My hillshading mistake

[moiatto]

I have tried to implement the hillshading feature following the example HillshadingActivity.java but I don't see nothing.

I can't figure out where I'm going wrong.

I downloaded the hgt.zip files and unzipped them into an internal folder of the app:

File folderDefault = getFilesDir();
File folderHillShading = new File(folderDefault.getAbsolutePath() + "/hillshading");

This is the code:

.... 

// Load map files from default folder
MultiMapFileTileSource tileSources = loadMapFiles();

// Vector layerar
VectorTileLayer tileLayer = map.setBaseMap(tileSources);

// HillShading layer
DemFolder demFolder = new DemFolderAndroidContent(DocumentFile.fromFile(folderHillShading).getUri(), context, context.getContentResolver());
final AdaptiveClasyHillShading algorithm = new AdaptiveClasyHillShading()
        // You can make additional behavior adjustments
        .setAdaptiveZoomEnabled(true)
        // .setZoomMinOverride(0)
        // .setZoomMaxOverride(17)
        .setCustomQualityScale(1);
HillshadingTileSource hillshadingTileSource = new HillshadingTileSource(Viewport.MIN_ZOOM_LEVEL, Viewport.MAX_ZOOM_LEVEL, demFolder, algorithm, 128, Color.BLACK, AndroidGraphicFactory.INSTANCE);
ITileCache tileCache = new TileCache(context, Objects.requireNonNull(context.getExternalCacheDir()).getAbsolutePath(), "hillshading");
hillshadingTileSource.setCache(tileCache);
map.layers().add(new BitmapTileLayer(map, hillshadingTileSource, 150));
map.clearMap();

// Building layer
map.layers().add(new BuildingLayer(map, tileLayer));

// Label layer
map.layers().add(new LabelLayer(map, tileLayer));

//------------ MapEventsReceiver implementation to handle Gestures on Map
MapEventsReceiver mapEventsReceiver = new MapEventsReceiver(map);
map.layers().add(mapEventsReceiver);
map.clearMap();

// Scale bar
mapScaleBar = new DefaultMapScaleBar(map, 3.8f);
mapScaleBar.setScaleBarMode(DefaultMapScaleBar.ScaleBarMode.SINGLE);
MapScaleBarLayer mapScaleBarLayer = new MapScaleBarLayer(map, mapScaleBar);
mapScaleBarLayer.getRenderer().setPosition(GLViewport.Position.BOTTOM_RIGHT);
mapScaleBarLayer.getRenderer().setOffset(0 * CanvasAdapter.getScale(), 0 * CanvasAdapter.getScale());
map.layers().add(mapScaleBarLayer);
map.clearMap();
.....

These are the layers I see at runtime:

Layer 0: org.oscim.layers.MapEventLayer@47b699b
Layer 1: org.oscim.layers.tile.vector.OsmTileLayer@b9b6138
Layer 2: org.oscim.layers.tile.bitmap.BitmapTileLayer@217a511
Layer 3: org.oscim.layers.tile.buildings.BuildingLayer@482a676
Layer 4: org.oscim.layers.tile.vector.labeling.LabelLayer@f9d0477
Layer 5: com.myapp.fragment.MapFragment$MapEventsReceiver@84158e4
Layer 6: org.oscim.scalebar.MapScaleBarLayer@140814d

What checks can I do to understand where the error is?

[devemux86]

@moiatto

Follow exactly the sample code, the order of added layers, etc.

Use the correct DemFolder: if using files or stream, zip or not.