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; |
} |
} |