);
double ground_elev_ft = ground_elev_m * SG_METER_TO_FEET;
- if ( fgGetBool("/sim/startup/onground")
- || fgGetDouble("/position/altitude-ft") < ground_elev_ft ) {
- fgSetDouble("/position/altitude-ft", ground_elev_ft);
+ _set_Runway_altitude ( ground_elev_ft );
+ if ( fgGetBool("/sim/presets/onground") || alt_ft < ground_elev_ft ) {
+ fgSetDouble("/position/altitude-ft", ground_elev_ft + 0.1);
+ set_Altitude( ground_elev_ft + 0.1);
+ } else {
+ set_Altitude( alt_ft );
}
- set_Altitude( fgGetDouble("/position/altitude-ft") );
// Set ground elevation
SG_LOG( SG_FLIGHT, SG_INFO,
// Set sea-level radius
SG_LOG( SG_FLIGHT, SG_INFO, "...initializing sea-level radius..." );
SG_LOG( SG_FLIGHT, SG_INFO, " lat = "
- << fgGetDouble("/position/latitude-deg")
- << " alt = " << fgGetDouble("/position/altitude-ft") );
- double sea_level_radius_meters;
- double lat_geoc;
- sgGeodToGeoc( fgGetDouble("/position/latitude-deg")
- * SGD_DEGREES_TO_RADIANS,
- fgGetDouble("/position/altitude-ft") * SG_FEET_TO_METER,
- &sea_level_radius_meters, &lat_geoc );
- _set_Sea_level_radius( sea_level_radius_meters * SG_METER_TO_FEET );
+ << fgGetDouble("/sim/presets/latitude-deg")
+ << " alt = " << get_Altitude() );
+ double slr = SGGeodesy::SGGeodToSeaLevelRadius(geodetic_position_v);
+ _set_Sea_level_radius( slr * SG_METER_TO_FEET );
// Set initial velocities
SG_LOG( SG_FLIGHT, SG_INFO, "...initializing velocities..." );
- if ( !fgHasNode("/sim/startup/speed-set") ) {
+ if ( !fgHasNode("/sim/presets/speed-set") ) {
set_V_calibrated_kts(0.0);
} else {
- const string speedset = fgGetString("/sim/startup/speed-set");
+ const string speedset = fgGetString("/sim/presets/speed-set");
if ( speedset == "knots" || speedset == "KNOTS" ) {
- set_V_calibrated_kts( fgGetDouble("/velocities/airspeed-kt") );
+ set_V_calibrated_kts( fgGetDouble("/sim/presets/airspeed-kt") );
} else if ( speedset == "mach" || speedset == "MACH" ) {
- set_Mach_number( fgGetDouble("/velocities/mach") );
+ set_Mach_number( fgGetDouble("/sim/presets/mach") );
} else if ( speedset == "UVW" || speedset == "uvw" ) {
set_Velocities_Wind_Body(
- fgGetDouble("/velocities/uBody-fps"),
- fgGetDouble("/velocities/vBody-fps"),
- fgGetDouble("/velocities/wBody-fps") );
+ fgGetDouble("/sim/presets/uBody-fps"),
+ fgGetDouble("/sim/presets/vBody-fps"),
+ fgGetDouble("/sim/presets/wBody-fps") );
} else if ( speedset == "NED" || speedset == "ned" ) {
set_Velocities_Local(
- fgGetDouble("/velocities/speed-north-fps"),
- fgGetDouble("/velocities/speed-east-fps"),
- fgGetDouble("/velocities/speed-down-fps") );
+ fgGetDouble("/sim/presets/speed-north-fps"),
+ fgGetDouble("/sim/presets/speed-east-fps"),
+ fgGetDouble("/sim/presets/speed-down-fps") );
} else {
SG_LOG( SG_FLIGHT, SG_ALERT,
- "Unrecognized value for /sim/startup/speed-set: "
+ "Unrecognized value for /sim/presets/speed-set: "
<< speedset);
set_V_calibrated_kts( 0.0 );
}
// Set initial Euler angles
SG_LOG( SG_FLIGHT, SG_INFO, "...initializing Euler angles..." );
- set_Euler_Angles( fgGetDouble("/orientation/roll-deg")
+ set_Euler_Angles( fgGetDouble("/sim/presets/roll-deg")
* SGD_DEGREES_TO_RADIANS,
- fgGetDouble("/orientation/pitch-deg")
+ fgGetDouble("/sim/presets/pitch-deg")
* SGD_DEGREES_TO_RADIANS,
- fgGetDouble("/orientation/heading-deg")
+ fgGetDouble("/sim/presets/heading-deg")
* SGD_DEGREES_TO_RADIANS );
SG_LOG( SG_FLIGHT, SG_INFO, "End common FDM init" );
bound = true;
// Time management (read-only)
- fgTie("/fdm/time/delta_t", this,
- &FGInterface::get_delta_t); // read-only
- fgTie("/fdm/time/elapsed", this,
- &FGInterface::get_elapsed); // read-only
- fgTie("/fdm/time/remainder", this,
- &FGInterface::get_remainder); // read-only
- fgTie("/fdm/time/multi_loop", this,
- &FGInterface::get_multi_loop); // read-only
+// fgTie("/fdm/time/delta_t", this,
+// &FGInterface::get_delta_t); // read-only
+// fgTie("/fdm/time/elapsed", this,
+// &FGInterface::get_elapsed); // read-only
+// fgTie("/fdm/time/remainder", this,
+// &FGInterface::get_remainder); // read-only
+// fgTie("/fdm/time/multi_loop", this,
+// &FGInterface::get_multi_loop); // read-only
// Aircraft position
fgTie("/position/latitude-deg", this,
fgSetArchivable("/position/altitude-ft");
fgTie("/position/altitude-agl-ft", this,
&FGInterface::get_Altitude_AGL); // read-only
+ fgSetArchivable("/position/ground-elev-ft");
+ fgTie("/position/ground-elev-ft", this,
+ &FGInterface::get_Runway_altitude); // read-only
+ fgSetArchivable("/position/ground-elev-m");
+ fgTie("/position/ground-elev-m", this,
+ &FGInterface::get_Runway_altitude_m); // read-only
+ fgTie("/environment/ground-elevation-m", this,
+ &FGInterface::get_Runway_altitude_m); // read-only
+ fgSetArchivable("/position/sea-level-radius-ft");
+ fgTie("/position/sea-level-radius-ft", this,
+ &FGInterface::get_Sea_level_radius); // read-only
// Orientation
fgTie("/orientation/roll-deg", this,
&FGInterface::set_Psi_deg);
fgSetArchivable("/orientation/heading-deg");
+ // Body-axis "euler rates" (rotation speed, but in a funny
+ // representation).
