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class SimpleMovingAverage<Class T>
{
private T m_Sum = 0;
private int m_Pointer = 0;
private int m_Size = 0;
private ref array<T> m_Samples = new array<T>();
/**
\brief Initialize Simple Moving Average Cyclic Buffer
\param pSize \p size of the buffer
\param pDefaultValue \p initial value stored in buffer
*/
void SimpleMovingAverage(int pSize, T pDefaultValue = 0)
{
m_Size = pSize;
for (int i = 0; i < m_Size; i++)
{
m_Samples.Insert(pDefaultValue);
m_Sum += m_Samples[i];
}
}
/**
\brief Add new value and return average value from buffer
\param newSample \p value that will be added to buffer
\return average value from the buffer
@code
ref SimpleMovingAverage<float> m_Buffer = SimpleMovingAverage<float>(10, 0.5);
float sma = m_Buffer.Add(0.2);
@endcode
*/
T Add(T newSample)
{
m_Sum = m_Sum - m_Samples[m_Pointer] + newSample;
m_Samples[m_Pointer++] = newSample;
if (m_Pointer == m_Size)
{
m_Pointer = 0;
}
return m_Sum / m_Size;
}
} |