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Rev | Author | Line No. | Line |
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2498 | - | 1 | |
2 | namespace GMap.NET.Projections |
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3 | { |
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4 | using System; |
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5 | using System.Collections.Generic; |
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6 | |||
7 | /// <summary> |
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8 | /// GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS 84\",6378137,298.257223563,AUTHORITY[\"EPSG\",\"7030\"]],AUTHORITY[\"EPSG\",\"6326\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],UNIT[\"degree\",0.01745329251994328,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"4326\"]] |
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9 | /// PROJCS["LKS92 / Latvia TM",GEOGCS["LKS92",DATUM["D_Latvia_1992",SPHEROID["GRS_1980",6378137,298.257222101]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",24],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",-6000000],UNIT["Meter",1]] |
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10 | /// </summary> |
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11 | public class LKS92Projection : PureProjection |
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12 | { |
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13 | public static readonly LKS92Projection Instance = new LKS92Projection(); |
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14 | |||
15 | static readonly double MinLatitude = 55.55; |
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16 | static readonly double MaxLatitude = 58.22; |
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17 | static readonly double MinLongitude = 20.22; |
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18 | static readonly double MaxLongitude = 28.28; |
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19 | |||
20 | static readonly double orignX = -5120900; |
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21 | static readonly double orignY = 3998100; |
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22 | |||
23 | static readonly double scaleFactor = 0.9996; // scale factor |
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24 | static readonly double centralMeridian = 0.41887902047863912;// Center longitude (projection center) |
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25 | static readonly double latOrigin = 0.0; // center latitude |
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26 | static readonly double falseNorthing = -6000000.0; // y offset in meters |
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27 | static readonly double falseEasting = 500000.0; // x offset in meters |
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28 | static readonly double semiMajor = 6378137.0; // major axis |
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29 | static readonly double semiMinor = 6356752.3141403561; // minor axis |
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30 | static readonly double semiMinor2 = 6356752.3142451793; // minor axis |
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31 | static readonly double metersPerUnit = 1.0; |
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32 | static readonly double COS_67P5 = 0.38268343236508977; // cosine of 67.5 degrees |
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33 | static readonly double AD_C = 1.0026000; // Toms region 1 constant |
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34 | |||
35 | public override RectLatLng Bounds |
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36 | { |
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37 | get |
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38 | { |
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39 | return RectLatLng.FromLTRB(MinLongitude, MaxLatitude, MaxLongitude, MinLatitude); |
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40 | } |
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41 | } |
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42 | |||
43 | GSize tileSize = new GSize(256, 256); |
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44 | public override GSize TileSize |
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45 | { |
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46 | get |
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47 | { |
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48 | return tileSize; |
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49 | } |
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50 | } |
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51 | |||
52 | public override double Axis |
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53 | { |
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54 | get |
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55 | { |
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56 | return 6378137; |
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57 | } |
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58 | } |
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59 | |||
60 | public override double Flattening |
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61 | { |
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62 | get |
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63 | { |
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64 | return (1.0 / 298.257222101); |
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65 | } |
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66 | } |
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67 | |||
68 | public override GPoint FromLatLngToPixel(double lat, double lng, int zoom) |
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69 | { |
