Missing parts of dashed line, line and road

[PhungVanHoa]

Hi, we implement mapsforge/vtm library in our project and when using online vector maps from maptiler (OpenMapTilesMvtTileSource: https://api.maptiler.com/tiles/v3), we got rendering Issues, missing parts of dashed line and overlapping line (or road) above water

Expect:
https://api.maptiler.com/maps/basic-v2/?key=bkB2QxUTpyeGpXpySRpi#17.79/16.442555/107.591512/-26.6

https://api.maptiler.com/maps/basic-v2/?key=bkB2QxUTpyeGpXpySRpi#16.86/16.464592/107.583731/-41

https://api.maptiler.com/maps/basic-v2/?key=bkB2QxUTpyeGpXpySRpi#16.76/16.479278/107.576668/-26.6

Here is my code:

UrlTileSource tileSource = OpenMapTilesMvtTileSource.builder()
        .apiKey("bkB2QxUTpyeGpXpySRpi") // Put
        .httpFactory(new OkHttpEngine.OkHttpFactory())
        .locale("vi")
        .build();
VectorTileLayer l = mMap.setBaseMap(tileSource);
mMap.setTheme(VtmThemes.OPENMAPTILES);
mMap.layers().add(new BuildingLayer(mMap, l));
mMap.layers().add(new LabelLayer(mMap, l));
TileGridLayer mGridLayer = new TileGridLayer(mMap);
mMap.layers().add(mGridLayer);
mMap.setMapPosition(new MapPosition(16.4479445, 107.5957691, 1 << 16));

Thank you for your work!

[devemux86]

Probably the OpenMapTiles theme in VTM needs improvements.

Most users focus on offline maps, so online maps have little support.

The current OpenMapTiles theme is for demonstration purposes, needs work.

[PhungVanHoa]

Can you give me some suggestions. i will create a pull request when it fixed

[devemux86]

You need to study the OpenMapTiles schema (as they change the OpenStreetMap tags),
the render theme documentation and the OpenMapTiles theme and test the results.

[PhungVanHoa]

Thank you.
Last question. Editing themes can make the dashed line close properly ?

[devemux86]

Editing themes can make the dashed line close properly ?

We cannot know from an image (could be OpenGL artifact).

You need to check the map element and the theme rules at that area,
see if another map element or theme rule overlaps / hides it, etc.

Writing render themes requires a lot of testing.