+ fgTie("/orientation/roll-rate-degps", this,
+ &FGInterface::get_Phi_dot_degps);
+ fgTie("/orientation/pitch-rate-degps", this,
+ &FGInterface::get_Theta_dot_degps);
+ fgTie("/orientation/yaw-rate-degps", this,
+ &FGInterface::get_Psi_dot_degps);
+
+ // Ground speed knots
+ fgTie("/velocities/groundspeed-kt", this,
+ &FGInterface::get_V_ground_speed_kt);
+
// Calibrated airspeed
fgTie("/velocities/airspeed-kt", this,
&FGInterface::get_V_calibrated_kts,
&FGInterface::set_V_calibrated_kts,
+ false);
+
+ // Mach number
+ fgTie("/velocities/mach", this,
+ &FGInterface::get_Mach_number,
+ &FGInterface::set_Mach_number,
false);
// Local velocities
fgTie("/velocities/glideslope", this,
&FGInterface::get_Gamma_vert_rad,
&FGInterface::set_Gamma_vert_rad );
- fgTie("/velocities/side-slip-rad", this,
+ fgTie("/orientation/side-slip-rad", this,
&FGInterface::get_Beta); // read-only
- fgTie("/velocities/side-slip-deg", this,
+ fgTie("/orientation/side-slip-deg", this,
&FGInterface::get_Beta_deg); // read-only
- fgTie("/velocities/alpha-deg", this,
+ fgTie("/orientation/alpha-deg", this,
&FGInterface::get_Alpha_deg); // read-only
fgTie("/accelerations/nlf", this,
&FGInterface::get_Nlf); // read-only
+
+ // NED accelerations
+ fgTie("/accelerations/ned/north-accel-fps_sec",
+ this, &FGInterface::get_V_dot_north);
+ fgTie("/accelerations/ned/east-accel-fps_sec",
+ this, &FGInterface::get_V_dot_east);
+ fgTie("/accelerations/ned/down-accel-fps_sec",
+ this, &FGInterface::get_V_dot_down);
+
+ // Pilot accelerations
+ fgTie("/accelerations/pilot/x-accel-fps_sec",
+ this, &FGInterface::get_A_X_pilot);
+ fgTie("/accelerations/pilot/y-accel-fps_sec",
+ this, &FGInterface::get_A_Y_pilot);
+ fgTie("/accelerations/pilot/z-accel-fps_sec",
+ this, &FGInterface::get_A_Z_pilot);
+
}
{
bound = false;
- fgUntie("/fdm/time/delta_t");
- fgUntie("/fdm/time/elapsed");
- fgUntie("/fdm/time/remainder");
- fgUntie("/fdm/time/multi_loop");
+ // fgUntie("/fdm/time/delta_t");
+ // fgUntie("/fdm/time/elapsed");
+ // fgUntie("/fdm/time/remainder");
+ // fgUntie("/fdm/time/multi_loop");
fgUntie("/position/latitude-deg");
fgUntie("/position/longitude-deg");
fgUntie("/position/altitude-ft");
fgUntie("/position/altitude-agl-ft");
- fgUntie("/orientation/heading-deg");
- fgUntie("/orientation/pitch-deg");
+ fgUntie("/position/ground-elev-ft");
+ fgUntie("/position/ground-elev-m");
+ fgUntie("/environment/ground-elevation-m");
+ fgUntie("/position/sea-level-radius-ft");
fgUntie("/orientation/roll-deg");
+ fgUntie("/orientation/pitch-deg");
+ fgUntie("/orientation/heading-deg");
+ fgUntie("/orientation/roll-rate-degps");
+ fgUntie("/orientation/pitch-rate-degps");
+ fgUntie("/orientation/yaw-rate-degps");
+ fgUntie("/orientation/side-slip-rad");
+ fgUntie("/orientation/side-slip-deg");
+ fgUntie("/orientation/alpha-deg");
fgUntie("/velocities/airspeed-kt");
+ fgUntie("/velocities/groundspeed-kt");
+ fgUntie("/velocities/mach");
fgUntie("/velocities/speed-north-fps");
fgUntie("/velocities/speed-east-fps");
fgUntie("/velocities/speed-down-fps");
fgUntie("/velocities/wBody-fps");
fgUntie("/velocities/vertical-speed-fps");
fgUntie("/velocities/glideslope");
- fgUntie("/velocities/side-slip-rad");
- fgUntie("/velocities/side-slip-deg");
- fgUntie("/velocities/alpha-deg");
fgUntie("/accelerations/nlf");
-
+ fgUntie("/accelerations/pilot/x-accel-fps_sec");
+ fgUntie("/accelerations/pilot/y-accel-fps_sec");
+ fgUntie("/accelerations/pilot/z-accel-fps_sec");
+ fgUntie("/accelerations/ned/north-accel-fps_sec");
+ fgUntie("/accelerations/ned/east-accel-fps_sec");
+ fgUntie("/accelerations/ned/down-accel-fps_sec");
}
/**
* Update the state of the FDM (i.e. run the equations of motion).