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70 | lat = Clip(lat, MinLatitude, MaxLatitude); |
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71 | lng = Clip(lng, MinLongitude, MaxLongitude); |
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72 | |||
73 | double[] lks = new double[] { lng, lat }; |
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74 | lks = DTM10(lks); |
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75 | lks = MTD10(lks); |
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76 | lks = DTM00(lks); |
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77 | |||
78 | double res = GetTileMatrixResolution(zoom); |
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79 | return LksToPixel(lks, res); |
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80 | } |
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81 | |||
82 | static GPoint LksToPixel(double[] lks, double res) |
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83 | { |
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84 | return new GPoint((long)Math.Floor((lks[0] - orignX) / res), (long)Math.Floor((orignY - lks[1]) / res)); |
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85 | } |
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86 | |||
87 | public override PointLatLng FromPixelToLatLng(long x, long y, int zoom) |
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88 | { |
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89 | PointLatLng ret = PointLatLng.Empty; |
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90 | |||
91 | double res = GetTileMatrixResolution(zoom); |
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92 | |||
93 | double[] lks = new double[] { (x * res) + orignX, orignY - (y * res) }; |
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94 | lks = MTD11(lks); |
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95 | lks = DTM10(lks); |
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96 | lks = MTD10(lks); |
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97 | |||
98 | ret.Lat = Clip(lks[1], MinLatitude, MaxLatitude); |
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99 | ret.Lng = Clip(lks[0], MinLongitude, MaxLongitude); |
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100 | |||
101 | return ret; |
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102 | } |
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103 | |||
104 | double[] DTM10(double[] lonlat) |
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105 | { |
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106 | // Eccentricity squared : (a^2 - b^2)/a^2 |
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107 | double es = 1.0 - (semiMinor2 * semiMinor2) / (semiMajor * semiMajor); // e^2 |
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108 | |||
109 | // Second eccentricity squared : (a^2 - b^2)/b^2 |
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110 | double ses = (Math.Pow(semiMajor, 2) - Math.Pow(semiMinor2, 2)) / Math.Pow(semiMinor2, 2); |
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111 | |||
112 | double ba = semiMinor2 / semiMajor; |
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113 | double ab = semiMajor / semiMinor2; |
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114 | |||
115 | double lon = DegreesToRadians(lonlat[0]); |
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116 | double lat = DegreesToRadians(lonlat[1]); |
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117 | double h = lonlat.Length < 3 ? 0 : lonlat[2].Equals(Double.NaN) ? 0 : lonlat[2]; |
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118 | double v = semiMajor / Math.Sqrt(1 - es * Math.Pow(Math.Sin(lat), 2)); |
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119 | double x = (v + h) * Math.Cos(lat) * Math.Cos(lon); |
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120 | double y = (v + h) * Math.Cos(lat) * Math.Sin(lon); |
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121 | double z = ((1 - es) * v + h) * Math.Sin(lat); |
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122 | return new double[] { x, y, z, }; |
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123 | } |
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124 | |||
125 | double[] MTD10(double[] pnt) |
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126 | { |
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127 | // Eccentricity squared : (a^2 - b^2)/a^2 |
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128 | double es = 1.0 - (semiMinor * semiMinor) / (semiMajor * semiMajor); // e^2 |
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129 | |||
130 | // Second eccentricity squared : (a^2 - b^2)/b^2 |
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131 | double ses = (Math.Pow(semiMajor, 2) - Math.Pow(semiMinor, 2)) / Math.Pow(semiMinor, 2); |
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132 | |||
133 | double ba = semiMinor / semiMajor; |
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134 | double ab = semiMajor / semiMinor; |
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135 | |||
136 | bool AtPole = false; // is location in polar region |
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137 | double Z = pnt.Length < 3 ? 0 : pnt[2].Equals(Double.NaN) ? 0 : pnt[2]; |
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138 | |||
139 | double lon = 0; |
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140 | double lat = 0; |
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141 | double Height = 0; |
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142 | if(pnt[0] != 0.0) |
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143 | { |
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144 | lon = Math.Atan2(pnt[1], pnt[0]); |
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145 | } |
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146 | else |
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147 | { |
