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 #include <simgear/scene/model/shadowvolume.hxx>
  21
  22 #include <Main/globals.hxx>
  23 #include <Main/fg_props.hxx>
  24 #include <Main/renderer.hxx>
  25 #include <Main/viewmgr.hxx>
  26 #include <Main/viewer.hxx>
  27 #include <Scenery/scenery.hxx>
  28
  29 #include "model_panel.hxx"
  30
  31 #include "acmodel.hxx"
  32
  33
  34 \f
  35 ////////////////////////////////////////////////////////////////////////
  36 // Implementation of FGAircraftModel
  37 ////////////////////////////////////////////////////////////////////////
  38
  39 FGAircraftModel::FGAircraftModel ()
  40   : _aircraft(0),
  41     _selector(new ssgSelector),
  42     _scene(new ssgRoot),
  43     _nearplane(0.01f),
  44     _farplane(1000.0f)
  45 {
  46 }
  47
  48 FGAircraftModel::~FGAircraftModel ()
  49 {
  50   // Unregister that one at the scenery manager
  51   if (_aircraft)
  52     globals->get_scenery()->unregister_placement_transform(_aircraft->getTransform());
  53
  54   delete _aircraft;
  55   delete _scene;
  56                                 // SSG will delete it
  57   globals->get_scenery()->get_aircraft_branch()->removeKid(_selector);
  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     ssgBranch *model = fgLoad3DModelPanel( globals->get_fg_root(),
  67                                            path,
  68                                            globals->get_props(),
  69                                            globals->get_sim_time_sec() );
  70     _aircraft->init( model );
  71   } catch (const sg_exception &ex) {
  72     SG_LOG(SG_GENERAL, SG_ALERT, "Failed to load aircraft from " << path);
  73     SG_LOG(SG_GENERAL, SG_ALERT, "(Falling back to glider.ac.)");
  74     ssgBranch *model = fgLoad3DModelPanel( globals->get_fg_root(),
  75                                            "Models/Geometry/glider.ac",
  76                                            globals->get_props(),
  77                                            globals->get_sim_time_sec() );
  78     _aircraft->init( model );
  79   }
  80   _scene->addKid(_aircraft->getSceneGraph());
  81   _selector->addKid(_aircraft->getSceneGraph());
  82   globals->get_scenery()->get_aircraft_branch()->addKid(_selector);
  83
  84   // Register that one at the scenery manager
  85   globals->get_scenery()->register_placement_transform(_aircraft->getTransform());
  86 }
  87
  88 void
  89 FGAircraftModel::bind ()
  90 {
  91   // No-op
  92 }
  93
  94 void
  95 FGAircraftModel::unbind ()
  96 {
  97   // No-op
  98 }
  99
 100 void
 101 FGAircraftModel::update (double dt)
 102 {
 103   int view_number = globals->get_viewmgr()->get_current();
 104   int is_internal = fgGetBool("/sim/current-view/internal");
 105
 106   if (view_number == 0 && !is_internal) {
 107     _aircraft->setVisible(false);
 108   } else {
 109     _aircraft->setVisible(true);
 110   }
 111
 112   _aircraft->setPosition(fgGetDouble("/position/longitude-deg"),
 113                          fgGetDouble("/position/latitude-deg"),
 114                          fgGetDouble("/position/altitude-ft"));
 115   _aircraft->setOrientation(fgGetDouble("/orientation/roll-deg"),
 116                             fgGetDouble("/orientation/pitch-deg"),
 117                             fgGetDouble("/orientation/heading-deg"));
 118   _aircraft->update();
 119 }
 120
 121 void
 122 FGAircraftModel::draw ()
 123 {
 124                                 // OK, now adjust the clip planes and draw
 125                                 // FIXME: view number shouldn't be
 126                                 // hard-coded.
 127   bool is_internal = globals->get_current_view()->getInternal();
 128   if (_aircraft->getVisible() && is_internal) {
 129     glClearDepth(1);
 130     glClear(GL_DEPTH_BUFFER_BIT);
 131     FGRenderer::setNearFar(_nearplane, _farplane);
 132     ssgCullAndDraw(_scene);
 133     _selector->select(0);
 134   } else {
 135     _selector->select(1);
 136     // in external view the shadows are drawn before the transparent parts of the ac
 137     _scene->setTravCallback( SSG_CALLBACK_POSTTRAV, SGShadowVolume::ACpostTravCB);
 138     ssgCullAndDraw(_scene);
 139     _scene->setTravCallback( SSG_CALLBACK_POSTTRAV, 0);
 140   }
 141
 142 }
 143
 144 // end of model.cxx