1 // modelmgr.cxx - manage a collection of 3D models.
2 // Written by David Megginson, started 2002.
4 // This file is in the Public Domain, and comes with no warranty.
10 #include <simgear/compiler.h>
16 #include <simgear/scene/model/placement.hxx>
17 #include <simgear/scene/model/model.hxx>
19 #include <Main/fg_props.hxx>
20 #include <Scenery/scenery.hxx>
21 #include <Scripting/NasalSys.hxx>
24 #include "modelmgr.hxx"
29 FGModelMgr::FGModelMgr ()
30 : _selector(new ssgSelector)
34 FGModelMgr::~FGModelMgr ()
36 for (unsigned int i = 0; i < _instances.size(); i++) {
37 globals->get_scenery()->get_models_branch()
38 ->removeKid(_instances[i]->model->getSceneGraph());
46 vector<SGPropertyNode_ptr> model_nodes =
47 fgGetNode("/models", true)->getChildren("model");
48 for (unsigned int i = 0; i < model_nodes.size(); i++) {
49 SGPropertyNode * node = model_nodes[i];
50 SG_LOG(SG_GENERAL, SG_INFO,
51 "Adding model " << node->getStringValue("name", "[unnamed]"));
52 Instance * instance = new Instance;
53 SGModelPlacement *model = new SGModelPlacement;
54 instance->model = model;
56 = sgLoad3DModel( globals->get_fg_root(),
57 node->getStringValue("path",
58 "Models/Geometry/glider.ac"),
60 globals->get_sim_time_sec(), 0, new FGNasalModelData );
61 model->init( object );
63 // Set position and orientation either
64 // indirectly through property refs
65 // or directly with static values.
66 SGPropertyNode * child = node->getChild("longitude-deg-prop");
68 instance->lon_deg_node = fgGetNode(child->getStringValue(), true);
70 model->setLongitudeDeg(node->getDoubleValue("longitude-deg"));
72 child = node->getChild("latitude-deg-prop");
74 instance->lat_deg_node = fgGetNode(child->getStringValue(), true);
76 model->setLatitudeDeg(node->getDoubleValue("latitude-deg"));
78 child = node->getChild("elevation-ft-prop");
80 instance->elev_ft_node = fgGetNode(child->getStringValue(), true);
82 model->setElevationFt(node->getDoubleValue("elevation-ft"));
84 child = node->getChild("roll-deg-prop");
86 instance->roll_deg_node = fgGetNode(child->getStringValue(), true);
88 model->setRollDeg(node->getDoubleValue("roll-deg"));
90 child = node->getChild("pitch-deg-prop");
92 instance->pitch_deg_node = fgGetNode(child->getStringValue(), true);
94 model->setPitchDeg(node->getDoubleValue("pitch-deg"));
96 child = node->getChild("heading-deg-prop");
98 instance->heading_deg_node = fgGetNode(child->getStringValue(), true);
100 model->setHeadingDeg(node->getDoubleValue("heading-deg"));
102 // Add this model to the global scene graph
103 globals->get_scenery()->get_scene_graph()->addKid(model->getSceneGraph());
105 // Register that one at the scenery manager
106 globals->get_scenery()->register_placement_transform(model->getTransform());
109 // Save this instance for updating
110 add_instance(instance);
120 FGModelMgr::unbind ()
125 FGModelMgr::update (double dt)
127 for (unsigned int i = 0; i < _instances.size(); i++) {
128 Instance * instance = _instances[i];
129 SGModelPlacement * model = instance->model;
131 // Optionally set position from properties
132 if (instance->lon_deg_node != 0)
133 model->setLongitudeDeg(instance->lon_deg_node->getDoubleValue());
134 if (instance->lat_deg_node != 0)
135 model->setLatitudeDeg(instance->lat_deg_node->getDoubleValue());
136 if (instance->elev_ft_node != 0)
137 model->setElevationFt(instance->elev_ft_node->getDoubleValue());
139 // Optionally set orientation from properties
140 if (instance->roll_deg_node != 0)
141 model->setRollDeg(instance->roll_deg_node->getDoubleValue());
142 if (instance->pitch_deg_node != 0)
143 model->setPitchDeg(instance->pitch_deg_node->getDoubleValue());
144 if (instance->heading_deg_node != 0)
145 model->setHeadingDeg(instance->heading_deg_node->getDoubleValue());
147 instance->model->update();
152 FGModelMgr::add_instance (Instance * instance)
154 _instances.push_back(instance);
158 FGModelMgr::remove_instance (Instance * instance)
160 vector<Instance *>::iterator it;
161 for (it = _instances.begin(); it != _instances.end(); it++) {
162 if (*it == instance) {
163 _instances.erase(it);
173 // ssgSetNearFar(_nearplane, _farplane);
174 // ssgCullAndDraw(_scene);
179 ////////////////////////////////////////////////////////////////////////
180 // Implementation of FGModelMgr::Instance
181 ////////////////////////////////////////////////////////////////////////
183 FGModelMgr::Instance::Instance ()
194 FGModelMgr::Instance::~Instance ()
196 // Unregister that one at the scenery manager
197 globals->get_scenery()->unregister_placement_transform(model->getTransform());
202 // end of modelmgr.cxx