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148 | if(pnt[1] > 0) |
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149 | { |
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150 | lon = Math.PI / 2; |
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151 | } |
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152 | else |
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153 | if(pnt[1] < 0) |
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154 | { |
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155 | lon = -Math.PI * 0.5; |
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156 | } |
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157 | else |
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158 | { |
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159 | AtPole = true; |
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160 | lon = 0.0; |
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161 | if(Z > 0.0) // north pole |
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162 | { |
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163 | lat = Math.PI * 0.5; |
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164 | } |
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165 | else |
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166 | if(Z < 0.0) // south pole |
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167 | { |
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168 | lat = -Math.PI * 0.5; |
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169 | } |
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170 | else // center of earth |
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171 | { |
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172 | return new double[] { RadiansToDegrees(lon), RadiansToDegrees(Math.PI * 0.5), -semiMinor, }; |
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173 | } |
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174 | } |
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175 | } |
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176 | double W2 = pnt[0] * pnt[0] + pnt[1] * pnt[1]; // Square of distance from Z axis |
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177 | double W = Math.Sqrt(W2); // distance from Z axis |
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178 | double T0 = Z * AD_C; // initial estimate of vertical component |
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179 | double S0 = Math.Sqrt(T0 * T0 + W2); // initial estimate of horizontal component |
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180 | double Sin_B0 = T0 / S0; // sin(B0), B0 is estimate of Bowring aux variable |
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181 | double Cos_B0 = W / S0; // cos(B0) |
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182 | double Sin3_B0 = Math.Pow(Sin_B0, 3); |
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183 | double T1 = Z + semiMinor * ses * Sin3_B0; // corrected estimate of vertical component |
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184 | double Sum = W - semiMajor * es * Cos_B0 * Cos_B0 * Cos_B0; // numerator of cos(phi1) |
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185 | double S1 = Math.Sqrt(T1 * T1 + Sum * Sum); // corrected estimate of horizontal component |
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186 | double Sin_p1 = T1 / S1; // sin(phi1), phi1 is estimated latitude |
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187 | double Cos_p1 = Sum / S1; // cos(phi1) |
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188 | double Rn = semiMajor / Math.Sqrt(1.0 - es * Sin_p1 * Sin_p1); // Earth radius at location |
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189 | if(Cos_p1 >= COS_67P5) |
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190 | { |
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191 | Height = W / Cos_p1 - Rn; |
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192 | } |
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193 | else |
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194 | if(Cos_p1 <= -COS_67P5) |
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195 | { |
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196 | Height = W / -Cos_p1 - Rn; |
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197 | } |
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198 | else |
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199 | { |
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200 | Height = Z / Sin_p1 + Rn * (es - 1.0); |
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201 | } |
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202 | |||
203 | if(!AtPole) |
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204 | { |
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205 | lat = Math.Atan(Sin_p1 / Cos_p1); |
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206 | } |
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207 | return new double[] { RadiansToDegrees(lon), RadiansToDegrees(lat), Height, }; |
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208 | } |
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209 | |||
210 | double[] DTM00(double[] lonlat) |
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211 | { |
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212 | double e0, e1, e2, e3; // eccentricity constants |
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213 | double e, es, esp; // eccentricity constants |
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214 | double ml0; // small value m |
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215 | |||
216 | es = 1.0 - Math.Pow(semiMinor / semiMajor, 2); |
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217 | e = Math.Sqrt(es); |
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218 | e0 = e0fn(es); |
