111 lines
3.0 KiB
C++
111 lines
3.0 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2009 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 <osgVolume/VolumeTechnique>
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#include <osgVolume/VolumeTile>
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using namespace osgVolume;
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VolumeTechnique::VolumeTechnique():
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_volumeTile(0)
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{
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setThreadSafeRefUnref(true);
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}
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VolumeTechnique::VolumeTechnique(const VolumeTechnique& rhs,const osg::CopyOp& copyop):
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osg::Object(rhs,copyop),
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_volumeTile(0)
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{
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}
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VolumeTechnique::~VolumeTechnique()
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{
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}
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void VolumeTechnique::init()
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{
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OSG_NOTICE<<className()<<"::initialize(..) not implemented yet"<<std::endl;
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}
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void VolumeTechnique::update(osgUtil::UpdateVisitor* uv)
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{
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OSG_NOTICE<<className()<<"::update(..) not implemented yet"<<std::endl;
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if (_volumeTile) _volumeTile->osg::Group::traverse(*uv);
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}
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void VolumeTechnique::cull(osgUtil::CullVisitor* cv)
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{
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OSG_NOTICE<<className()<<"::cull(..) not implemented yet"<<std::endl;
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if (_volumeTile) _volumeTile->osg::Group::traverse(*cv);
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}
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void VolumeTechnique::cleanSceneGraph()
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{
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OSG_NOTICE<<className()<<"::cleanSceneGraph(..) not implemented yet"<<std::endl;
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}
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void VolumeTechnique::traverse(osg::NodeVisitor& nv)
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{
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if (!_volumeTile) return;
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// if app traversal update the frame count.
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if (nv.getVisitorType()==osg::NodeVisitor::UPDATE_VISITOR)
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{
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if (_volumeTile->getDirty()) _volumeTile->init();
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osgUtil::UpdateVisitor* uv = nv.asUpdateVisitor();
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if (uv)
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{
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update(uv);
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return;
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}
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}
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else if (nv.getVisitorType()==osg::NodeVisitor::CULL_VISITOR)
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{
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osgUtil::CullVisitor* cv = nv.asCullVisitor();
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if (cv)
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{
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cull(cv);
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return;
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}
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}
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if (_volumeTile->getDirty()) _volumeTile->init();
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// otherwise fallback to the Group::traverse()
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_volumeTile->osg::Group::traverse(nv);
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}
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bool VolumeTechnique::isMoving(osgUtil::CullVisitor* cv)
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{
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bool moving = false;
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
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ModelViewMatrixMap::iterator itr = _modelViewMatrixMap.find(cv->getIdentifier());
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if (itr!=_modelViewMatrixMap.end())
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{
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osg::Matrix newModelViewMatrix = *(cv->getModelViewMatrix());
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osg::Matrix& previousModelViewMatrix = itr->second;
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moving = (newModelViewMatrix != previousModelViewMatrix);
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previousModelViewMatrix = newModelViewMatrix;
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}
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else
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{
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_modelViewMatrixMap[cv->getIdentifier()] = *(cv->getModelViewMatrix());
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}
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return moving;
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}
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