private void Draw(SKSurface surface, double scale)
{
var canvas = surface.Canvas;
surface.Canvas.Clear(CanvasBackgroundColor.ToSkiaColor());
_gridRenderer.Render(canvas, scale);
if (ToolCollection == null)
{
return;
}
_backgroundImageRenderer.Render(canvas, scale);
foreach (var geom in ToolCollection.Geometries)
{
GeometryRenderer.Render(canvas, geom, scale);
}
//TODO Try to do this on demand, rather than every draw...
// Snapshotting without encoding is rather fast though and does not impact performance that much
SnapShot = surface.Snapshot();
//TODO Look into this
// Not really needed, but keeps the memory slightly lower and does not impact performance that much
var mem = GC.GetTotalMemory(true);
System.Diagnostics.Debug.WriteLine($"Mem {mem}");
}
/// <summary>
/// uses the BarcodeWriterGeneric implementation and the <see cref="WriteableBitmapRenderer"/> class for decoding
/// </summary>
/// <param name="writer"></param>
/// <param name="content"></param>
/// <returns></returns>
public static Geometry WriteAsGeometry(this IBarcodeWriterGeneric writer, string content)
{
var bitmatrix = writer.Encode(content);
var renderer = new GeometryRenderer();
return(renderer.Render(bitmatrix, writer.Format, content, writer.Options));
}
private void RenderGeoJson()
{
var path = NSBundle.MainBundle.PathForResource("GeoJSON_Sample", "geojson");
var url = new NSUrl(path, isDir: false);
var parser = new GeoJSONParser(url);
parser.Parse();
var renderer = new GeometryRenderer(mapView, parser.Features);
renderer.Render();
}
private void RenderKML()
{
var path = NSBundle.MainBundle.PathForResource("KML_Sample", "kml");
var url = new NSUrl(path, isDir: false);
var parser = new KMLParser(url);
parser.Parse();
var renderer = new GeometryRenderer(mapView, parser.Placemarks, parser.Styles);
renderer.Render();
}
