/// <summary>
/// Returns the square of the perpendicular distance of pt1 from the straight line connecting pt2 and pt3
/// </summary>
/// <param name="pt1"></param>
/// <param name="pt2"></param>
/// <param name="pt3"></param>
/// <returns></returns>
private double TDistance2(FencePoint pt1, FencePoint pt2, FencePoint pt3)
{
var d1x = pt3.X - pt2.X;
var d1y = pt3.Y - pt2.Y;
var d2x = pt1.X - pt3.X;
var d2y = pt1.Y - pt3.Y;
var d3x = pt2.X - pt1.X;
var d3y = pt2.Y - pt1.Y;
var s1 = d1x * d1x + d1y * d1y;
var s2 = d2x * d2x + d2y * d2y;
var s3 = d3x * d3x + d3y * d3y;
if (s1 + s2 <= s3)
{
return(s2);
}
if (s1 + s3 == s2)
{
return(s3);
}
var d = d1y * d2x - d1x * d2y;
return(d * d / s1);
}
public void Read(BinaryReader reader)
{
var pointsCount = reader.ReadInt32();
for (var i = 0; i < pointsCount; i++)
{
var point = new FencePoint();
point.Read(reader);
Points.Add(point);
}
}
/// <summary> /// Determines if the 2D location of this point is the same as the point supplied in other /// </summary> public bool SameInPlan(FencePoint other) => X == other.X && Y == other.Y;
/// <summary> /// Determines if this 3D point is the same as the point supplied in other /// </summary> public bool Equals(FencePoint other) => X == other.X && Y == other.Y && Z == other.Z;
/// <summary>
/// Assign the state of source to this fence point instance
/// </summary>
public void Assign(FencePoint source)
{
X = source.X;
Y = source.Y;
Z = source.Z;
}
/// <summary>
/// Constuctor taking another FencePoint as an argument. The result is a new clone of the FencePoint
/// </summary>
public FencePoint(FencePoint pt) : base()
{
Assign(pt);
}