/// <summary>
/// Removes a point from the polygon.
/// </summary>
/// <param name="p"></param>
public void RemovePoint(PolygonPoint p)
{
PolygonPoint next, prev;
next = p.Next;
prev = p.Previous;
prev.Next = next;
next.Previous = prev;
this._points.Remove(p);
}
/// <summary>
/// Inserts list (after last point in polygon?)
/// </summary>
/// <param name="list"></param>
public void AddPoints(IEnumerable<PolygonPoint> list)
{
PolygonPoint first;
foreach (PolygonPoint p in list)
{
p.Previous = this._last;
if (this._last != null)
{
p.Next = this._last.Next;
this._last.Next = p;
}
this._last = p;
this._points.Add(p);
}
first = (PolygonPoint)this._points[0];
this._last.Next = first;
first.Previous = this._last;
}
/// <summary>
/// Inserts newPoint after point.
/// </summary>
/// <param name="point">The point to insert after in the polygon</param>
/// <param name="newPoint">The point to insert into the polygon</param>
public void InsertPointAfter(PolygonPoint point, PolygonPoint newPoint)
{
// Validate that
int index = this._points.IndexOf(point);
if (index == -1)
{
throw new ArgumentException(
"Tried to insert a point into a Polygon after a point not belonging to the Polygon", "point");
}
newPoint.Next = point.Next;
newPoint.Previous = point;
point.Next.Previous = newPoint;
point.Next = newPoint;
this._points.Insert(index + 1, newPoint);
}
/// <summary>
/// Adds a point after the last in the polygon.
/// </summary>
/// <param name="p">The point to add</param>
public void AddPoint(PolygonPoint p)
{
p.Previous = this._last;
p.Next = this._last.Next;
this._last.Next = p;
this._points.Add(p);
}