/// <summary>
/// Inverse transform the specified screen point.
/// </summary>
/// <param name="x">The x coordinate.</param>
/// <param name="y">The y coordinate.</param>
/// <param name="yaxis">The y-axis.</param>
/// <returns>The data point.</returns>
public virtual DataPoint InverseTransform(double x, double y, Axis yaxis)
{
return new DataPoint(this.InverseTransform(x), yaxis != null ? yaxis.InverseTransform(y) : 0);
}
/// <summary>
/// Zooms at the specified position.
/// </summary>
/// <param name="axis">
/// The axis.
/// </param>
/// <param name="factor">
/// The zoom factor.
/// </param>
/// <param name="x">
/// The position to zoom at.
/// </param>
public void ZoomAt(Axis axis, double factor, double x = double.NaN)
{
if (double.IsNaN(x))
{
double sx = (axis.Transform(axis.ActualMaximum) + axis.Transform(axis.ActualMinimum)) * 0.5;
x = axis.InverseTransform(sx);
}
axis.ZoomAt(factor, x);
}
/// <summary>
/// Transforms the specified point from screen space to data space.
/// </summary>
/// <param name="p">The point.</param>
/// <param name="xaxis">The x axis.</param>
/// <param name="yaxis">The y axis.</param>
/// <returns>The data point.</returns>
public static DataPoint InverseTransform(ScreenPoint p, Axis xaxis, Axis yaxis)
{
return xaxis.InverseTransform(p.x, p.y, yaxis);
}