/// <summary>
///
/// </summary>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="width"></param>
/// <param name="height"></param>
public EllipseElement(double x, double y, double width, double height) : base()
{
KeyPointAmount = 2;
this.ElementCursor = RectElement.ElementDefaultCursor;
this.leftTopPoint = new TractionPoint(this);
this.leftBottomPoint = new TractionPoint(this);
this.rightTopPoint = new TractionPoint(this);
this.rightBottomPoint = new TractionPoint(this);
keyPoint1 = new KeyPoint(0, 0, this);
keyPoint2 = new KeyPoint(0, 0, this);
keyPoint1.TractionPoint = leftTopPoint;
keyPoint2.TractionPoint = rightBottomPoint;
keyPointList.Add(keyPoint1);
keyPointList.Add(keyPoint2);
this.leftTopPoint.ElementCursor = Cursors.SizeNWSE;
this.leftBottomPoint.ElementCursor = Cursors.SizeNESW;
this.rightBottomPoint.ElementCursor = Cursors.SizeNWSE;
this.rightTopPoint.ElementCursor = Cursors.SizeNESW;
this.X = x;
Y = y;
Z = RECTANGLE_DEFAULT_Z;
this.Width = width;
this.Height = height;
this.leftTopPoint.OnTractionEventHandler += OnLeftTopPointTraction;
this.leftBottomPoint.OnTractionEventHandler += OnLeftBottomPointTraction;
this.rightTopPoint.OnTractionEventHandler += OnRightTopPointTraction;
this.rightBottomPoint.OnTractionEventHandler += OnRightBottomPointTraction;
Visible = true;
Parent = null;
}
public void OnRightBottomPointTraction(TractionPoint element, double x, double y)
{
leftBottomPoint.Y = y;
rightTopPoint.X = x;
if (this.Width < 0)
{
FlipHorizontal();
}
if (this.Height < 0)
{
FlipVertical();
}
OnElementChange(this);
}
public void OnLeftBottomPointTraction(TractionPoint element, double x, double y)
{
leftTopPoint.X = x;
rightBottomPoint.Y = y;
if (this.Height < 0)
{
FlipVertical();
}
if (this.Width < 0)
{
FlipHorizontal();
}
if (Width > Height)
{
this.X += (Width - Height);
}
else
{
this.Height = Width;
}
OnElementChange(this);
}
public void FlipHorizontal()
{
this.leftTopPoint.OnTractionEventHandler -= OnLeftTopPointTraction;
this.leftBottomPoint.OnTractionEventHandler -= OnLeftBottomPointTraction;
this.rightTopPoint.OnTractionEventHandler -= OnRightTopPointTraction;
this.rightBottomPoint.OnTractionEventHandler -= OnRightBottomPointTraction;
System.Console.WriteLine("hFlip");
TractionPoint tmp = leftTopPoint;
leftTopPoint = rightTopPoint;
rightTopPoint = tmp;
tmp = leftBottomPoint;
leftBottomPoint = rightBottomPoint;
rightBottomPoint = tmp;
this.leftTopPoint.OnTractionEventHandler += OnLeftTopPointTraction;
this.leftBottomPoint.OnTractionEventHandler += OnLeftBottomPointTraction;
this.rightTopPoint.OnTractionEventHandler += OnRightTopPointTraction;
this.rightBottomPoint.OnTractionEventHandler += OnRightBottomPointTraction;
this.leftTopPoint.ElementCursor = Cursors.SizeNWSE;
this.leftBottomPoint.ElementCursor = Cursors.SizeNESW;
this.rightBottomPoint.ElementCursor = Cursors.SizeNWSE;
this.rightTopPoint.ElementCursor = Cursors.SizeNESW;
}
public void FlipVertical()
{
this.leftTopPoint.OnTractionEventHandler -= OnLeftTopPointTraction;
this.leftBottomPoint.OnTractionEventHandler -= OnLeftBottomPointTraction;
this.rightTopPoint.OnTractionEventHandler -= OnRightTopPointTraction;
this.rightBottomPoint.OnTractionEventHandler -= OnRightBottomPointTraction;
System.Console.WriteLine("vFlip");
TractionPoint tmp = leftTopPoint;
leftTopPoint = leftBottomPoint;
leftBottomPoint = tmp;
tmp = rightTopPoint;
rightTopPoint = rightBottomPoint;
rightBottomPoint = tmp;
this.leftTopPoint.OnTractionEventHandler += OnLeftTopPointTraction;
this.leftBottomPoint.OnTractionEventHandler += OnLeftBottomPointTraction;
this.rightTopPoint.OnTractionEventHandler += OnRightTopPointTraction;
this.rightBottomPoint.OnTractionEventHandler += OnRightBottomPointTraction;
this.leftTopPoint.ElementCursor = Cursors.SizeNWSE;
this.leftBottomPoint.ElementCursor = Cursors.SizeNESW;
this.rightBottomPoint.ElementCursor = Cursors.SizeNWSE;
this.rightTopPoint.ElementCursor = Cursors.SizeNESW;
System.Console.WriteLine("lt==lb:" + object.ReferenceEquals(leftTopPoint, leftBottomPoint));
}