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219 | e1 = e1fn(es); |
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220 | e2 = e2fn(es); |
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221 | e3 = e3fn(es); |
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222 | ml0 = semiMajor * mlfn(e0, e1, e2, e3, latOrigin); |
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223 | esp = es / (1.0 - es); |
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224 | |||
225 | // ... |
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226 | |||
227 | double lon = DegreesToRadians(lonlat[0]); |
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228 | double lat = DegreesToRadians(lonlat[1]); |
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229 | |||
230 | double delta_lon = 0.0; // Delta longitude (Given longitude - center) |
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231 | double sin_phi, cos_phi; // sin and cos value |
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232 | double al, als; // temporary values |
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233 | double c, t, tq; // temporary values |
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234 | double con, n, ml; // cone constant, small m |
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235 | |||
236 | delta_lon = AdjustLongitude(lon - centralMeridian); |
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237 | SinCos(lat, out sin_phi, out cos_phi); |
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238 | |||
239 | al = cos_phi * delta_lon; |
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240 | als = Math.Pow(al, 2); |
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241 | c = esp * Math.Pow(cos_phi, 2); |
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242 | tq = Math.Tan(lat); |
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243 | t = Math.Pow(tq, 2); |
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244 | con = 1.0 - es * Math.Pow(sin_phi, 2); |
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245 | n = semiMajor / Math.Sqrt(con); |
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246 | ml = semiMajor * mlfn(e0, e1, e2, e3, lat); |
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247 | |||
248 | double x = scaleFactor * n * al * (1.0 + als / 6.0 * (1.0 - t + c + als / 20.0 * |
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249 | (5.0 - 18.0 * t + Math.Pow(t, 2) + 72.0 * c - 58.0 * esp))) + falseEasting; |
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250 | |||
251 | double y = scaleFactor * (ml - ml0 + n * tq * (als * (0.5 + als / 24.0 * |
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252 | (5.0 - t + 9.0 * c + 4.0 * Math.Pow(c, 2) + als / 30.0 * (61.0 - 58.0 * t |
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253 | + Math.Pow(t, 2) + 600.0 * c - 330.0 * esp))))) + falseNorthing; |
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254 | |||
255 | if(lonlat.Length < 3) |
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256 | return new double[] { x / metersPerUnit, y / metersPerUnit }; |
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257 | else |
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258 | return new double[] { x / metersPerUnit, y / metersPerUnit, lonlat[2] }; |
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259 | } |
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260 | |||
261 | double[] DTM01(double[] lonlat) |
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262 | { |
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263 | // Eccentricity squared : (a^2 - b^2)/a^2 |
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264 | double es = 1.0 - (semiMinor * semiMinor) / (semiMajor * semiMajor); |
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265 | |||
266 | // Second eccentricity squared : (a^2 - b^2)/b^2 |
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267 | double ses = (Math.Pow(semiMajor, 2) - Math.Pow(semiMinor, 2)) / Math.Pow(semiMinor, 2); |
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268 | |||
269 | double ba = semiMinor / semiMajor; |
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270 | double ab = semiMajor / semiMinor; |
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271 | |||
272 | double lon = DegreesToRadians(lonlat[0]); |
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273 | double lat = DegreesToRadians(lonlat[1]); |
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274 | double h = lonlat.Length < 3 ? 0 : lonlat[2].Equals(Double.NaN) ? 0 : lonlat[2]; |
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275 | double v = semiMajor / Math.Sqrt(1 - es * Math.Pow(Math.Sin(lat), 2)); |
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276 | double x = (v + h) * Math.Cos(lat) * Math.Cos(lon); |
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277 | double y = (v + h) * Math.Cos(lat) * Math.Sin(lon); |
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278 | double z = ((1 - es) * v + h) * Math.Sin(lat); |
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279 | return new double[] { x, y, z, }; |
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280 | } |
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281 | |||
282 | double[] MTD01(double[] pnt) |
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283 | { |
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284 | // Eccentricity squared : (a^2 - b^2)/a^2 |
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285 | double es = 1.0 - (semiMinor2 * semiMinor2) / (semiMajor * semiMajor); |
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286 | |||
287 | // Second eccentricity squared : (a^2 - b^2)/b^2 |
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288 | double ses = (Math.Pow(semiMajor, 2) - Math.Pow(semiMinor2, 2)) / Math.Pow(semiMinor2, 2); |
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289 | |||
290 | double ba = semiMinor2 / semiMajor; |
