ngoodnight / qtmapviewer

A simple slippy map client built with Qt and OpenGL

qtmapviewer

A simple slippy map client built with Qt and OpenGL

qtmapviewer's Issues

Rendering tiles has problems

The tiles sometimes appear black and sometimes appear mixed of different MISMATCHED zoom levels. It's perfectly fine to have a tile of different zoom level scaled to current zoom level but being mismatched/mis-scaled is kind of issue.

pixelToLatlon() generates wrong lat/lon values

After a long time I again stumbled across qtmapviewer and I though I should give it a try. What I noticed that pixelToLatLon() generates wrong values, As I print lat lon values just after line 27 in MapViewer.cpp i.e.

qtmapviewer/src/MapViewer.cpp

Line 27 in 0682e06

m_map_center = latlonToPixel(m_config.zoom_level, config.center);

like this:

m_map_center = latlonToPixel(m_config.zoom_level, config.center);
qDebug()<<"Lat Lon: "<<pixelToLatlon(m_config.zoom_level, m_map_center);

so it should ouptut this -122.20877392578124, 37.65175620758778 because that's what used in the main.cpp and yet user hasn't panned the map to change the center of the map.

qtmapviewer/src/main.cpp

Line 100 in 0682e06

config.center = QVector2D(-122.20877392578124f, 37.65175620758778f);

By the way, qtmapviewer is the only Qt OpenGL based map viewer which is neat and and to the point! I love it!