SubtreeTracker.hpp

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/***********************************
   Copyright 2018 Ravishankar Mathur

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
***********************************/

#ifndef _OF_SUBTREETRACKER_
#define _OF_SUBTREETRACKER_

#include <OpenFrames/Export.h>
#include <OpenFrames/FrameTracker.hpp>
#include <osg/ref_ptr>
#include <map>

namespace OpenFrames
{
  class ReferenceFrame;

  class OF_EXPORT SubtreeTracker : public FrameTracker
  {
    typedef std::map<std::string, ReferenceFrame* > FrameMap;

  public:
    SubtreeTracker();
    SubtreeTracker( ReferenceFrame* frame );

    virtual void childAdded( ReferenceFrame* child, ReferenceFrame* parent);
    virtual void childRemoved( ReferenceFrame* child, ReferenceFrame* parent );

    virtual void setRoot( ReferenceFrame* frame );

    virtual void rescan();

    ReferenceFrame* getFrame( const std::string& name );

    void printFrameList();

  protected:
    virtual ~SubtreeTracker();

      // Function to add/remove all children of a frame to the frame list
    void _addAllChildren( ReferenceFrame* frame );
    void _removeAllChildren( ReferenceFrame* frame );

    FrameMap _frames;  // All frames being tracked
  };

} // !namespace OpenFrames

#endif  // !define _OF_SUBTREETRACKER_