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291 | double ab = semiMajor / semiMinor2; |
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292 | |||
293 | bool At_Pole = false; // is location in polar region |
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294 | double Z = pnt.Length < 3 ? 0 : pnt[2].Equals(Double.NaN) ? 0 : pnt[2]; |
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295 | |||
296 | double lon = 0; |
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297 | double lat = 0; |
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298 | double Height = 0; |
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299 | if(pnt[0] != 0.0) |
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300 | { |
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301 | lon = Math.Atan2(pnt[1], pnt[0]); |
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302 | } |
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303 | else |
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304 | { |
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305 | if(pnt[1] > 0) |
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306 | { |
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307 | lon = Math.PI / 2; |
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308 | } |
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309 | else |
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310 | if(pnt[1] < 0) |
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311 | { |
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312 | lon = -Math.PI * 0.5; |
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313 | } |
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314 | else |
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315 | { |
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316 | At_Pole = true; |
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317 | lon = 0.0; |
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318 | if(Z > 0.0) // north pole |
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319 | { |
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320 | lat = Math.PI * 0.5; |
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321 | } |
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322 | else |
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323 | if(Z < 0.0) // south pole |
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324 | { |
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325 | lat = -Math.PI * 0.5; |
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326 | } |
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327 | else // center of earth |
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328 | { |
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329 | return new double[] { RadiansToDegrees(lon), RadiansToDegrees(Math.PI * 0.5), -semiMinor2, }; |
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330 | } |
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331 | } |
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332 | } |
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333 | |||
334 | double W2 = pnt[0] * pnt[0] + pnt[1] * pnt[1]; // Square of distance from Z axis |
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335 | double W = Math.Sqrt(W2); // distance from Z axis |
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336 | double T0 = Z * AD_C; // initial estimate of vertical component |
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337 | double S0 = Math.Sqrt(T0 * T0 + W2); //initial estimate of horizontal component |
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338 | double Sin_B0 = T0 / S0; // sin(B0), B0 is estimate of Bowring aux variable |
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339 | double Cos_B0 = W / S0; // cos(B0) |
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340 | double Sin3_B0 = Math.Pow(Sin_B0, 3); |
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341 | double T1 = Z + semiMinor2 * ses * Sin3_B0; //corrected estimate of vertical component |
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342 | double Sum = W - semiMajor * es * Cos_B0 * Cos_B0 * Cos_B0; // numerator of cos(phi1) |
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343 | double S1 = Math.Sqrt(T1 * T1 + Sum * Sum); // corrected estimate of horizontal component |
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344 | double Sin_p1 = T1 / S1; // sin(phi1), phi1 is estimated latitude |
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345 | double Cos_p1 = Sum / S1; // cos(phi1) |
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346 | double Rn = semiMajor / Math.Sqrt(1.0 - es * Sin_p1 * Sin_p1); // Earth radius at location |
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347 | |||
348 | if(Cos_p1 >= COS_67P5) |
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349 | { |
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350 | Height = W / Cos_p1 - Rn; |
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351 | } |
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352 | else |
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353 | if(Cos_p1 <= -COS_67P5) |
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354 | { |
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355 | Height = W / -Cos_p1 - Rn; |
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356 | } |
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357 | else |
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358 | { |
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359 | Height = Z / Sin_p1 + Rn * (es - 1.0); |
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360 | } |
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361 | |||
362 | if(!At_Pole) |
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363 | { |
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364 | lat = Math.Atan(Sin_p1 / Cos_p1); |
