ZtRubberRay.H

/* ZtRubberRay.H */
/* $Id: ZtRubberRay.H,v 3.3 2004/02/17 13:53:37 vlad Exp $ */
#ifndef __ZtRubberRay_H
#define __ZtRubberRay_H

#include <zm/ZtObject.H>


class ZtRubberRay : public ZtObject
{
public:

  ZtRubberRay (ZtMain* pManager,
           ZGroupId pxid, ZGroupId pyid,
           ZGroupId nxid, ZGroupId nyid);

  virtual void  ray (float direction[2], int button_id, Logic pressed);

  /* Event processing status:
     ziProcessed - if event processing has been finished (ungrab input);
     ziGrabInput - if event processing must be continued (grab input);
     ziSkipped - if this event is not processed. */
  virtual ZInputStatus  input (const XEvent* xev);

  virtual void  redraw ()
    {};


  virtual void  set_base (const float base[2]);

  virtual void  get_base (float base[2]) const;

  virtual const char*   class_id () const;

private:

  ZPoint    current;    
  float     nc_base[2]; 
protected:

  Logic     drawn;      
  void      draw_rubber_ray (const ZPoint& point);

  void      prolongate_ray (const float nc_base[2],
                const float nc_point[2],
                float nc_prolong[2]);
};


#endif /* ZtRubberRay.H */