/// <summary>
/// Refresh and redraw the diagram
/// </summary>
public void Refresh()
{
MainCanvas.Children.Clear(); //Clear canvas
if (SourceData != null)
{
// Size of the diagram (in canvas units):
double radius = 100;
NamedDataSet axisRanges = AxisRanges;
if (axisRanges == null)
{
axisRanges = SourceData.GetValueRanges();
}
if (MinimumAxisRange.IsValid)
{
axisRanges.UnionAll(MinimumAxisRange);
}
//Draw axes:
List <string> axes = SourceData.GetAllKeys().ToList();
axes.Sort();
for (int i = 0; i < axes.Count; i++)
{
string axisName = axes[i];
double angle = ((double)i) * (Math.PI * 2 / axes.Count);
Line axis = new Line();
axis.X2 = Math.Sin(angle) * radius;
axis.Y2 = -Math.Cos(angle) * radius;
axis.Stroke = Brushes.Black;
axis.StrokeThickness = 1;
axis.Opacity = 0.6;
axis.ToolTip = axisName;
MainCanvas.Children.Add(axis);
TextBlock tB = new TextBlock();
tB.Text = axisName;
tB.Width = radius - 3;
tB.FontSize = LabelFontSize;
if (angle <= Math.PI)
{
tB.TextAlignment = TextAlignment.Right;
var rTrans = new RotateTransform(angle * 180 / Math.PI - 90);
rTrans.CenterX = 0;
rTrans.CenterY = 0;
tB.RenderTransform = rTrans;
}
else
{
Canvas.SetRight(tB, 0);
tB.TextAlignment = TextAlignment.Left;
var rTrans = new RotateTransform(angle * 180 / Math.PI + 90);
rTrans.CenterX = radius - 3;
rTrans.CenterY = 0;
tB.RenderTransform = rTrans;
}
tB.Opacity = 0.8;
tB.ToolTip = axisName;
MainCanvas.Children.Add(tB);
}
// Draw map:
foreach (NamedDataSet dataSet in SourceData)
{
Polygon pgon = new Polygon();
Color color = ToWPF.Convert(dataSet.Colour.CapBrightness(ColourBrightnessCap));
pgon.Stroke = new SolidColorBrush(color);
pgon.StrokeThickness = 2;
pgon.StrokeLineJoin = PenLineJoin.Bevel;
Color outColor = color;
Color inColor = color;
outColor.A = 100;
inColor.A = 100;
var fill = new RadialGradientBrush(inColor, outColor);
fill.Opacity = FillOpacity;
pgon.Fill = fill;
pgon.Opacity = 0.95;
pgon.ToolTip = dataSet.Name;
PointCollection outerPts = new PointCollection();
PointCollection innerPts = new PointCollection();
bool hollow = false;
for (int i = 0; i < axes.Count; i++)
{
string axisName = axes[i];
double angle = ((double)i) * (Math.PI * 2 / axes.Count);
double value = 0;
double value2 = 0;
if (dataSet.Data.ContainsKey(axisName))
{
Interval range;
if (axisRanges.Data.ContainsKey(axisName))
{
range = axisRanges.Data[axisName];
}
else
{
range = new Interval(0, 1.0);
}
if (range.IsSingularity)
{
range = new Interval(range.Start - 0.1, range.End);
}
Interval data = dataSet.Data[axisName];
value = range.ParameterOf(data.End) * radius;
value2 = range.ParameterOf(data.Start) * radius;
if (value2 > 0.001)
{
hollow = true;
}
}
Point point = new Point(Math.Sin(angle) * value, -Math.Cos(angle) * value);
outerPts.Add(point);
Point point2 = new Point(Math.Sin(angle) * value2, -Math.Cos(angle) * value2);
innerPts.Add(point2);
}
pgon.Points = outerPts;
//TODO: Include 'hollow' polygons that have minimum values
MainCanvas.Children.Add(pgon);
}
}
}