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365 | } |
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366 | return new double[] { RadiansToDegrees(lon), RadiansToDegrees(lat), Height, }; |
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367 | } |
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368 | |||
369 | double[] MTD11(double[] p) |
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370 | { |
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371 | double e0, e1, e2, e3; // eccentricity constants |
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372 | double e, es, esp; // eccentricity constants |
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373 | double ml0; // small value m |
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374 | |||
375 | es = 1.0 - Math.Pow(semiMinor / semiMajor, 2); |
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376 | e = Math.Sqrt(es); |
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377 | e0 = e0fn(es); |
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378 | e1 = e1fn(es); |
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379 | e2 = e2fn(es); |
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380 | e3 = e3fn(es); |
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381 | ml0 = semiMajor * mlfn(e0, e1, e2, e3, latOrigin); |
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382 | esp = es / (1.0 - es); |
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383 | |||
384 | // ... |
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385 | |||
386 | double con, phi; |
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387 | double delta_phi; |
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388 | long i; |
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389 | double sin_phi, cos_phi, tan_phi; |
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390 | double c, cs, t, ts, n, r, d, ds; |
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391 | long max_iter = 6; |
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392 | |||
393 | double x = p[0] * metersPerUnit - falseEasting; |
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394 | double y = p[1] * metersPerUnit - falseNorthing; |
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395 | |||
396 | con = (ml0 + y / scaleFactor) / semiMajor; |
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397 | phi = con; |
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398 | for(i = 0; ; i++) |
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399 | { |
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400 | delta_phi = ((con + e1 * Math.Sin(2.0 * phi) - e2 * Math.Sin(4.0 * phi) + e3 * Math.Sin(6.0 * phi)) / e0) - phi; |
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401 | phi += delta_phi; |
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402 | |||
403 | if(Math.Abs(delta_phi) <= EPSLoN) |
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404 | break; |
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405 | |||
406 | if(i >= max_iter) |
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407 | throw new ArgumentException("Latitude failed to converge"); |
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408 | } |
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409 | |||
410 | if(Math.Abs(phi) < HALF_PI) |
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411 | { |
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412 | SinCos(phi, out sin_phi, out cos_phi); |
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413 | tan_phi = Math.Tan(phi); |
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414 | c = esp * Math.Pow(cos_phi, 2); |
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415 | cs = Math.Pow(c, 2); |
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416 | t = Math.Pow(tan_phi, 2); |
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417 | ts = Math.Pow(t, 2); |
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418 | con = 1.0 - es * Math.Pow(sin_phi, 2); |
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419 | n = semiMajor / Math.Sqrt(con); |
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420 | r = n * (1.0 - es) / con; |
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421 | d = x / (n * scaleFactor); |
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422 | ds = Math.Pow(d, 2); |
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423 | |||
424 | double lat = phi - (n * tan_phi * ds / r) * (0.5 - ds / 24.0 * (5.0 + 3.0 * t + |
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425 | 10.0 * c - 4.0 * cs - 9.0 * esp - ds / 30.0 * (61.0 + 90.0 * t + |
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426 | 298.0 * c + 45.0 * ts - 252.0 * esp - 3.0 * cs))); |
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427 | |||
428 | double lon = AdjustLongitude(centralMeridian + (d * (1.0 - ds / 6.0 * (1.0 + 2.0 * t + |
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429 | c - ds / 20.0 * (5.0 - 2.0 * c + 28.0 * t - 3.0 * cs + 8.0 * esp + |
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430 | 24.0 * ts))) / cos_phi)); |
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431 | |||
432 | if(p.Length < 3) |
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433 | return new double[] { RadiansToDegrees(lon), RadiansToDegrees(lat) }; |
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434 | else |
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435 | return new double[] { RadiansToDegrees(lon), RadiansToDegrees(lat), p[2] }; |
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436 | } |
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437 | else |
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438 | { |
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439 | if(p.Length < 3) |
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440 | return new double[] { RadiansToDegrees(HALF_PI * Sign(y)), RadiansToDegrees(centralMeridian) }; |
