93 lines
3.1 KiB
C++
93 lines
3.1 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 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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#ifndef OSG_PagedLOD
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#define OSG_PagedLOD 1
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#include <osg/LOD>
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namespace osg {
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/** PagedLOD.
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*/
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class SG_EXPORT PagedLOD : public LOD
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{
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public :
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PagedLOD();
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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PagedLOD(const PagedLOD&,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
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META_Node(osg, PagedLOD);
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virtual void traverse(NodeVisitor& nv);
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virtual bool addChild(Node *child);
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virtual bool addChild(Node *child, float min, float max);
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virtual bool addChild(Node *child, float min, float max,const std::string& filename);
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virtual bool removeChild(Node *child);
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typedef std::vector<std::string> FileNameList;
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void setFileName(unsigned int childNo, const std::string& filename);
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const std::string& getFileName(unsigned int childNo) const { return _fileNameList[childNo]; }
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/** returns the number of filenames currently set. */
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inline unsigned int getNumFileNames() const { return _fileNameList.size(); }
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/** return the list of filename.*/
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inline FileNameList& getFileNameList() { return _fileNameList; }
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/** return the list of filename.*/
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inline const FileNameList& getFileNameList() const { return _fileNameList; }
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typedef std::vector<double> TimeStampList;
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void setTimeStamp(unsigned int childNo, double timeStamp);
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double getTimeStamp(unsigned int childNo) const { return _timeStampList[childNo]; }
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/** returns the number of filenames currently set. */
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inline unsigned int getNumTimeStamps() const { return _fileNameList.size(); }
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/** return the list of time stamps.*/
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inline TimeStampList& getTimeStampList() { return _timeStampList; }
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/** return the list of time stamps.*/
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inline const TimeStampList& getTimeStampList() const { return _timeStampList; }
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/** Remove the children from the PagedLOD which haven't be visited since specified expiry time.
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The removed children are added the removeChildren list passed into the method,
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this allows the children to be deleted later at the callers discression.*/
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void removeExpiredChildren(double expiryTime,NodeList& removedChildren);
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protected :
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virtual ~PagedLOD() {}
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FileNameList _fileNameList;
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TimeStampList _timeStampList;
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};
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}
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#endif
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