*/
void
-FGInterface::update (int dt)
+FGInterface::update (double dt)
{
- cout << "dummy update() ... SHOULDN'T BE CALLED!" << endl;
+ SG_LOG(SG_FLIGHT, SG_ALERT, "dummy update() ... SHOULDN'T BE CALLED!");
}
-void FGInterface::_updateGeodeticPosition( double lat, double lon, double alt )
+void FGInterface::_updatePositionM(const SGVec3d& cartPos)
{
- double lat_geoc, sl_radius;
-
- // cout << "starting sea level rad = " << get_Sea_level_radius() << endl;
-
- sgGeodToGeoc( lat, alt * SG_FEET_TO_METER, &sl_radius, &lat_geoc );
-
- SG_LOG( SG_FLIGHT, SG_DEBUG, "lon = " << lon
- << " lat_geod = " << lat
- << " lat_geoc = " << lat_geoc
- << " alt = " << alt
- << " sl_radius = " << sl_radius * SG_METER_TO_FEET
- << " Equator = " << SG_EQUATORIAL_RADIUS_FT );
+ cartesian_position_v = cartPos;
+ geodetic_position_v = SGGeod::fromCart(cartesian_position_v);
+ geocentric_position_v = SGGeoc::fromCart(cartesian_position_v);
+ _set_Sea_level_radius( SGGeodesy::SGGeodToSeaLevelRadius(geodetic_position_v)*SG_METER_TO_FEET );
+ _update_ground_elev_at_pos();
+}
- _set_Geocentric_Position( lat_geoc, lon,
- sl_radius * SG_METER_TO_FEET + alt );
-
- _set_Geodetic_Position( lat, lon, alt );
- _set_Sea_level_radius( sl_radius * SG_METER_TO_FEET );
- _set_Runway_altitude( scenery.get_cur_elev() * SG_METER_TO_FEET );
+void FGInterface::_updatePosition(const SGGeod& geod)
+{
+ geodetic_position_v = geod;
+ cartesian_position_v = SGVec3d::fromGeod(geodetic_position_v);
+ geocentric_position_v = SGGeoc::fromCart(cartesian_position_v);
- _set_sin_lat_geocentric( lat_geoc );
- _set_cos_lat_geocentric( lat_geoc );
+ _set_Sea_level_radius( SGGeodesy::SGGeodToSeaLevelRadius(geodetic_position_v)*SG_METER_TO_FEET );
+ _update_ground_elev_at_pos();
+}
- _set_sin_cos_longitude( lon );
- _set_sin_cos_latitude( lat );
+void FGInterface::_updatePosition(const SGGeoc& geoc)
+{
+ geocentric_position_v = geoc;
+ cartesian_position_v = SGVec3d::fromGeoc(geocentric_position_v);
+ geodetic_position_v = SGGeod::fromCart(cartesian_position_v);
- /* Norman's code for slope of the terrain */
- /* needs to be tested -- get it on the HUD and taxi around */
- /* double *tnorm = scenery.cur_normal;
+ _set_Sea_level_radius( SGGeodesy::SGGeodToSeaLevelRadius(geodetic_position_v)*SG_METER_TO_FEET );
+ _update_ground_elev_at_pos();
+}
- double sy = sin ( -get_Psi() ) ;
- double cy = cos ( -get_Psi() ) ;
- double phitb, thetatb, psitb;
- if ( tnorm[1] != 0.0 ) {
- psitb = -atan2 ( tnorm[0], tnorm[1] );
- }
- if ( tnorm[2] != 0.0 ) {
- thetatb = atan2 ( tnorm[0] * cy - tnorm[1] * sy, tnorm[2] );
- phitb = -atan2 ( tnorm[1] * cy + tnorm[0] * sy, tnorm[2] );
- }
-
- _set_terrain_slope(phitb, thetatb, psitb)
- */
+void FGInterface::_updateGeodeticPosition( double lat, double lon, double alt )
+{
+ _updatePosition(SGGeod::fromRadFt(lon, lat, alt));
}
-void FGInterface::_updateGeocentricPosition( double lat_geoc, double lon,
+void FGInterface::_updateGeocentricPosition( double lat, double lon,
double alt )
{
- double lat_geod, tmp_alt, sl_radius1, sl_radius2, tmp_lat_geoc;
-
- // cout << "starting sea level rad = " << get_Sea_level_radius() << endl;
-
- sgGeocToGeod( lat_geoc, ( get_Sea_level_radius() + alt ) * SG_FEET_TO_METER,
- &lat_geod, &tmp_alt, &sl_radius1 );
- sgGeodToGeoc( lat_geod, alt * SG_FEET_TO_METER, &sl_radius2, &tmp_lat_geoc );
-
- SG_LOG( SG_FLIGHT, SG_DEBUG, "lon = " << lon
- << " lat_geod = " << lat_geod
- << " lat_geoc = " << lat_geoc
- << " alt = " << alt
- << " tmp_alt = " << tmp_alt * SG_METER_TO_FEET
- << " sl_radius1 = " << sl_radius1 * SG_METER_TO_FEET
- << " sl_radius2 = " << sl_radius2 * SG_METER_TO_FEET
- << " Equator = " << SG_EQUATORIAL_RADIUS_FT );
-
- _set_Geocentric_Position( lat_geoc, lon,
- sl_radius2 * SG_METER_TO_FEET + alt );
-
- _set_Geodetic_Position( lat_geod, lon, alt );
-
- _set_Sea_level_radius( sl_radius2 * SG_METER_TO_FEET );
- _set_Runway_altitude( scenery.get_cur_elev() * SG_METER_TO_FEET );
-
- _set_sin_lat_geocentric( lat_geoc );
- _set_cos_lat_geocentric( lat_geoc );
-
- _set_sin_cos_longitude( lon );
-
- _set_sin_cos_latitude( lat_geod );
-
- /* Norman's code for slope of the terrain */
- /* needs to be tested -- get it on the HUD and taxi around */
- /* double *tnorm = scenery.cur_normal;
-
- double sy = sin ( -get_Psi() ) ;
