} // private static bool ContainsPoint(Coordinate p, Geometry geom)
private static bool ContainsPointInPolygon(Coordinate p, Polygon poly)
{
if (poly.IsEmpty())
{
return(false);
}
LinearRing shell = (LinearRing)poly.GetExteriorRing();
if (!_cga.IsPointInRing(p, shell.GetCoordinates()))
{
return(false);
}
// now test if the point lies in or on the holes
for (int i = 0; i < poly.GetNumInteriorRing(); i++)
{
LinearRing lr = poly.GetInteriorRingN(i);
if (_cga.IsPointInRing(p, lr.GetCoordinates()))
{
return(false);
}
}
return(true);
} // private static bool ContainsPointInPolygon(Coordinate p, Polygon poly)
} // private int Locate( Coordinate p, LineString l )
/// <summary>
///
/// </summary>
/// <param name="p"></param>
/// <param name="ring"></param>
/// <returns></returns>
private int Locate(Coordinate p, LinearRing ring)
{
if (_cga.IsOnLine(p, ring.GetCoordinates()))
{
return(Location.Boundary);
}
if (_cga.IsPointInRing(p, ring.GetCoordinates()))
{
return(Location.Interior);
}
return(Location.Exterior);
} // private int Locate( Coordinate p, LinearRing ring )
public bool IsInside(Coordinate pt)
{
return(_cga.IsPointInRing(pt, _pts));
}