async void zurichMbTilesHybridStyle()
{
var watch = System.Diagnostics.Stopwatch.StartNew();
// load style and font
var style = new VectorTileRenderer.Style(mainDir + @"styles/hybrid-style.json");
style.FontFallbackDirectory = mainDir + @"styles/fonts/";
// set pbf as tile provider
var vectorProvider = new VectorTileRenderer.Sources.PbfTileSource(mainDir + @"tiles/zurich.pbf.gz");
style.SetSourceProvider(0, vectorProvider);
// load raster source
var rasterProvider = new VectorTileRenderer.Sources.RasterTileSource(mainDir + @"tiles/zurich.jpg");
style.SetSourceProvider("satellite", rasterProvider);
// render it on a skia canvas
var canvas = new SkiaCanvas();
var bitmapR = await Renderer.Render(style, canvas, 0, 0, 14, 256, 256, 1);
demoImage.Source = bitmapR;
watch.Stop();
var elapsedMs = watch.ElapsedMilliseconds;
Console.WriteLine(elapsedMs + "ms time");
}
async void showPbf(string path, string stylePath, double zoom, double size = 512, double scale = 1)
{
var watch = System.Diagnostics.Stopwatch.StartNew();
// load style and font
var style = new VectorTileRenderer.Style(stylePath);
style.FontFallbackDirectory = mainDir + @"styles/fonts/";
// set pbf as tile provider
var provider = new VectorTileRenderer.Sources.PbfTileSource(path);
style.SetSourceProvider(0, provider);
// render it on a skia canvas
var canvas = new SkiaCanvas();
var bitmapR = await Renderer.Render(style, canvas, 0, 0, zoom, size, size, scale);
demoImage.Source = bitmapR;
watch.Stop();
var elapsedMs = watch.ElapsedMilliseconds;
Console.WriteLine(elapsedMs + "ms time");
}
async void showMbTiles(string path, string stylePath, int minX, int minY, int maxX, int maxY, int zoom, double size = 512, double scale = 1)
{
var watch = System.Diagnostics.Stopwatch.StartNew();
// load style and font
var style = new VectorTileRenderer.Style(stylePath);
style.FontDirectory = mainDir + @"styles/fonts/";
// set pbf as tile provider
var provider = new VectorTileRenderer.Sources.MbTilesSource(path);
style.SetSourceProvider(0, provider);
BitmapSource[,] bitmapSources = new BitmapSource[maxX - minX + 1, maxY - minY + 1];
// loop through tiles and render them
Parallel.For(minX, maxX + 1, (int x) =>
{
Parallel.For(minY, maxY + 1, async(int y) =>
{
var canvas = new SkiaCanvas();
var bitmapR = await Renderer.Render(style, canvas, x, y, zoom, size, size, scale);
if (bitmapR == null)
{
}
bitmapSources[x - minX, maxY - y] = bitmapR;
});
});
// merge the tiles and show it
var bitmap = mergeBitmaps(bitmapSources);
demoImage.Source = bitmap;
scrollViewer.Background = new SolidColorBrush(style.GetBackgroundColor(zoom));
watch.Stop();
var elapsedMs = watch.ElapsedMilliseconds;
Console.WriteLine(elapsedMs + "ms time");
}