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801 | - | 1 | /* |
2 | * |
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3 | * This file is part of QMapControl, |
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4 | * an open-source cross-platform map widget |
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5 | * |
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6 | * Copyright (C) 2007 - 2008 Kai Winter |
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7 | * |
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8 | * This program is free software: you can redistribute it and/or modify |
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9 | * it under the terms of the GNU Lesser General Public License as published by |
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10 | * the Free Software Foundation, either version 3 of the License, or |
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11 | * (at your option) any later version. |
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12 | * |
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13 | * This program is distributed in the hope that it will be useful, |
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | * GNU Lesser General Public License for more details. |
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17 | * |
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18 | * You should have received a copy of the GNU Lesser General Public License |
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19 | * along with QMapControl. If not, see <http://www.gnu.org/licenses/>. |
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20 | * |
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21 | * Contact e-mail: kaiwinter@gmx.de |
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22 | * Program URL : http://qmapcontrol.sourceforge.net/ |
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23 | * |
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24 | */ |
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25 | |||
26 | #include "tilemapadapter.h" |
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27 | namespace qmapcontrol |
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28 | { |
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29 | TileMapAdapter::TileMapAdapter(const QString& host, const QString& serverPath, int tilesize, int minZoom, int maxZoom) |
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30 | :MapAdapter(host, serverPath, tilesize, minZoom, maxZoom) |
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31 | { |
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32 | PI = acos(-1.0); |
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33 | |||
34 | /* |
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35 | Initialize the "substring replace engine". First the string replacement |
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36 | in getQuery was made by QString().arg() but this was very slow. So this |
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37 | splits the servers path into substrings and when calling getQuery the |
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38 | substrings get merged with the parameters of the URL. |
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39 | Pretty complicated, but fast. |
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40 | */ |
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41 | param1 = serverPath.indexOf("%1"); |
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42 | param2 = serverPath.indexOf("%2"); |
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43 | param3 = serverPath.indexOf("%3"); |
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44 | |||
45 | int min = param1 < param2 ? param1 : param2; |
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46 | min = param3 < min ? param3 : min; |
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47 | |||
48 | int max = param1 > param2 ? param1 : param2; |
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49 | max = param3 > max ? param3 : max; |
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50 | |||
51 | int middle = param1+param2+param3-min-max; |
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52 | |||
53 | order[0][0] = min; |
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54 | if (min == param1) |
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55 | order[0][1] = 0; |
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56 | else if (min == param2) |
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57 | order[0][1] = 1; |
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58 | else |
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59 | order[0][1] = 2; |
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60 | |||
61 | order[1][0] = middle; |
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62 | if (middle == param1) |
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63 | order[1][1] = 0; |
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64 | else if (middle == param2) |
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65 | order[1][1] = 1; |
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66 | else |
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67 | order[1][1] = 2; |
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68 | |||
69 | order[2][0] = max; |
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70 | if (max == param1) |
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71 | order[2][1] = 0; |
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72 | else if(max == param2) |
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73 | order[2][1] = 1; |
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74 | else |
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75 | order[2][1] = 2; |
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76 | |||
77 | int zoom = max_zoom < min_zoom ? min_zoom - current_zoom : current_zoom; |
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78 | numberOfTiles = tilesonzoomlevel(zoom); |
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79 | loc.setNumberOptions(QLocale::OmitGroupSeparator); |
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80 | } |
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81 | |||
82 | TileMapAdapter::~TileMapAdapter() |
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83 | { |
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84 | } |
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85 | //TODO: pull out |
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86 | void TileMapAdapter::zoom_in() |
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87 | { |
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88 | if (min_zoom > max_zoom) |
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89 | { |
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90 | //current_zoom = current_zoom-1; |
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91 | current_zoom = current_zoom > max_zoom ? current_zoom-1 : max_zoom; |
