/// <summary>
/// draws the main graph section
/// </summary>
private void DrawGraph(DrawingContext drawingContext)
{
if (NetworkFrames.Count <= 1)
{
return;
}
RenderOptions.SetEdgeMode(this, EdgeMode.Unspecified);
int x = (int)ActualWidth - 1;
double yMin = ActualHeight - 1;
double yRange = yMin - 3;
DesiredNetworkBufferSize = x;
NetworkFrame[] frames = NetworkFrames.Take(x).ToArray();
double[] up = new double[Math.Min(x, frames.Length)];
double[] down = new double[Math.Min(x, frames.Length)];
double range = 0;
if (RenderMode == RenderingMode.Average && up.Length > c_rollingAveragingRange)
{
int i = 0;
DropOutStack <double> upStack = new DropOutStack <double>(c_rollingAveragingRange);
DropOutStack <double> downStack = new DropOutStack <double>(c_rollingAveragingRange);
foreach (NetworkFrame frame in frames)
{
if (i > up.Length)
{
break;
}
upStack.Push(frame.Upload);
downStack.Push(frame.Download);
up[i] = Math.Max(frame.Upload, CalculateRollingAverage(upStack));
down[i] = Math.Max(frame.Download, CalculateRollingAverage(downStack));
range = Math.Max(up[i], Math.Max(down[i], range));
i++;
}
}
else if (RenderMode == RenderingMode.AverageMoving && up.Length > c_movingAveragingRange)
{
int i = 0;
DropOutStack <double> upStack = new DropOutStack <double>(c_movingAveragingRange);
DropOutStack <double> downStack = new DropOutStack <double>(c_movingAveragingRange);
foreach (NetworkFrame frame in frames)
{
if (i > up.Length)
{
break;
}
upStack.Push(frame.Upload);
downStack.Push(frame.Download);
up[i] = Math.Max(frame.Upload, CalculateMovingAverage(upStack));
down[i] = Math.Max(frame.Download, CalculateMovingAverage(downStack));
range = Math.Max(up[i], Math.Max(down[i], range));
i++;
}
}
else if (RenderMode == RenderingMode.Smart && up.Length > c_movingAveragingRange && up.Length > c_rollingAveragingRange)
{ // Combine both average and moving average
int i = 0;
DropOutStack <double> upStack = new DropOutStack <double>(Math.Max(c_movingAveragingRange, c_rollingAveragingRange));
DropOutStack <double> downStack = new DropOutStack <double>(Math.Max(c_movingAveragingRange, c_rollingAveragingRange));
foreach (NetworkFrame frame in frames)
{
if (i > up.Length)
{
break;
}
upStack.Push(frame.Upload);
downStack.Push(frame.Download);
up[i] = Math.Max(CalculateRollingAverage(upStack), CalculateMovingAverage(upStack));
down[i] = Math.Max(CalculateRollingAverage(downStack), CalculateMovingAverage(downStack));
range = Math.Max(up[i], Math.Max(down[i], range));
i++;
}
}
else if (RenderMode == RenderingMode.Thick && up.Length > c_maxedAveragingRange)
{
int i = 0;
DropOutStack <double> upStack = new DropOutStack <double>(c_maxedAveragingRange);
DropOutStack <double> downStack = new DropOutStack <double>(c_maxedAveragingRange);
foreach (NetworkFrame frame in frames)
{
if (i >= up.Length)
{
break;
}
upStack.Push(frame.Upload);
downStack.Push(frame.Download);
up[i] = upStack.Max();
down[i] = downStack.Max();
range = Math.Max(up[i], Math.Max(down[i], range));
i++;
}
}
else // RenderMode == RenderingMode.Direct
{
int i = 0;
foreach (NetworkFrame frame in frames)
{
if (i > up.Length)
{
break;
}
up[i] = frame.Upload;
down[i] = frame.Download;
range = Math.Max(up[i], Math.Max(down[i], range));
i++;
}
}
for (int i = 0; i < up.Length - 1; i++)
{
double barRange = down[i] / range;
drawingContext.DrawLine(m_downloadPen, new Point(x, yMin), new Point(x, yMin - (yRange * barRange)));
barRange = up[i] / range;
drawingContext.DrawLine(m_uploadPen, new Point(x, yMin), new Point(x, yMin - (yRange * barRange)));
x -= 1;
}
RenderOptions.SetEdgeMode(this, EdgeMode.Aliased);
}