/// <summary>
/// 坐标转经纬度
/// </summary>
/// <param name="worldPos"></param>
/// <returns></returns>
public static Vector2D Position2LngLat(Vector3 worldPos)
{
Vector2D vector2D = new Vector2D(worldPos.x * 256, worldPos.y * 256);
return(MCTransform.ConvertMC2LL(vector2D));
}
/// <summary>
/// 经纬度转坐标（x，y）
/// 256个MC单位对应1个Unit单位
/// </summary>
/// <param name="lngLat"></param>
/// <returns></returns>
public static Vector3 LngLat2Position(Vector2D lngLat)
{
//转换MC坐标
Vector2D vector2D = MCTransform.ConvertLL2MC(lngLat);
//缩小到Unit单位范围内（-100000, 100000）
return(new Vector2((float)(vector2D.x / 256), (float)(vector2D.y / 256)));
}
/// <summary>
/// 将tile(瓦片)坐标系转换为LngLat(地理)坐标系
/// 18级地图 瓦片图上1个像素等于1个MC单位
/// </summary>
/// <param name="tile">瓦片坐标</param>
/// <param name="pixel">瓦片上的像素坐标</param>
/// <param name="zoom">缩放比例</param>
/// <returns></returns>
public static Vector2D Tile2LngLat(TileData tileData)
{
Vector2D vector2D = new Vector2D();
vector2D.x = tileData.tile.x * 256.0 + tileData.pixel.x;
vector2D.y = tileData.tile.y * 256.0 + tileData.pixel.y;
vector2D /= Math.Pow(2, tileData.zoom - 18);
return(MCTransform.ConvertMC2LL(vector2D));
}
/// <summary>
/// 将LngLat地理坐标系转换为tile瓦片坐标系
/// </summary>
/// <param name="lngLat">经纬度信息</param>
/// <param name="zoom">缩放比例</param>
/// <param name="pixelOffset">像素偏移</param>
/// <returns></returns>
public static TileData LngLat2Tile(Vector2D lngLat, int zoom, Vector2 pixelOffset)
{
TileData tileData = new TileData(zoom);
//转换MC坐标
Vector2D vector2D = MCTransform.ConvertLL2MC(lngLat);
//转换到缩放级别
vector2D *= Math.Pow(2, zoom - 18);
//偏移像素
vector2D += pixelOffset;
tileData.tile.x = (int)(vector2D.x / 256.0);
tileData.tile.y = (int)(vector2D.y / 256.0);
tileData.pixel.x = ((int)vector2D.x % 256);
tileData.pixel.y = ((int)vector2D.y % 256);
return(tileData);
}