DtGridLinesDrawer.h

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/*****************************************************************************
 * Copyright (c) 2010 MAK Technologies, Inc.
 * All rights reserved.
 *****************************************************************************/
/*****************************************************************************
 * $RCSfile: DtGridLinesDrawer.h,v $ $Revision: 1.17 $ $State: Exp $
 *****************************************************************************/


#pragma once

#include <vrvOsg/vrvOsg.h>

#include <makArchives/DtGridLinesSettingsRecord.h>
#include <vrvCore/DtGridLinesParameters.h>

#include <vrvGraphics/DtFont.h>
#include <vrvGraphics/DtFontManager.h>

#include <osg/Matrix>

namespace makVrv 
{

   class DtDe;
   class DtOsgChannel;
   class DtOverlayRenderer;

   class DT_DLL_VRVOSG DtGridLinesDrawer
      : public DtGridLinesParameters
   {
   public:

      DtGridLinesDrawer( DtDe& de );

      virtual ~DtGridLinesDrawer();

      virtual void setChannel( DtOsgChannel* channel );

      virtual void setChannelDimensions( int startChannelX, int startChannelY,
         int endChannelX, int endChannelY );

      virtual void setupOverlay();

      virtual void setupFont();

      virtual double lookupClosestLatLonSpacing( double minimumSpacingRadians );

      virtual double lookupClosestCartesianSpacing( double minimumSpacing );

      void setPixelRatio(float pixelRatio);

   protected:
      virtual void reloadTextFonts() = 0;

      static bool clip( double xMin, double xMax, double yMin, double yMax, 
         double x0src, double y0src, double x1src, double y1src, 
         double &x0clip, double &y0clip, double &x1clip, double &y1clip);   

   private:

      DtGridLinesDrawer( const DtGridLinesDrawer& orig );

      DtGridLinesDrawer& operator = ( const DtGridLinesDrawer& rhs );

   protected:

      DtDe& myDe;
      DtOsgChannel* myChannel;
      osg::Matrix myWorldToWindowMatrix;

      int myStartChannelX;
      int myStartChannelY;
      int myEndChannelX;
      int myEndChannelY;
      
      DtOverlayRenderer* myOverlayRenderer;
      DtFontSP myFont;
      float myPixelRatio;

      std::vector<double> myLatLonAllowableSpacings;
      std::vector<double> myCartesianAllowableSpacings;

   };

}