using DPP_YH_Core.Extensions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using XdCxRhDW.Dto;

namespace XdCxRhDW.Api
{
    /// <summary>
    /// 误差椭圆帮助类
    /// </summary>
    public static class ErrEllipseHepler
    {

        private const string ErrellipDll = @"AddIns\GDOP误差椭圆\DLL_GDOP_Analysis0415";

        /// <summary>
        /// 两星一地误差椭圆
        /// </summary>
        /// <param name="main_eph">主星位置 长度6</param>
        /// <param name="neigh_eph">邻星位置 长度6</param>
        /// <param name="cdbAnt">超短波 长度3</param>
        /// <param name="refStation">参考站 长度3</param>
        /// <param name="Select_Point">定位点 长度3</param>
        /// <param name="dto_err">时差误差(s)</param>
        /// <param name="eph_err"></param>
        /// <param name="Pe">0.5</param>
        /// <param name="LOP_Len"></param>
        /// <returns></returns>
        [DllImport(ErrellipDll, EntryPoint = "Error_Ellipse_2X1D", CallingConvention = CallingConvention.Cdecl)]
        private extern static IntPtr Error_Ellipse_2X1D(double[] main_eph, double[] neigh_eph, double[] cdbAnt, double[] refStation, double[] Select_Point, double dto_err,
        double eph_err, double Pe, ref int LOP_Len);

        /// <summary>
        /// 两星一地误差椭圆
        /// </summary>
        /// <param name="main_eph">主星位置 长度6</param>
        /// <param name="neigh_eph">邻星位置 长度6</param>
        /// <param name="cdbAnt">超短波 长度3</param>
        /// <param name="refStation">参考站 长度3</param>
        /// <param name="Select_Point">定位点 长度3</param>
        /// <param name="dto_err">时差误差(s)</param>
        /// <param name="eph_err"></param>
        /// <param name="Pe">0.5</param>
        /// <param name="LOP_Len"></param>
        /// <returns></returns>
        [DllImport(ErrellipDll, EntryPoint = "Error_Ellipse_2X1D_NoRef", CallingConvention = CallingConvention.Cdecl)]
        private extern static IntPtr Error_Ellipse_2X1D_NoRef(double[] main_eph, double[] neigh_eph, double[] cdbAnt,  double[] Select_Point, double dto_err,
        double eph_err, double Pe, ref int LOP_Len);

        /// <summary>
        /// 获取误差椭圆的长轴(m)、短轴(m)、倾角(°)
        /// </summary>
        /// <param name="posLon"></param>
        /// <param name="posLat"></param>
        /// <param name="mainEph"></param>
        /// <param name="adajEph"></param>
        /// <param name="cdbPos"></param>
        /// <param name="RefGeod"></param>
        /// <param name="DtoErrus"></param>
        /// <param name="EphErrm"></param>
        /// <param name="outputErrPoint"></param>
        /// <returns></returns>
        public static ErrEllipseResDto ErrorEllipse2X1D(double posLon, double posLat, double[] mainEph, double[] adajEph, double[] cdbPos, double[] RefGeod, double DtoErrus, double EphErrm, bool outputErrPoint)
        {
            //IEnumerable<double> res = new List<double>();
            int LOP_Len = 0;
            double Pe = 0.5;
            IntPtr LOP_ValuePtr = Error_Ellipse_2X1D(
                   mainEph,
                   adajEph,
                   cdbPos,
                   RefGeod,
                    new double[3] { posLon, posLat, 0 },
                    DtoErrus * 1e-6,
                    EphErrm,//单位m
                    Pe, ref LOP_Len);
            double[] LOP_Value = new double[LOP_Len];
            if (LOP_Len > 0)
            {
                Marshal.Copy(LOP_ValuePtr, LOP_Value, 0, LOP_Value.Length);
            }
            ErrEllipseResDto res = new ErrEllipseResDto();
            res.LongRadius = LOP_Value[LOP_Value.Length - 3];
            res.ShortRadius = LOP_Value[LOP_Value.Length - 2];
            res.DipAngle = LOP_Value[LOP_Value.Length - 1];
            if (outputErrPoint)
            {
                int count = LOP_Value.Length - 3;

                for (int i = 0; i < count; i += 2)//13 ---01 23 45 67 89
                {
                    res.GeoPoints.Add(new GeoPoint()
                    {
                        Lon = LOP_Value[i],
                        Lat = LOP_Value[i + 1],
                    });
                }
            }
            return res;
        }

        /// <summary>
        /// 获取误差椭圆的长轴(m)、短轴(m)、倾角(°)
        /// </summary>
        /// <param name="posLon"></param>
        /// <param name="posLat"></param>
        /// <param name="mainEph"></param>
        /// <param name="adajEph"></param>
        /// <param name="cdbPos"></param>
        /// <param name="DtoErrus"></param>
        /// <param name="EphErrm"></param>
        /// <param name="outputErrPoint"></param>
        /// <returns></returns>
        public static ErrEllipseResDto ErrorEllipse2X1DNoRef(double posLon, double posLat, double[] mainEph, double[] adajEph, double[] cdbPos,  double DtoErrus, double EphErrm, bool outputErrPoint)
        {
            //IEnumerable<double> res = new List<double>();
            int LOP_Len = 0;
            double Pe = 0.5;
            IntPtr LOP_ValuePtr = Error_Ellipse_2X1D_NoRef(
                   mainEph,
                   adajEph,
                   cdbPos,
                    new double[3] { posLon, posLat, 0 },
                    DtoErrus * 1e-6,
                    EphErrm,//单位m
                    Pe, ref LOP_Len);
            double[] LOP_Value = new double[LOP_Len];
            if (LOP_Len > 0)
            {
                Marshal.Copy(LOP_ValuePtr, LOP_Value, 0, LOP_Value.Length);
            }
            ErrEllipseResDto res = new ErrEllipseResDto();
            res.LongRadius = LOP_Value[LOP_Value.Length - 3];
            res.ShortRadius = LOP_Value[LOP_Value.Length - 2];
            res.DipAngle = LOP_Value[LOP_Value.Length - 1];
            if (outputErrPoint)
            {
                int count = LOP_Value.Length - 3;

                for (int i = 0; i < count; i += 2)//13 ---01 23 45 67 89
                {
                    res.GeoPoints.Add(new GeoPoint()
                    {
                        Lon = LOP_Value[i],
                        Lat = LOP_Value[i + 1],
                    });
                }
            }
            return res;
        }
    }
}