// TrackValues.cpp: implementation of the CTrackValues class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "mixer.h"
#include "TrackValues.h"
#include <MachineInterface.h>
#include <math.h>

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif


const float CTrackValues::c_efFadingInc=0.1f;

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

void CTrackValues::Init(CMachineDataInput * const pcIn,unsigned uDataVersion)
{
	pcIn->Read(m_fLevel);
	if(uDataVersion >= 0x5)
		pcIn->Read(m_fPan);
}
void CTrackValues::Save(CMachineDataOutput * const pcOut)
{
	pcOut->Write(m_fLevel);
	pcOut->Write(m_fPan);
}
float CTrackValues::GetLevel()
{ 
	if(m_bFading) {
		float fDistance=(m_fLevel-m_fRealLevel);
		if(fabs(fDistance) <= c_efFadingInc) {
			m_bFading=false;
			m_fRealLevel=m_fLevel;
			return m_fLevel;
		}else{
			if(fDistance > 0.0f)
				m_fRealLevel+=c_efFadingInc;
			else
				m_fRealLevel-=c_efFadingInc;
			return m_fRealLevel;
		}
	}else
		return m_fLevel;
}