#ifndef _VST_DECAY_HPP_
#define _VST_DECAY_HPP_

class Decay
{
public:
  Decay(int samples,float factor=.0016);
	virtual ~Decay();
	float operator[](int sample);
private:
  void createDecay(void);
  int mSamples;
	float mSeed;
	float *mDecays;
};

inline
Decay::Decay(int samples,float factor)
: mSamples(samples), mSeed(factor), mDecays(0)
{
  createDecay();
}

inline
Decay::~Decay()
{
  if(!mDecays)return;
	::delete[] mDecays;
	mDecays=0;
}

inline
float Decay::operator[](int sample)
{
  return mDecays[sample];
}

inline
void Decay::createDecay()
{
  if(mDecays)::delete[] mDecays;
  mDecays=new float[mSamples];
	for(int index=0;index<mSamples;index++)
	{
	  if(!index)mDecays[index]=(float)(1.00-mSeed);
		else mDecays[index]=(float)((1.00-mSeed)*mDecays[index-1]);
	}
}
#endif