254 lines
8 KiB
C++
254 lines
8 KiB
C++
|
/*==============================================================================
|
||
|
|
|
||
|
|
Copyright 2018 by Roland Rabien
|
||
|
|
For more information visit www.rabiensoftware.com
|
||
|
|
|
||
|
|
==============================================================================*/
|
||
|
|
|
||
|
|
OpenStreetMaps::OpenStreetMaps()
|
||
|
|
: tileSource (OpenStreetMap)
|
||
|
|
{
|
||
|
|
mapTileDir = File::getSpecialLocation (File::tempDirectory).getChildFile ("mapTiles");
|
||
|
|
mapTileDir.createDirectory();
|
||
|
|
}
|
||
|
|
|
||
|
|
OpenStreetMaps::~OpenStreetMaps()
|
||
|
|
{
|
||
|
|
requests.clear();
|
||
|
|
cancelledRequests.clear();
|
||
|
|
}
|
||
|
|
|
||
|
|
Image OpenStreetMaps::fetchTile (int zoom, int x, int y)
|
||
|
|
{
|
||
|
|
int mw = getMapWidthTiles (zoom);
|
||
|
|
x = x % mw;
|
||
|
|
y = y % mw;
|
||
|
|
|
||
|
|
String fname = String::formatted ("%d-%d-%d-%d.png", (int)tileSource, zoom, x, y);
|
||
|
|
|
||
|
|
File file = mapTileDir.getChildFile (fname);
|
||
|
|
|
||
|
|
if (cache.contains (fname))
|
||
|
|
{
|
||
|
|
return cache[fname];
|
||
|
|
}
|
||
|
|
else if (File (file).existsAsFile())
|
||
|
|
{
|
||
|
|
Image img;
|
||
|
|
img = ImageFileFormat::loadFrom (file);
|
||
|
|
|
||
|
|
cache.set (fname, img);
|
||
|
|
|
||
|
|
return img;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
auto newReq = std::make_unique<TileReq> (zoom, x, y);
|
||
|
|
|
||
|
|
bool pending = false;
|
||
|
|
for (int i = 0; i < requests.size(); i++)
|
||
|
|
{
|
||
|
|
if (*requests[i] == *newReq)
|
||
|
|
{
|
||
|
|
pending = true;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (! pending)
|
||
|
|
{
|
||
|
|
requests.add (newReq.release());
|
||
|
|
startRequest();
|
||
|
|
}
|
||
|
|
|
||
|
|
Image img (Image::ARGB, 256, 256, false);
|
||
|
|
img.clear ({0,0,256,256}, Colour (0xff808080));
|
||
|
|
return img;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int OpenStreetMaps::getNumServers()
|
||
|
|
{
|
||
|
|
switch (tileSource)
|
||
|
|
{
|
||
|
|
case OpenStreetMap: return 3;
|
||
|
|
case OpenCycleMap: return 3;
|
||
|
|
case OpenCycleMapTransport: return 3;
|
||
|
|
case OpenCycleMapLandscape: return 3;
|
||
|
|
case StamenTerrain: return 1;
|
||
|
|
case MapQuestOSM: return 4;
|
||
|
|
case MapQuestOpenAerial: return 4;
|
||
|
|
case MapQuestOpenStreetMap: return 3;
|
||
|
|
default: return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int OpenStreetMaps::getServer()
|
||
|
|
{
|
||
|
|
for (int i = 0; i < getNumServers(); i++)
|
||
|
|
{
|
||
|
|
if (! serversInUse.contains(i))
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
void OpenStreetMaps::startRequest()
|
||
|
|
{
|
||
|
|
int server = getServer();
|
||
|
|
if (server == -1)
|
||
|
|
return;
|
||
|
|
|
||
|
|
