235 lines
7.7 KiB
C#
235 lines
7.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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namespace CoordinateSharp {
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/// <summary>
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/// Used for UTM/MGRS Conversions
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/// </summary>
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[Serializable]
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internal class LatZones {
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public static List<String> longZongLetters = new List<String>(new String[]{"C", "D", "E", "F", "G", "H", "J", "K", "L", "M", "N", "P", "Q", "R", "S", "T",
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"U", "V", "W", "X"});
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}
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/// <summary>
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/// Used for handling diagraph determination
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/// </summary>
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[Serializable]
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internal class Digraphs {
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private readonly List<Digraph> digraph1;
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private readonly List<Digraph> digraph2;
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private readonly String[] digraph1Array = { "A", "B", "C", "D", "E", "F", "G", "H", "J", "K", "L", "M", "N", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" };
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private readonly String[] digraph2Array = { "V", "A", "B", "C", "D", "E", "F", "G", "H", "J", "K", "L", "M", "N", "P", "Q", "R", "S", "T", "U", "V" };
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public Digraphs() {
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this.digraph1 = new List<Digraph>();
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this.digraph2 = new List<Digraph>();
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this.digraph1.Add(new Digraph() { Zone = 1, Letter = "A" });
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this.digraph1.Add(new Digraph() { Zone = 2, Letter = "B" });
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this.digraph1.Add(new Digraph() { Zone = 3, Letter = "C" });
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this.digraph1.Add(new Digraph() { Zone = 4, Letter = "D" });
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this.digraph1.Add(new Digraph() { Zone = 5, Letter = "E" });
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this.digraph1.Add(new Digraph() { Zone = 6, Letter = "F" });
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this.digraph1.Add(new Digraph() { Zone = 7, Letter = "G" });
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this.digraph1.Add(new Digraph() { Zone = 8, Letter = "H" });
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this.digraph1.Add(new Digraph() { Zone = 9, Letter = "J" });
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this.digraph1.Add(new Digraph() { Zone = 10, Letter = "K" });
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this.digraph1.Add(new Digraph() { Zone = 11, Letter = "L" });
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this.digraph1.Add(new Digraph() { Zone = 12, Letter = "M" });
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this.digraph1.Add(new Digraph() { Zone = 13, Letter = "N" });
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this.digraph1.Add(new Digraph() { Zone = 14, Letter = "P" });
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this.digraph1.Add(new Digraph() { Zone = 15, Letter = "Q" });
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this.digraph1.Add(new Digraph() { Zone = 16, Letter = "R" });
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this.digraph1.Add(new Digraph() { Zone = 17, Letter = "S" });
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this.digraph1.Add(new Digraph() { Zone = 18, Letter = "T" });
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this.digraph1.Add(new Digraph() { Zone = 19, Letter = "U" });
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this.digraph1.Add(new Digraph() { Zone = 20, Letter = "V" });
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this.digraph1.Add(new Digraph() { Zone = 21, Letter = "W" });
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this.digraph1.Add(new Digraph() { Zone = 22, Letter = "X" });
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this.digraph1.Add(new Digraph() { Zone = 23, Letter = "Y" });
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this.digraph1.Add(new Digraph() { Zone = 24, Letter = "Z" });
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this.digraph1.Add(new Digraph() { Zone = 1, Letter = "A" });
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this.digraph2.Add(new Digraph() { Zone = 0, Letter = "V" });
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this.digraph2.Add(new Digraph() { Zone = 1, Letter = "A" });
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this.digraph2.Add(new Digraph() { Zone = 2, Letter = "B" });
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this.digraph2.Add(new Digraph() { Zone = 3, Letter = "C" });
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this.digraph2.Add(new Digraph() { Zone = 4, Letter = "D" });
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this.digraph2.Add(new Digraph() { Zone = 5, Letter = "E" });
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this.digraph2.Add(new Digraph() { Zone = 6, Letter = "F" });
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this.digraph2.Add(new Digraph() { Zone = 7, Letter = "G" });
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this.digraph2.Add(new Digraph() { Zone = 8, Letter = "H" });
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this.digraph2.Add(new Digraph() { Zone = 9, Letter = "J" });
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this.digraph2.Add(new Digraph() { Zone = 10, Letter = "K" });
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this.digraph2.Add(new Digraph() { Zone = 11, Letter = "L" });
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this.digraph2.Add(new Digraph() { Zone = 12, Letter = "M" });
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this.digraph2.Add(new Digraph() { Zone = 13, Letter = "N" });
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this.digraph2.Add(new Digraph() { Zone = 14, Letter = "P" });
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this.digraph2.Add(new Digraph() { Zone = 15, Letter = "Q" });
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this.digraph2.Add(new Digraph() { Zone = 16, Letter = "R" });
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this.digraph2.Add(new Digraph() { Zone = 17, Letter = "S" });
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this.digraph2.Add(new Digraph() { Zone = 18, Letter = "T" });
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this.digraph2.Add(new Digraph() { Zone = 19, Letter = "U" });
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this.digraph2.Add(new Digraph() { Zone = 20, Letter = "V" });
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}
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internal Int32 GetDigraph1Index(String letter) {
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for (Int32 i = 0; i < this.digraph1Array.Length; i++) {
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if (this.digraph1Array[i].Equals(letter)) {
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return i + 1;
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}
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}
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return -1;
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}
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internal Int32 GetDigraph2Index(String letter) {
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for (Int32 i = 0; i < this.digraph2Array.Length; i++) {
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if (this.digraph2Array[i].Equals(letter)) {
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return i;
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}
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}
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return -1;
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}
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internal String GetDigraph1(Int32 longZone, Double easting) {
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Int32 a1 = longZone;
