public void GetPoIbyExtent(Extent extent, string keyWords)
{
Coord topLeft = new Coord(extent.minX, extent.minY);
topLeft = CoordHelper.WebMercator2lonLat(topLeft);
Coord bottomRight = new Coord(extent.maxX, extent.maxY);
bottomRight = CoordHelper.WebMercator2lonLat(bottomRight);
double minx = topLeft.lon;
double miny = topLeft.lat;
double maxx = bottomRight.lon;
double maxy = bottomRight.lat;
int xCount = (int)Math.Ceiling((maxx - minx) / 0.01);
int yCount = (int)Math.Ceiling((maxy - miny) / 0.01);
int index = 0;
keyWords = keyWords != "" ? keyWords : "汽车|摩托|餐饮|购物|生活|体育|医疗|住宿|风景|住宅|政府|科教|交通|金融|公司|行政地名|自然地名";
for (int i = 0; i < xCount; i++)
{
for (int j = 0; j < yCount; j++)
{
index++;
double x1 = minx + i * 0.01;
double x2 = minx + (i + 1) * 0.01;
double y1 = miny + j * 0.01;
double y2 = miny + (j + 1) * 0.01;
if (i + 1 == xCount)
{
x2 = maxx;
}
if (j + 1 == yCount)
{
y2 = maxy;
}
this.DownPoIbyExtent(x1, y1, x2, y2, keyWords, index, xCount * yCount);
}
}
if (this.DownEndEvent != null)
{
this.DownEndEvent("下载完成");
}
}
/// <summary>
/// 坐标转换
/// </summary>
/// <param name="lonlat">格式[x,y]或者[x|y]</param>
/// <param name="project"></param>
/// <returns></returns>
public static Coord ProjectChange(string lonlat, ProjectConvert project)
{
if (string.IsNullOrEmpty(lonlat))
{
return(new Coord(0, 0));
}
try
{
double x = double.Parse(lonlat.Split('|', ',')[0]);
double y = double.Parse(lonlat.Split('|', ',')[1]);
switch (project)
{
case ProjectConvert.NONE:
return(new Coord(x, y));
case ProjectConvert.GCJ_WGS:
case ProjectConvert.GAODE84_WGS:
return(CoordHelper.Gcj2Wgs(x, y));
case ProjectConvert.BAIDU_WGS:
var c = CoordHelper.BdDecrypt(y, x);
return(CoordHelper.Gcj2Wgs(c.lon, c.lat));
case ProjectConvert.GAODE900913_WGS:
var g = CoordHelper.WebMercator2lonLat(new Coord(x, y));
return(CoordHelper.Gcj2Wgs(g.lon, g.lat));
default:
return(new Coord(0, 0));
}
}
catch (Exception)
{
Console.WriteLine(lonlat);
return(new Coord());
}
}