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92 | } |
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93 | else if (min_zoom < max_zoom) |
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94 | { |
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95 | //current_zoom = current_zoom+1; |
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96 | current_zoom = current_zoom < max_zoom ? current_zoom+1 : max_zoom; |
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97 | } |
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98 | |||
99 | int zoom = max_zoom < min_zoom ? min_zoom - current_zoom : current_zoom; |
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100 | numberOfTiles = tilesonzoomlevel(zoom); |
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101 | |||
102 | } |
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103 | void TileMapAdapter::zoom_out() |
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104 | { |
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105 | if (min_zoom > max_zoom) |
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106 | { |
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107 | //current_zoom = current_zoom+1; |
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108 | current_zoom = current_zoom < min_zoom ? current_zoom+1 : min_zoom; |
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109 | } |
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110 | else if (min_zoom < max_zoom) |
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111 | { |
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112 | //current_zoom = current_zoom-1; |
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113 | current_zoom = current_zoom > min_zoom ? current_zoom-1 : min_zoom; |
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114 | } |
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115 | |||
116 | int zoom = max_zoom < min_zoom ? min_zoom - current_zoom : current_zoom; |
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117 | numberOfTiles = tilesonzoomlevel(zoom); |
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118 | } |
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119 | |||
120 | qreal TileMapAdapter::deg_rad(qreal x) const |
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121 | { |
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122 | return x * (PI/180.0); |
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123 | } |
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124 | qreal TileMapAdapter::rad_deg(qreal x) const |
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125 | { |
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126 | return x * (180/PI); |
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127 | } |
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128 | |||
129 | QString TileMapAdapter::query(int x, int y, int z) const |
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130 | { |
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131 | x = xoffset(x); |
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132 | y = yoffset(y); |
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133 | |||
134 | int a[3] = {z, x, y}; |
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135 | return QString(serverPath).replace(order[2][0],2, loc.toString(a[order[2][1]])) |
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136 | .replace(order[1][0],2, loc.toString(a[order[1][1]])) |
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137 | .replace(order[0][0],2, loc.toString(a[order[0][1]])); |
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138 | |||
139 | } |
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140 | |||
141 | QPoint TileMapAdapter::coordinateToDisplay(const QPointF& coordinate) const |
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142 | { |
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143 | qreal x = (coordinate.x()+180) * (numberOfTiles*mytilesize)/360.; // coord to pixel! |
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144 | qreal y = (1-(log(tan(PI/4+deg_rad(coordinate.y())/2)) /PI)) /2 * (numberOfTiles*mytilesize); |
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145 | |||
146 | return QPoint(int(x), int(y)); |
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147 | } |
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148 | |||
149 | QPointF TileMapAdapter::displayToCoordinate(const QPoint& point) const |
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150 | { |
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151 | qreal longitude = (point.x()*(360/(numberOfTiles*mytilesize)))-180; |
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152 | qreal latitude = rad_deg(atan(sinh((1-point.y()*(2/(numberOfTiles*mytilesize)))*PI))); |
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153 | |||
154 | return QPointF(longitude, latitude); |
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155 | |||
156 | } |
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157 | |||
158 | bool TileMapAdapter::isValid(int x, int y, int z) const |
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159 | { |
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160 | if (max_zoom < min_zoom) |
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161 | { |
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162 | z= min_zoom - z; |
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163 | } |
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164 | |||
165 | if (x<0 || x>pow(2,z)-1 || |
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166 | y<0 || y>pow(2,z)-1) |
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167 | { |
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168 | return false; |
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169 | } |
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170 | return true; |
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171 | |||
172 | } |
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173 | int TileMapAdapter::tilesonzoomlevel(int zoomlevel) const |
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174 | { |
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175 | return int(pow(2, zoomlevel)); |
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176 | } |
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177 | int TileMapAdapter::xoffset(int x) const |
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178 | { |
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179 | return x; |
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180 | } |
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181 | int TileMapAdapter::yoffset(int y) const |
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182 | { |
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183 | return y; |
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184 | } |
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185 | } |