7f36caede6
Remove the unfortunately named 'tmp.[cxx|hxx]', pushing the remaining code in FGLight. (second try, with init bug fixed)
375 lines
11 KiB
C++
375 lines
11 KiB
C++
// native_gui.cxx -- FGFS external gui data export class
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//
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// Written by Curtis Olson, started January 2002.
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//
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// Copyright (C) 2002 Curtis L. Olson - http://www.flightgear.org/~curt
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// $Id$
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <simgear/debug/logstream.hxx>
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#include <simgear/io/lowlevel.hxx> // endian tests
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#include <simgear/io/iochannel.hxx>
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#include <simgear/timing/sg_time.hxx>
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#include <Main/fg_props.hxx>
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#include <Main/globals.hxx>
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#include <Scenery/scenery.hxx>
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#include <FDM/flightProperties.hxx>
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#include "native_gui.hxx"
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// FreeBSD works better with this included last ... (?)
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#if defined( _MSC_VER )
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# include <windows.h>
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#elif defined( __MINGW32__ )
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# include <winsock2.h>
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#else
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# include <netinet/in.h> // htonl() ntohl()
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#endif
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// #define FG_USE_NETWORK_BYTE_ORDER
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#if defined( FG_USE_NETWORK_BYTE_ORDER )
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// The function htond is defined this way due to the way some
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// processors and OSes treat floating point values. Some will raise
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// an exception whenever a "bad" floating point value is loaded into a
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// floating point register. Solaris is notorious for this, but then
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// so is LynxOS on the PowerPC. By translating the data in place,
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// there is no need to load a FP register with the "corruped" floating
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// point value. By doing the BIG_ENDIAN test, I can optimize the
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// routine for big-endian processors so it can be as efficient as
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// possible
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static void htond (double &x)
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{
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if ( sgIsLittleEndian() ) {
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int *Double_Overlay;
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int Holding_Buffer;
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Double_Overlay = (int *) &x;
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Holding_Buffer = Double_Overlay [0];
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Double_Overlay [0] = htonl (Double_Overlay [1]);
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Double_Overlay [1] = htonl (Holding_Buffer);
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} else {
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return;
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}
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}
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static void htonf (float &x)
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{
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if ( sgIsLittleEndian() ) {
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int *Float_Overlay;
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int Holding_Buffer;
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Float_Overlay = (int *) &x;
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Holding_Buffer = Float_Overlay [0];
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Float_Overlay [0] = htonl (Holding_Buffer);
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} else {
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return;
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}
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}
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#endif
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FGNativeGUI::FGNativeGUI() {
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}
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FGNativeGUI::~FGNativeGUI() {
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}
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// open hailing frequencies
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bool FGNativeGUI::open() {
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if ( is_enabled() ) {
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SG_LOG( SG_IO, SG_ALERT, "This shouldn't happen, but the channel "
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<< "is already in use, ignoring" );
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return false;
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}
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SGIOChannel *io = get_io_channel();
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if ( ! io->open( get_direction() ) ) {
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SG_LOG( SG_IO, SG_ALERT, "Error opening channel communication layer." );
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return false;
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}
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set_enabled( true );
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fgSetDouble("/position/sea-level-radius-ft", SG_EQUATORIAL_RADIUS_FT);
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return true;
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}
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void FGProps2NetGUI( FGNetGUI *net ) {
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static SGPropertyNode *nav_freq
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= fgGetNode("/instrumentation/nav/frequencies/selected-mhz", true);
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static SGPropertyNode *nav_target_radial
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= fgGetNode("/instrumentation/nav/radials/target-radial-deg", true);
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static SGPropertyNode *nav_inrange
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= fgGetNode("/instrumentation/nav/in-range", true);
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static SGPropertyNode *nav_loc
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= fgGetNode("/instrumentation/nav/nav-loc", true);
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static SGPropertyNode *nav_gs_dist_signed
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= fgGetNode("/instrumentation/nav/gs-distance", true);
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static SGPropertyNode *nav_loc_dist
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= fgGetNode("/instrumentation/nav/nav-distance", true);
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static SGPropertyNode *nav_reciprocal_radial
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= fgGetNode("/instrumentation/nav/radials/reciprocal-radial-deg", true);
