public static List <Point> Sort(List <Point> Points)
{
Point CenterPoint = new Point {
x = Points.Sum(m => m.x) / Points.Count, y = Points.Sum(m => m.y) / Points.Count
};
List <SortPoint> SortedPoint = new List <SortPoint>();
SortedPoint = (from p in Points
select new SortPoint
{
Angle = Math.Atan2((p.y - CenterPoint.y), (p.x - CenterPoint.x)),
Point = p
}).OrderBy(m => m.Angle).ToList();
for (int i = 0; i < SortedPoint.Count; i++)
{
if (i != SortedPoint.Count - 1)
{
if (SortedPoint[i].Point.y > SortedPoint[i + 1].Point.y)
{
SortPoint temp = new SortPoint();
temp = SortedPoint[i];
SortedPoint[i] = SortedPoint[i + 1];
SortedPoint[i + 1] = temp;
}
}
else
{
break;
}
}
return(SortedPoint.Select(m => m.Point).ToList());
}
public static Polygon SortPoints(List <Point> Points)
{
Point CenterPoint = new Point {
x = Points.Sum(m => m.x) / Points.Count, y = Points.Sum(m => m.y) / Points.Count
};
List <SortPoint> SortedPoint = new List <SortPoint>();
SortedPoint = (from p in Points
select new SortPoint
{
Angle = Math.Atan2((p.y - CenterPoint.y), (p.x - CenterPoint.x)),
Point = p
}).OrderBy(m => m.Angle).ToList();
for (int i = 0; i < SortedPoint.Count; i++)
{
if (i != SortedPoint.Count - 1)
{
if (SortedPoint[i].Angle == SortedPoint[i + 1].Angle)
{
if (SortedPoint[i].Point.y > SortedPoint[i + 1].Point.y)
{
SortPoint temp = new SortPoint();
temp = SortedPoint[i];
SortedPoint[i] = SortedPoint[i + 1];
SortedPoint[i + 1] = temp;
}
}
}
else
{
break;
}
}
Polygon polygon = new Polygon();
foreach (var item in SortedPoint)
{
Console.WriteLine("({0},{1})\t", item.Point.x, item.Point.y);
polygon.Vertex.AddLast(item.Point);
}
return(polygon);
}
