/// <summary>
/// superimposes a matrix of scores on top of a sonogram.
/// Only draws lines on every second row so that the underling sonogram can be discerned.
/// </summary>
public void OverlayMatrix(IImageProcessingContext g)
{
//int paletteSize = 256;
var pens = ImageTools.GetRedGradientPalette(); //size = 256
int rows = this.SuperimposedMatrix.GetLength(0);
int cols = this.SuperimposedMatrix.GetLength(1);
int imageHt = this.SonogramImage.Height - 1; //subtract 1 because indices start at zero
//ImageTools.DrawMatrix(DataTools.MatrixRotate90Anticlockwise(this.SuperimposedMatrix), @"C:\SensorNetworks\WavFiles\SpeciesRichness\Dev1\superimposed1.png", false);
// traverse columns - skip DC column
for (int c = 1; c < cols; c++)
{
for (int r = 0; r < rows; r++)
{
if (this.SuperimposedMatrix[r, c] == 0.0)
{
continue;
}
double normScore = this.SuperimposedMatrix[r, c] / this.superImposedMaxScore;
//int penID = (int)(paletteSize * normScore);
//if (penID >= paletteSize) penID = paletteSize - 1;
var brush = new SolidBrush(Color.Red);
g.FillRectangle(brush, r, imageHt - c, 1, 1); //THIS DRAWS A PIXEL !!!!
}
//c++; //only draw on every second row.
}
}