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static SGPropertyNode *nav_gs_deflection
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= fgGetNode("/instrumentation/nav/gs-needle-deflection", true);
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unsigned int i;
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static FlightProperties* fdm_state = new FlightProperties;
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// Version sanity checking
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net->version = FG_NET_GUI_VERSION;
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// Aero parameters
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net->longitude = fdm_state->get_Longitude();
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net->latitude = fdm_state->get_Latitude();
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net->altitude = fdm_state->get_Altitude() * SG_FEET_TO_METER;
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net->phi = fdm_state->get_Phi();
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net->theta = fdm_state->get_Theta();
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net->psi = fdm_state->get_Psi();
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// Velocities
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net->vcas = fdm_state->get_V_calibrated_kts();
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net->climb_rate = fdm_state->get_Climb_Rate();
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// Consumables
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net->num_tanks = FGNetGUI::FG_MAX_TANKS;
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for ( i = 0; i < net->num_tanks; ++i ) {
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SGPropertyNode *node = fgGetNode("/consumables/fuel/tank", i, true);
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net->fuel_quantity[i] = node->getDoubleValue("level-gal_us");
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}
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// Environment
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net->cur_time = globals->get_time_params()->get_cur_time();
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net->warp = globals->get_warp();
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net->ground_elev = fdm_state->get_Runway_altitude_m();
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// Approach
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net->tuned_freq = nav_freq->getDoubleValue();
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net->nav_radial = nav_target_radial->getDoubleValue();
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net->in_range = nav_inrange->getBoolValue();
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if ( nav_loc->getBoolValue() ) {
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// is an ILS
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net->dist_nm
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= nav_gs_dist_signed->getDoubleValue()
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* SG_METER_TO_NM;
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} else {
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// is a VOR
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net->dist_nm = nav_loc_dist->getDoubleValue()
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* SG_METER_TO_NM;
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}
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net->course_deviation_deg
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= nav_reciprocal_radial->getDoubleValue()
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- nav_target_radial->getDoubleValue();
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if ( net->course_deviation_deg < -1000.0
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|| net->course_deviation_deg > 1000.0 )
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{
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// Sanity check ...
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net->course_deviation_deg = 0.0;
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}
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while ( net->course_deviation_deg > 180.0 ) {
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net->course_deviation_deg -= 360.0;
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}
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while ( net->course_deviation_deg < -180.0 ) {
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net->course_deviation_deg += 360.0;
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}
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if ( fabs(net->course_deviation_deg) > 90.0 )
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net->course_deviation_deg
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= ( net->course_deviation_deg<0.0
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? -net->course_deviation_deg - 180.0
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: -net->course_deviation_deg + 180.0 );
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if ( nav_loc->getBoolValue() ) {
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// is an ILS
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net->gs_deviation_deg
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= nav_gs_deflection->getDoubleValue()
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/ 5.0;
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} else {
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// is an ILS
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net->gs_deviation_deg = -9999.0;
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}
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#if defined( FG_USE_NETWORK_BYTE_ORDER )
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// Convert the net buffer to network format
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net->version = htonl(net->version);
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htond(net->longitude);
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htond(net->latitude);
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htonf(net->altitude);
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htonf(net->phi);
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htonf(net->theta);
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htonf(net->psi);
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htonf(net->vcas);
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htonf(net->climb_rate);
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for ( i = 0; i < net->num_tanks; ++i ) {
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htonf(net->fuel_quantity[i]);
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}
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net->num_tanks = htonl(net->num_tanks);
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net->cur_time = htonl( net->cur_time );
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net->warp = htonl( net->warp );
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net->ground_elev = htonl( net->ground_elev );
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htonf(net->tuned_freq);
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htonf(net->nav_radial);
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net->in_range = htonl( net->in_range );
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htonf(net->dist_nm);
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htonf(net->course_deviation_deg);
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htonf(net->gs_deviation_deg);
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#endif
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}
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void FGNetGUI2Props( FGNetGUI *net ) {
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unsigned int i;
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#if defined( FG_USE_NETWORK_BYTE_ORDER )
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// Convert to the net buffer from network format
