public TestMapOverlay()
{
this.strokeWidthArea = SKMapCanvas.PixelsToMaximumMapSizeAtScale(new Size(50, 50), SKMapCanvas.MaxZoomScale);
baseBounds = new MapSpan(new Position(37, -122), 1, 1);
GpsBounds = new MapSpan(baseBounds.Center,
baseBounds.LatitudeDegrees + strokeWidthArea.Height,
baseBounds.LongitudeDegrees + strokeWidthArea.Width);
}
private SKBitmap DrawTileToBitmap(SKMapSpan tileSpan, double zoomScale)
{
Rectangle mercatorSpan = tileSpan.ToMercator();
SKBitmap bitmap = GetOverlayBitmap();
SKMapCanvas mapCanvas = new SKMapCanvas(bitmap, mercatorSpan, zoomScale);
SharedOverlay.DrawOnMap(mapCanvas, tileSpan, zoomScale);
return(bitmap);
}
public override void DrawMapRect(MKMapRect mapRect, nfloat zoomScale, CGContext context)
{
SKMapSpan rectSpan = mapRect.ToMapSpan();
if (_SharedOverlay.IsVisible && rectSpan.FastIntersects(_SharedOverlay.GpsBounds))
{
CGRect coreDrawRect = RectForMapRect(mapRect);
SKBitmap drawBitmap = GetOverlayBitmap();
SKMapCanvas mapCanvas = new SKMapCanvas(drawBitmap, mapRect.ToRectangle(), zoomScale, true);
_SharedOverlay.DrawOnMap(mapCanvas, rectSpan, zoomScale);
Console.WriteLine($"Drawing tile for zoom scale {zoomScale} with GPS bounds {mapRect} and Mercator {mapRect.ToRectangle()}");
context.DrawImage(coreDrawRect, drawBitmap.ToCGImage());
// Let's exit this method so MapKit renders to screen while we free our resources in the background.
Task.Run(() => ReleaseOverlayBitmap(drawBitmap));
}
}
public override void DrawOnMap(SKMapCanvas canvas, SKMapSpan canvasMapRect, double zoomScale)
{
SKPaint paint = new SKPaint();
paint.IsAntialias = true;
paint.StrokeWidth = 1;
paint.Color = Color.Fuchsia.ToSKColor();
MvxLog.Instance.Log(MvxLogLevel.Trace,
() => $"Drawing line with coords \n" +
$"[{GpsBounds.Center.Longitude - GpsBounds.LongitudeDegrees - canvasMapRect.LongitudeDegrees}, " +
$"{GpsBounds.Center.Latitude - GpsBounds.LatitudeDegrees - canvasMapRect.LatitudeDegrees}; \n" +
$" {GpsBounds.Center.Longitude + GpsBounds.LongitudeDegrees}, " +
$"{GpsBounds.Center.Latitude + GpsBounds.LatitudeDegrees}]");
canvas.DrawLine(GpsBounds.Center.Latitude + GpsBounds.LatitudeDegrees - canvasMapRect.LatitudeDegrees,
GpsBounds.Center.Longitude + GpsBounds.LongitudeDegrees - canvasMapRect.LongitudeDegrees,
GpsBounds.Center.Latitude + GpsBounds.LatitudeDegrees,
GpsBounds.Center.Longitude + GpsBounds.LongitudeDegrees,
paint);
}
public override void DrawOnMap(SKMapCanvas canvas, SKMapSpan canvasMapRect, double zoomScale)
{
SKPaint paint = new SKPaint();
paint.IsAntialias = true;
paint.StrokeWidth = 1;
paint.Color = Color.Fuchsia.ToSKColor();
if (canvasMapRect.Center.Latitude > 0)
{
canvas.DrawLine(new Position(canvasMapRect.Center.Latitude + canvasMapRect.LatitudeDegrees, canvasMapRect.Center.Longitude),
new Position(canvasMapRect.Center.Latitude - canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude + canvasMapRect.LongitudeDegrees),
paint);
canvas.DrawLine(new Position(canvasMapRect.Center.Latitude - canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude + canvasMapRect.LongitudeDegrees),
new Position(canvasMapRect.Center.Latitude - canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude - canvasMapRect.LongitudeDegrees),
paint);
canvas.DrawLine(new Position(canvasMapRect.Center.Latitude - canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude - canvasMapRect.LongitudeDegrees),
new Position(canvasMapRect.Center.Latitude + canvasMapRect.LatitudeDegrees, canvasMapRect.Center.Longitude),
paint);
}
else
{
canvas.DrawLine(new Position(canvasMapRect.Center.Latitude - canvasMapRect.LatitudeDegrees, canvasMapRect.Center.Longitude),
new Position(canvasMapRect.Center.Latitude + canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude + canvasMapRect.LongitudeDegrees),
paint);
canvas.DrawLine(new Position(canvasMapRect.Center.Latitude + canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude + canvasMapRect.LongitudeDegrees),
new Position(canvasMapRect.Center.Latitude + canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude - canvasMapRect.LongitudeDegrees),
paint);
canvas.DrawLine(new Position(canvasMapRect.Center.Latitude + canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude - canvasMapRect.LongitudeDegrees),
