Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 801 | - | 1 | /* |
| 2 | * |
||
| 3 | * This file is part of QMapControl, |
||
| 4 | * an open-source cross-platform map widget |
||
| 5 | * |
||
| 6 | * Copyright (C) 2007 - 2008 Kai Winter |
||
| 7 | * |
||
| 8 | * This program is free software: you can redistribute it and/or modify |
||
| 9 | * it under the terms of the GNU Lesser General Public License as published by |
||
| 10 | * the Free Software Foundation, either version 3 of the License, or |
||
| 11 | * (at your option) any later version. |
||
| 12 | * |
||
| 13 | * This program is distributed in the hope that it will be useful, |
||
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||
| 16 | * GNU Lesser General Public License for more details. |
||
| 17 | * |
||
| 18 | * You should have received a copy of the GNU Lesser General Public License |
||
| 19 | * along with QMapControl. If not, see <http://www.gnu.org/licenses/>. |
||
| 20 | * |
||
| 21 | * Contact e-mail: kaiwinter@gmx.de |
||
| 22 | * Program URL : http://qmapcontrol.sourceforge.net/ |
||
| 23 | * |
||
| 24 | */ |
||
| 25 | |||
| 26 | #include "emptymapadapter.h" |
||
| 27 | namespace qmapcontrol |
||
| 28 | { |
||
| 29 | EmptyMapAdapter::EmptyMapAdapter(int tileSize, int minZoom, int maxZoom) |
||
| 30 | :MapAdapter("", "", 256, minZoom, maxZoom) |
||
| 31 | { |
||
| 32 | PI = acos(-1.0); |
||
| 33 | |||
| 34 | numberOfTiles = tilesonzoomlevel(minZoom); |
||
| 35 | } |
||
| 36 | |||
| 37 | EmptyMapAdapter::~EmptyMapAdapter() |
||
| 38 | { |
||
| 39 | } |
||
| 40 | |||
| 41 | void EmptyMapAdapter::zoom_in() |
||
| 42 | { |
||
| 43 | if (current_zoom < max_zoom) |
||
| 44 | { |
||
| 45 | current_zoom = current_zoom + 1; |
||
| 46 | } |
||
| 47 | numberOfTiles = tilesonzoomlevel(current_zoom); |
||
| 48 | } |
||
| 49 | |||
| 50 | void EmptyMapAdapter::zoom_out() |
||
| 51 | { |
||
| 52 | if (current_zoom > min_zoom) |
||
| 53 | { |
||
| 54 | current_zoom = current_zoom - 1; |
||
| 55 | } |
||
| 56 | numberOfTiles = tilesonzoomlevel(current_zoom); |
||
| 57 | } |
||
| 58 | |||
| 59 | qreal EmptyMapAdapter::deg_rad(qreal x) const |
||
| 60 | { |
||
| 61 | return x * (PI/180.0); |
||
| 62 | } |
||
| 63 | qreal EmptyMapAdapter::rad_deg(qreal x) const |
||
| 64 | { |
||
| 65 | return x * (180/PI); |
||
| 66 | } |
||
| 67 | |||
| 68 | QString EmptyMapAdapter::query(int x, int y, int z) const |
||
| 69 | { |
||
| 70 | return ""; |
||
| 71 | } |
||
| 72 | |||
| 73 | QPoint EmptyMapAdapter::coordinateToDisplay(const QPointF& coordinate) const |
||
| 74 | { |
||
| 75 | qreal x = (coordinate.x()+180) * (numberOfTiles*mytilesize)/360.; // coord to pixel! |
||
| 76 | qreal y = (1-(log(tan(PI/4+deg_rad(coordinate.y())/2)) /PI)) /2 * (numberOfTiles*mytilesize); |
||
| 77 | |||
| 78 | return QPoint(int(x), int(y)); |
||
| 79 | } |
||
| 80 | |||
| 81 | QPointF EmptyMapAdapter::displayToCoordinate(const QPoint& point) const |
||
| 82 | { |
||
| 83 | qreal longitude = (point.x()*(360/(numberOfTiles*mytilesize)))-180; |
||
| 84 | qreal latitude = rad_deg(atan(sinh((1-point.y()*(2/(numberOfTiles*mytilesize)))*PI))); |
||
| 85 | |||
| 86 | return QPointF(longitude, latitude); |
||
| 87 | |||
| 88 | } |
||
| 89 | |||
| 90 | bool EmptyMapAdapter::isValid(int x, int y, int z) const |
||
| 91 | { |
||
| 92 | if (max_zoom < min_zoom) |
||
| 93 | { |
||
| 94 | z= min_zoom - z; |
||
| 95 | } |
||
| 96 | |||
| 97 | if (x<0 || x>pow(2,z)-1 || |
||
| 98 | y<0 || y>pow(2,z)-1) |
||
| 99 | { |
||
| 100 | return false; |
||
| 101 | } |
||
| 102 | return true; |
||
| 103 | |||
| 104 | } |
||
| 105 | int EmptyMapAdapter::tilesonzoomlevel(int zoomlevel) const |
||
| 106 | { |
||
| 107 | return int(pow(2, zoomlevel)); |
||
| 108 | } |
||
| 109 | int EmptyMapAdapter::xoffset(int x) const |
||
| 110 | { |
||
| 111 | return x; |
||
| 112 | } |
||
| 113 | int EmptyMapAdapter::yoffset(int y) const |
||
| 114 | { |
||
| 115 | return y; |
||
| 116 | } |
||
| 117 | } |