#include "StdAfx.h"
#include "MouseToolAddNode.h"
#include "GlobalDrawMgr.h"
#include "Layer.h"
#include "GlobalFunction.h"
#include "CommandAddNode.h"
#include "CommandMgr.h"

CMouseToolAddNode::CMouseToolAddNode(void)
{
}
CMouseToolAddNode::~CMouseToolAddNode(void)
{
}
void CMouseToolAddNode::OnLButtonDown(UINT nFlags, CPoint point,CClientDC &dc)
{
     Dbxy pt = gDraw->CPoint2Dbxy(point);
     DbRect rect = gDraw->GetCurPointRect(pt);
     
     CLayer &layer = gLayer;
     if(!layer.HasObjectInRect(rect))
         return;
     //先找到第一个在rect 的obj -----------------------------------------------
     Sptr<CObjBase> pObj = layer.GetFirstObjInRect(rect);
     //获得obj 在rect 中的第一条线段-----------------------------------------------
     vector<DbLine> LineVec;
     pObj->GetLineInRect(rect,LineVec,false);
     Dbxy LinePt1 = LineVec[0].m_pt1.GetPt();
     Dbxy LinePt2 = LineVec[0].m_pt2.GetPt();

     if(IsPointInRect(LinePt1,rect)||IsPointInRect(LinePt2,rect))//不要在端点附近添加
     {
         return;
     }
     //得到鼠标rect 线段的交点--------------------------------------------------
     Dbxy MousePt = IntersectionOfRectAndLine(LinePt1,LinePt2,rect);

     //获得LinePt1 在obj 的序号
     int idx = pObj->GetNodePtIdx(LinePt1);
     if(idx!=-1)
     {
          //插入到LinePt1 点的后面-------------------------
          pObj->InsertNode(idx+1,MousePt);
          pObj->SetSelected(true);

          //创建撤销指令-----------------------------------
          CCommandAddNode *p = new CCommandAddNode;
          p->SetPar(idx+1,MousePt);
          p->AddOpObj(pObj);
          gCommandMgr.AddUndoCommand(p);
          //刷新
          GetCurViewPtr()->RefreshView();
     }
}