Create initial class placeholders for main volume rendering classes

src/osgVolume/Volume.cpp

@@ -0,0 +1,114 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2008 Robert Osfield 
+ *
+ * This library is open source and may be redistributed and/or modified under  
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
+ * OpenSceneGraph Public License for more details.
+*/
+
+#include <osgVolume/Volume>
+#include <OpenThreads/ScopedLock>
+
+using namespace osgVolume;
+
+Volume::Volume()
+{
+}
+
+Volume::Volume(const Volume& ts, const osg::CopyOp& copyop):
+    osg::Group(ts,copyop)
+{
+}
+
+
+Volume::~Volume()
+{
+    OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
+
+    for(BrickSet::iterator itr = _brickSet.begin();
+        itr != _brickSet.end();
+        ++itr)
+    {
+        const_cast<Brick*>(*itr)->_volume = 0;
+    }
+    
+    _brickSet.clear();
+    _brickMap.clear();
+}
+
+void Volume::traverse(osg::NodeVisitor& nv)
+{
+    Group::traverse(nv);
+}
+
+Brick* Volume::getBrick(const BrickID& BrickID)
+{
+    OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
+
+    BrickMap::iterator itr = _brickMap.find(BrickID);
+    if (itr != _brickMap.end()) return 0;
+    
+    return itr->second;
+}
+
+const Brick* Volume::getBrick(const BrickID& BrickID) const
+{
+    OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
+
+    BrickMap::const_iterator itr = _brickMap.find(BrickID);
+    if (itr != _brickMap.end()) return 0;
+    
+    return itr->second;
+}
+
+void Volume::dirtyRegisteredBricks()
+{
+    OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
+
+    for(BrickSet::iterator itr = _brickSet.begin();
+        itr != _brickSet.end();
+        ++itr)
+    {
+        (const_cast<Brick*>(*itr))->setDirty(true);
+    }
+}
+
+static unsigned int s_maxNumBricks = 0;
+void Volume::registerBrick(Brick* Brick)
+{
+    if (!Brick) return;
+
+    OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
+    
+    if (Brick->getBrickID().valid())
+    {
+        _brickMap[Brick->getBrickID()] = Brick;
+    }
+    
+    _brickSet.insert(Brick);
+
+    if (_brickSet.size() > s_maxNumBricks) s_maxNumBricks = _brickSet.size();
+
+    // osg::notify(osg::NOTICE)<<"Volume::registerBrick "<<Brick<<" total number of Brick "<<_brickSet.size()<<" max = "<<s_maxNumBricks<<std::endl;
+}
+
+void Volume::unregisterBrick(Brick* Brick)
+{
+    if (!Brick) return;
+
+    OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
+
+    if (Brick->getBrickID().valid())
+    {
+        _brickMap.erase(Brick->getBrickID());
+    }
+    
+    _brickSet.erase(Brick);
+
+    // osg::notify(osg::NOTICE)<<"Volume::unregisterBrick "<<Brick<<" total number of Brick "<<_brickSet.size()<<" max = "<<s_maxNumBricks<<std::endl;
+}