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22 | * Program URL : http://qmapcontrol.sourceforge.net/ |
22 | * Program URL : http://qmapcontrol.sourceforge.net/ |
23 | * |
23 | * |
24 | */ |
24 | */ |
Line 25... | Line 25... | ||
25 | 25 | ||
26 | #include "googlesatmapadapter.h" |
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27 | - | ||
28 | #include <math.h> |
26 | #include "googlesatmapadapter.h" |
29 | namespace qmapcontrol |
27 | namespace qmapcontrol |
30 | { |
28 | { |
31 | GoogleSatMapAdapter::GoogleSatMapAdapter() |
29 | GoogleSatMapAdapter::GoogleSatMapAdapter() |
32 | : TileMapAdapter("kh.google.com", "/kh?n=404&v=8&t=trtqtt", 256, 0, 19) |
30 | : TileMapAdapter("khm1.google.com", "/kh/v=57&hl=de&x=%2&y=%3&z=%1&s=", 256, 0, 20) |
33 | { |
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34 | // name = "googlesat"; |
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35 | - | ||
36 | numberOfTiles = pow(2, current_zoom+0.0); |
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37 | coord_per_x_tile = 360. / numberOfTiles; |
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38 | coord_per_y_tile = 180. / numberOfTiles; |
31 | { |
Line 39... | Line 32... | ||
39 | } |
32 | } |
40 | 33 | ||
41 | GoogleSatMapAdapter::~GoogleSatMapAdapter() |
34 | GoogleSatMapAdapter::~GoogleSatMapAdapter() |
42 | { |
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43 | } |
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44 | - | ||
45 | QString GoogleSatMapAdapter::getHost() const |
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46 | { |
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47 | int random = qrand() % 4; |
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48 | return QString("kh%1.google.com").arg(random); |
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49 | } |
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50 | - | ||
51 | QPoint GoogleSatMapAdapter::coordinateToDisplay(const QPointF& coordinate) const |
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52 | { |
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53 | //double x = ((coordinate.x()+180)*(tilesize*numberOfTiles/360)); |
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54 | //double y = (((coordinate.y()*-1)+90)*(tilesize*numberOfTiles/180)); |
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55 | - | ||
56 | qreal x = (coordinate.x()+180.) * (numberOfTiles*mytilesize)/360.; // coord to pixel! |
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57 | //double y = -1*(coordinate.y()-90) * (numberOfTiles*tilesize)/180.; // coord to pixel! |
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58 | qreal y = (getMercatorYCoord(coordinate.y())-M_PI) * -1 * (numberOfTiles*mytilesize)/(2*M_PI); // coord to pixel! |
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59 | return QPoint(int(x), int(y)); |
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60 | } |
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61 | - | ||
62 | QPointF GoogleSatMapAdapter::displayToCoordinate(const QPoint& point) const |
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63 | { |
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64 | //double lon = ((point.x()/tilesize*numberOfTiles)*360)-180; |
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65 | //double lat = (((point.y()/tilesize*numberOfTiles)*180)-90)*-1; |
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66 | - | ||
67 | qreal lon = (point.x()*(360./(numberOfTiles*mytilesize)))-180.; |
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68 | //double lat = -(point.y()*(180./(numberOfTiles*tilesize)))+90; |
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69 | //qreal lat = getMercatorLatitude(point.y()*-1*(2*M_PI/(numberOfTiles*tilesize)) + M_PI); |
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70 | qreal lat = lat *180./M_PI; |
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71 | return QPointF(lon, lat); |
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72 | } |
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73 | - | ||
74 | qreal GoogleSatMapAdapter::getMercatorLatitude(qreal YCoord) const |
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75 | { |
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76 | //http://welcome.warnercnr.colostate.edu/class_info/nr502/lg4/projection_mathematics/converting.html |
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77 | if (YCoord > M_PI) return 9999.; |
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78 | if (YCoord < -M_PI) return -9999.; |
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79 | - | ||
80 | qreal t = atan(exp(YCoord)); |
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81 | qreal res = (2.*(t))-(M_PI/2.); |
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82 | return res; |
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83 | } |
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84 | - | ||
85 | qreal GoogleSatMapAdapter::getMercatorYCoord(qreal lati) const |
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86 | { |
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87 | qreal lat = lati; |
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88 | - | ||
89 | // conversion degre=>radians |
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90 | qreal phi = M_PI * lat / 180; |
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91 | - | ||
92 | qreal res; |
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93 | //double temp = Math.Tan(Math.PI / 4 - phi / 2); |
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94 | //res = Math.Log(temp); |
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95 | res = 0.5 * log((1 + sin(phi)) / (1 - sin(phi))); |
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96 | - | ||
97 | return res; |
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98 | } |