for (int i = 0; i < requests.size(); i++)
|
||
|
|
{
|
||
|
|
if (requests[i]->reply == nullptr)
|
||
|
|
{
|
||
|
|
char buffer[1024];
|
||
|
|
switch (tileSource)
|
||
|
|
{
|
||
|
|
case OpenStreetMap:
|
||
|
|
sprintf(buffer, "http://%c.tile.openstreetmap.org/%d/%d/%d.png", "abc"[server], requests[i]->zoom, requests[i]->x, requests[i]->y);
|
||
|
|
break;
|
||
|
|
case OpenCycleMap:
|
||
|
|
sprintf(buffer, "http://%c.tile.opencyclemap.org/cycle/%d/%d/%d.png", "abc"[server], requests[i]->zoom, requests[i]->x, requests[i]->y);
|
||
|
|
break;
|
||
|
|
case OpenCycleMapTransport:
|
||
|
|
sprintf(buffer, "http://%c.tile2.opencyclemap.org/transport/%d/%d/%d.png", "abc"[server], requests[i]->zoom, requests[i]->x, requests[i]->y);
|
||
|
|
break;
|
||
|
|
case OpenCycleMapLandscape:
|
||
|
|
sprintf(buffer, "http://%c.tile3.opencyclemap.org/landscape/%d/%d/%d.png", "abc"[server], requests[i]->zoom, requests[i]->x, requests[i]->y);
|
||
|
|
break;
|
||
|
|
case StamenTerrain:
|
||
|
|
sprintf(buffer, "http://tile.stamen.com/terrain/%d/%d/%d.png", requests[i]->zoom, requests[i]->x, requests[i]->y);
|
||
|
|
break;
|
||
|
|
case MapQuestOSM:
|
||
|
|
sprintf(buffer, "http://otile%c.mqcdn.com/tiles/1.0.0/map/%d/%d/%d.jpg", "1234"[server], requests[i]->zoom, requests[i]->x, requests[i]->y);
|
||
|
|
break;
|
||
|
|
case MapQuestOpenAerial:
|
||
|
|
sprintf(buffer, "http://otile%c.mqcdn.com/tiles/1.0.0/sat/%d/%d/%d.jpg", "1234"[server], requests[i]->zoom, requests[i]->x, requests[i]->y);
|
||
|
|
break;
|
||
|
|
case MapQuestOpenStreetMap:
|
||
|
|
sprintf(buffer, "http://%c.tile.openstreetmap.org/%d/%d/%d.png", "abc"[server], requests[i]->zoom, requests[i]->x, requests[i]->y);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
jassertfalse;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
requests[i]->server = server;
|
||
|
|
|
||
|
|
serversInUse.add (server);
|
||
|
|
|
||
|
|
URL url = URL (String (buffer));
|
||
|
|
|
||
|
|
requests[i]->reply = std::make_unique<AsyncDownload> (buffer, [this] (AsyncDownload* ad, juce::MemoryBlock m, bool ok)
|
||
|
|
{
|
||
|
|
finished (ad, m, ok);
|
||
|
|
});
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void OpenStreetMaps::finished (AsyncDownload* reply, juce::MemoryBlock data, bool success)
|
||
|
|
{
|
||
|
|
for (int i = 0; i < requests.size(); i++)
|
||
|
|
{
|
||
|
|
if (requests[i]->reply.get() == reply)
|
||
|
|
{
|
||
|
|
serversInUse.removeFirstMatchingValue (requests[i]->server);
|
||
|
|
requests[i]->server = -1;
|
||
|
|
|
||
|
|
if (success)
|
||
|
|
{
|
||
|
|
String fname;
|
||
|
|
fname = String::formatted ("%d-%d-%d-%d.png", (int)tileSource, requests[i]->zoom, requests[i]->x, requests[i]->y);
|
||
|
|
|
||
|
|
Image img = ImageFileFormat::loadFrom (data.getData(), data.getSize());
|
||
|
|
if (img.isValid())
|
||
|
|
{
|