new Position(canvasMapRect.Center.Latitude - canvasMapRect.LatitudeDegrees, canvasMapRect.Center.Longitude),
paint);
}
paint.Style = SKPaintStyle.Stroke;
paint.StrokeWidth = 10;
paint.StrokeCap = SKStrokeCap.Round;
paint.StrokeJoin = SKStrokeJoin.Round;
paint.Color = Color.Red.ToSKColor();
SKMapPath zonePath = canvas.CreateEmptyMapPath();
zonePath.MoveTo((float)(baseBounds.Center.Latitude - baseBounds.LatitudeDegrees), (float)baseBounds.Center.Longitude);
zonePath.LineTo((float)(baseBounds.Center.Latitude + baseBounds.LatitudeDegrees), (float)(baseBounds.Center.Longitude + baseBounds.LongitudeDegrees));
zonePath.LineTo((float)(baseBounds.Center.Latitude + baseBounds.LatitudeDegrees), (float)(baseBounds.Center.Longitude - baseBounds.LongitudeDegrees));
zonePath.Close();
canvas.DrawPath(zonePath, paint);
paint.Color = Color.Green.MultiplyAlpha(0.5).ToSKColor();
Size currentScaleStrokeArea = SKMapCanvas.PixelsToMapSizeAtScale(new Size(5, 5), baseBounds.Center, zoomScale);
MapSpan insetBounds = new MapSpan(baseBounds.Center,
baseBounds.LatitudeDegrees - currentScaleStrokeArea.Height,
baseBounds.LongitudeDegrees - currentScaleStrokeArea.Width);
canvas.DrawRect(insetBounds, paint);
paint.StrokeWidth = 1;
paint.Color = Color.Black.ToSKColor();
canvas.DrawRect(baseBounds, paint);
paint.Color = Color.Black.ToSKColor();
canvas.DrawRect(GpsBounds, paint);
IResourceLocator resLocator = Mvx.IoCProvider.Resolve <IResourceLocator>();
string resPath = resLocator.GetResourcePath(ResourceKeys.ImagesKey, "symbol_logo.svg");
SKSvg logoSvg = new SKSvg();
logoSvg.Load(resLocator.ResourcesAssembly.GetManifestResourceStream(resPath));
canvas.DrawPicture(logoSvg.Picture, baseBounds.Center, new Size(100, 100));
}
public override void DrawOnMap(SKMapCanvas canvas, SKMapSpan canvasMapRect, double zoomScale)
{
SKPaint paint = new SKPaint();
paint.IsAntialias = true;
paint.StrokeWidth = 1;
paint.Color = Color.Fuchsia.ToSKColor();
if (canvasMapRect.Center.Latitude > 0)
{
canvas.DrawLine(canvasMapRect.Center.Latitude - canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude - canvasMapRect.LongitudeDegrees,
canvasMapRect.Center.Latitude + canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude + canvasMapRect.LongitudeDegrees,
paint);
}
else
{
canvas.DrawLine(canvasMapRect.Center.Latitude + canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude - canvasMapRect.LongitudeDegrees,
canvasMapRect.Center.Latitude - canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude + canvasMapRect.LongitudeDegrees,
paint);
}
paint.StrokeWidth = 5;
paint.Color = Color.Blue.ToSKColor();
canvas.DrawLine(baseBounds.Center.Latitude + baseBounds.LatitudeDegrees,
baseBounds.Center.Longitude + baseBounds.LongitudeDegrees,
baseBounds.Center.Latitude - baseBounds.LatitudeDegrees,
baseBounds.Center.Longitude - baseBounds.LongitudeDegrees,
paint);
canvas.DrawLine(baseBounds.Center.Latitude - baseBounds.LatitudeDegrees,
baseBounds.Center.Longitude + baseBounds.LongitudeDegrees,
baseBounds.Center.Latitude + baseBounds.LatitudeDegrees,
baseBounds.Center.Longitude - baseBounds.LongitudeDegrees,
paint);
paint.Color = Color.Red.ToSKColor();
canvas.DrawLine(baseBounds.Center.Latitude + baseBounds.LatitudeDegrees,
baseBounds.Center.Longitude + baseBounds.LongitudeDegrees,
baseBounds.Center.Latitude - baseBounds.LatitudeDegrees,
baseBounds.Center.Longitude - baseBounds.LongitudeDegrees,
paint,
false);
canvas.DrawLine(baseBounds.Center.Latitude - baseBounds.LatitudeDegrees,
baseBounds.Center.Longitude + baseBounds.LongitudeDegrees,
baseBounds.Center.Latitude + baseBounds.LatitudeDegrees,
baseBounds.Center.Longitude - baseBounds.LongitudeDegrees,
paint,
false);
paint.StrokeWidth = 5;
paint.Color = Color.Orange.ToSKColor();
canvas.DrawLine(GpsBounds.Center.Latitude + GpsBounds.LatitudeDegrees,
GpsBounds.Center.Longitude - GpsBounds.LongitudeDegrees,
GpsBounds.Center.Latitude - GpsBounds.LatitudeDegrees,
GpsBounds.Center.Longitude + GpsBounds.LongitudeDegrees,
paint,
false);
canvas.DrawLine(GpsBounds.Center.Latitude + GpsBounds.LatitudeDegrees,
GpsBounds.Center.Longitude + GpsBounds.LongitudeDegrees,
GpsBounds.Center.Latitude - GpsBounds.LatitudeDegrees,
GpsBounds.Center.Longitude - GpsBounds.LongitudeDegrees,
paint,
false);
}
