/**************************************************************************

	Current.h													JJS 8/26/95
	
		part of CONICAL, the Computational Neuroscience Class Library
	
	A Current is any object which attaches to a VSink and which provides
	a source of current for that VSink.

	Requires:
		VSink.h			-- header file for the VSink class
		
**************************************************************************/

#ifndef CURRENT_H
#define CURRENT_H

#include "VSink.h"

#ifndef real
#define real double
#endif

class Current
{
  public:
  
	Current( VSink *pTo, real pG=1, real pE=0 )				// constructor
	: itsTo(pTo), G(pG), E(pE) { pTo->AddCurrent(this); }
	
	virtual ~Current( void ) { itsTo->RemoveCurrent(this); }	// destructor
	
	virtual void SetE( real pE ) { E = pE; }			// setter
	
	virtual real GetE(void) const { return E; }			// inspectors
	virtual real GetEG(void) const { return G*E; }
	virtual VSink *GetTo(void) const { return itsTo; }

	// public variables:
	
	real G;
	
  protected:	
	VSink *itsTo;
	real E;
};

#endif