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 <plib/sg.h>
  13 #include <plib/ssg.h>
  14
  15 #include <simgear/compiler.h>
  16 #include <simgear/debug/logstream.hxx>
  17 #include <simgear/misc/exception.hxx>
  18 #include <simgear/misc/sg_path.hxx>
  19
  20 #include <Main/globals.hxx>
  21 #include <Main/fg_props.hxx>
  22 #include <Main/viewmgr.hxx>
  23 #include <Scenery/scenery.hxx>
  24
  25 #include "model_panel.hxx"
  26 #include "placement.hxx"
  27
  28 #include "acmodel.hxx"
  29
  30
  31 \f
  32 ////////////////////////////////////////////////////////////////////////
  33 // Implementation of FGAircraftModel
  34 ////////////////////////////////////////////////////////////////////////
  35
  36 FGAircraftModel::FGAircraftModel ()
  37   : _aircraft(0),
  38     _selector(new ssgSelector),
  39     _scene(new ssgRoot),
  40     _nearplane(0.01f),
  41     _farplane(100.0f)
  42 {
  43 }
  44
  45 FGAircraftModel::~FGAircraftModel ()
  46 {
  47   delete _aircraft;
  48   delete _scene;
  49                                 // SSG will delete it
  50   globals->get_scenery()->get_aircraft_branch()->removeKid(_selector);
  51 }
  52
  53 void
  54 FGAircraftModel::init ()
  55 {
  56   _aircraft = new FGModelPlacement;
  57   string path = fgGetString("/sim/model/path", "Models/Geometry/glider.ac");
  58   try {
  59     ssgBranch *model = fgLoad3DModelPanel( globals->get_fg_root(),
  60                                            path,
  61                                            globals->get_props(),
  62                                            globals->get_sim_time_sec() );
  63     _aircraft->init( model );
  64   } catch (const sg_exception &ex) {
  65     SG_LOG(SG_GENERAL, SG_ALERT, "Failed to load aircraft from " << path);
  66     SG_LOG(SG_GENERAL, SG_ALERT, "(Falling back to glider.ac.)");
  67     ssgBranch *model = fgLoad3DModelPanel( globals->get_fg_root(),
  68                                            "Models/Geometry/glider.ac",
  69                                            globals->get_props(),
  70                                            globals->get_sim_time_sec() );
  71     _aircraft->init( model );
  72   }
  73   _scene->addKid(_aircraft->getSceneGraph());
  74   _selector->addKid(_aircraft->getSceneGraph());
  75   globals->get_scenery()->get_aircraft_branch()->addKid(_selector);
  76 }
  77
  78 void
  79 FGAircraftModel::bind ()
  80 {
  81   // No-op
  82 }
  83
  84 void
  85 FGAircraftModel::unbind ()
  86 {
  87   // No-op
  88 }
  89
  90 void
  91 FGAircraftModel::update (double dt)
  92 {
  93   int view_number = globals->get_viewmgr()->get_current();
  94
  95   if (view_number == 0 && !fgGetBool("/sim/view/internal")) {
  96     _aircraft->setVisible(false);
  97   } else {
  98     _aircraft->setVisible(true);
  99   }
 100
 101   _aircraft->setPosition(fgGetDouble("/position/longitude-deg"),
 102                          fgGetDouble("/position/latitude-deg"),
 103                          fgGetDouble("/position/altitude-ft"));
 104   _aircraft->setOrientation(fgGetDouble("/orientation/roll-deg"),
 105                             fgGetDouble("/orientation/pitch-deg"),
 106                             fgGetDouble("/orientation/heading-deg"));
 107   _aircraft->update( globals->get_scenery()->get_center() );
 108
 109 }
 110
 111 void
 112 FGAircraftModel::draw ()
 113 {
 114                                 // OK, now adjust the clip planes and draw
 115                                 // FIXME: view number shouldn't be
 116                                 // hard-coded.
 117   int view_number = globals->get_viewmgr()->get_current();
 118   if (_aircraft->getVisible() && view_number == 0) {
 119     glClearDepth(1);
 120     glClear(GL_DEPTH_BUFFER_BIT);
 121     ssgSetNearFar(_nearplane, _farplane);
 122     ssgCullAndDraw(_scene);
 123     _selector->select(0);
 124   } else {
 125     _selector->select(1);
 126   }
 127
 128 }
 129
 130 // end of model.cxx