2 Copyright (C) 2001-2006, William Joseph.
5 This file is part of GtkRadiant.
7 GtkRadiant is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 GtkRadiant is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GtkRadiant; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "scenegraph.h"
24 #include "debugging/debugging.h"
30 #include "string/string.h"
31 #include "signal/signal.h"
33 #include "instancelib.h"
34 #include "treemodel.h"
36 class StringEqualPredicate
40 StringEqualPredicate(const char* string) : m_string(string)
43 bool operator()(const char* other) const
45 return string_equal(m_string, other);
49 template<std::size_t SIZE>
52 typedef const char* TypeName;
53 typedef TypeName TypeNames[SIZE];
54 TypeNames m_typeNames;
55 TypeName* m_typeNamesEnd;
58 TypeIdMap() : m_typeNamesEnd(m_typeNames)
61 TypeId getTypeId(const char* name)
63 TypeName* i = std::find_if(m_typeNames, m_typeNamesEnd, StringEqualPredicate(name));
64 if(i == m_typeNamesEnd)
66 ASSERT_MESSAGE(m_typeNamesEnd != m_typeNames + SIZE, "reached maximum number of type names supported (" << Unsigned(SIZE) << ")");
67 *m_typeNamesEnd++ = name;
69 return i - m_typeNames;
73 class CompiledGraph : public scene::Graph, public scene::Instantiable::Observer
75 typedef std::map<PathConstReference, scene::Instance*> InstanceMap;
77 InstanceMap m_instances;
78 scene::Instantiable::Observer* m_observer;
79 Signal0 m_boundsChanged;
80 scene::Path m_rootpath;
81 Signal0 m_sceneChangedCallbacks;
83 TypeIdMap<NODETYPEID_MAX> m_nodeTypeIds;
84 TypeIdMap<INSTANCETYPEID_MAX> m_instanceTypeIds;
88 CompiledGraph(scene::Instantiable::Observer* observer)
89 : m_observer(observer)
93 void addSceneChangedCallback(const SignalHandler& handler)
95 m_sceneChangedCallbacks.connectLast(handler);
99 m_sceneChangedCallbacks();
104 ASSERT_MESSAGE(!m_rootpath.empty(), "scenegraph root does not exist");
105 return m_rootpath.top();
107 void insert_root(scene::Node& root)
109 //globalOutputStream() << "insert_root\n";
111 ASSERT_MESSAGE(m_rootpath.empty(), "scenegraph root already exists");
115 Node_traverseSubgraph(root, InstanceSubgraphWalker(this, scene::Path(), 0));
117 m_rootpath.push(makeReference(root));
121 //globalOutputStream() << "erase_root\n";
123 ASSERT_MESSAGE(!m_rootpath.empty(), "scenegraph root does not exist");
125 scene::Node& root = m_rootpath.top();
129 Node_traverseSubgraph(root, UninstanceSubgraphWalker(this, scene::Path()));
138 void traverse(const Walker& walker)
140 traverse_subgraph(walker, m_instances.begin());
143 void traverse_subgraph(const Walker& walker, const scene::Path& start)
145 if(!m_instances.empty())
147 traverse_subgraph(walker, m_instances.find(PathConstReference(start)));
151 scene::Instance* find(const scene::Path& path)
153 InstanceMap::iterator i = m_instances.find(PathConstReference(path));
154 if(i == m_instances.end())
161 void insert(scene::Instance* instance)
163 m_instances.insert(InstanceMap::value_type(PathConstReference(instance->path()), instance));
165 m_observer->insert(instance);
167 void erase(scene::Instance* instance)
169 m_observer->erase(instance);
171 m_instances.erase(PathConstReference(instance->path()));
174 SignalHandlerId addBoundsChangedCallback(const SignalHandler& boundsChanged)
176 return m_boundsChanged.connectLast(boundsChanged);
178 void removeBoundsChangedCallback(SignalHandlerId id)
180 m_boundsChanged.disconnect(id);
183 TypeId getNodeTypeId(const char* name)
185 return m_nodeTypeIds.getTypeId(name);
188 TypeId getInstanceTypeId(const char* name)
190 return m_instanceTypeIds.getTypeId(name);
195 bool pre(const Walker& walker, const InstanceMap::iterator& i)
197 return walker.pre(i->first, *i->second);
200 void post(const Walker& walker, const InstanceMap::iterator& i)
202 walker.post(i->first, *i->second);
205 void traverse_subgraph(const Walker& walker, InstanceMap::iterator i)
207 Stack<InstanceMap::iterator> stack;
208 if(i != m_instances.end())
210 const std::size_t startSize = (*i).first.get().size();
213 if(i != m_instances.end()
214 && stack.size() < ((*i).first.get().size() - startSize + 1))
218 if(!pre(walker, stack.top()))
221 while(i != m_instances.end()
222 && stack.size() < ((*i).first.get().size() - startSize + 1))
230 post(walker, stack.top());
234 while(!stack.empty());
241 CompiledGraph* g_sceneGraph;
242 GraphTreeModel* g_tree_model;
245 GraphTreeModel* scene_graph_get_tree_model()
251 class SceneGraphObserver : public scene::Instantiable::Observer
254 void insert(scene::Instance* instance)
256 g_sceneGraph->sceneChanged();
257 graph_tree_model_insert(g_tree_model, *instance);
259 void erase(scene::Instance* instance)
261 g_sceneGraph->sceneChanged();
262 graph_tree_model_erase(g_tree_model, *instance);
266 SceneGraphObserver g_SceneGraphObserver;
268 void SceneGraph_Construct()
270 g_tree_model = graph_tree_model_new();
272 g_sceneGraph = new CompiledGraph(&g_SceneGraphObserver);
275 void SceneGraph_Destroy()
279 graph_tree_model_delete(g_tree_model);
283 #include "modulesystem/singletonmodule.h"
284 #include "modulesystem/moduleregistry.h"
288 scene::Graph* m_scenegraph;
290 typedef scene::Graph Type;
291 STRING_CONSTANT(Name, "*");
295 SceneGraph_Construct();
297 m_scenegraph = g_sceneGraph;
301 SceneGraph_Destroy();
303 scene::Graph* getTable()
309 typedef SingletonModule<SceneGraphAPI> SceneGraphModule;
310 typedef Static<SceneGraphModule> StaticSceneGraphModule;
311 StaticRegisterModule staticRegisterSceneGraph(StaticSceneGraphModule::instance());