/// <summary>
/// 设置地图的显示范围
/// </summary>
/// <param name="bounds">需要显示的范围</param>
private void viewBounds(soRect bounds)
{
double width = bounds.Width();
double heigth = bounds.Width();
bounds.Left -= width / 2;
bounds.Right += width / 2;
bounds.Bottom -= heigth / 2;
bounds.Top += heigth / 2;
this.axSuperMap1.ViewBounds = bounds;
this.axSuperMap1.Refresh();
}
/// <summary>
/// 设置地图的显示范围
/// </summary>
/// <param name="objRd">需要显示的记录集</param>
private void viewRecordset(soRecordset objRd)
{
double left = Double.MaxValue;
double right = Double.MinValue;
double bottom = Double.MaxValue;
double top = Double.MinValue;
objRd.MoveFirst();
while (!objRd.IsEOF())
{
soRect bounds = objRd.GetGeometry().Bounds;
if (left>bounds.Left)
{
left = bounds.Left;
}
if (right < bounds.Right)
{
right = bounds.Right;
}
if (bottom > bounds.Bottom)
{
bottom = bounds.Bottom;
}
if (top < bounds.Top)
{
top = bounds.Top;
}
objRd.MoveNext();
}
soRect rect = new soRect();
rect.Left = left;
rect.Right = right;
rect.Bottom = bottom;
rect.Top = top;
viewBounds(rect);
}
/// <summary>
/// 查询poi
/// </summary>
private void searchpoi()
{
String key = this.textBoxItemSearchKey.TextBox.Text.Trim();
if (key.Length == 0 || key == tipPOIKey)
{
MessageBox.Show("请输入搜索关键字！", msgCaption);
return;
}
this.listBoxPoiResult.Items.Clear();
this.axSuperMap1.TrackingLayer.ClearEvents();
if (!poiSearch.IsOpen)
{
MessageBox.Show("找不到POI索引！", msgCaption);
return;
}
// poi查询
PoiResult poiResult = poiSearch.search(key);
if (poiResult == null || poiResult.Count == 0)
{
MessageBox.Show("找不到数据！", msgCaption);
return;
}
soStyle style = new soStyle();
style.PenColor = Util.ColorToUInt32(Color.Blue);
style.SymbolSize = 30;
soRect rect = new soRect();
//获取查询结果
for (int i = 0; i < Math.Min(poiResult.Count,200); i++)
{
PoiInfo poiInfo = poiResult.getPoiInfoAt(i);
//坐标转换（wgs84 -> 地图坐标）
coordSysTranslator.convert(ref poiInfo);
// 加了结果列表
this.listBoxPoiResult.Items.Add(poiInfo);
// 加入跟踪层高亮显示
soGeoPoint geoPoint = new soGeoPoint();
geoPoint.x = poiInfo.x;
geoPoint.y = poiInfo.y;
this.axSuperMap1.TrackingLayer.AddEvent((soGeometry)geoPoint, style, poiInfo.name);
//计算范围
if (i==0)
{
//第一个
rect.Left = poiInfo.x;
rect.Right = poiInfo.x;
rect.Bottom = poiInfo.y;
rect.Top = poiInfo.y;
}
else
{
//向外扩张
if (rect.Left > poiInfo.x)
{
rect.Left = poiInfo.x;
}
if (rect.Right < poiInfo.x)
{
rect.Right = poiInfo.x;
}
if (rect.Bottom > poiInfo.y)
{
rect.Bottom = poiInfo.y;
}
if (rect.Top < poiInfo.y)
{
rect.Top = poiInfo.y;
}
}
}
//viewAllPoi(this.listBoxPoiResult.Items);
showRigthPanel(true, 1);
if (poiResult.Count == 1)
{
axSuperMap1.CenterX = rect.CenterPoint().x;
axSuperMap1.CenterY = rect.CenterPoint().y;
}
else
{
viewBounds(rect);
}
axSuperMap1.Refresh();
}