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Double a2 = 8 * ((a1 - 1) % 3) + 1;
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Double a3 = easting;
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Double a4 = a2 + (Int32)(a3 / 100000) - 1;
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return this.digraph1.Where(x => x.Zone == Math.Floor(a4)).FirstOrDefault().Letter;
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}
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internal String GetDigraph2(Int32 longZone, Double northing) {
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Int32 a1 = longZone;
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Double a2 = 1 + 5 * ((a1 - 1) % 2);
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Double a3 = northing;
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Double a4 = a2 + (Int32)(a3 / 100000);
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a4 = (a2 + (Int32)(a3 / 100000.0)) % 20;
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a4 = Math.Floor(a4);
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if (a4 < 0) {
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a4 += 19;
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}
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return this.digraph2.Where(x => x.Zone == Math.Floor(a4)).FirstOrDefault().Letter;
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}
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}
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/// <summary>
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/// Diagraph model
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/// </summary>
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[Serializable]
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internal class Digraph {
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public Int32 Zone { get; set; }
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public String Letter { get; set; }
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}
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/// <summary>
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/// Used for setting whether a coordinate part is latitudinal or longitudinal.
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/// </summary>
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[Serializable]
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public enum CoordinateType {
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/// <summary>
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/// Latitude
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/// </summary>
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Lat,
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/// <summary>
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/// Longitude
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/// </summary>
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Long
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}
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/// <summary>
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/// Used to set a coordinate part position.
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/// </summary>
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[Serializable]
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public enum CoordinatesPosition : Int32 {
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/// <summary>
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/// North
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/// </summary>
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N,
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/// <summary>
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/// East
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/// </summary>
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E,
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/// <summary>
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/// South
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/// </summary>
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S,
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/// <summary>
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/// West
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/// </summary>
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W
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}
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/// <summary>
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/// Coordinate type datum specification
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/// </summary>
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[Serializable]
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[Flags]
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public enum Coordinate_Datum {
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/// <summary>
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/// Lat Long GeoDetic
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/// </summary>
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LAT_LONG = 1,
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/// <summary>
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/// UTM and MGRS
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/// </summary>
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UTM_MGRS = 2,
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/// <summary>
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/// ECEF
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/// </summary>
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ECEF = 4,
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}
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/// <summary>
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/// Cartesian Coordinate Type
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/// </summary>
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public enum CartesianType {
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/// <summary>
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/// Spherical Cartesian
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/// </summary>
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Cartesian,
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/// <summary>
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/// Earth Centered Earth Fixed
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/// </summary>
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ECEF,
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}
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/// <summary>
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/// Used for easy read math functions
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/// </summary>
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[Serializable]
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internal static class ModM {
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public static Double Mod(Double x, Double y) => x - y * Math.Floor(x / y);
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public static Double ModLon(Double x) => Mod(x + Math.PI, 2 * Math.PI) - Math.PI;
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public static Double ModCrs(Double x) => Mod(x, 2 * Math.PI);
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public static Double ModLat(Double x) => Mod(x + Math.PI / 2, 2 * Math.PI) - Math.PI / 2;
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}
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/// <summary>
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/// Earth Shape for Calculations.
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/// </summary>
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[Serializable]
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public enum Shape {
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/// <summary>
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/// Calculate as sphere (less accurate, more efficient).
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/// </summary>
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Sphere,
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/// <summary>
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/// Calculate as ellipsoid (more accurate, less efficient).
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/// </summary>
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Ellipsoid
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}
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}
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