- double cy = cos ( -get_Psi() ) ;
-
- double phitb, thetatb, psitb;
- if ( tnorm[1] != 0.0 ) {
- psitb = -atan2 ( tnorm[0], tnorm[1] );
- }
- if ( tnorm[2] != 0.0 ) {
- thetatb = atan2 ( tnorm[0] * cy - tnorm[1] * sy, tnorm[2] );
- phitb = -atan2 ( tnorm[1] * cy + tnorm[0] * sy, tnorm[2] );
- }
-
- _set_terrain_slope(phitb, thetatb, psitb)
- */
+ _updatePosition(SGGeoc::fromRadFt(lon, lat, get_Sea_level_radius() + alt));
}
-
-// Extrapolate fdm based on time_offset (in usec)
-void FGInterface::extrapolate( int time_offset ) {
- double dt = time_offset / 1000000.0;
-
- // -dw- metrowerks complains about ambiguous access, not critical
- // to keep this ;)
-#ifndef __MWERKS__
- cout << "extrapolating FDM by dt = " << dt << endl;
-#endif
-
- double lat = geodetic_position_v[0] + geocentric_rates_v[0] * dt;
- double lat_geoc = geocentric_position_v[0] + geocentric_rates_v[0] * dt;
-
- double lon = geodetic_position_v[1] + geocentric_rates_v[1] * dt;
- double lon_geoc = geocentric_position_v[1] + geocentric_rates_v[1] * dt;
-
- double alt = geodetic_position_v[2] + geocentric_rates_v[2] * dt;
- double radius = geocentric_position_v[2] + geocentric_rates_v[2] * dt;
-
- geodetic_position_v[0] = lat;
- geocentric_position_v[0] = lat_geoc;
-
- geodetic_position_v[1] = lon;
- geocentric_position_v[1] = lon_geoc;
-
- geodetic_position_v[2] = alt;
- geocentric_position_v[2] = radius;
+void FGInterface::_update_ground_elev_at_pos( void ) {
+ double groundlevel_m = get_groundlevel_m(geodetic_position_v);
+ _set_Runway_altitude( groundlevel_m * SG_METER_TO_FEET );
}
// Positions
void FGInterface::set_Latitude(double lat) {
- geodetic_position_v[0] = lat;
+ geodetic_position_v.setLatitudeRad(lat);
}
void FGInterface::set_Longitude(double lon) {
- geodetic_position_v[1] = lon;
+ geodetic_position_v.setLongitudeRad(lon);
}
void FGInterface::set_Altitude(double alt) {
- geodetic_position_v[2] = alt;
+ geodetic_position_v.setElevationFt(alt);
}
void FGInterface::set_AltitudeAGL(double altagl) {
void FGInterface::_busdump(void) {
- SG_LOG(SG_FLIGHT,SG_INFO,"d_pilot_rp_body_v[3]: " << d_pilot_rp_body_v[0] << ", " << d_pilot_rp_body_v[1] << ", " << d_pilot_rp_body_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"d_cg_rp_body_v[3]: " << d_cg_rp_body_v[0] << ", " << d_cg_rp_body_v[1] << ", " << d_cg_rp_body_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"f_body_total_v[3]: " << f_body_total_v[0] << ", " << f_body_total_v[1] << ", " << f_body_total_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"f_local_total_v[3]: " << f_local_total_v[0] << ", " << f_local_total_v[1] << ", " << f_local_total_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"f_aero_v[3]: " << f_aero_v[0] << ", " << f_aero_v[1] << ", " << f_aero_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"f_engine_v[3]: " << f_engine_v[0] << ", " << f_engine_v[1] << ", " << f_engine_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"f_gear_v[3]: " << f_gear_v[0] << ", " << f_gear_v[1] << ", " << f_gear_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"m_total_rp_v[3]: " << m_total_rp_v[0] << ", " << m_total_rp_v[1] << ", " << m_total_rp_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"m_total_cg_v[3]: " << m_total_cg_v[0] << ", " << m_total_cg_v[1] << ", " << m_total_cg_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"m_aero_v[3]: " << m_aero_v[0] << ", " << m_aero_v[1] << ", " << m_aero_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"m_engine_v[3]: " << m_engine_v[0] << ", " << m_engine_v[1] << ", " << m_engine_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"m_gear_v[3]: " << m_gear_v[0] << ", " << m_gear_v[1] << ", " << m_gear_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"v_dot_local_v[3]: " << v_dot_local_v[0] << ", " << v_dot_local_v[1] << ", " << v_dot_local_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"v_dot_body_v[3]: " << v_dot_body_v[0] << ", " << v_dot_body_v[1] << ", " << v_dot_body_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"a_cg_body_v[3]: " << a_cg_body_v[0] << ", " << a_cg_body_v[1] << ", " << a_cg_body_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"a_pilot_body_v[3]: " << a_pilot_body_v[0] << ", " << a_pilot_body_v[1] << ", " << a_pilot_body_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"n_cg_body_v[3]: " << n_cg_body_v[0] << ", " << n_cg_body_v[1] << ", " << n_cg_body_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"n_pilot_body_v[3]: " << n_pilot_body_v[0] << ", " << n_pilot_body_v[1] << ", " << n_pilot_body_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"omega_dot_body_v[3]: " << omega_dot_body_v[0] << ", " << omega_dot_body_v[1] << ", " << omega_dot_body_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"v_local_v[3]: " << v_local_v[0] << ", " << v_local_v[1] << ", " << v_local_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"v_local_rel_ground_v[3]: " << v_local_rel_ground_v[0] << ", " << v_local_rel_ground_v[1] << ", " << v_local_rel_ground_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"v_local_airmass_v[3]: " << v_local_airmass_v[0] << ", " << v_local_airmass_v[1] << ", " << v_local_airmass_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"v_local_rel_airmass_v[3]: " << v_local_rel_airmass_v[0] << ", " << v_local_rel_airmass_v[1] << ", " << v_local_rel_airmass_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"v_local_gust_v[3]: " << v_local_gust_v[0] << ", " << v_local_gust_v[1] << ", " << v_local_gust_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"v_wind_body_v[3]: " << v_wind_body_v[0] << ", " << v_wind_body_v[1] << ", " << v_wind_body_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"omega_body_v[3]: " << omega_body_v[0] << ", " << omega_body_v[1] << ", " << omega_body_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"omega_local_v[3]: " << omega_local_v[0] << ", " << omega_local_v[1] << ", " << omega_local_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"omega_total_v[3]: " << omega_total_v[0] << ", " << omega_total_v[1] << ", " << omega_total_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"euler_rates_v[3]: " << euler_rates_v[0] << ", " << euler_rates_v[1] << ", " << euler_rates_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"geocentric_rates_v[3]: " << geocentric_rates_v[0] << ", " << geocentric_rates_v[1] << ", " << geocentric_rates_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"geocentric_position_v[3]: " << geocentric_position_v[0] << ", " << geocentric_position_v[1] << ", " << geocentric_position_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"geodetic_position_v[3]: " << geodetic_position_v[0] << ", " << geodetic_position_v[1] << ", " << geodetic_position_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"euler_angles_v[3]: " << euler_angles_v[0] << ", " << euler_angles_v[1] << ", " << euler_angles_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"d_cg_rwy_local_v[3]: " << d_cg_rwy_local_v[0] << ", " << d_cg_rwy_local_v[1] << ", " << d_cg_rwy_local_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"d_cg_rwy_rwy_v[3]: " << d_cg_rwy_rwy_v[0] << ", " << d_cg_rwy_rwy_v[1] << ", " << d_cg_rwy_rwy_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"d_pilot_rwy_local_v[3]: " << d_pilot_rwy_local_v[0] << ", " << d_pilot_rwy_local_v[1] << ", " << d_pilot_rwy_local_v[2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"d_pilot_rwy_rwy_v[3]: " << d_pilot_rwy_rwy_v[0] << ", " << d_pilot_rwy_rwy_v[1] << ", " << d_pilot_rwy_rwy_v[2]);
-
- SG_LOG(SG_FLIGHT,SG_INFO,"t_local_to_body_m[0][3]: " << t_local_to_body_m[0][0] << ", " << t_local_to_body_m[0][1] << ", " << t_local_to_body_m[0][2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"t_local_to_body_m[1][3]: " << t_local_to_body_m[1][0] << ", " << t_local_to_body_m[1][1] << ", " << t_local_to_body_m[1][2]);
- SG_LOG(SG_FLIGHT,SG_INFO,"t_local_to_body_m[2][3]: " << t_local_to_body_m[2][0] << ", " << t_local_to_body_m[2][1] << ", " << t_local_to_body_m[2][2]);
-
- SG_LOG(SG_FLIGHT,SG_INFO,"mass: " << mass );
- SG_LOG(SG_FLIGHT,SG_INFO,"i_xx: " << i_xx );
- SG_LOG(SG_FLIGHT,SG_INFO,"i_yy: " << i_yy );
- SG_LOG(SG_FLIGHT,SG_INFO,"i_zz: " << i_zz );
- SG_LOG(SG_FLIGHT,SG_INFO,"i_xz: " << i_xz );
+ SG_LOG(SG_FLIGHT,SG_INFO,"d_cg_rp_body_v: " << d_cg_rp_body_v);
+ SG_LOG(SG_FLIGHT,SG_INFO,"v_dot_local_v: " << v_dot_local_v);
+ SG_LOG(SG_FLIGHT,SG_INFO,"v_dot_body_v: " << v_dot_body_v);
+ SG_LOG(SG_FLIGHT,SG_INFO,"a_cg_body_v: " << a_cg_body_v);
+ SG_LOG(SG_FLIGHT,SG_INFO,"a_pilot_body_v: " << a_pilot_body_v);
+ SG_LOG(SG_FLIGHT,SG_INFO,"n_cg_body_v: " << n_cg_body_v);
