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Aded support for downloading hillshading DEMs

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This commit is contained in:
Martin Tůma
2024-02-27 21:36:16 +01:00
parent c33215565f
commit 69c4e6d2dc
7 changed files with 112 additions and 32 deletions
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23
src/data/demloader.cpp
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@ -4,8 +4,6 @@
#include "demloader.h"
#define DOWNLOAD_LIMIT 16
static QList<DEM::Tile> tiles(const RectC &rect)
{
QList<DEM::Tile> list;
@ -34,6 +32,23 @@ DEMLoader::DEMLoader(const QString &dir, QObject *parent)
connect(_downloader, &Downloader::finished, this, &DEMLoader::finished);
}
int DEMLoader::numTiles(const RectC &rect) const
{
QList<DEM::Tile> tl(tiles(rect));
int cnt = 0;
for (int i = 0; i < tl.size(); i++) {
const DEM::Tile &t = tl.at(i);
QString fn(tileFile(t));
QString zn(fn + ".zip");
if (!(QFileInfo::exists(zn) || QFileInfo::exists(fn)))
cnt++;
}
return cnt;
}
bool DEMLoader::loadTiles(const RectC &rect)
{
QList<DEM::Tile> tl(tiles(rect));
@ -58,8 +73,8 @@ bool DEMLoader::loadTiles(const RectC &rect)
dl.append(Download(url, isZip(url) ? zn : fn));
}
if (dl.size() > DOWNLOAD_LIMIT) {
qWarning("DEM download limit exceeded.");
if (dl.size() > DEM_DOWNLOAD_LIMIT) {
qWarning("DEM download limit (%d) exceeded.", DEM_DOWNLOAD_LIMIT);
return false;
}
}

4
src/data/demloader.h
View File

@ -8,6 +8,9 @@
class RectC;
#define DEM_DOWNLOAD_WARNING 4
#define DEM_DOWNLOAD_LIMIT 1024
class DEMLoader : public QObject
{
Q_OBJECT
@ -18,6 +21,7 @@ public:
void setUrl(const QString &url) {_url = url;}
void setAuthorization(const Authorization &authorization);
int numTiles(const RectC &rect) const;
bool loadTiles(const RectC &rect);
bool checkTiles(const RectC &rect) const;