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EnvmapImage.h

///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2004, Industrial Light & Magic, a division of Lucas
// Digital Ltd. LLC
// 
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
// *       Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// *       Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
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// distribution.
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// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission. 
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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///////////////////////////////////////////////////////////////////////////

#ifndef INCLUDED_ENVMAP_IMAGE_H
#define INCLUDED_ENVMAP_IMAGE_H

//-----------------------------------------------------------------------------
//
//    class EnvmapImage
//
//-----------------------------------------------------------------------------

#include <ImfArray.h>
#include <ImfRgba.h>
#include <ImfEnvmap.h>
#include <ImathBox.h>


00050 class EnvmapImage
{
  public:

      EnvmapImage ();
      EnvmapImage (Imf::Envmap type, const Imath::Box2i &dataWindow);
      
      void                    resize (Imf::Envmap type,
                                          const Imath::Box2i &dataWindow);

      void                    clear ();

      Imf::Envmap             type () const;
      const Imath::Box2i &          dataWindow () const;

      Imf::Array2D<Imf::Rgba> &           pixels ();
      const Imf::Array2D<Imf::Rgba> &     pixels () const;
      
      Imf::Rgba               filteredLookup (Imath::V3f direction,
                                          float radius,
                                          int numSamples) const;

  private:
      
      Imf::Rgba               sample (const Imath::V2f &pos) const;

      Imf::Envmap       _type;
      Imath::Box2i            _dataWindow;
      Imf::Array2D<Imf::Rgba> _pixels;
};


#endif

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