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99 | - | ||
100 | void GoogleSatMapAdapter::zoom_in() |
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101 | { |
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102 | current_zoom+=1; |
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103 | numberOfTiles = pow(2, current_zoom+0.0); |
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104 | coord_per_x_tile = 360. / numberOfTiles; |
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105 | coord_per_y_tile = 180. / numberOfTiles; |
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106 | } |
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107 | - | ||
108 | void GoogleSatMapAdapter::zoom_out() |
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109 | { |
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110 | current_zoom-=1; |
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111 | numberOfTiles = pow(2, current_zoom+0.0); |
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112 | coord_per_x_tile = 360. / numberOfTiles; |
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113 | coord_per_y_tile = 180. / numberOfTiles; |
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114 | } |
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115 | - | ||
116 | bool GoogleSatMapAdapter::isValid(int x, int y, int z) const |
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117 | { |
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118 | if ((x>=0 && x < numberOfTiles) && (y>=0 && y < numberOfTiles) && z>=0) |
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119 | { |
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120 | return true; |
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121 | } |
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122 | return false; |
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123 | } |
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124 | QString GoogleSatMapAdapter::query(int i, int j, int z) const |
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125 | { |
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126 | return getQ(-180+i*coord_per_x_tile, |
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127 | 90-(j+1)*coord_per_y_tile, z); |
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128 | } |
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129 | - | ||
130 | QString GoogleSatMapAdapter::getQ(qreal longitude, qreal latitude, int zoom) const |
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131 | { |
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132 | qreal xmin=-180; |
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133 | qreal xmax=180; |
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134 | qreal ymin=-90; |
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135 | qreal ymax=90; |
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136 | - | ||
137 | qreal xmoy=0; |
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138 | qreal ymoy=0; |
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139 | QString location="t"; |
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140 | - | ||
141 | //Google uses a latitude divided by 2; |
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142 | qreal halflat = latitude; |
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143 | - | ||
144 | for (int i = 0; i < zoom; i++) |
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145 | { |
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146 | xmoy = (xmax + xmin) / 2; |
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147 | ymoy = (ymax + ymin) / 2; |
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148 | if (halflat >= ymoy) //upper part (q or r) |
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149 | { |
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150 | ymin = ymoy; |
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151 | if (longitude < xmoy) |
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152 | { /*q*/ |
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153 | location+= "q"; |
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154 | xmax = xmoy; |
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155 | } |
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156 | else |
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157 | {/*r*/ |
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158 | location+= "r"; |
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159 | xmin = xmoy; |
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160 | } |
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161 | } |
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162 | else //lower part (t or s) |
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163 | { |
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164 | ymax = ymoy; |
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165 | if (longitude < xmoy) |
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166 | { /*t*/ |
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167 | - | ||
168 | location+= "t"; |
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169 | xmax = xmoy; |
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170 | } |
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171 | else |
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172 | {/*s*/ |
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173 | location+= "s"; |
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174 | xmin = xmoy; |
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175 | } |
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176 | } |
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177 | } |
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178 | return QString("/kh?n=404&v=24&t=%1").arg(location); |
35 | { |
179 | } |
- |