include/vrvOsg/DtOsgOverlayDirectionLineModelInstance.h

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/******************************************************************************
** Copyright (c) 2012 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once

#include <vrvOsg/vrvOsg.h>
#include <vrvOsg/DtOsgModelInstance.h>

namespace makVrv
{
   class DtLineSegment;

   class DT_DLL_VRVOSG DtOsgOverlayDirectionLineModelInstance
      : public DtOsgModelInstance
   {
   public:

      DtOsgOverlayDirectionLineModelInstance(DtDe& de);

      virtual ~DtOsgOverlayDirectionLineModelInstance();

      virtual void setVisible(bool);

      virtual void setModelSet( int modelSet );

      virtual void addPoint(const DtVector& position, int index = -1);

      virtual void setPosition(int index, const DtVector& position);

      virtual void setStipplePattern(unsigned int stipple);

      virtual void setColor(float r, float g, float b, float a);

      virtual void setWidth(float width);

      virtual void setEventsEnabled(bool, unsigned long long userData);

      bool eventsEnabled() const;

      virtual void setPositionOffset(const DtVector&);

      virtual void setDirection( int index, const DtVector& direction );

      virtual void setLength( int index, float length );

      virtual void update();

      virtual bool realize(DtModelDefinition& definition);


   protected:
      virtual void createLineIfNecessary();

      virtual void updateAttributes();

      virtual void updateGeometry();

      virtual void set3DVertexPosition( unsigned int index, double x, double y, double z );

   protected:

      struct DirectionAttributes 
      {
         DirectionAttributes()
            : direction()
            , length(0.0f)
         {
         }

         DtVector direction;
         float length;
      };


      DtVector myPoints[2];
      DirectionAttributes myDirections[2];
      unsigned int myModelSet;
      DtLineSegment* myLine;

      osg::Vec4 myColor;
      float myWidth;
      unsigned int myStipplePattern;

      bool myGeometryDirty;
      bool myAttributesDirty;
      bool myEventsEnabled;
      bool myVisibleFlag;
      unsigned long long myUserData;
      

      DtVector myPositionOffset;
   };
}