private void MapControl_MouseDown(object sender, MouseEventArgs e)
{
switch (mMapOpstyle)
{
case 0:
break;
case 1: //放大
if (e.Button == MouseButtons.Left)
{
PointD sMouseLocPoi = new PointD(e.Location.X, e.Location.Y);
PointD sPoint = ToMapPoint(sMouseLocPoi);
ZoomByCenter(sPoint, mcZoomRatio);
Refresh();
}
break;
case 2: //缩小
if (e.Button == MouseButtons.Left)
{
PointD sMouseLocPoi = new PointD(e.Location.X, e.Location.Y);
PointD sPoint = ToMapPoint(sMouseLocPoi);
ZoomByCenter(sPoint, 1 / mcZoomRatio);
Refresh();
}
break;
case 3: //漫游
if (e.Button == MouseButtons.Left)
{
mMouseLocation.X = e.Location.X;
mMouseLocation.Y = e.Location.Y;
}
Refresh();
break;
case 4: //输入多边形
if (e.Button == MouseButtons.Left && e.Clicks == 1)
{
PointD sScreenPoint = new PointD(e.Location.X, e.Location.Y);
PointD sMapPoint = ToMapPoint(sScreenPoint);
mTrackingPolygon.AddPoint(sMapPoint);
Refresh(); //刷新
}
break;
case 5: //选择
if (e.Button == MouseButtons.Left && e.Clicks == 1)
{
mStartPoint = e.Location;
}
break;
}
}
/// <summary>
/// 复制
/// </summary>
public Polygon Clone()
{
Polygon sPolygon = new Polygon(); //新建多边形对象
int sPolygonCount = _Points.Count; //顶点数目
for (int i = 0; i < sPolygonCount; i++) //复制所有顶点
{
PointD sPoint = new PointD(_Points[i].X, _Points[i].Y);
sPolygon.AddPoint(sPoint);
}
return(sPolygon); //返回新建的多边形
}