/// <summary>
/// Returns an array with 3 ranges indicating the first and last point for the given lines in each region.
/// </summary>
/// <param name="first">The index of the first line.</param>
/// <param name="last">The index of the last line.</param>
/// <param name="allowEstimatesForOutOfViewLines">if set to <c>true</c> allow estimates for out of view lines.</param>
/// <returns></returns>
public override DoubleSpan[] RangeToRegionPoints(int first, int last, bool allowEstimatesForOutOfViewLines)
{
var result = new DoubleSpan[3];
for (int n = 0; n < 3; n++)
{
result[n] = RangeToPoints((ScrollAxisRegion)n, first, last, allowEstimatesForOutOfViewLines);
}
return(result);
//new DoubleSpan[3] { DoubleSpan.Empty, DoubleSpan.Empty, DoubleSpan.Empty };
}
/// <summary>
/// Returns an array with 3 ranges indicating the first and last point for the given lines in each region.
/// </summary>
/// <param name="first">The index of the first line.</param>
/// <param name="last">The index of the last line.</param>
/// <param name="allowEstimatesForOutOfViewLines">if set to <c>true</c> allow estimates for out of view lines.</param>
/// <returns></returns>
public override DoubleSpan[] RangeToRegionPoints(int first, int last, bool allowEstimatesForOutOfViewLines)
{
double p1, p2;
p1 = Distances.GetCumulatedDistanceAt(first);
p2 = last >= Distances.Count - 1 ? Distances.TotalDistance : Distances.GetCumulatedDistanceAt(last + 1);
var result = new DoubleSpan[3];
for (int n = 0; n < 3; n++)
{
result[n] = RangeToPointsHelper((ScrollAxisRegion)n, p1, p2);
}
return(result);
}