+ SG_LOG(SG_FLIGHT,SG_INFO,"v_local_v: " << v_local_v);
+ SG_LOG(SG_FLIGHT,SG_INFO,"v_local_rel_ground_v: " << v_local_rel_ground_v);
+ SG_LOG(SG_FLIGHT,SG_INFO,"v_local_airmass_v: " << v_local_airmass_v);
+ SG_LOG(SG_FLIGHT,SG_INFO,"v_wind_body_v: " << v_wind_body_v);
+ SG_LOG(SG_FLIGHT,SG_INFO,"omega_body_v: " << omega_body_v);
+ SG_LOG(SG_FLIGHT,SG_INFO,"euler_rates_v: " << euler_rates_v);
+ SG_LOG(SG_FLIGHT,SG_INFO,"geocentric_rates_v: " << geocentric_rates_v);
+ SG_LOG(SG_FLIGHT,SG_INFO,"geocentric_position_v: " << geocentric_position_v);
+ SG_LOG(SG_FLIGHT,SG_INFO,"geodetic_position_v: " << geodetic_position_v);
+ SG_LOG(SG_FLIGHT,SG_INFO,"euler_angles_v: " << euler_angles_v);
+
SG_LOG(SG_FLIGHT,SG_INFO,"nlf: " << nlf );
SG_LOG(SG_FLIGHT,SG_INFO,"v_rel_wind: " << v_rel_wind );
SG_LOG(SG_FLIGHT,SG_INFO,"v_true_kts: " << v_true_kts );
- SG_LOG(SG_FLIGHT,SG_INFO,"v_rel_ground: " << v_rel_ground );
- SG_LOG(SG_FLIGHT,SG_INFO,"v_inertial: " << v_inertial );
SG_LOG(SG_FLIGHT,SG_INFO,"v_ground_speed: " << v_ground_speed );
- SG_LOG(SG_FLIGHT,SG_INFO,"v_equiv: " << v_equiv );
SG_LOG(SG_FLIGHT,SG_INFO,"v_equiv_kts: " << v_equiv_kts );
- SG_LOG(SG_FLIGHT,SG_INFO,"v_calibrated: " << v_calibrated );
SG_LOG(SG_FLIGHT,SG_INFO,"v_calibrated_kts: " << v_calibrated_kts );
- SG_LOG(SG_FLIGHT,SG_INFO,"gravity: " << gravity );
- SG_LOG(SG_FLIGHT,SG_INFO,"centrifugal_relief: " << centrifugal_relief );
SG_LOG(SG_FLIGHT,SG_INFO,"alpha: " << alpha );
SG_LOG(SG_FLIGHT,SG_INFO,"beta: " << beta );
- SG_LOG(SG_FLIGHT,SG_INFO,"alpha_dot: " << alpha_dot );
- SG_LOG(SG_FLIGHT,SG_INFO,"beta_dot: " << beta_dot );
- SG_LOG(SG_FLIGHT,SG_INFO,"cos_alpha: " << cos_alpha );
- SG_LOG(SG_FLIGHT,SG_INFO,"sin_alpha: " << sin_alpha );
- SG_LOG(SG_FLIGHT,SG_INFO,"cos_beta: " << cos_beta );
- SG_LOG(SG_FLIGHT,SG_INFO,"sin_beta: " << sin_beta );
- SG_LOG(SG_FLIGHT,SG_INFO,"cos_phi: " << cos_phi );
- SG_LOG(SG_FLIGHT,SG_INFO,"sin_phi: " << sin_phi );
- SG_LOG(SG_FLIGHT,SG_INFO,"cos_theta: " << cos_theta );
- SG_LOG(SG_FLIGHT,SG_INFO,"sin_theta: " << sin_theta );
- SG_LOG(SG_FLIGHT,SG_INFO,"cos_psi: " << cos_psi );
- SG_LOG(SG_FLIGHT,SG_INFO,"sin_psi: " << sin_psi );
SG_LOG(SG_FLIGHT,SG_INFO,"gamma_vert_rad: " << gamma_vert_rad );
- SG_LOG(SG_FLIGHT,SG_INFO,"gamma_horiz_rad: " << gamma_horiz_rad );
- SG_LOG(SG_FLIGHT,SG_INFO,"sigma: " << sigma );
SG_LOG(SG_FLIGHT,SG_INFO,"density: " << density );
- SG_LOG(SG_FLIGHT,SG_INFO,"v_sound: " << v_sound );
SG_LOG(SG_FLIGHT,SG_INFO,"mach_number: " << mach_number );
SG_LOG(SG_FLIGHT,SG_INFO,"static_pressure: " << static_pressure );
SG_LOG(SG_FLIGHT,SG_INFO,"total_pressure: " << total_pressure );
- SG_LOG(SG_FLIGHT,SG_INFO,"impact_pressure: " << impact_pressure );
SG_LOG(SG_FLIGHT,SG_INFO,"dynamic_pressure: " << dynamic_pressure );
SG_LOG(SG_FLIGHT,SG_INFO,"static_temperature: " << static_temperature );
SG_LOG(SG_FLIGHT,SG_INFO,"total_temperature: " << total_temperature );
SG_LOG(SG_FLIGHT,SG_INFO,"sea_level_radius: " << sea_level_radius );
SG_LOG(SG_FLIGHT,SG_INFO,"earth_position_angle: " << earth_position_angle );
SG_LOG(SG_FLIGHT,SG_INFO,"runway_altitude: " << runway_altitude );
- SG_LOG(SG_FLIGHT,SG_INFO,"runway_latitude: " << runway_latitude );
- SG_LOG(SG_FLIGHT,SG_INFO,"runway_longitude: " << runway_longitude );
- SG_LOG(SG_FLIGHT,SG_INFO,"runway_heading: " << runway_heading );
- SG_LOG(SG_FLIGHT,SG_INFO,"radius_to_rwy: " << radius_to_rwy );
SG_LOG(SG_FLIGHT,SG_INFO,"climb_rate: " << climb_rate );
- SG_LOG(SG_FLIGHT,SG_INFO,"sin_lat_geocentric: " << sin_lat_geocentric );
- SG_LOG(SG_FLIGHT,SG_INFO,"cos_lat_geocentric: " << cos_lat_geocentric );
- SG_LOG(SG_FLIGHT,SG_INFO,"sin_longitude: " << sin_longitude );
- SG_LOG(SG_FLIGHT,SG_INFO,"cos_longitude: " << cos_longitude );
- SG_LOG(SG_FLIGHT,SG_INFO,"sin_latitude: " << sin_latitude );
- SG_LOG(SG_FLIGHT,SG_INFO,"cos_latitude: " << cos_latitude );
SG_LOG(SG_FLIGHT,SG_INFO,"altitude_agl: " << altitude_agl );
}
+bool
+FGInterface::prepare_ground_cache_m(double startSimTime, double endSimTime,
+ const double pt[3], double rad)
+{
+ return ground_cache.prepare_ground_cache(startSimTime, endSimTime,
+ SGVec3d(pt), rad);
+}
+
+bool
+FGInterface::prepare_ground_cache_ft(double startSimTime, double endSimTime,
+ const double pt[3], double rad)
+{
+ // Convert units and do the real work.
