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
  26 #include "model_panel.hxx"
  27
  28 #include "acmodel.hxx"
  29
  30 \f
  31 ////////////////////////////////////////////////////////////////////////
  32 // Implementation of FGAircraftModel
  33 ////////////////////////////////////////////////////////////////////////
  34
  35 FGAircraftModel::FGAircraftModel ()
  36   : _aircraft(0),
  37     _selector(new osg::Switch),
  38     _scene(new osg::Group),
  39     _nearplane(0.10f),
  40     _farplane(1000.0f)
  41 {
  42 }
  43
  44 FGAircraftModel::~FGAircraftModel ()
  45 {
  46   // Unregister that one at the scenery manager
  47   if (_aircraft)
  48     globals->get_scenery()->unregister_placement_transform(_aircraft->getTransform());
  49
  50   delete _aircraft;
  51                                 // SSG will delete it
  52   globals->get_scenery()->get_aircraft_branch()->removeChild(_selector.get());
  53 }
  54
  55 void
  56 FGAircraftModel::init ()
  57 {
  58   SGPath liveryPath;
  59   _aircraft = new SGModelPlacement;
  60   string path = fgGetString("/sim/model/path", "Models/Geometry/glider.ac");
  61   string texture_path = fgGetString("/sim/model/texture-path");
  62   if( texture_path.size() ) {
  63       SGPath temp_path;
  64       if ( !ulIsAbsolutePathName( texture_path.c_str() ) ) {
  65           temp_path = globals->get_fg_root();
  66           temp_path.append( SGPath( path ).dir() );
  67           temp_path.append( texture_path );
  68           liveryPath = temp_path;
  69       } else
  70           liveryPath = texture_path;
  71   }
  72   try {
  73     osg::Node *model = fgLoad3DModelPanel( globals->get_fg_root(),
  74                                            path,
  75                                            globals->get_props(),
  76                                            globals->get_sim_time_sec(),
  77                                            liveryPath);
  78     _aircraft->init( model );
  79   } catch (const sg_exception &ex) {
  80     SG_LOG(SG_GENERAL, SG_ALERT, "Failed to load aircraft from " << path);
  81     SG_LOG(SG_GENERAL, SG_ALERT, "(Falling back to glider.ac.)");
  82     osg::Node *model = fgLoad3DModelPanel( globals->get_fg_root(),
  83                                            "Models/Geometry/glider.ac",
  84                                            globals->get_props(),
  85                                            globals->get_sim_time_sec(),
  86                                            liveryPath);
  87     _aircraft->init( model );
  88   }
  89   _scene->addChild(_aircraft->getSceneGraph());
  90   _selector->addChild(_aircraft->getSceneGraph());
  91   // Do not do altitude computations with that model
  92   _selector->setNodeMask(~SG_NODEMASK_TERRAIN_BIT);
  93   globals->get_scenery()->get_aircraft_branch()->addChild(_selector.get());
  94
  95   // Register that one at the scenery manager
  96   globals->get_scenery()->register_placement_transform(_aircraft->getTransform());
  97 }
  98
  99 void
 100 FGAircraftModel::bind ()
 101 {
 102   // No-op
 103 }
 104
 105 void
 106 FGAircraftModel::unbind ()
 107 {
 108   // No-op
 109 }
 110
 111 void
 112 FGAircraftModel::update (double dt)
 113 {
 114   int view_number = globals->get_viewmgr()->get_current();
 115   int is_internal = fgGetBool("/sim/current-view/internal");
 116
 117   if (view_number == 0 && !is_internal) {
 118     _aircraft->setVisible(false);
 119   } else {
 120     _aircraft->setVisible(true);
 121   }
 122
 123   _aircraft->setPosition(fgGetDouble("/position/longitude-deg"),
 124                          fgGetDouble("/position/latitude-deg"),
 125                          fgGetDouble("/position/altitude-ft"));
 126   _aircraft->setOrientation(fgGetDouble("/orientation/roll-deg"),
 127                             fgGetDouble("/orientation/pitch-deg"),
 128                             fgGetDouble("/orientation/heading-deg"));
 129   _aircraft->update();
 130 }
 131
 132
 133 // end of model.cxx