public void ContainsTest()
{
var range = new DoubleRange(-1.2, +3.4);
Assert.IsFalse(range.Contains(double.NegativeInfinity));
Assert.IsFalse(range.Contains(-10));
Assert.IsTrue(range.Contains(-1.2));
Assert.IsTrue(range.Contains(0.0));
Assert.IsTrue(range.Contains(+3.4));
Assert.IsFalse(range.Contains(+10));
Assert.IsFalse(range.Contains(Double.PositiveInfinity));
Assert.IsFalse(range.Contains(double.NaN));
}
public void RangeDoesContainItemUpperBounds()
{
var range1 = new DoubleRange(3, 10);
Assert.IsTrue(range1.Contains(10));
}
public void RangeDoesnotContainItemLower()
{
var range1 = new DoubleRange(3, 10);
Assert.IsFalse(range1.Contains(1));
}
public void RangeDoesContainItem()
{
var range1 = new DoubleRange(3, 10);
Assert.IsTrue(range1.Contains(5));
}
private void UpdateMarkers()
{
if (DataPointTemplate == null)
{
// This is a line chart without markers.
return;
}
double markerThreshold = MarkerThreshold;
if (!Numeric.IsNaN(markerThreshold))
{
int numberOfDataPoints = _endIndexExclusive - _startIndex;
int allowedNumberOfDataPoints = (int)(XAxis.Length * markerThreshold);
if (numberOfDataPoints > allowedNumberOfDataPoints)
{
// The number of data points exceeds the MarkerThreshold.
return;
}
}
var yAxis = YAxis;
var originY = yAxis.OriginY;
var length = yAxis.Length;
var yRange = new DoubleRange(originY - length, originY);
// Loop over data points and create markers.
for (int i = _startIndex; i < _endIndexExclusive; i++)
{
// Draw only data which is in the visible data range.
if (!yRange.Contains(_yPositions[i]))
continue;
// Create marker
DataPoint data = Data[i];
FrameworkElement marker = CreateDataPoint(data.DataContext ?? data);
if (marker == null)
return;
Canvas.Children.Add(marker);
// Save index in tag for PositionMarker().
// Alternatively, we could set the property as an attached property.
marker.Tag = i;
#if SILVERLIGHT
// In Silverlight: Position marker immediately, because some elements do not raise a
// SizeChanged event.
PositionMarker(marker);
#endif
// Position the marker as soon as it is measured.
marker.SizeChanged += MarkerSizeChanged;
}
}
public void ContainsTest()
{
var range = new DoubleRange(-1.2, +3.4);
Assert.IsFalse(range.Contains(double.NegativeInfinity));
Assert.IsFalse(range.Contains(-10));
Assert.IsTrue(range.Contains(-1.2));
Assert.IsTrue(range.Contains(0.0));
Assert.IsTrue(range.Contains(+3.4));
Assert.IsFalse(range.Contains(+10));
Assert.IsFalse(range.Contains(Double.PositiveInfinity));
Assert.IsFalse(range.Contains(double.NaN));
}