src/Model/acmodel.cxx

   1 // model.cxx - manage a 3D aircraft model.
   2 // Written by David Megginson, started 2002.
   3 //
   4 // This file is in the Public Domain, and comes with no warranty.
   5
   6 #ifdef HAVE_CONFIG_H
   7 #  include <config.h>
   8 #endif
   9
  10 #include <string.h>             // for strcmp()
  11
  12 #include <simgear/compiler.h>
  13 #include <simgear/debug/logstream.hxx>
  14 #include <simgear/structure/exception.hxx>
  15 #include <simgear/misc/sg_path.hxx>
  16 #include <simgear/scene/model/placement.hxx>
  17 #include <simgear/scene/util/SGNodeMasks.hxx>
  18
  19 #include <Main/globals.hxx>
  20 #include <Main/fg_props.hxx>
  21 #include <Main/renderer.hxx>
  22 #include <Main/viewmgr.hxx>
  23 #include <Main/viewer.hxx>
  24 #include <Scenery/scenery.hxx>
  25 #include <Sound/fg_fx.hxx>
  26
  27 #include "model_panel.hxx"
  28
  29 #include "acmodel.hxx"
  30
  31
  32 \f
  33 ////////////////////////////////////////////////////////////////////////
  34 // Implementation of FGAircraftModel
  35 ////////////////////////////////////////////////////////////////////////
  36
  37 FGAircraftModel::FGAircraftModel ()
  38   : _aircraft(0),
  39     _fx(0),
  40     _lon(0),
  41     _lat(0),
  42     _alt(0),
  43     _pitch(0),
  44     _roll(0),
  45     _heading(0),
  46     _speed_north(0),
  47     _speed_east(0),
  48     _speed_up(0)
  49 {
  50 }
  51
  52 FGAircraftModel::~FGAircraftModel ()
  53 {
  54   osg::Node* node = _aircraft->getSceneGraph();
  55   globals->get_scenery()->get_aircraft_branch()->removeChild(node);
  56
  57   delete _aircraft;
  58 }
  59
  60 void
  61 FGAircraftModel::init ()
  62 {
  63   _aircraft = new SGModelPlacement;
  64   string path = fgGetString("/sim/model/path", "Models/Geometry/glider.ac");
  65   try {
  66     osg::Node *model = fgLoad3DModelPanel( path, globals->get_props());
  67     _aircraft->init( model );
  68   } catch (const sg_exception &ex) {
  69     SG_LOG(SG_GENERAL, SG_ALERT, "Failed to load aircraft from " << path << ':');
  70     SG_LOG(SG_GENERAL, SG_ALERT, "  " << ex.getFormattedMessage());
  71     SG_LOG(SG_GENERAL, SG_ALERT, "(Falling back to glider.ac.)");
  72     osg::Node *model = fgLoad3DModelPanel( "Models/Geometry/glider.ac",
  73                                            globals->get_props());
  74     _aircraft->init( model );
  75   }
  76   osg::Node* node = _aircraft->getSceneGraph();
  77   // Do not do altitude computations with that model
  78   node->setNodeMask(~SG_NODEMASK_TERRAIN_BIT);
  79   globals->get_scenery()->get_aircraft_branch()->addChild(node);
  80 }
  81
  82 void
  83 FGAircraftModel::bind ()
  84 {
  85    _lon = fgGetNode("position/longitude-deg", true);
  86    _lat = fgGetNode("position/latitude-deg", true);
  87    _alt = fgGetNode("position/altitude-ft", true);
  88    _pitch = fgGetNode("orientation/pitch-deg", true);
  89    _roll = fgGetNode("orientation/roll-deg", true);
  90    _heading = fgGetNode("orientation/heading-deg", true);
  91    _speed_north = fgGetNode("/velocities/speed-north-fps", true);
  92    _speed_east = fgGetNode("/velocities/speed-east-fps", true);
  93    _speed_up = fgGetNode("/velocities/vertical-speed-fps", true);
  94 }
  95
  96 void
  97 FGAircraftModel::unbind ()
  98 {
  99   // No-op
 100 }
 101
 102 void
 103 FGAircraftModel::update (double dt)
 104 {
 105   int view_number = globals->get_viewmgr()->get_current();
 106   int is_internal = fgGetBool("/sim/current-view/internal");
 107
 108   if (view_number == 0 && !is_internal) {
 109     _aircraft->setVisible(false);
 110   } else {
 111     _aircraft->setVisible(true);
 112   }
 113
 114   _aircraft->setPosition(_lon->getDoubleValue(),
 115                          _lat->getDoubleValue(),
 116                          _alt->getDoubleValue());
 117   _aircraft->setOrientation(_roll->getDoubleValue(),
 118                             _pitch->getDoubleValue(),
 119                             _heading->getDoubleValue());
 120   _aircraft->update();
 121
 122   if ( !_fx) {
 123     SGSoundMgr *smgr = (SGSoundMgr *)globals->get_subsystem("soundmgr");
 124     if (smgr) {
 125         _fx = new FGFX(smgr, "fx");
 126         _fx->init();
 127     }
 128   }
 129
 130   if (_fx) {
 131     // Get the Cartesian coordinates in meters
 132     SGVec3d pos = SGVec3d::fromGeod(_aircraft->getPosition());
 133     _fx->set_position( pos );
 134
 135     SGQuatd orient_m = SGQuatd::fromLonLat(_aircraft->getPosition());
 136     orient_m *= SGQuatd::fromYawPitchRollDeg(_heading->getDoubleValue(),
 137                                              _pitch->getDoubleValue(),
 138                                              _roll->getDoubleValue());
 139     SGVec3d orient = orient_m.rotateBack(SGVec3d::e1());
 140     _fx->set_orientation( toVec3f(orient) );
 141
 142     SGVec3f vel = SGVec3f( _speed_north->getFloatValue(),
 143                            _speed_east->getFloatValue(),
 144                            _speed_up->getFloatValue());
 145 // TODO: rotate to properly align with the model orientation
 146
 147     _fx->set_velocity( vel*SG_FEET_TO_METER );
 148   }
 149 }
 150
 151
 152 // end of model.cxx