/// <summary>
/// 获取Tile的范围四至
/// </summary>
/// <returns></returns>
public LngLatBbox GetBbox()
{
var cellSize = new CellSize();
var cell = cellSize.GetCellSizeInDegree(Level);
var L = new LngLatSegments(this.Corner.Lng.Code >> (32 - Level) << (32 - Level), true);
var B = new LngLatSegments(this.Corner.Lat.Code >> (32 - Level) << (32 - Level), false);
var bbox = new LngLatBbox();
if (L.G == 1)
{
bbox.East = L.Degree;
bbox.West = bbox.East - cell;
}
else
{
bbox.West = L.Degree;
bbox.East = bbox.West + cell;
}
if (B.G == 1)
{
bbox.North = B.Degree;
bbox.South = bbox.North - cell;
}
else
{
bbox.South = B.Degree;
bbox.North = bbox.South + cell;
}
return(bbox);
}
public LngLat(string dms)
{
var str = dms.Split(",");
this.Lat = new LngLatSegments(str[0]);
this.Lng = new LngLatSegments(str[1]);
}
public void DecodeLngLat(ulong code, ref double lat, ref double lng)
{
var morton = new Morton2D();
uint L = 0; // 横轴
uint B = 0; // 竖轴
morton.Magicbits(code, ref L, ref B);
lng = new LngLatSegments(L, true).Degree;
lat = new LngLatSegments(B, false).Degree;
}
public void DecodeLngLat(UInt64 code, ref double lat, ref double lng)
{
var morton = new Morton2D();
UInt32 L = 0; // 横轴
UInt32 B = 0; // 竖轴
morton.Magicbits(code, ref L, ref B);
lng = new LngLatSegments(L, true).Degree;
lat = new LngLatSegments(B, false).Degree;
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="b">SOT角点二维编码下侧</param>
/// <param name="l">SOT角点二维编码左侧</param>
public LngLat(UInt32 b, UInt32 l)
{
this.Lat = new LngLatSegments(b);
this.Lng = new LngLatSegments(l);
}
public LngLat(double lat, double lng)
{
this.Lat = new LngLatSegments(lat);
this.Lng = new LngLatSegments(lng);
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="b">SOT角点二维编码下侧</param>
/// <param name="l">SOT角点二维编码左侧</param>
public LngLat(uint b, uint l)
{
this.Lat = new LngLatSegments(b, false);
this.Lng = new LngLatSegments(l, true);
}
public uint EncodeLngLat(double x)
{
var segs = new LngLatSegments(x);
return(segs.G << 31 | segs.D << 23 | segs.M << 17 | segs.S << 11 | segs.S11);
}