protected async override void OnAppearing()
{
base.OnAppearing();
// load our background image
var imageUrl = viewModel.Location.PanoramaImage;
var originalBitmap = await BitmapHelper.LoadBitmapFromUrl(imageUrl);
// resize the image for the screen
var imageScale = Panorama.CanvasSize.Height / originalBitmap.Height;
SKSizeI newImageSize = new SKSizeI((int)(originalBitmap.Width * imageScale),
(int)(originalBitmap.Height * imageScale));
backgroundBitmap = originalBitmap.Resize(newImageSize, SKFilterQuality.High);
foreach (var fish in viewModel.Location.Fish)
{
FishAnnotation annotation = await CreateAnnotations(fish);
fishAnnotations.Add(fish, annotation);
}
Panorama.InvalidateSurface();
}
private async Task <FishAnnotation> CreateAnnotations(FishModel fish)
{
var annotation = new FishAnnotation();
// create an image for the fish
await annotation.CreateAnnotations(fish);
return(annotation);
}
