DelayLine.cpp

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#include "StdAfx.h"
#include "IMovableItemCallback.h"
#include "ISimGUICallback.h"
#include "AnimatBase.h"

#include "DelayLine.h"

namespace AnimatSim
{

DelayLine::DelayLine()
{
        m_iDelaySize=0;
        m_iDelayComp=0;
        m_iSaveIdx=0;  
        m_iReadIdx=0;
}

DelayLine::~DelayLine()
{

try
{
        m_aryRingBuf.RemoveAll();       
}
catch(...)
{Std_TraceMsg(0, "Caught Error in desctructor of DelayLine\r\n", "", -1, false, true);}
}

void DelayLine::Initialize(float fltDelayTime, float fltTimeStep)
{
        m_iDelaySize = fltDelayTime/fltTimeStep;
        
        if(m_iDelaySize <= 0)
                m_iDelaySize = 1;

        m_iDelayComp = m_iDelaySize-1;

        m_aryRingBuf.SetSize(m_iDelaySize);
        for(int iIdx=0; iIdx<m_iDelaySize; iIdx++)
                m_aryRingBuf[iIdx] = 0;

        m_iSaveIdx = 0;
        m_iReadIdx = m_iDelayComp;
}

void DelayLine::AddValue(float fltVal)
{
        m_aryRingBuf[m_iSaveIdx] = fltVal;

        if(m_iSaveIdx == m_iDelayComp)
                m_iSaveIdx=0;
        else
                m_iSaveIdx++;
        
        if(m_iReadIdx == m_iDelayComp)
                m_iReadIdx=0;
        else
                m_iReadIdx++;
}

float DelayLine::ReadValue()
{return m_aryRingBuf[m_iReadIdx];}

}                       //AnimatSim