public static float GetValueFromArray(float[] data, int index, EPaddleType paddleType)
{
if (index >= 0 && index < data.Length)
{
return(data[index]);
}
else
{
switch (paddleType)
{
case EPaddleType.Zero:
return(0);
case EPaddleType.Repeat:
return(index < 0 ? data[0] : data[data.Length - 1]);
case EPaddleType.Loop:
int actualIndex = index;
while (actualIndex < 0)
{
actualIndex += data.Length;
}
actualIndex %= data.Length;
return(data[actualIndex]);
default:
return(0);
}
}
}
/// <summary>
/// Convolute data and filter. Result is sent to output, which must not be shorter than data.
/// </summary>
/// <param name="output">Array to store output. Must not be shorter than data.</param>
/// <param name="data">Source data array.</param>
/// <param name="filter">Filter array.</param>
/// <param name="paddleType">Paddle type.</param>
public static void Convolute(float[] data, float[] filter, EPaddleType paddleType, float[] output)
{
int filterMiddlePoint = Mathf.FloorToInt(filter.Length / 2);
for (int n = 0; n < data.Length; ++n)
{
output[n] = 0.0f;
for (int m = 0; m < filter.Length; ++m)
{
output[n] += MathToolBox.GetValueFromArray(data, n - filterMiddlePoint + m, paddleType) * filter[filter.Length - m - 1];
}
}
}
