/// <summary>
/// Calculates GPS square from the given centre location using a radius.
/// </summary>
/// <param name="Radius">Half of a distance between oposite sides.</param>
public GpsSquare(GpsLocation Centre, double Radius)
{
// We calculate positions of square mid points of top and bottom sides - i.e. points in the center of square sides.
MidTop = Centre.GoVector(GpsLocation.BearingNorth, Radius);
MidBottom = Centre.GoVector(GpsLocation.BearingSouth, Radius);
// From these mid points, we navigate use West and East bearing to go to the square corners.
LeftTop = MidTop.GoVector(GpsLocation.BearingWest, Radius);
RightTop = MidTop.GoVector(GpsLocation.BearingEast, Radius);
LeftBottom = MidBottom.GoVector(GpsLocation.BearingWest, Radius);
RightBottom = MidBottom.GoVector(GpsLocation.BearingEast, Radius);
}
/// <summary>
/// Calculates GPS square from the given centre location using a radius.
/// </summary>
/// <param name="Radius">Half of a distance between oposite sides.</param>
/// <returns></returns>
public GpsSquare GetSquare(double Radius)
{
// We calculate positions of square mid points of top and bottom sides - i.e. points in the center of square sides.
GpsLocation midTop = GoVector(BearingNorth, Radius);
GpsLocation midBottom = GoVector(BearingSouth, Radius);
// From these mid points, we navigate use West and East bearing to go to the square corners.
GpsLocation leftTop = midTop.GoVector(BearingWest, Radius);
GpsLocation rightTop = midTop.GoVector(BearingEast, Radius);
GpsLocation leftBottom = midBottom.GoVector(BearingWest, Radius);
GpsLocation rightBottom = midBottom.GoVector(BearingEast, Radius);
GpsSquare res = new GpsSquare(leftTop, rightTop, leftBottom, rightBottom);
return(res);
}
/// <summary>
/// Basic square constructor.
/// </summary>
/// <param name="LeftTop">Location of the left-top corner of the square.</param>
/// <param name="RightTop">Location of the right-top corner of the square.</param>
/// <param name="LeftBottom">Location of the left-bottom corner of the square.</param>
/// <param name="RightBottom">Location of the right-bottom corner of the square.</param>
public GpsSquare(GpsLocation LeftTop, GpsLocation RightTop, GpsLocation LeftBottom, GpsLocation RightBottom)
{
this.LeftTop = LeftTop;
this.RightTop = RightTop;
this.LeftBottom = LeftBottom;
this.RightBottom = RightBottom;
double bearing = LeftTop.InitialBearingTo(RightTop);
double distance = LeftTop.DistanceTo(RightTop) / 2;
MidTop = LeftTop.GoVector(bearing, distance);
bearing = LeftBottom.InitialBearingTo(RightBottom);
distance = LeftBottom.DistanceTo(RightBottom) / 2;
MidBottom = LeftBottom.GoVector(bearing, distance);
}