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441 | else |
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442 | return new double[] { RadiansToDegrees(HALF_PI * Sign(y)), RadiansToDegrees(centralMeridian), p[2] }; |
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443 | } |
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444 | } |
||
445 | |||
446 | #region -- levels info -- |
||
447 | /* |
||
448 | "spatialReference":{"wkid":3059,"latestWkid":3059},"singleFusedMapCache":true, |
||
449 | * "tileInfo":{"rows":256,"cols":256,"dpi":96,"format":"PNG8","compressionQuality":0, |
||
450 | * "origin":{"x":-5120900,"y":3998100}, |
||
451 | * "spatialReference":{"wkid":3059,"latestWkid":3059}, |
||
452 | * |
||
453 | * "lods":[ |
||
454 | * {"level":0,"resolution":1587.5031750063501,"scale":6000000}, |
||
455 | * {"level":1,"resolution":793.7515875031751,"scale":3000000}, |
||
456 | * {"level":2,"resolution":529.1677250021168,"scale":2000000}, |
||
457 | * {"level":3,"resolution":264.5838625010584,"scale":1000000}, |
||
458 | * {"level":4,"resolution":132.2919312505292,"scale":500000}, |
||
459 | * {"level":5,"resolution":52.91677250021167,"scale":200000}, |
||
460 | * {"level":6,"resolution":26.458386250105836,"scale":100000}, |
||
461 | * {"level":7,"resolution":13.229193125052918,"scale":50000}, |
||
462 | * {"level":8,"resolution":6.614596562526459,"scale":25000}, |
||
463 | * {"level":9,"resolution":2.6458386250105836,"scale":10000}, |
||
464 | * {"level":10,"resolution":1.3229193125052918,"scale":5000}, |
||
465 | * {"level":11,"resolution":0.5291677250021167,"scale":2000}]}, |
||
466 | * |
||
467 | * "initialExtent": |
||
468 | * {"xmin":352544.7096929534,"ymin":240883.24768736016, |
||
469 | * "xmax":722784.980307047,"ymax":539178.473189597, |
||
470 | * "spatialReference":{"wkid":3059,"latestWkid":3059}}, |
||
471 | * |
||
472 | * "fullExtent": |
||
473 | * {"xmin":312773.6900000004,"ymin":172941, |
||
474 | * "xmax":762556,"ymax":438880, |
||
475 | * "spatialReference":{"wkid":3059,"latestWkid":3059}}, |
||
476 | * |
||
477 | * "minScale":6000000,"maxScale":2000,"units":"esriMeters","supportedImageFormatTypes":"PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP", |
||
478 | * "documentInfo":{"Title":"ikartelv","Author":"gstanevicius","Comments":"","Subject":"","Category":"","AntialiasingMode":"None","TextAntialiasingMode":"Force","Keywords":""},"capabilities":"Map,Query,Data","supportedQueryFormats":"JSON, AMF","exportTilesAllowed":false,"maxRecordCount":500,"maxImageHeight":4096,"maxImageWidth":4096,"supportedExtensions":"KmlServer, WMSServer"}); |
||
479 | */ |
||
480 | |||
481 | #endregion |
||
482 | |||
483 | public static double GetTileMatrixResolution(int zoom) |
||
484 | { |
||
485 | double ret = 0; |
||
486 | |||
487 | switch(zoom) |
||
488 | { |
||
489 | #region -- sizes -- |
||
490 | case 0: |
||
491 | { |
||
492 | ret = 1587.5031750063501; |
||
493 | } |
||
494 | break; |
||
495 | |||
496 | case 1: |
||
497 | { |
||
498 | ret = 793.7515875031751; |
||
499 | } |
||
500 | break; |
||
501 | |||
502 | case 2: |
||
503 | { |
||
504 | ret = 529.1677250021168; |
||
505 | } |
||
506 | break; |
||
507 | |||
508 | case 3: |
||
509 | { |
||
510 | ret = 264.5838625010584; |
||
511 | } |
||
512 | break; |
||
513 | |||
514 | case 4: |
||
515 | { |
||
516 | ret = 132.2919312505292; |
||
517 | } |
||
518 | break; |
||
519 | |||
520 | case 5: |
||
521 | { |
||
522 | ret = 52.91677250021167; |
||
523 | } |
||
524 | break; |
||
525 | |||
526 | case 6: |
||
527 | { |
||
528 | ret = 26.458386250105836; |
||
529 | } |
||
530 | break; |
||
531 | |||
532 | case 7: |
||
533 | { |
||
534 | ret = 13.229193125052918; |
||
535 | } |
||
536 | break; |
||
537 | |||
538 | case 8: |
||
539 | { |
||
540 | ret = 6.614596562526459; |
||
541 | } |
||
542 | break; |
||
543 | |||
544 | case 9: |
||
545 | { |
||
546 | ret = 2.6458386250105836; |
||
547 | } |
||
548 | break; |
||
549 | |||
550 | case 10: |
||
551 | { |
||
552 | ret = 1.3229193125052918; |
||
553 | } |
||
554 | break; |
||
555 | |||
556 | case 11: |
||
557 | { |
||
558 | ret = 0.5291677250021167; |
||
559 | } |
||
560 | break; |
||
561 | #endregion |
||
562 | } |
||
563 | |||
564 | return ret; |
||
565 | } |
||
566 | |||
567 | public override double GetGroundResolution(int zoom, double latitude) |
||
568 | { |
||
569 | return GetTileMatrixResolution(zoom); |
||
570 | } |
||
571 | |||
572 | Dictionary<int, GSize> extentMatrixMin; |
||
573 | Dictionary<int, GSize> extentMatrixMax; |
||
574 | |||
575 | public override GSize GetTileMatrixMinXY(int zoom) |
||
576 | { |
||
577 | if(extentMatrixMin == null) |
||
578 | { |
||
579 | GenerateExtents(); |
||
580 | } |
||
581 | return extentMatrixMin[zoom]; |
||
582 | } |
||
583 | |||
584 | public override GSize GetTileMatrixMaxXY(int zoom) |
||
585 | { |
||
586 | if(extentMatrixMax == null) |
||
587 | { |
||
588 | GenerateExtents(); |
||
589 | } |
||
590 | return extentMatrixMax[zoom]; |
||
591 | } |
||
592 | |||
593 | void GenerateExtents() |
||
594 | { |
||
595 | extentMatrixMin = new Dictionary<int, GSize>(); |
||
596 | extentMatrixMax = new Dictionary<int, GSize>(); |
||
597 | //RectLatLng Extent = RectLatLng.FromLTRB(219818.60040028347, 6407318.126743601, 747927.9899523959, 5826291.964691277); |
||
598 | |||
599 | for(int i = 0; i <= 11; i++) |
||
600 | { |
||
601 | double res = GetTileMatrixResolution(i); |
||
602 | //extentMatrixMin.Add(i, new GSize(FromPixelToTileXY(LksToPixel(new double[]{ Extent.Left, Extent.Top }, res)))); |
||
603 | //extentMatrixMax.Add(i, new GSize(FromPixelToTileXY(LksToPixel(new double[] { Extent.Right, Extent.Bottom }, res)))); |
||
604 | |||
605 | extentMatrixMin.Add(i, new GSize(FromPixelToTileXY(FromLatLngToPixel(Bounds.LocationTopLeft, i)))); |
||
606 | extentMatrixMax.Add(i, new GSize(FromPixelToTileXY(FromLatLngToPixel(Bounds.LocationRightBottom, i)))); |
||
607 | } |
||
608 | } |
||
609 | } |
||
610 | } |