/// <summary>
/// Simple wrapper for Death Reckoning alhorithm
/// </summary>
/// <param name="inPixels">In pixels.</param>
/// <param name="width">Width.</param>
/// <param name="height">Height.</param>
/// <param name="resultPixels">Result pixels.</param>
/// <param name="vectorWidth">Vector width.</param>
private static void ProcessDR(int[] inPixels, int width, int height, int[] resultPixels, int vectorWidth)
{
byte[] data = new byte[width * height];
for (int i = 0; i < data.Length; i++)
{
int pixel = inPixels[i];
if (((pixel >> 16) & 0xff) != 0)
{
data[i] = 0;
}
else
{
data[i] = 255;
}
}
DeadReckoning dr = new DeadReckoning(data, width, height);
float[] values = dr.Transform(255);
for (int i = 0; i < values.Length; i++)
{
float nvalue = values[i] / vectorWidth;
if (nvalue < -1.0f)
{
continue;
}
if (nvalue > 1.0f)
{
nvalue = 1.0f;
}
nvalue = nvalue * 0.5f + 0.5f;
int ivalue = (int)(nvalue * 255.0f) & 0xff;
resultPixels[i] = (int)((ivalue << 16) | (ivalue << 8) | (ivalue) | (ivalue << 24));
}
}
public static float[] AnalyzeGrayscale(byte[] pixelData, int imageWidth, int imageHeight, int[][] closestPoints = null, bool extraPass = true, byte threshold = 0)
{
byte[] data = new byte[imageWidth * imageHeight];
for (int i = 0; i < data.Length; i++)
{
int pixel = pixelData[i];
if (pixel > threshold)
{
data[i] = 255;
}
else
{
data[i] = 0;
}
}
DeadReckoning dr = new DeadReckoning(data, imageWidth, imageHeight);
return(dr.Transform(float.MaxValue, closestPoints));
}