protected override bool IndexOfAfterCheck(IGeometry linearGeom, Coordinate testPt)
{
LocationIndexedLine indexedLine = new LocationIndexedLine(linearGeom);
// check locations are consecutive
LinearLocation loc1 = indexedLine.IndexOf(testPt);
LinearLocation loc2 = indexedLine.IndexOfAfter(testPt, loc1);
if (loc2.CompareTo(loc1) <= 0)
{
return(false);
}
// check extracted points are the same as the input
Coordinate pt1 = indexedLine.ExtractPoint(loc1);
Coordinate pt2 = indexedLine.ExtractPoint(loc2);
if (!pt1.Equals2D(testPt))
{
return(false);
}
if (!pt2.Equals2D(testPt))
{
return(false);
}
return(true);
}
/// <summary>
/// Extracts a subline of the input.
/// If <paramref name="end" /> is minor that <paramref name="start" />,
/// the linear geometry computed will be reversed.
/// </summary>
/// <param name="start">The start location.</param>
/// <param name="end">The end location.</param>
/// <returns>A linear geometry.</returns>
public IGeometry Extract(LinearLocation start, LinearLocation end)
{
if (end.CompareTo(start) < 0)
return Reverse(ComputeLinear(end, start));
return ComputeLinear(start, end);
}