/// <summary>
///
/// </summary>
/// <param name="seg"></param>
/// <param name="inputPt"></param>
/// <returns></returns>
public static double SegmentFraction(LineSegment seg, ICoordinate inputPt)
{
double segFrac = seg.ProjectionFactor(inputPt);
if (segFrac < 0.0)
segFrac = 0.0;
else if (segFrac > 1.0)
segFrac = 1.0;
return segFrac;
}
/// <summary>
///
/// </summary>
/// <param name="seg"></param>
/// <param name="inputPt"></param>
/// <param name="segmentStartMeasure"></param>
/// <returns></returns>
private double SegmentNearestMeasure(LineSegment seg, ICoordinate inputPt, double segmentStartMeasure)
{
// found new minimum, so compute location distance of point
double projFactor = seg.ProjectionFactor(inputPt);
if (projFactor <= 0.0)
return segmentStartMeasure;
if (projFactor <= 1.0)
return segmentStartMeasure + projFactor * seg.Length;
// ASSERT: projFactor > 1.0
return segmentStartMeasure + seg.Length;
}