internal virtual double GetDistanceToPoint(DataPoint dataPoint, Point tapLocation, ChartPointDistanceCalculationMode pointDistanceMode)
{
var dataPointLocation = dataPoint.Center();
if (pointDistanceMode == ChartPointDistanceCalculationMode.TwoDimensional)
{
////TODO: Math.Sqrt could lead to potential performance issues with lost of points/series.
return(RadMath.GetPointDistance(dataPointLocation.X, tapLocation.X, dataPointLocation.Y, tapLocation.Y));
}
else
{
AxisPlotDirection plotDirection = this.Model.GetTypedValue <AxisPlotDirection>(AxisModel.PlotDirectionPropertyKey, AxisPlotDirection.Vertical);
if (plotDirection == AxisPlotDirection.Vertical)
{
return(Math.Abs(tapLocation.X - dataPointLocation.X));
}
else
{
return(Math.Abs(tapLocation.Y - dataPointLocation.Y));
}
}
}
private static bool TryClipToContainerTop(ref RadLine line, RadRect container, double topIntersectionX, double dashPatternLength, double angle)
{
bool intersectsWithRect = false;
if (container.X <= topIntersectionX && topIntersectionX <= container.Right)
{
if (line.Y1 < line.Y2 && line.Y1 < container.Y)
{
intersectsWithRect = true;
var lengthToAdd = RadMath.GetPointDistance(topIntersectionX, line.X1, container.Y, line.Y1) % dashPatternLength;
line.X1 = topIntersectionX + lengthToAdd * Math.Cos(angle);
line.Y1 = container.Y - lengthToAdd * Math.Sin(angle);
}
else if (line.Y2 < line.Y1 && line.Y2 < container.Y)
{
intersectsWithRect = true;
line.X2 = topIntersectionX;
line.Y2 = container.Y;
}
}
return(intersectsWithRect);
}
private static bool TryClipToContainerBottom(ref RadLine line, RadRect container, double bottomIntersectionX, double dashPatternLength, double angle)
{
bool intersectsWithRect = false;
if (container.X <= bottomIntersectionX && bottomIntersectionX <= container.Right)
{
if (line.Y1 < line.Y2 && line.Y2 > container.Bottom)
{
intersectsWithRect = true;
line.X2 = bottomIntersectionX;
line.Y2 = container.Bottom;
}
else if (line.Y2 < line.Y1 && line.Y1 > container.Bottom)
{
intersectsWithRect = true;
var lengthToAdd = RadMath.GetPointDistance(bottomIntersectionX, line.X1, container.Bottom, line.Y1) % dashPatternLength;
line.X1 = bottomIntersectionX - lengthToAdd * System.Math.Cos(angle);
line.Y1 = container.Bottom + lengthToAdd * System.Math.Sin(angle);
}
}
return(intersectsWithRect);
}
private static bool TryClipToContainerLeft(ref RadLine line, RadRect container, double leftIntersectionY, double dashPatternLength, double angle)
{
bool intersectsWithRect = false;
if (container.Y <= leftIntersectionY && leftIntersectionY <= container.Bottom)
{
if (line.X1 < line.X2 && line.X1 < container.X)
{
intersectsWithRect = true;
var lengthToAdd = RadMath.GetPointDistance(container.X, line.X1, leftIntersectionY, line.Y1) % dashPatternLength;
line.Y1 = leftIntersectionY + lengthToAdd * Math.Sin(angle);
line.X1 = container.X - lengthToAdd * Math.Cos(angle);
}
else if (line.X2 < line.X1 && line.X2 < container.X)
{
intersectsWithRect = true;
line.Y2 = leftIntersectionY;
line.X2 = container.X;
}
}
return(intersectsWithRect);
}
private static bool TryClipToContainerRight(ref RadLine line, RadRect container, double rightIntersectionY, double dashPatternLength, double angle)
{
bool intersectsWithRect = false;
if (container.Y <= rightIntersectionY && rightIntersectionY <= container.Bottom)
{
if (line.X1 < line.X2 && line.X2 > container.Right)
{
intersectsWithRect = true;
line.Y2 = rightIntersectionY;
line.X2 = container.Right;
}
else if (line.X2 < line.X1 && line.X1 > container.Right)
{
intersectsWithRect = true;
var lengthToAdd = RadMath.GetPointDistance(container.Right, line.X1, rightIntersectionY, line.Y1) % dashPatternLength;
line.Y1 = rightIntersectionY - lengthToAdd * Math.Sin(angle);
line.X1 = container.Right + lengthToAdd * Math.Cos(angle);
}
}
return(intersectsWithRect);
}