private void CreateGraph(ZedGraphControl zgc)
{
// Get a reference to the GraphPane
GraphPane myPane = zgc.GraphPane;
// Set the Titles
myPane.Title.Text = "Intensity Histogram";
myPane.XAxis.Title.Text = "Intensity";
myPane.YAxis.Title.Text = "Count";
TileView viewer = this.mosaicWindow.TileView;
List <Tile> tiles = viewer.GetVisibleTiles();
if (tiles == null)
{
return;
}
int[] total_red_hist = new int[256];
int[] total_green_hist = new int[256];
int[] total_blue_hist = new int[256];
ulong[] total_hist = new ulong[256];
int[] red_hist = null;
int[] green_hist = null;
int[] blue_hist = null;
ulong[] hist = null;
bool colourImage = false;
if (MosaicWindow.MosaicInfo.ColorDepth >= 24)
{
colourImage = true;
}
for (int i = 0; i < total_red_hist.Length; i++)
{
total_red_hist[i] = 0;
total_green_hist[i] = 0;
total_blue_hist[i] = 0;
}
double max_posible_intensity_in_images = 0.0;
foreach (Tile tile in tiles)
{
if (tile.IsDummy)
{
continue;
}
FreeImageAlgorithmsBitmap dib = tile.LoadFreeImageBitmap();
if (dib.MaximumPossibleIntensityValue > max_posible_intensity_in_images)
{
max_posible_intensity_in_images = dib.MaximumPossibleIntensityValue;
}
if (colourImage)
{
dib.GetHistogram(FREE_IMAGE_COLOR_CHANNEL.FICC_RED, out red_hist);
dib.GetHistogram(FREE_IMAGE_COLOR_CHANNEL.FICC_GREEN, out green_hist);
dib.GetHistogram(FREE_IMAGE_COLOR_CHANNEL.FICC_BLUE, out blue_hist);
}
else
{
dib.GetGreyLevelHistogram(256, out hist);
}
dib.Dispose();
for (int i = 0; i < total_red_hist.Length; i++)
{
if (colourImage)
{
total_red_hist[i] += red_hist[i];
total_green_hist[i] += green_hist[i];
total_blue_hist[i] += blue_hist[i];
}
else
{
total_hist[i] += hist[i];
}
}
}
double range_per_bin = max_posible_intensity_in_images / 256;
double x, y;
PointPairList red_list = new PointPairList();
PointPairList green_list = new PointPairList();
PointPairList blue_list = new PointPairList();
if (colourImage)
{
for (int i = 0; i < total_red_hist.Length; i++)
{
x = (double)i;
y = (double)total_red_hist[i];
red_list.Add(x, y);
y = (double)total_green_hist[i];
green_list.Add(x, y);
y = (double)total_blue_hist[i];
blue_list.Add(x, y);
}
// Generate a red curve with diamond
LineItem red_curve = myPane.AddCurve("",
red_list, Color.Red, SymbolType.None);
LineItem green_curve = myPane.AddCurve("",
green_list, Color.Green, SymbolType.None);
LineItem blue_curve = myPane.AddCurve("",
blue_list, Color.Blue, SymbolType.None);
}
else
{
for (int i = 0; i < total_red_hist.Length; i++)
{
x = (double)(i * range_per_bin);
y = (double)total_hist[i];
red_list.Add(x, y);
}
// Generate a red curve with diamond
// symbols, and "Porsche" in the legend
BarItem curve = myPane.AddBar("",
red_list, Color.Black);
}
zgc.AxisChange();
}