/// <summary>
/// Closes the shape if needed.
/// </summary>
protected void closeShapeIfNeeded()
{
if (!IsClosedShape(_polyline))
{
_polyline.AddLastPoint(_polyline.FirstPoint());
}
}
/// <summary>
/// Determines whether [is any point on segment and not ends] [the specified polyline].
/// </summary>
/// <param name="polyline">The polyline.</param>
/// <returns><c>true</c> if [is any point on segment and not ends] [the specified polyline]; otherwise, <c>false</c>.</returns>
public static bool IsJoiningPointOnAnotherSegment(PolyLine polyline)
{
CartesianCoordinate firstPoint = polyline.FirstPoint();
CartesianCoordinate lastPoint = polyline.LastPoint();
for (int i = 1; i < polyline.CountSegments - 1; i++)
{ // Loop is skipping first and last segments
if (polyline[i] is LineSegment)
{
LineSegment segment = (LineSegment)polyline[i];
if ((segment.IncludesCoordinate(firstPoint) &&
!PointIntersection.IsOnPoint(firstPoint, segment.I) &&
!PointIntersection.IsOnPoint(firstPoint, segment.J)) ||
(segment.IncludesCoordinate(lastPoint) &&
!PointIntersection.IsOnPoint(lastPoint, segment.I) &&
!PointIntersection.IsOnPoint(lastPoint, segment.J)))
{
return(true);
}
}
}
return(false);
}
/// <summary>
/// Determines whether [is closed shape].
/// </summary>
/// <returns>System.Boolean.</returns>
public static bool IsClosedShape(PolyLine polyline)
{
return(polyline.FirstPoint() == polyline.LastPoint());
}
