/// <summary>
/// Draw the rectangle of the given celebrity.
/// </summary>
/// <param name="celebrity">The celebrity to draw the rectangle for.</param>
private void DrawFaceRectangle(Celebrity celebrity)
{
// calculate scaling factor - ONLY WORKS FOR LANDSCAPE IMAGES
var scaleX = MainCanvas.ActualWidth / image.PixelWidth;
var scaleY = MainCanvas.ActualHeight / image.PixelHeight;
// create face rectangle
var rectangle = new System.Windows.Shapes.Rectangle
{
Stroke = new SolidColorBrush(System.Windows.Media.Color.FromRgb(255, 255, 0)),
Fill = new SolidColorBrush(System.Windows.Media.Color.FromArgb(0, 255, 255, 255)),
StrokeThickness = 2,
Width = celebrity.FaceRectangle.Width * scaleX,
Height = celebrity.FaceRectangle.Height * scaleY,
Tag = celebrity.Name
};
Canvas.SetLeft(rectangle, celebrity.FaceRectangle.Left * scaleX);
Canvas.SetTop(rectangle, celebrity.FaceRectangle.Top * scaleY);
// add handlers
rectangle.MouseEnter += (sender, e) => {
((System.Windows.Shapes.Rectangle)sender).Stroke = new SolidColorBrush(System.Windows.Media.Color.FromRgb(255, 0, 0));
};
rectangle.MouseLeave += (sender, e) => {
((System.Windows.Shapes.Rectangle)sender).Stroke = new SolidColorBrush(System.Windows.Media.Color.FromRgb(255, 255, 0));
};
rectangle.MouseLeftButtonDown += Rectangle_MouseLeftButtonDown;
MainCanvas.Children.Add(rectangle);
// ******************
// ADD YOUR CODE HERE
// ******************
}
/// <summary>
/// Perform an entity search on the celebrity and return the description.
/// </summary>
/// <param name="celebrity">The celebrity to search for.</param>
/// <returns>The description of the celebrity.</returns>
private async Task <Thing> EntitySearch(Celebrity celebrity)
{
var client = new EntitySearchAPI(new ApiKeyServiceClientCredentials(ENTITY_KEY));
var data = await client.Entities.SearchAsync(query : celebrity.Name);
if (data?.Entities?.Value?.Count > 0)
{
return((from v in data.Entities.Value
where v.EntityPresentationInfo.EntityScenario == EntityScenario.DominantEntity
select v).FirstOrDefault());
}
else
{
return(null);
}
}