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(path);
  58   } catch (const sg_exception &ex) {
  59     SG_LOG(SG_GENERAL, SG_ALERT, "Failed to load aircraft from " << path);
  60     SG_LOG(SG_GENERAL, SG_ALERT, "(Falling back to glider.ac.)");
  61     _aircraft->init("Models/Geometry/glider.ac");
  62   }
  63   _scene->addKid(_aircraft->getSceneGraph());
  64   _selector->addKid(_aircraft->getSceneGraph());
  65   globals->get_scenery()->get_aircraft_branch()->addKid(_selector);
  66 }
  67
  68 void
  69 FGAircraftModel::bind ()
  70 {
  71   // No-op
  72 }
  73
  74 void
  75 FGAircraftModel::unbind ()
  76 {
  77   // No-op
  78 }
  79
  80 void
  81 FGAircraftModel::update (double dt)
  82 {
  83   int view_number = globals->get_viewmgr()->get_current();
  84
  85   if (view_number == 0 && !fgGetBool("/sim/view/internal")) {
  86     _aircraft->setVisible(false);
  87   } else {
  88     _aircraft->setVisible(true);
  89   }
  90
  91   _aircraft->setPosition(fgGetDouble("/position/longitude-deg"),
  92                          fgGetDouble("/position/latitude-deg"),
  93                          fgGetDouble("/position/altitude-ft"));
  94   _aircraft->setOrientation(fgGetDouble("/orientation/roll-deg"),
  95                             fgGetDouble("/orientation/pitch-deg"),
  96                             fgGetDouble("/orientation/heading-deg"));
  97   _aircraft->update(dt);
  98
  99 }
 100
 101 void
 102 FGAircraftModel::draw ()
 103 {
 104                                 // OK, now adjust the clip planes and draw
 105                                 // FIXME: view number shouldn't be
 106                                 // hard-coded.
 107   int view_number = globals->get_viewmgr()->get_current();
 108   if (_aircraft->getVisible() && view_number == 0) {
 109     glClearDepth(1);
 110     glClear(GL_DEPTH_BUFFER_BIT);
 111     ssgSetNearFar(_nearplane, _farplane);
 112     ssgCullAndDraw(_scene);
 113     _selector->select(0);
 114   } else {
 115     _selector->select(1);
 116   }
 117
 118 }
 119
 120 // end of model.cxx