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2498 | - | 1 | |
2 | namespace GMap.NET.Projections |
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3 | { |
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4 | #if OLD_PERGO |
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5 | using System; |
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6 | |||
7 | /// <summary> |
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8 | /// Plate Carrée (literally, “plane square”) projection |
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9 | /// PROJCS["WGS 84 / World Equidistant Cylindrical",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],UNIT["Meter",1]] |
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10 | /// </summary> |
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11 | public class PlateCarreeProjectionPergo : PureProjection |
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12 | { |
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13 | public static readonly PlateCarreeProjectionPergo Instance = new PlateCarreeProjectionPergo(); |
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14 | |||
15 | static readonly double MinLatitude = -85.05112878; |
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16 | static readonly double MaxLatitude = 85.05112878; |
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17 | static readonly double MinLongitude = -180; |
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18 | static readonly double MaxLongitude = 180; |
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19 | |||
20 | public override RectLatLng Bounds |
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21 | { |
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22 | get |
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23 | { |
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24 | return RectLatLng.FromLTRB(MinLongitude, MaxLatitude, MaxLongitude, MinLatitude); |
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25 | } |
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26 | } |
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27 | |||
28 | GSize tileSize = new GSize(256, 256); |
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29 | public override GSize TileSize |
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30 | { |
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31 | get |
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32 | { |
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33 | return tileSize; |
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34 | } |
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35 | } |
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36 | |||
37 | public override double Axis |
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38 | { |
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39 | get |
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40 | { |
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41 | return 6378137; |
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42 | } |
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43 | } |
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44 | |||
45 | public override double Flattening |
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46 | { |
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47 | get |
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48 | { |
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49 | return (1.0 / 298.257223563); |
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50 | } |
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51 | } |
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52 | |||
53 | public override GPoint FromLatLngToPixel(double lat, double lng, int zoom) |
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54 | { |
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55 | GPoint ret = GPoint.Empty; |
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56 | |||
57 | lat = Clip(lat, MinLatitude, MaxLatitude); |
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58 | lng = Clip(lng, MinLongitude, MaxLongitude); |
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59 | |||
60 | GSize s = GetTileMatrixSizePixel(zoom); |
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61 | double mapSizeX = s.Width; |
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62 | double mapSizeY = s.Height; |
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63 | |||
64 | double scale = 360.0 / mapSizeX; |
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65 | |||
66 | ret.Y = (long)((90.0 - lat) / scale); |
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67 | ret.X = (long)((lng + 180.0) / scale); |
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68 | |||
69 | return ret; |
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70 | } |
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71 | |||
72 | public override PointLatLng FromPixelToLatLng(long x, long y, int zoom) |
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73 | { |
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74 | PointLatLng ret = PointLatLng.Empty; |
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75 | |||
76 | GSize s = GetTileMatrixSizePixel(zoom); |
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77 | double mapSizeX = s.Width; |
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78 | double mapSizeY = s.Height; |
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79 | |||
80 | double scale = 360.0 / mapSizeX; |
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81 | |||
82 | ret.Lat = 90 - (y * scale); |
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83 | ret.Lng = (x * scale) - 180; |
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84 | |||
85 | return ret; |
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86 | } |
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87 | |||
88 | public override GSize GetTileMatrixMaxXY(int zoom) |
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89 | { |
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90 | long y = (long)Math.Pow(2, zoom); |
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91 | return new GSize((2*y) - 1, y - 1); |
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92 | } |
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93 | |||
94 | public override GSize GetTileMatrixMinXY(int zoom) |
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95 | { |
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96 | return new GSize(0, 0); |
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97 | } |
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98 | } |
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99 | #endif |
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100 | } |