/// <summary>
/// 删除直线中的一个结点,可能会导致直线合并
/// </summary>
/// <param name="point"></param>
/// <param name="p"></param>
internal void DeletePoint(Point point, bool p)
{
List <PartitionLine> allLines = new List <PartitionLine>(HPartionLines);
allLines.AddRange(VPartionLines);
FindLineByPoint findByPoint = new FindLineByPoint(point);
PartitionLine resultLine = allLines.Find(findByPoint.PredicatePointIn);
if (resultLine != null)
{
resultLine.MergeByPoint(point);
}
}
/// <summary>
/// 根据位置来分割线段
/// </summary>
/// <param name="position"></param>
public void PartitionByPos(int position)
{
Point point;
if (IsRow)
{
point = new Point(position, Position);
}
else
{
point = new Point(Position, position);
}
///如果没有孩子线段
if (this.ChildLines == null)
{
ChildLines = new SDLinkedList <PartitionLine>();
PartitionLine preLine = new PartitionLine(this.Start, position, this.Position, this.IsRow);
PartitionLine aftLine = new PartitionLine(position, this.End, this.Position, this.IsRow);
preLine.FatherLine = this;
aftLine.FatherLine = this;
ChildLines.AddFirst(preLine);
ChildLines.AddLast(aftLine);
}
else
{
///找到被切割的线段
FindLineByPoint findByPoint = new FindLineByPoint(point);
LinkedListNode <PartitionLine> resultNode = ChildLines.Find(findByPoint.PredicatePointIn);
///在被切割的线段前后添加一线段,同时删除原线段
if (resultNode != null)
{
PartitionLine preLine = new PartitionLine(resultNode.Value.Start, position, resultNode.Value.Position, this.IsRow);
PartitionLine aftLine = new PartitionLine(position, resultNode.Value.End, resultNode.Value.Position, this.IsRow);
preLine.FatherLine = this;
aftLine.FatherLine = this;
ChildLines.AddBefore(resultNode, preLine);
ChildLines.AddAfter(resultNode, aftLine);
ChildLines.Remove(resultNode);
}
}
}
