DtEnvironmentalIconCenteringUpdater.h

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/*****************************************************************************
* Copyright (c) 2017 MAK Technologies, Inc.
* All rights reserved.
*****************************************************************************/


#pragma once

#include <vrvCore/vrvCore.h>
#include <vrvCore/DtTickable.h>
#include <vrvCore/DtUniqueID.h>

#include <matrix/vlVector.h>

#include <vector>

namespace makVrv
{

   class DtDe;
   class DtSceneObject;
   class DtModel;
   class DtSceneObjectUpdater;
   class DtPolygonModel;
   class DtLineModel;

   class DT_DLL_VRVCORE DtEnvironmentalIconCenteringUpdater : public DtTickable
   {
   public:

      DtEnvironmentalIconCenteringUpdater( DtDe& de, DtUniqueID id );

      virtual ~DtEnvironmentalIconCenteringUpdater();

      virtual bool needsUpdate( DtTime tNow );

      virtual void update( DtTime tNow );

      virtual void setSceneObject( DtSceneObject* sceneObject );

      virtual void setEnvironmentalSceneObject( DtSceneObject* sceneObject );

      virtual void setOrderGroup(int);

   protected:
      virtual void centerIcon();

      virtual DtVector calculateGeometricCenter() const;

      virtual DtVector calculateLineCenter() const;

      virtual DtVector centerOnLine(int startIndex, int endIndex, double lengthOnLine) const;

   protected:

      virtual void slot_sceneObjectToBeDeleted( const DtUniqueID& id );

      virtual void slot_modelAdded(DtModel*);

      virtual void slot_modelRemoved(DtModel*);

   protected:
      DtDe& myDe;

      DtUniqueID myUniqueId;

      DtSceneObject* mySceneObject;

      DtPolygonModel* myEnvironmentalPolygonModel;
      DtLineModel* myEnvironmentalLineModel;

      DtSceneObject* myEnvironmentalSceneObject;

      std::vector<DtVector> myPoints;

      int myOrderGroup;
      bool myUpdate;

      //  When the class is destructed, the scene object may or may not 
      // exist.  Using a separate connection variable makes it possible to
      // 'disconnect' even if the scene object has been deleted.
      boost::signalslib::connection mySceneObjectConnection;
      boost::signalslib::connection myEnvironmentalSceneObjectConnection;

      boost::signalslib::connection myModelAddedConnection;
      boost::signalslib::connection myModelRemovedConnection;

   };
}