+ SGVec3d pt_ft = SG_FEET_TO_METER*SGVec3d(pt);
+ return ground_cache.prepare_ground_cache(startSimTime, endSimTime,
+ pt_ft, rad*SG_FEET_TO_METER);
+}
+
+bool
+FGInterface::is_valid_m(double *ref_time, double pt[3], double *rad)
+{
+ SGVec3d _pt;
+ bool valid = ground_cache.is_valid(*ref_time, _pt, *rad);
+ assign(pt, _pt);
+ return valid;
+}
+
+bool FGInterface::is_valid_ft(double *ref_time, double pt[3], double *rad)
+{
+ // Convert units and do the real work.
+ SGVec3d _pt;
+ bool found_ground = ground_cache.is_valid(*ref_time, _pt, *rad);
+ assign(pt, SG_METER_TO_FEET*_pt);
+ *rad *= SG_METER_TO_FEET;
+ return found_ground;
+}
+
+double
+FGInterface::get_cat_m(double t, const double pt[3],
+ double end[2][3], double vel[2][3])
+{
+ SGVec3d _end[2], _vel[2];
+ double dist = ground_cache.get_cat(t, SGVec3d(pt), _end, _vel);
+ for (int k=0; k<2; ++k) {
+ assign( end[k], _end[k] );
+ assign( vel[k], _vel[k] );
+ }
+ return dist;
+}
+
+double
+FGInterface::get_cat_ft(double t, const double pt[3],
+ double end[2][3], double vel[2][3])
+{
+ // Convert units and do the real work.
+ SGVec3d pt_m = SG_FEET_TO_METER*SGVec3d(pt);
+ SGVec3d _end[2], _vel[2];
+ double dist = ground_cache.get_cat(t, pt_m, _end, _vel);
+ for (int k=0; k<2; ++k) {
+ assign( end[k], SG_METER_TO_FEET*_end[k] );
+ assign( vel[k], SG_METER_TO_FEET*_vel[k] );
+ }
+ return dist*SG_METER_TO_FEET;
+}
+
+bool
+FGInterface::get_body_m(double t, simgear::BVHNode::Id id,
+ double bodyToWorld[16], double linearVel[3],
+ double angularVel[3])
+{
+ SGMatrixd _bodyToWorld;
+ SGVec3d _linearVel, _angularVel;
+ if (!ground_cache.get_body(t, _bodyToWorld, _linearVel, _angularVel, id))
+ return false;
+
+ assign(linearVel, _linearVel);
+ assign(angularVel, _angularVel);
+ for (unsigned i = 0; i < 16; ++i)
+ bodyToWorld[i] = _bodyToWorld.data()[i];
+
+ return true;
+}
+
+bool
+FGInterface::get_agl_m(double t, const double pt[3], double max_altoff,
+ double contact[3], double normal[3],
+ double linearVel[3], double angularVel[3],
+ SGMaterial const*& material, simgear::BVHNode::Id& id)
+{
+ SGVec3d pt_m = SGVec3d(pt) - max_altoff*ground_cache.get_down();
+ SGVec3d _contact, _normal, _linearVel, _angularVel;
+ material = 0;
+ bool ret = ground_cache.get_agl(t, pt_m, _contact, _normal, _linearVel,
+ _angularVel, id, material);
+ // correct the linear velocity, since the line intersector delivers
+ // values for the start point and the get_agl function should
+ // traditionally deliver for the contact point
+ _linearVel += cross(_angularVel, _contact - pt_m);
+
+ assign(contact, _contact);
+ assign(normal, _normal);
+ assign(linearVel, _linearVel);
+ assign(angularVel, _angularVel);
+ return ret;
+}
+
+bool
+FGInterface::get_agl_ft(double t, const double pt[3], double max_altoff,
+ double contact[3], double normal[3],
+ double linearVel[3], double angularVel[3],
+ SGMaterial const*& material, simgear::BVHNode::Id& id)
+{
+ // Convert units and do the real work.
+ SGVec3d pt_m = SGVec3d(pt) - max_altoff*ground_cache.get_down();
+ pt_m *= SG_FEET_TO_METER;
+ SGVec3d _contact, _normal, _linearVel, _angularVel;
+ material = 0;
+ bool ret = ground_cache.get_agl(t, pt_m, _contact, _normal, _linearVel,
+ _angularVel, id, material);
+ // correct the linear velocity, since the line intersector delivers
+ // values for the start point and the get_agl function should
+ // traditionally deliver for the contact point
+ _linearVel += cross(_angularVel, _contact - pt_m);
+
+ // Convert units back ...
