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>
18 #include <simgear/structure/exception.hxx>
20 #include <Main/fg_props.hxx>
21 #include <Scenery/scenery.hxx>
24 #include "modelmgr.hxx"
29 FGModelMgr::FGModelMgr ()
30 : _models(fgGetNode("/models", true)),
31 _listener(new Listener(this))
34 _models->addChangeListener(_listener);
37 FGModelMgr::~FGModelMgr ()
39 _models->removeChangeListener(_listener);
42 for (unsigned int i = 0; i < _instances.size(); i++) {
43 globals->get_scenery()->get_models_branch()
44 ->removeKid(_instances[i]->model->getSceneGraph());
52 vector<SGPropertyNode_ptr> model_nodes = _models->getChildren("model");
54 for (unsigned int i = 0; i < model_nodes.size(); i++) {
56 add_model(model_nodes[i]);
57 } catch (const sg_throwable& t) {
58 SG_LOG(SG_GENERAL, SG_ALERT, t.getFormattedMessage() << t.getOrigin());
64 FGModelMgr::add_model (SGPropertyNode * node)
66 SG_LOG(SG_GENERAL, SG_INFO,
67 "Adding model " << node->getStringValue("name", "[unnamed]"));
68 Instance * instance = new Instance;
69 SGModelPlacement *model = new SGModelPlacement;
70 instance->model = model;
71 instance->node = node;
73 = sgLoad3DModel( globals->get_fg_root(),
74 node->getStringValue("path",
75 "Models/Geometry/glider.ac"),
77 globals->get_sim_time_sec() );
78 model->init( object );
80 // Set position and orientation either
81 // indirectly through property refs
82 // or directly with static values.
83 SGPropertyNode * child = node->getChild("longitude-deg-prop");
85 instance->lon_deg_node = fgGetNode(child->getStringValue(), true);
87 model->setLongitudeDeg(node->getDoubleValue("longitude-deg"));
89 child = node->getChild("latitude-deg-prop");
91 instance->lat_deg_node = fgGetNode(child->getStringValue(), true);
93 model->setLatitudeDeg(node->getDoubleValue("latitude-deg"));
95 child = node->getChild("elevation-ft-prop");
97 instance->elev_ft_node = fgGetNode(child->getStringValue(), true);
99 model->setElevationFt(node->getDoubleValue("elevation-ft"));
101 child = node->getChild("roll-deg-prop");
103 instance->roll_deg_node = fgGetNode(child->getStringValue(), true);
105 model->setRollDeg(node->getDoubleValue("roll-deg"));
107 child = node->getChild("pitch-deg-prop");
109 instance->pitch_deg_node = fgGetNode(child->getStringValue(), true);
111 model->setPitchDeg(node->getDoubleValue("pitch-deg"));
113 child = node->getChild("heading-deg-prop");
115 instance->heading_deg_node = fgGetNode(child->getStringValue(), true);
117 model->setHeadingDeg(node->getDoubleValue("heading-deg"));
119 // Add this model to the global scene graph
120 globals->get_scenery()->get_scene_graph()->addKid(model->getSceneGraph());
122 // Register that one at the scenery manager
123 globals->get_scenery()->register_placement_transform(model->getTransform());
126 // Save this instance for updating
127 add_instance(instance);
136 FGModelMgr::unbind ()
141 FGModelMgr::update (double dt)
143 for (unsigned int i = 0; i < _instances.size(); i++) {
144 Instance * instance = _instances[i];
145 SGModelPlacement * model = instance->model;
147 // Optionally set position from properties
148 if (instance->lon_deg_node != 0)
149 model->setLongitudeDeg(instance->lon_deg_node->getDoubleValue());
150 if (instance->lat_deg_node != 0)
151 model->setLatitudeDeg(instance->lat_deg_node->getDoubleValue());
152 if (instance->elev_ft_node != 0)
153 model->setElevationFt(instance->elev_ft_node->getDoubleValue());
155 // Optionally set orientation from properties
156 if (instance->roll_deg_node != 0)
157 model->setRollDeg(instance->roll_deg_node->getDoubleValue());
158 if (instance->pitch_deg_node != 0)
159 model->setPitchDeg(instance->pitch_deg_node->getDoubleValue());
160 if (instance->heading_deg_node != 0)
161 model->setHeadingDeg(instance->heading_deg_node->getDoubleValue());
163 instance->model->update();
168 FGModelMgr::add_instance (Instance * instance)
170 _instances.push_back(instance);
174 FGModelMgr::remove_instance (Instance * instance)
176 vector<Instance *>::iterator it;
177 for (it = _instances.begin(); it != _instances.end(); it++) {
178 if (*it == instance) {
179 _instances.erase(it);
189 // ssgSetNearFar(_nearplane, _farplane);
190 // ssgCullAndDraw(_scene);
195 ////////////////////////////////////////////////////////////////////////
196 // Implementation of FGModelMgr::Instance
197 ////////////////////////////////////////////////////////////////////////
199 FGModelMgr::Instance::Instance ()
211 FGModelMgr::Instance::~Instance ()
213 // Unregister that one at the scenery manager
214 globals->get_scenery()->unregister_placement_transform(model->getTransform());
221 ////////////////////////////////////////////////////////////////////////
222 // Implementation of FGModelMgr::Listener
223 ////////////////////////////////////////////////////////////////////////
226 FGModelMgr::Listener::childAdded(SGPropertyNode * parent, SGPropertyNode * child)
228 if (strcmp(parent->getName(), "model") || strcmp(child->getName(), "add"))
232 _mgr->add_model(parent);
233 } catch (const sg_throwable& t) {
234 SG_LOG(SG_GENERAL, SG_ALERT, t.getFormattedMessage() << t.getOrigin());
239 FGModelMgr::Listener::childRemoved(SGPropertyNode * parent, SGPropertyNode * child)
241 if (strcmp(parent->getName(), "models") || strcmp(child->getName(), "model"))
244 // search instance by node and remove it from scenegraph
245 vector<Instance *>::iterator it = _mgr->_instances.begin();
246 vector<Instance *>::iterator end = _mgr->_instances.end();
248 for (; it != end; ++it) {
249 Instance *instance = *it;
250 if (instance->node != child)
253 _mgr->_instances.erase(it);
254 globals->get_scenery()->get_scene_graph()
255 ->removeKid(instance->model->getSceneGraph());
262 // end of modelmgr.cxx