// 20111014
public Extent2D GetExtent()
{
Extent2D result = Extent2D.Null;
points.ForEach(p => result.AddPoint(p));
return(result);
}
public static double CoincidenceEvaluation(Extent2D ext1, Extent2D ext2) // newly 20130402
{
double dist = ext1.Center.DistTo(ext2.Center);
double minArea = Math.Min(ext1.Area, ext2.Area);
return(dist * dist / minArea);
}
public bool IsCrossedBy(Extent2D extents)
{
//Point2D p1 = new Point2D(min.x, max.y);
//Point2D p2 = new Point2D(max.x, min.y);
//return extents.IsPointIn(p1) || extents.IsPointIn(p2) || extents.IsPointIn(min) || extents.IsPointIn(max) || IsExtentsIn(extents) || extents.IsExtentsIn(this);
Extent2D sum = this + extents;
return((sum.XRange <= this.XRange + extents.XRange) && (sum.YRange <= this.YRange + extents.YRange));
}
// 20111014
public void Add(Extent2D ext)
{
if (this.IsNull)
{
min = ext.min;
max = ext.max;
IsNull = ext.IsNull;
}
else
{
if (ext.IsNull)
{
return;
}
min = new Point2D(Math.Min(min.X, ext.min.X), Math.Min(min.Y, ext.min.Y));
max = new Point2D(Math.Max(max.X, ext.max.X), Math.Max(max.Y, ext.max.Y));
}
}
public bool IsCoveredBy(Extent2D extents) // newly 20130328
{
return(extents.min.X >= min.X && extents.min.Y >= min.Y && extents.max.X <= max.X && extents.max.Y <= max.Y);
}
public bool IsExtentsIn(Extent2D extents)
{
return(extents.min.X >= min.X && extents.min.Y >= min.Y && extents.max.X <= max.X && extents.max.Y <= max.Y);
}
