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/structure/exception.hxx>
  18 #include <simgear/misc/sg_path.hxx>
  19 #include <simgear/scene/model/placement.hxx>
  20
  21 #include <Main/globals.hxx>
  22 #include <Main/fg_props.hxx>
  23 #include <Main/viewmgr.hxx>
  24 #include <Main/viewer.hxx>
  25 #include <Scenery/scenery.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     _selector(new ssgSelector),
  40     _scene(new ssgRoot),
  41     _nearplane(0.01f),
  42     _farplane(1000.0f)
  43 {
  44 }
  45
  46 FGAircraftModel::~FGAircraftModel ()
  47 {
  48   delete _aircraft;
  49   delete _scene;
  50                                 // SSG will delete it
  51   globals->get_scenery()->get_aircraft_branch()->removeKid(_selector);
  52 }
  53
  54 void
  55 FGAircraftModel::init ()
  56 {
  57   _aircraft = new SGModelPlacement;
  58   string path = fgGetString("/sim/model/path", "Models/Geometry/glider.ac");
  59   try {
  60     ssgBranch *model = fgLoad3DModelPanel( globals->get_fg_root(),
  61                                            path,
  62                                            globals->get_props(),
  63                                            globals->get_sim_time_sec() );
  64     _aircraft->init( model );
  65   } catch (const sg_exception &ex) {
  66     SG_LOG(SG_GENERAL, SG_ALERT, "Failed to load aircraft from " << path);
  67     SG_LOG(SG_GENERAL, SG_ALERT, "(Falling back to glider.ac.)");
  68     ssgBranch *model = fgLoad3DModelPanel( globals->get_fg_root(),
  69                                            "Models/Geometry/glider.ac",
  70                                            globals->get_props(),
  71                                            globals->get_sim_time_sec() );
  72     _aircraft->init( model );
  73   }
  74   _scene->addKid(_aircraft->getSceneGraph());
  75   _selector->addKid(_aircraft->getSceneGraph());
  76   globals->get_scenery()->get_aircraft_branch()->addKid(_selector);
  77 }
  78
  79 void
  80 FGAircraftModel::bind ()
  81 {
  82   // No-op
  83 }
  84
  85 void
  86 FGAircraftModel::unbind ()
  87 {
  88   // No-op
  89 }
  90
  91 void
  92 FGAircraftModel::update (double dt)
  93 {
  94   int view_number = globals->get_viewmgr()->get_current();
  95   int is_internal = globals->get_current_view()->getInternal();
  96
  97   if (view_number == 0 && !is_internal) {
  98     _aircraft->setVisible(false);
  99   } else {
 100     _aircraft->setVisible(true);
 101   }
 102
 103   _aircraft->setPosition(fgGetDouble("/position/longitude-deg"),
 104                          fgGetDouble("/position/latitude-deg"),
 105                          fgGetDouble("/position/altitude-ft"));
 106   _aircraft->setOrientation(fgGetDouble("/orientation/roll-deg"),
 107                             fgGetDouble("/orientation/pitch-deg"),
 108                             fgGetDouble("/orientation/heading-deg"));
 109   _aircraft->update( globals->get_scenery()->get_center() );
 110
 111 }
 112
 113 void
 114 FGAircraftModel::draw ()
 115 {
 116                                 // OK, now adjust the clip planes and draw
 117                                 // FIXME: view number shouldn't be
 118                                 // hard-coded.
 119   bool is_internal = globals->get_current_view()->getInternal();
 120   if (_aircraft->getVisible() && is_internal) {
 121     glClearDepth(1);
 122     glClear(GL_DEPTH_BUFFER_BIT);
 123     ssgSetNearFar(_nearplane, _farplane);
 124     ssgCullAndDraw(_scene);
 125     _selector->select(0);
 126   } else {
 127     _selector->select(1);
 128   }
 129
 130 }
 131
 132 // end of model.cxx