/// <summary>
/// Draw square boxes around each area to approximate how they would behave in an offline app
/// </summary>
/// <param name="info">the image information for drawing</param>
/// <param name="items">the elements to draw.</param>
/// <returns>byte array of the generated .png tile image</returns>
public byte[] DrawOfflineEstimatedAreas(ImageStats info, List <DbTables.Place> items)
{
SKBitmap bitmap = new SKBitmap(info.imageSizeX, info.imageSizeY, SKColorType.Rgba8888, SKAlphaType.Premul);
SKCanvas canvas = new SKCanvas(bitmap);
var bgColor = SKColors.Transparent;
canvas.Clear(bgColor);
canvas.Scale(1, -1, info.imageSizeX / 2, info.imageSizeY / 2);
SKPaint fillpaint = new SKPaint();
fillpaint.IsAntialias = true;
fillpaint.Style = SKPaintStyle.Fill;
var strokePaint = new SKPaint();
strokePaint.Color = SKColors.Black;
strokePaint.TextSize = 32;
strokePaint.StrokeWidth = 3;
strokePaint.Style = SKPaintStyle.Stroke;
strokePaint.TextAlign = SKTextAlign.Center;
//TagParser.ApplyTags(items);
var placeInfo = PraxisCore.Standalone.Standalone.GetPlaceInfo(items.Where(i =>
i.IsGameElement
).ToList());
//this is for rectangles.
foreach (var pi in placeInfo)
{
var rect = PlaceInfoToRect(pi, info);
fillpaint.Color = SKColor.Parse(TagParser.PickStaticColorForArea(pi.Name));
canvas.DrawRect(rect, fillpaint);
canvas.DrawRect(rect, strokePaint);
}
canvas.Scale(1, -1, info.imageSizeX / 2, info.imageSizeY / 2); //inverts the inverted image again!
foreach (var pi in placeInfo)
{
var rect = PlaceInfoToRect(pi, info);
canvas.DrawText(pi.Name, rect.MidX, info.imageSizeY - rect.MidY, strokePaint);
}
var ms = new MemoryStream();
var skms = new SKManagedWStream(ms);
bitmap.Encode(skms, SKEncodedImageFormat.Png, 100);
var results = ms.ToArray();
skms.Dispose(); ms.Close(); ms.Dispose();
return(results);
}
/// <summary>
/// Draw square boxes around each area to approximate how they would behave in an offline app
/// </summary>
/// <param name="info">the image information for drawing</param>
/// <param name="items">the elements to draw.</param>
/// <returns>byte array of the generated .png tile image</returns>
public byte[] DrawOfflineEstimatedAreas(ImageStats info, List <DbTables.Place> items)
{
//TODO retest this.
var image = new Image <Rgba32>(info.imageSizeX, info.imageSizeY);
var bgColor = Rgba32.ParseHex("00000000");
image.Mutate(x => x.Fill(bgColor));
var fillColor = Rgba32.ParseHex("000000");
var strokeColor = Rgba32.ParseHex("000000");
var placeInfo = Standalone.Standalone.GetPlaceInfo(items.Where(i =>
i.IsGameElement
).ToList());
//this is for rectangles.
foreach (var pi in placeInfo)
{
var rect = PlaceInfoToRect(pi, info);
fillColor = Rgba32.ParseHex(TagParser.PickStaticColorForArea(pi.Name));
image.Mutate(x => x.Fill(fillColor, rect));
image.Mutate(x => x.Draw(strokeColor, 3, rect));
}
image.Mutate(x => x.Flip(FlipMode.Vertical));; //inverts the inverted image again!
foreach (var pi in placeInfo)
{
//NOTE: would be better to load fonts once and share that for the app's lifetime.
var fonts = new SixLabors.Fonts.FontCollection();
var family = fonts.Add("fontHere.ttf");
var font = family.CreateFont(12, FontStyle.Regular);
var rect = PlaceInfoToRect(pi, info);
image.Mutate(x => x.DrawText(pi.Name, font, strokeColor, new PointF((float)(pi.lonCenter * info.pixelsPerDegreeX), (float)(pi.latCenter * info.pixelsPerDegreeY))));
}
image.Mutate(x => x.Flip(FlipMode.Vertical)); //Plus codes are south-to-north, so invert the image to make it correct.
var ms = new MemoryStream();
image.SaveAsPng(ms);
return(ms.ToArray());
}