| public static DistancePointLine ( System.Point p, System.Point a, System.Point b ) : double | ||
| p | System.Point | The point to compute the distance for. |
| a | System.Point | One point of the line. |
| b | System.Point | Another point of the line (must be different to A). |
| return | double | |
public static double DistanceToLine(Point point, List <Point> points)
{
var minDist = Double.MaxValue;
for (var i = 0; i < points.Count - 1; i++)
{
var dist = CGAlgorithms.DistancePointLine(point, points[i], points[i + 1]);
if (dist < minDist)
{
minDist = dist;
}
}
return(minDist);
}
/// <summary>
/// Returns the shortest distance to a line and also the index of the segment
/// with that shortest distance. Segments count from zero to vertex count - 1.
/// </summary>
/// <param name="point"></param>
/// <param name="points"></param>
/// <returns></returns>
public static (double Distance, int Segment) GetDistanceAndSegmentIndex(Point point, IList <Point> points)
{
var minDist = Double.MaxValue;
int segment = 0;
for (var i = 0; i < points.Count - 1; i++)
{
var dist = CGAlgorithms.DistancePointLine(point, points[i], points[i + 1]);
if (dist < minDist)
{
minDist = dist;
segment = i;
}
}
return(minDist, segment);
}