/// <summary>
/// 自动计算指定端点的相对位置。
/// </summary>
private void AutoResetRelativePos()
{
if (_autoPositionPoints == AutoPositionPoints.None)
{
return;
}
var from = Source.GetRect();
var to = Sink.GetRect();
if ((_autoPositionPoints & AutoPositionPoints.Source) != 0)
{
var toCenter = to.GetCenterPoint();
if (!from.Contains(toCenter))
{
var point = RectAlgorithm.CalcCrossPoint(from, toCenter);
this._sourceRelativePos = RectAlgorithm.GetRectRelative(from, point);
}
}
if ((_autoPositionPoints & AutoPositionPoints.Sink) != 0)
{
var fromCenter = from.GetCenterPoint();
if (!to.Contains(fromCenter))
{
var point = RectAlgorithm.CalcCrossPoint(to, fromCenter);
this._sinkRelativePos = RectAlgorithm.GetRectRelative(to, point);
}
}
}
/// <summary>
/// 为某个指定的目标位置导航
/// </summary>
/// <param name="source">起始连接器</param>
/// <param name="sinkPoint">目标位置</param>
/// <param name="preferredOrientation">目标连接器的方向</param>
/// <returns></returns>
internal List <Point> Route(ConnectorInfo source, ConnectorInfo sink)
{
var linePoints = new List <Point>();
var start = RectAlgorithm.CalcCrossPoint(source.DesignerItemRect, sink.Position);
var end = RectAlgorithm.CalcCrossPoint(sink.DesignerItemRect, source.Position);
linePoints.Insert(0, start);
linePoints.Add(end);
return(linePoints);
}
