public void Render()
{
try
{
double CanvasWidth = (ActualWidth - 24) * Zoom;
double CanvasHeight = Height - 14;
CanvasPlot.Children.Clear();
if (CanvasWidth <= 0 || CanvasHeight <= 0)
{
return;
}
#region Determine axis range
ValueMin = double.MaxValue;
ValueMax = -double.MaxValue;
if (!double.IsNaN(AxisMin))
{
ValueMin = AxisMin;
}
else if (Points != null && Points.Count > 0)
{
foreach (var point in Points)
{
if (!double.IsNaN(point.Value))
{
ValueMin = Math.Min(ValueMin, point.Value);
}
}
}
else
{
ValueMin = 0;
}
if (!double.IsNaN(AxisMax))
{
ValueMax = AxisMax;
}
else if (Points != null && Points.Count > 0 && Points.Any(v => !double.IsNaN(v.Value)))
{
foreach (var point in Points)
{
if (!double.IsNaN(point.Value))
{
ValueMax = Math.Max(ValueMax, point.Value);
}
}
}
else
{
ValueMax = 1;
}
double Range = ValueMax - ValueMin;
if (ValueMin == ValueMax) // Range = 0, probably only one point
{
ValueMax += 1;
ValueMin -= 1;
}
else // Make sure there are a few pixels left to draw the points at the extremes
{
if (double.IsNaN(AxisMax))
{
ValueMax += Range / CanvasHeight * PointRadius;
}
if (double.IsNaN(AxisMin))
{
ValueMin -= Range / CanvasHeight * PointRadius;
}
}
Range = ValueMax - ValueMin;
Dispatcher.Invoke(() =>
{
string FloatFormat = "F0";
if (Math.Max(ValueMax, ValueMin) < 100)
{
FloatFormat = "F1";
}
if (Math.Max(ValueMax, ValueMin) < 10)
{
FloatFormat = "F2";
}
TextLineBottom.Text = ValueMin.ToString(FloatFormat, CultureInfo.InvariantCulture);
TextLineCenter.Text = ((ValueMin + ValueMax) * 0.5).ToString(FloatFormat, CultureInfo.InvariantCulture);
TextLineTop.Text = ValueMax.ToString(FloatFormat, CultureInfo.InvariantCulture);
});
#endregion
#region Adjust range highlight
double RangeHighlightClampedMin = Math.Max(ValueMin, RangeHighlightMin);
double RangeHighlightClampedMax = Math.Min(ValueMax, RangeHighlightMax);
PanelRangeHighlight.Margin = new Thickness(0, 7 + (ValueMax - RangeHighlightClampedMax) / Range * CanvasHeight, 0, 0);
PanelRangeHighlight.Height = Math.Max(0, RangeHighlightClampedMax - RangeHighlightClampedMin) / Range * CanvasHeight;
#endregion
if (Range < 0 || Points == null || Points.Count == 0)
{
ImagePlot.Source = null;
return;
}
float[] HistogramBins = new float[50];
DrawingGroup DGroup = new DrawingGroup();
using (DrawingContext DContext = DGroup.Open())
{
DContext.PushClip(new RectangleGeometry(new Rect(new Size(CanvasWidth, CanvasHeight))));
Pen OutlinePen = new Pen(Brushes.Transparent, 0);
OutlinePen.Freeze();
SolidColorBrush BackgroundBrush = new SolidColorBrush(Colors.Transparent);
BackgroundBrush.Freeze();
DContext.DrawRectangle(BackgroundBrush, OutlinePen, new Rect(new Size(CanvasWidth, CanvasHeight)));
SolidColorBrush[] ColorBrushes = PointColors.Count > 0
? PointColors.Select(c =>
{
SolidColorBrush Brush = new SolidColorBrush(Color.FromArgb(255, c.R, c.G, c.B));
Brush.Freeze();
return(Brush);
}).ToArray()
: new[] { new SolidColorBrush(Color.FromArgb(150, Colors.DeepSkyBlue.R, Colors.DeepSkyBlue.G, Colors.DeepSkyBlue.B)) };
StepX = (CanvasWidth - PointRadius * 2) / Points.Count;
OffsetX = StepX / 2 + PointRadius;
StepY = CanvasHeight / Range;
PointCenters = new System.Windows.Point[Points.Count];
for (int i = 0; i < Points.Count; i++)
{
if (double.IsNaN(Points[i].Value))
{
continue;
}
double X = i * StepX + OffsetX;
double Y = (ValueMax - Points[i].Value) * StepY;
DContext.DrawEllipse(ColorBrushes[Points[i].ColorID], OutlinePen, new System.Windows.Point(X, Y), PointRadius, PointRadius);
