SoPixelScaleAccess.h

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/*************************************************************************************
**
** Copyright 2013, MeVis Medical Solutions AG
**
** The user may use this file in accordance with the license agreement provided with
** the Software or, alternatively, in accordance with the terms contained in a
** written agreement between the user and MeVis Medical Solutions AG.
**
** For further information use the contact form at https://www.mevislab.de/contact
**
**************************************************************************************/
 
#ifndef SO_PIXEL_SCALE_ACCESS_H
#define SO_PIXEL_SCALE_ACCESS_H
 
// Include the DSO specific header.
#include "SoUtilsSystem.h"
 
// Include base-class header.
#include <Inventor/nodes/SoSubNode.h>
// Include field headers.
#include <Inventor/fields/SoSFFloat.h>
 
// Forward declarations
class SoGLRenderAction;
 
// Declare SoPixelScaleAccess node being a subnode of a SoNode
class SOUTILS_EXPORT SoPixelScaleAccess : public SoNode
{
   // Make a typedef of the parent type to allow easier adaptation of
   // the sourcecode if the parent node should change.
   typedef SoNode inherited;
 
   // Insert sourcecode common to all subnodes of Open-Inventor.
   SO_NODE_HEADER(SoPixelScaleAccess);
 
   public:
 
      SoSFFloat   scaleFactorOut;
 
      SoPixelScaleAccess();
 
   protected:
 
      ~SoPixelScaleAccess() override;
 
   SoEXTENDER public:
 
      void GLRender(SoGLRenderAction *action) override;
 
   SoINTERNAL public:
 
      static void initClass();
 
   private:
 
      float _prevScaleFactor;
};
 
#endif  // __SoPixelScaleAccess_H