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