+ assign( contact, SG_METER_TO_FEET*_contact );
+ assign( normal, _normal );
+ assign( linearVel, SG_METER_TO_FEET*_linearVel );
+ assign( angularVel, _angularVel );
+ return ret;
+}
+
+bool
+FGInterface::get_nearest_m(double t, const double pt[3], double maxDist,
+ double contact[3], double normal[3],
+ double linearVel[3], double angularVel[3],
+ SGMaterial const*& material,
+ simgear::BVHNode::Id& id)
+{
+ SGVec3d _contact, _linearVel, _angularVel;
+ if (!ground_cache.get_nearest(t, SGVec3d(pt), maxDist, _contact, _linearVel,
+ _angularVel, id, material))
+ return false;
+
+ assign(contact, _contact);
+ assign(linearVel, _linearVel);
+ assign(angularVel, _angularVel);
+ return true;
+}
+
+bool
+FGInterface::get_nearest_ft(double t, const double pt[3], double maxDist,
+ double contact[3], double normal[3],
+ double linearVel[3], double angularVel[3],
+ SGMaterial const*& material,
+ simgear::BVHNode::Id& id)
+{
+ SGVec3d _contact, _linearVel, _angularVel;
+ if (!ground_cache.get_nearest(t, SG_FEET_TO_METER*SGVec3d(pt),
+ SG_FEET_TO_METER*maxDist, _contact, _linearVel,
+ _angularVel, id, material))
+ return false;
+
+ assign(contact, SG_METER_TO_FEET*_contact);
+ assign(linearVel, SG_METER_TO_FEET*_linearVel);
+ assign(angularVel, _angularVel);
+ return true;
+}
+
+double
+FGInterface::get_groundlevel_m(double lat, double lon, double alt)
+{
+ return get_groundlevel_m(SGGeod::fromRadM(lon, lat, alt));
+}
+
+double
+FGInterface::get_groundlevel_m(const SGGeod& geod)
+{
+ // Compute the cartesian position of the given lat/lon/alt.
+ SGVec3d pos = SGVec3d::fromGeod(geod);
+
+ // FIXME: how to handle t - ref_time differences ???
+ SGVec3d cpos;
+ double ref_time = 0, radius;
+ // Prepare the ground cache for that position.
+ if (!is_valid_m(&ref_time, cpos.data(), &radius)) {
+ double startTime = ref_time;
+ double endTime = startTime + 1;
+ bool ok = prepare_ground_cache_m(startTime, endTime, pos.data(), 10);
+ /// This is most likely the case when the given altitude is
+ /// too low, try with a new altitude of 10000m, that should be
+ /// sufficient to find a ground level below everywhere on our planet
+ if (!ok) {
+ pos = SGVec3d::fromGeod(SGGeod::fromGeodM(geod, 10000));
+ /// If there is still no ground, return sea level radius
+ if (!prepare_ground_cache_m(startTime, endTime, pos.data(), 10))
+ return 0;
+ }
+ } else if (radius*radius <= distSqr(pos, cpos)) {
+ double startTime = ref_time;
+ double endTime = startTime + 1;
+
+ /// We reuse the old radius value, but only if it is at least 10 Meters ..
+ if (!(10 < radius)) // Well this strange compare is nan safe
+ radius = 10;
+
+ bool ok = prepare_ground_cache_m(startTime, endTime, pos.data(), radius);
+ /// This is most likely the case when the given altitude is
+ /// too low, try with a new altitude of 10000m, that should be
+ /// sufficient to find a ground level below everywhere on our planet
+ if (!ok) {
+ pos = SGVec3d::fromGeod(SGGeod::fromGeodM(geod, 10000));
+ /// If there is still no ground, return sea level radius
+ if (!prepare_ground_cache_m(startTime, endTime, pos.data(), radius))
+ return 0;
+ }
+ }
+
+ double contact[3], normal[3], vel[3], angvel[3];
+ const SGMaterial* material;
+ simgear::BVHNode::Id id;
+ // Ignore the return value here, since it just tells us if
+ // the returns stem from the groundcache or from the coarse
+ // computations below the groundcache. The contact point is still something
+ // valid, the normals and the other returns just contain some defaults.
+ get_agl_m(ref_time, pos.data(), 2.0, contact, normal, vel, angvel,
+ material, id);
+ return SGGeod::fromCart(SGVec3d(contact)).getElevationM();
+}
+
+bool
+FGInterface::caught_wire_m(double t, const double pt[4][3])
+{
+ SGVec3d pt_m[4];
+ for (int i=0; i<4; ++i)
+ pt_m[i] = SGVec3d(pt[i]);
+
+ return ground_cache.caught_wire(t, pt_m);
+}
+
+bool
+FGInterface::caught_wire_ft(double t, const double pt[4][3])
+{
+ // Convert units and do the real work.
+ SGVec3d pt_m[4];
+ for (int i=0; i<4; ++i)
+ pt_m[i] = SG_FEET_TO_METER*SGVec3d(pt[i]);
+
+ return ground_cache.caught_wire(t, pt_m);
+}
+
+bool
+FGInterface::get_wire_ends_m(double t, double end[2][3], double vel[2][3])
+{
+ SGVec3d _end[2], _vel[2];
+ bool ret = ground_cache.get_wire_ends(t, _end, _vel);
+ for (int k=0; k<2; ++k) {
+ assign( end[k], _end[k] );
+ assign( vel[k], _vel[k] );
+ }
+ return ret;
+}
+
+bool
+FGInterface::get_wire_ends_ft(double t, double end[2][3], double vel[2][3])
+{
+ // Convert units and do the real work.
+ SGVec3d _end[2], _vel[2];
+ bool ret = ground_cache.get_wire_ends(t, _end, _vel);
+ for (int k=0; k<2; ++k) {
+ assign( end[k], SG_METER_TO_FEET*_end[k] );
+ assign( vel[k], SG_METER_TO_FEET*_vel[k] );
+ }
+ return ret;
+}
+
+void
+FGInterface::release_wire(void)
+{
+ ground_cache.release_wire();
+}
void fgToggleFDMdataLogging(void) {
cur_fdm_state->ToggleDataLogging();
projects / flightgear.git / blobdiff