/// <summary>
/// 响应鼠标按下事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public override void OnMouseDown(object sender, MouseButtonEventArgs e)
{
if (CurrentMode == ADDMODE)
{
Point cp = e.GetPosition(context); //获取相关坐标
cp.X = cp.X + 7 - App.StrokeThinkness / 2;
cp.Y = cp.Y + 7 - App.StrokeThinkness / 2; //设置为中心
RainCover c = new RainCover("雨水检查井", GetMercator(cp), "双击查看详细信息");
//添加其他相关信息
c.Location = GetMercator(cp);
JuncAddCommand cmd = new JuncAddCommand(this, c);
cmd.Excute();
CmdManager.getInstance().PushCmd(cmd);
}
else if (CurrentMode == DELMODE)
{
Path path = e.Source as Path;
if (path == null)
{
base.OnMouseDown(sender, e); //若都不是添加或删除命令，则交给父类进行处理
return;
}
JuncDelCommand cmd = new JuncDelCommand(this, path);
cmd.Excute();
CmdManager.getInstance().PushCmd(cmd);
}
base.OnMouseDown(sender, e); //若都不是添加或删除命令，则交给父类进行处理
}
public void DelJunc(RainCover c)
{
int index = 0;
foreach (RainCover tmpc in listRains)
{
if (c.Name.Equals(tmpc.Name))
{
break;
}
index++;
}
if (index < listRains.Count)
{
listRains.RemoveAt(index);
mListScreenpoint.RemoveAt(index);
}
}
/// <summary>
///在现有的检查井中寻找最接近的点
/// </summary>
/// <param name="p"></param>
/// <returns></returns>
public RainCover FindClosedCover(Point p)
{
RainCover cover = null;
double dis = App.StrokeThinkness;
for (int i = 0; i < listRains.Count; i++)
{
if (Math.Abs(mListScreenpoint.ElementAt(i).X - p.X) > dis || Math.Abs(mListScreenpoint.ElementAt(i).Y - p.Y) > dis)
{
continue;
}
double d = Math.Sqrt((mListScreenpoint.ElementAt(i).X - p.X) * (mListScreenpoint.ElementAt(i).X - p.X) +
(mListScreenpoint.ElementAt(i).Y - p.Y) * (mListScreenpoint.ElementAt(i).Y - p.Y)); //计算距离
if (dis > d)
{
dis = d;
cover = listRains[i];
}
}
return(cover);
}
public void AddJunc(RainCover c) //添加雨水检查井
{
listRains.Add(c);
//计算点的坐标
mListScreenpoint.Add(state.Mercator2Screen(c.Location));
}
