| 0,0 → 1,117 |
|---|
| /* |
| * |
| * This file is part of QMapControl, |
| * an open-source cross-platform map widget |
| * |
| * Copyright (C) 2007 - 2008 Kai Winter |
| * |
| * This program is free software: you can redistribute it and/or modify |
| * it under the terms of the GNU Lesser General Public License as published by |
| * the Free Software Foundation, either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public License |
| * along with QMapControl. If not, see <http://www.gnu.org/licenses/>. |
| * |
| * Contact e-mail: kaiwinter@gmx.de |
| * Program URL : http://qmapcontrol.sourceforge.net/ |
| * |
| */ |
| |
| #include "emptymapadapter.h" |
| namespace qmapcontrol |
| { |
| EmptyMapAdapter::EmptyMapAdapter(int tileSize, int minZoom, int maxZoom) |
| :MapAdapter("", "", 256, minZoom, maxZoom) |
| { |
| PI = acos(-1.0); |
| |
| numberOfTiles = tilesonzoomlevel(minZoom); |
| } |
| |
| EmptyMapAdapter::~EmptyMapAdapter() |
| { |
| } |
| |
| void EmptyMapAdapter::zoom_in() |
| { |
| if (current_zoom < max_zoom) |
| { |
| current_zoom = current_zoom + 1; |
| } |
| numberOfTiles = tilesonzoomlevel(current_zoom); |
| } |
| |
| void EmptyMapAdapter::zoom_out() |
| { |
| if (current_zoom > min_zoom) |
| { |
| current_zoom = current_zoom - 1; |
| } |
| numberOfTiles = tilesonzoomlevel(current_zoom); |
| } |
| |
| qreal EmptyMapAdapter::deg_rad(qreal x) const |
| { |
| return x * (PI/180.0); |
| } |
| qreal EmptyMapAdapter::rad_deg(qreal x) const |
| { |
| return x * (180/PI); |
| } |
| |
| QString EmptyMapAdapter::query(int x, int y, int z) const |
| { |
| return ""; |
| } |
| |
| QPoint EmptyMapAdapter::coordinateToDisplay(const QPointF& coordinate) const |
| { |
| qreal x = (coordinate.x()+180) * (numberOfTiles*mytilesize)/360.; // coord to pixel! |
| qreal y = (1-(log(tan(PI/4+deg_rad(coordinate.y())/2)) /PI)) /2 * (numberOfTiles*mytilesize); |
| |
| return QPoint(int(x), int(y)); |
| } |
| |
| QPointF EmptyMapAdapter::displayToCoordinate(const QPoint& point) const |
| { |
| qreal longitude = (point.x()*(360/(numberOfTiles*mytilesize)))-180; |
| qreal latitude = rad_deg(atan(sinh((1-point.y()*(2/(numberOfTiles*mytilesize)))*PI))); |
| |
| return QPointF(longitude, latitude); |
| |
| } |
| |
| bool EmptyMapAdapter::isValid(int x, int y, int z) const |
| { |
| if (max_zoom < min_zoom) |
| { |
| z= min_zoom - z; |
| } |
| |
| if (x<0 || x>pow(2,z)-1 || |
| y<0 || y>pow(2,z)-1) |
| { |
| return false; |
| } |
| return true; |
| |
| } |
| int EmptyMapAdapter::tilesonzoomlevel(int zoomlevel) const |
| { |
| return int(pow(2, zoomlevel)); |
| } |
| int EmptyMapAdapter::xoffset(int x) const |
| { |
| return x; |
| } |
| int EmptyMapAdapter::yoffset(int y) const |
| { |
| return y; |
| } |
| } |