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net->version = ntohl(net->version);
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htond(net->longitude);
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htond(net->latitude);
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htonf(net->altitude);
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htonf(net->phi);
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htonf(net->theta);
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htonf(net->psi);
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htonf(net->vcas);
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htonf(net->climb_rate);
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net->num_tanks = htonl(net->num_tanks);
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for ( i = 0; i < net->num_tanks; ++i ) {
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htonf(net->fuel_quantity[i]);
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}
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net->cur_time = ntohl(net->cur_time);
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net->warp = ntohl(net->warp);
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net->ground_elev = htonl( net->ground_elev );
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htonf(net->tuned_freq);
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htonf(net->nav_radial);
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net->in_range = htonl( net->in_range );
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htonf(net->dist_nm);
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htonf(net->course_deviation_deg);
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htonf(net->gs_deviation_deg);
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#endif
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if ( net->version == FG_NET_GUI_VERSION ) {
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FlightProperties fdm_state;
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// cout << "pos = " << net->longitude << " " << net->latitude << endl;
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// cout << "sea level rad = " << fdm_state->get_Sea_level_radius()
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// << endl;
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fdm_state.set_Latitude(net->latitude);
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fdm_state.set_Longitude(net->longitude);
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fdm_state.set_Altitude(net->altitude * SG_METER_TO_FEET);
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fdm_state.set_Euler_Angles( net->phi,
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net->theta,
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net->psi );
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fdm_state.set_V_calibrated_kts( net->vcas );
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fdm_state.set_Climb_Rate( net->climb_rate );
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for (i = 0; i < net->num_tanks; ++i ) {
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SGPropertyNode * node
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= fgGetNode("/consumables/fuel/tank", i, true);
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node->setDoubleValue("level-gal_us", net->fuel_quantity[i] );
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}
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if ( net->cur_time ) {
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fgSetLong("/sim/time/cur-time-override", net->cur_time);
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}
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globals->set_warp( net->warp );
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// Approach
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fgSetDouble( "/instrumentation/nav[0]/frequencies/selected-mhz",
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net->tuned_freq );
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fgSetBool( "/instrumentation/nav[0]/in-range", net->in_range );
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fgSetDouble( "/instrumentation/dme/indicated-distance-nm", net->dist_nm );
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fgSetDouble( "/instrumentation/nav[0]/heading-needle-deflection",
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net->course_deviation_deg );
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fgSetDouble( "/instrumentation/nav[0]/gs-needle-deflection",
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net->gs_deviation_deg );
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} else {
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SG_LOG( SG_IO, SG_ALERT,
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"Error: version mismatch in FGNetNativeGUI2Props()" );
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SG_LOG( SG_IO, SG_ALERT,
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"\tread " << net->version << " need " << FG_NET_GUI_VERSION );
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SG_LOG( SG_IO, SG_ALERT,
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"\tNeed to upgrade net_fdm.hxx and recompile." );
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}
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}
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// process work for this port
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bool FGNativeGUI::process() {
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SGIOChannel *io = get_io_channel();
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int length = sizeof(buf);
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if ( get_direction() == SG_IO_OUT ) {
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// cout << "size of fdm_state = " << length << endl;
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FGProps2NetGUI( &buf );
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if ( ! io->write( (char *)(& buf), length ) ) {
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SG_LOG( SG_IO, SG_ALERT, "Error writing data." );
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return false;
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}
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} else if ( get_direction() == SG_IO_IN ) {
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if ( io->get_type() == sgFileType ) {
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if ( io->read( (char *)(& buf), length ) == length ) {
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SG_LOG( SG_IO, SG_DEBUG, "Success reading data." );
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FGNetGUI2Props( &buf );
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}
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} else {
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while ( io->read( (char *)(& buf), length ) == length ) {
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SG_LOG( SG_IO, SG_DEBUG, "Success reading data." );
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FGNetGUI2Props( &buf );
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}
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}
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}
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return true;
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}
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// close the channel
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bool FGNativeGUI::close() {
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SGIOChannel *io = get_io_channel();
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set_enabled( false );
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if ( ! io->close() ) {
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return false;
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}
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return true;
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}
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