f61a6aa4e7
The DatabasePager now passes the Terrain pointer into the ReaderWriter's via osgDB::Options object, rather than pushing a NodePath containing the Terrain onto NodeVisitor. This change means that the DatabasePager nolonger needs to observer the whole NodePath and will be lighter and quicker for it. The change also means that ReadFileCallback can now run custom NodeVisitor's on the scene graph without having to worry about TerrainTile's constructing scene graphs prior to the Terrain being assigned. Also changed is the NodeVisitor::DatabaseRequestHandler which now requires a NodePath to the node that you wish to add to rather than just the pointer to the node you wish to add to. This is more robust when handling scenes with multiple parental paths, whereas previously errors could have occurred due to the default of picking the first available parental path. This change means that subclasses of DatabasePager will need to be updated to use this new function entry point.
120 lines
3.3 KiB
C++
120 lines
3.3 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#include <osg/ProxyNode>
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#include <osg/CullStack>
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#include <osg/Notify>
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using namespace osg;
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ProxyNode::ProxyNode() :
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_loadingExtReference(LOAD_IMMEDIATELY),
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_centerMode(USER_DEFINED_CENTER),
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_radius(-1)
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{
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}
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ProxyNode::ProxyNode(const ProxyNode& proxynode,const CopyOp& copyop):
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Group(proxynode,copyop),
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_filenameList(proxynode._filenameList),
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_databaseOptions(proxynode._databaseOptions),
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_databasePath(proxynode._databasePath),
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_loadingExtReference(proxynode._loadingExtReference),
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_centerMode(proxynode._centerMode),
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_userDefinedCenter(proxynode._userDefinedCenter),
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_radius(proxynode._radius)
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{
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}
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void ProxyNode::setDatabasePath(const std::string& path)
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{
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_databasePath = path;
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if (!_databasePath.empty())
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{
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char& lastCharacter = _databasePath[_databasePath.size()-1];
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const char unixSlash = '/';
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const char winSlash = '\\';
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if (lastCharacter==winSlash)
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{
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lastCharacter = unixSlash;
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}
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else if (lastCharacter!=unixSlash)
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{
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_databasePath += unixSlash;
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}
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}
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}
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void ProxyNode::traverse(NodeVisitor& nv)
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{
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if (nv.getDatabaseRequestHandler() && _filenameList.size()>_children.size() &&
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_loadingExtReference!=NO_AUTOMATIC_LOADING)
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{
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for(unsigned int i=_children.size(); i<_filenameList.size(); ++i)
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{
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nv.getDatabaseRequestHandler()->requestNodeFile(_databasePath+_filenameList[i].first, nv.getNodePath(), 1.0f, nv.getFrameStamp(), _filenameList[i].second, _databaseOptions.get());
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}
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}
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else
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{
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Group::traverse(nv);
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}
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}
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void ProxyNode::expandFileNameListTo(unsigned int pos)
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{
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if (pos>=_filenameList.size()) _filenameList.resize(pos+1);
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}
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bool ProxyNode::addChild( Node *child )
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{
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if (Group::addChild(child))
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{
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expandFileNameListTo(_children.size()-1);
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return true;
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}
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return false;
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}
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bool ProxyNode::addChild(Node *child, const std::string& filename)
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{
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if (Group::addChild(child))
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{
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setFileName(_children.size()-1,filename);
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return true;
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}
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return false;
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}
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bool ProxyNode::removeChildren(unsigned int pos,unsigned int numChildrenToRemove)
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{
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if (pos<_filenameList.size()) _filenameList.erase(_filenameList.begin()+pos, osg::minimum(_filenameList.begin()+(pos+numChildrenToRemove), _filenameList.end()) );
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return Group::removeChildren(pos,numChildrenToRemove);
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}
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BoundingSphere ProxyNode::computeBound() const
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{
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if (_centerMode==USER_DEFINED_CENTER && _radius>=0.0f)
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{
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return BoundingSphere(_userDefinedCenter,_radius);
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}
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else
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{
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return Group::computeBound();
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}
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}
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