ossimVectorRenderer.h

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//*******************************************************************
//
// License:  See top level LICENSE.txt file.
// 
// Author:  David Burken
// 
// Description:
//
// Abstract class for rendering vector data.  Derived classes should implement
// the "rasterizeVectorData" data method.
//               
//*******************************************************************
// $Id: ossimVectorRenderer.h 15766 2009-10-20 12:37:09Z gpotts $
#ifndef ossimVectorRenderer_HEADER
#define ossimVectorRenderer_HEADER

#include <ossim/imaging/ossimImageSourceFilter.h>
#include <ossim/base/ossimDrect.h>
#include <ossim/base/ossimDpt3d.h>

class ossimImageViewTransform;
class ossimImageData;

class ossimVectorRenderer : public ossimImageSourceFilter
{
public:
   ossimVectorRenderer();
   ossimVectorRenderer(ossimImageSource* inputSource,
                       ossimImageViewTransform *transform = NULL);
      
   virtual ossimImageData* renderVectorData() const = 0;

   virtual vector<ossimDpt3d> getObject(ossim_uint32 index) const = 0;
   
   virtual bool saveState(ossimKeywordlist& kwl,
                          const char* prefix=0)const;
   
   virtual bool loadState(const ossimKeywordlist& kwl,
                          const char* prefix=0);

   virtual void setImageViewTransform(ossimImageViewTransform* transform);

   virtual void setAreaOfInterest(const ossimDrect& aoi);

   virtual ossimDrect getAreaOfInterest() const;

   virtual ossimDrect getBoundingRect(long resLevel=0)const;

   virtual ossim_int32 getNumberOfAoiObjects() const;

   virtual ossim_int32 getNumberOfObjects() const;

protected:
   virtual ~ossimVectorRenderer();
   
   virtual void setBoundingRect(ossimDrect& rect);

   virtual void setNumberOfAoiObjects(ossim_int32 number_of_objects);
 
   virtual void setNumberOfObjects(ossim_int32 number_of_objects);
   
private:

   ossimImageViewTransform*  theImageViewTransform;
   ossimDrect                theBoundingRect;
   ossimDrect                theAreaOfInterest;
   ossim_int32               theNumberOfAoiObjects;
   ossim_int32               theNumberOfObjects;
   
TYPE_DATA
};

#endif