||
|
|
cache.set (fname, img);
|
||
|
|
|
||
|
|
File dest = mapTileDir.getChildFile (fname);
|
||
|
|
dest.replaceWithData (data.getData(), data.getSize());
|
||
|
|
|
||
|
|
listeners.call (&OpenStreetMaps::Listener::tileFetched, requests[i]->zoom, requests[i]->x, requests[i]->y);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
requests.remove (i);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
startRequest();
|
||
|
|
}
|
||
|
|
|
||
|
|
int OpenStreetMaps::getMapWidthPixels (int zoom)
|
||
|
|
{
|
||
|
|
double numberOfTiles = std::pow (2.0, zoom);
|
||
|
|
return roundToInt (numberOfTiles * 256);
|
||
|
|
}
|
||
|
|
|
||
|
|
int OpenStreetMaps::getMapWidthTiles (int zoom)
|
||
|
|
{
|
||
|
|
return roundToInt (std::pow (2.0, zoom));
|
||
|
|
}
|
||
|
|
|
||
|
|
juce::Point<double> OpenStreetMaps::coordinateToDisplay (juce::Point<double> coordinate, int zoom)
|
||
|
|
{
|
||
|
|
double numberOfTiles = std::pow (2.0, zoom);
|
||
|
|
|
||
|
|
// LonToX
|
||
|
|
double x = (coordinate.getX() + 180) * (numberOfTiles * tilesize) / 360.0;
|
||
|
|
// LatToY
|
||
|
|
double projection = std::log (std::tan (double_Pi / 4 + degreesToRadians (coordinate.getY()) / 2));
|
||
|
|
|
||
|
|
double y = (projection / double_Pi);
|
||
|
|
y = 1 - y;
|
||
|
|
y = y /2 * (numberOfTiles * tilesize);
|
||
|
|
|
||
|
|
return juce::Point<double> (x, y);
|
||
|
|
}
|
||
|
|
|
||
|
|
juce::Point<double> OpenStreetMaps::displayToCoordinate (juce::Point<double> point, int zoom)
|
||
|
|
{
|
||
|
|
// longitude
|
||
|
|
double longitude = (point.getX() * (360 / (std::pow (2.0, zoom) * 256))) - 180;
|
||
|
|
// latitude
|
||
|
|
double latitude = point.getY() * (2 / (std::pow (2.0, zoom) * 256));
|
||
|
|
|
||
|
|
latitude = 1 - latitude;
|
||
|
|
latitude = latitude * double_Pi;
|
||
|
|
latitude = radiansToDegrees (std::atan (std::sinh (latitude)));
|
||
|
|
|
||
|
|
juce::Point<double> coord = {longitude, latitude};
|
||
|
|
return coord;
|
||
|
|
}
|
||
|
|
|
||
|
|
juce::Point<double> OpenStreetMaps::tileForCoordinate (double lat, double lng, int zoom)
|
||
|
|
{
|
||
|
|
double zn = static_cast<double>(1 << zoom);
|
||
|
|
double tx = (lng + 180.0) / 360.0;
|
||
|
|
double ty = (1.0 - std::log (std::tan (lat * double_Pi / 180.0) + 1.0 / std::cos (lat * double_Pi / 180.0)) / double_Pi) / 2.0;
|
||
|
|
return {tx * zn, ty * zn};
|
||
|
|
}
|
||
|
|
|
||
|
|
void OpenStreetMaps::clearQueue()
|
||
|
|
{
|
||
|
|
while (requests.size() > 0)
|
||
|
|
cancelledRequests.add (requests.removeAndReturn (0));
|
||
|
|
|
||
|
|
serversInUse.clear();
|
||
|
|
}
|
||
|
|
|
||
|
|
OpenStreetMaps::TileSource OpenStreetMaps::getTileSource()
|
||
|
|
{
|
||
|
|
return tileSource;
|
||
|
|
}
|
||
|
|
|
||
|
|
void OpenStreetMaps::setTileSource(TileSource t)
|
||
|
|
{
|
||
|
|
tileSource = t;
|
||
|
|
}
|