2 #include "NasalModelData.hxx"
3 #include "NasalSys.hxx"
4 #include <Main/globals.hxx>
6 #include <simgear/math/SGMath.hxx>
7 #include <simgear/nasal/cppbind/Ghost.hxx>
8 #include <simgear/scene/util/OsgMath.hxx>
9 #include <simgear/debug/logstream.hxx>
11 #include <osg/Transform>
13 #include <boost/bind.hpp>
16 #include <cstring> // for strlen
18 // FGNasalModelData class. If sgLoad3DModel() is called with a pointer to
19 // such a class, then it lets modelLoaded() run the <load> script, and the
20 // destructor the <unload> script. The latter happens when the model branch
21 // is removed from the scene graph.
23 unsigned int FGNasalModelData::_max_module_id = 0;
24 FGNasalModelDataList FGNasalModelData::_loaded_models;
26 typedef osg::ref_ptr<osg::Node> NodeRef;
27 typedef nasal::Ghost<NodeRef> NasalNode;
30 * Get position (lat, lon, elevation) and orientation (heading, pitch, roll) of
33 static naRef f_node_getPose( const osg::Node& node,
34 const nasal::CallContext& ctx )
36 osg::NodePathList parent_paths = node.getParentalNodePaths();
37 for( osg::NodePathList::const_iterator path = parent_paths.begin();
38 path != parent_paths.end();
41 osg::Matrix local_to_world = osg::computeLocalToWorld(*path);
42 if( !local_to_world.valid() )
45 SGGeod coord = SGGeod::fromCart( toSG(local_to_world.getTrans()) );
46 if( !coord.isValid() )
49 osg::Matrix local_frame = makeZUpFrameRelative(coord),
51 inv_local.invert_4x3(local_frame);
52 local_to_world.postMult(inv_local);
54 SGQuatd rotate = toSG(local_to_world.getRotate());
55 double hdg, pitch, roll;
56 rotate.getEulerDeg(hdg, pitch, roll);
58 nasal::Hash pose(ctx.to_nasal(coord), ctx.c);
59 pose.set("heading", hdg);
60 pose.set("pitch", pitch);
61 pose.set("roll", roll);
62 return pose.get_naRef();
68 //------------------------------------------------------------------------------
69 FGNasalModelData::FGNasalModelData( SGPropertyNode *root,
70 const std::string& path,
73 SGPropertyNode* unload,
76 _root(root), _prop(prop),
77 _load(load), _unload(unload),
79 _module_id( _max_module_id++ )
81 _loaded_models.push_back(this);
87 "New model with attached script(s) (branch = " << branch << ")"
91 //------------------------------------------------------------------------------
92 FGNasalModelData::~FGNasalModelData()
94 _loaded_models.remove(this);
100 "Removed model with script(s) (branch = " << _branch << ")"
104 //------------------------------------------------------------------------------
105 void FGNasalModelData::load()
108 m << "__model" << _module_id;
111 SG_LOG(SG_NASAL, SG_DEBUG, "Loading nasal module " << _module.c_str());
113 const char *s = _load ? _load->getStringValue() : "";
114 FGNasalSys* nasalSys = (FGNasalSys*) globals->get_subsystem("nasal");
116 // Add _module_id to script local hash to allow placing canvasses on objects
118 nasal::Hash module = nasalSys->getGlobals().createHash(_module);
119 module.set("_module_id", _module_id);
121 if( !NasalNode::isInit() )
123 NasalNode::init("osg.Node")
124 .method("getPose", &f_node_getPose);
127 module.set("_model", NodeRef(_branch));
130 arg[0] = nasalSys->propNodeGhost(_root);
131 arg[1] = nasalSys->propNodeGhost(_prop);
132 nasalSys->createModule(_module.c_str(), _path.c_str(), s, strlen(s),
136 //------------------------------------------------------------------------------
137 void FGNasalModelData::unload()
142 FGNasalSys* nasalSys = (FGNasalSys*) globals->get_subsystem("nasal");
144 SG_LOG(SG_NASAL, SG_WARN, "Trying to run an <unload> script "
145 "without Nasal subsystem present.");
149 SG_LOG(SG_NASAL, SG_DEBUG, "Unloading nasal module " << _module.c_str());
153 const char *s = _unload->getStringValue();
154 nasalSys->createModule(_module.c_str(), _module.c_str(), s, strlen(s), _root);
157 nasalSys->deleteModule(_module.c_str());
160 //------------------------------------------------------------------------------
161 osg::Node* FGNasalModelData::getNode()
166 //------------------------------------------------------------------------------
167 FGNasalModelData* FGNasalModelData::getByModuleId(unsigned int id)
169 FGNasalModelDataList::iterator it = std::find_if
171 _loaded_models.begin(),
172 _loaded_models.end(),
173 boost::bind(&FGNasalModelData::_module_id, _1) == id
176 if( it != _loaded_models.end() )
182 //------------------------------------------------------------------------------
183 FGNasalModelDataProxy::~FGNasalModelDataProxy()
185 FGNasalSys* nasalSys = (FGNasalSys*) globals->get_subsystem("nasal");
186 // when necessary, register Nasal module to be destroyed/unloaded
187 // in the main thread.
188 if ((_data.valid())&&(nasalSys))
189 nasalSys->registerToUnload(_data);
192 //------------------------------------------------------------------------------
193 void FGNasalModelDataProxy::modelLoaded( const std::string& path,
194 SGPropertyNode *prop,
200 SGPropertyNode *nasal = prop->getNode("nasal");
204 FGNasalSys* nasalSys = (FGNasalSys*) globals->get_subsystem("nasal");
211 "Can not load model script(s) (Nasal subsystem not available)."
216 SGPropertyNode* load = nasal->getNode("load");
217 SGPropertyNode* unload = nasal->getNode("unload");
219 if ((!load) && (!unload))
222 _data = new FGNasalModelData(_root, path, prop, load, unload, branch);
224 // register Nasal module to be created and loaded in the main thread.
225 nasalSys->registerToLoad(_data);