PointCenters[i] = new System.Windows.Point(X, Y);
HistogramBins[Math.Max(0, Math.Min(HistogramBins.Length - 1, (int)((Points[i].Value - ValueMin) / Range * (HistogramBins.Length - 1) + 0.5)))]++;
}
}
DrawingImage Plot = new DrawingImage(DGroup);
Plot.Freeze();
Dispatcher.Invoke(() => ImagePlot.Source = Plot);
Dispatcher.Invoke(() =>
{
float[] HistogramConv = new float[HistogramBins.Length];
float[] ConvKernel = { 0.11f, 0.37f, 0.78f, 1f, 0.78f, 0.37f, 0.11f };
for (int i = 0; i < HistogramBins.Length; i++)
{
float Sum = 0;
float Samples = 0;
for (int j = 0; j < ConvKernel.Length; j++)
{
int ij = i - 3 + j;
if (ij < 0 || ij >= HistogramBins.Length)
{
continue;
}
Sum += ConvKernel[j] * HistogramBins[ij];
Samples += ConvKernel[j];
}
HistogramConv[i] = Sum / Samples;
}
float HistogramMax = MathHelper.Max(HistogramConv);
if (HistogramMax > 0)
{
HistogramConv = HistogramConv.Select(v => v / HistogramMax * 16).ToArray();
}
Polygon HistogramPolygon = new Polygon()
{
Stroke = Brushes.Transparent,
Fill = Brushes.Gray,
Opacity = 0.15
};
PointCollection HistogramPoints = new PointCollection(HistogramConv.Length);
HistogramPoints.Add(new System.Windows.Point(16, 0));
HistogramPoints.Add(new System.Windows.Point(16, CanvasHeight));
for (int i = 0; i < HistogramConv.Length; i++)
{
double X = 15 - HistogramConv[i];
double Y = CanvasHeight - (i / (float)(HistogramConv.Length - 1) * CanvasHeight);
HistogramPoints.Add(new System.Windows.Point(X, Y));
}
HistogramPolygon.Points = HistogramPoints;
CanvasHistogram.Children.Clear();
CanvasHistogram.Children.Add(HistogramPolygon);
Canvas.SetRight(HistogramPolygon, 0);
});
}
catch
{
}
}
public void Render()
{
try
{
double CanvasWidth = ActualWidth;
double CanvasHeight = ActualHeight;
double FullRange = AxisMax * 2;
CanvasPlot.Children.Clear();
if (double.IsNaN(AxisMax))
{
return;
}
if (CanvasWidth <= 0 || CanvasHeight <= 0)
{
return;
}
if (Points == null || Points.Count == 0)
{
ImagePlot.Source = null;
return;
}
DrawingGroup DGroup = new DrawingGroup();
using (DrawingContext DContext = DGroup.Open())
{
DContext.PushClip(new RectangleGeometry(new Rect(new Size(CanvasWidth, CanvasHeight))));
Pen OutlinePen = new Pen(Brushes.Transparent, 0);
OutlinePen.Freeze();
SolidColorBrush BackgroundBrush = new SolidColorBrush(Colors.Transparent);
BackgroundBrush.Freeze();
DContext.DrawRectangle(BackgroundBrush, OutlinePen, new Rect(new Size(CanvasWidth, CanvasHeight)));
SolidColorBrush[] ColorBrushes = PointColors.Count > 0
? PointColors.Select(c =>
{
SolidColorBrush Brush = new SolidColorBrush(Color.FromArgb(120, c.R, c.G, c.B));
Brush.Freeze();
return(Brush);
}).ToArray()
: new[] { new SolidColorBrush(Color.FromArgb(150, Colors.DeepSkyBlue.R, Colors.DeepSkyBlue.G, Colors.DeepSkyBlue.B)) };
PointCenters = new System.Windows.Point[Points.Count];
for (int i = 0; i < Points.Count; i++)
{
if (double.IsNaN(Points[i].X) || double.IsNaN(Points[i].Y))
{
continue;
}
//if (Math.Abs(Points[i].X) > AxisMax || Math.Abs(Points[i].Y) > AxisMax)
// continue;
double X = Points[i].X / FullRange * CanvasWidth + CanvasWidth / 2;
double Y = Points[i].Y / FullRange * CanvasHeight + CanvasHeight / 2;
DContext.DrawEllipse(ColorBrushes[Points[i].ColorID], OutlinePen, new System.Windows.Point(X, Y), PointRadius, PointRadius);
PointCenters[i] = new System.Windows.Point(X, Y);
}
}
DrawingImage Plot = new DrawingImage(DGroup);
Plot.Freeze();
Dispatcher.Invoke(() => ImagePlot.Source = Plot);
}
catch
{
}
}