public static bool TryParse(String str, out GeoCircle circle)
{
circle = null;
String[] parts = str.Split('R');
GeoPoint p;
Double r;
if (parts.Length == 2 && GeoPoint.TryParse(parts[0].Trim(), out p) && Double.TryParse(parts[1].Trim(), out r))
{
circle = new GeoCircle(p, r);
}
return(circle != null);
}
public bool Intersects(GeoCircle circle)
{
bool intersects = false;
foreach (GeoLine line in this)
{
GeoPoint p1, p2;
int intersections;
if (circle.Intersects(line, out p1, out p2, out intersections))
{
intersects = true;
break;
}
}
return(intersects);
}
public Double GetMiniumumPossibleDistance(GeoCircle postion)
{
Double distance = Double.MaxValue;
if (postion.Intersects(this))
{
distance = 0;
}
else
{
distance = DistanceToEdgeFrom(postion.Center as GeoPoint);
distance = Math.Max(0, distance - postion.Radius);
}
return(distance);
}
public static Double GetMiniumumPossibleDistanceFromAnyPolygon(GeoCircle postion, IEnumerable <GeoPolygon> polygons)
{
Double distance = Double.MaxValue;
foreach (GeoPolygon polygon in polygons)
{
if (postion.Intersects(polygon) || polygon.Contains(postion.Center as GeoPoint))
{
distance = 0;
}
else
{
Double thisDistance = polygon.DistanceToEdgeFrom(postion.Center as GeoPoint);
thisDistance = Math.Max(0, thisDistance - postion.Radius);
distance = Math.Min(distance, thisDistance);
}
if (distance == 0)
{
break;
}
}
return(distance);
}
public GeoCircle(GeoCircle other)
: this(other.Latitude, other.Longitude, other.Radius)
{
}
public bool Intersects(GeoCircle circle)
{
return(circle.Intersects(this));
}
public bool Contains(GeoCircle circle, Double rayLength = DEFAULT_RAY_LENGTH)
{
/** see if this polygon entirely contains the given circle */
return(this.Contains(circle.Center as GeoPoint) == true && circle.Intersects(this) == false);
}
public GeoEllipse(GeoCircle circle)
: this(circle.Center, circle.Radius, circle.Radius, 0)
{
}