SoPolygonScreenDrawer.h

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**=======================================================================*/
/*=======================================================================
** Author      : Thibaut Andrieu (Jan 2011)
**=======================================================================*/
 
#if !defined _SO_POLYGON_SCREEN_DRAWER_H_
#define _SO_POLYGON_SCREEN_DRAWER_H_
 
#include <Inventor/drawers/SoPolyLineScreenDrawer.h>

class  SoPolygonScreenDrawer : public SoPolyLineScreenDrawer 
{
  SO_NODE_HEADER( SoPolygonScreenDrawer );
 
public:
  SoPolygonScreenDrawer();
 
  virtual void clear() { SoPolyLineScreenDrawer::clear(); m_lastAddedPoint = SbVec2s(-1, -1); }
 
private:

  static void initClass();

  static void exitClass();
 
SoEXTENDER_Documented private:

  virtual void onKeyDown( SoHandleEventAction* action );

  virtual void onMouseMove( SoHandleEventAction* action );

  virtual void onMouseDown( SoHandleEventAction* action );

  virtual void onMouseDblClick( SoHandleEventAction* action );
 
private:

  virtual ~SoPolygonScreenDrawer();
 
private:

  inline bool isCreating() const { return m_lastAddedPoint[0] != -1 && m_lastAddedPoint[1] != -1; }

  SbVec2s m_lastAddedPoint;
 
};
 
 
#endif // _SO_POLYGON_SCREEN_DRAWER_H_