// 断开当前的线，并握住这根线的这一头
public void ChangeLink(LinkNodeData node)
{
OperatorLink input_node, output_node;
int input_idx;
GameObject input_anchor, output_anchor;
GetLinkData(node, out input_node, out input_idx, out output_node);
output_node.RemoveOutputLink(input_node, input_idx);
input_node.RemoveInputLink(input_idx);
LinkLine line = RemoveLinkLine(input_node, input_idx, output_node);
m_curLine = line;
if (node.isInput)
{
output_anchor = output_node.FindOutputAnchor();
line.SetNode(output_anchor, null);
m_matchingObj = new LinkNodeData(output_node, output_anchor, false, -1, -1);
}
else
{
input_anchor = input_node.FindInputAnchor(input_idx);
line.SetNode(null, input_anchor);
m_matchingObj = new LinkNodeData(input_node, input_anchor, true, input_idx, -1);
}
OnLinkChange();
}
// 创建一条线
public void StartMatch(LinkNodeData src)
{
m_matchingObj = src;
m_curLine = CreateLine();
if (src.isInput)
{
m_curLine.SetNode(null, src.anchorObj);
}
else
{
m_curLine.SetNode(src.anchorObj, null);
}
}
// 决定当前的线
public void SettleMatch(LinkNodeData dst)
{
if (!CanMatch(dst))
{
return;
}
OperatorLink input_node = (dst.isInput ? dst : m_matchingObj).obj;
OperatorLink output_node = (!dst.isInput ? dst : m_matchingObj).obj;
GameObject input_anchor = (dst.isInput ? dst : m_matchingObj).anchorObj;
GameObject output_anchor = (!dst.isInput ? dst : m_matchingObj).anchorObj;
int input_idx = dst.isInput ? dst.inputIdx : m_matchingObj.inputIdx;
input_node.AddInputLink(output_node, input_idx);
output_node.AddOutputLink(input_node, input_idx);
m_links.Add(new LinkData(m_curLine, input_node, input_idx, output_node));
m_curLine.SetNode(output_anchor, input_anchor);
m_matchingObj = null;
m_curLine = null;
OnLinkChange();
}