DoubleAnimation in ScaleTransform
- by Adam S
I'm trying, as an exhibition, to use a DoubleAnimation on the ScaleX and ScaleY properties of a ScaleTransform. I have a rectangle (144x144) which I want to make rectangular over five seconds.
My XAML:
<Window x:Class="ScaleTransformTest.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300" Loaded="Window_Loaded">
<Grid>
<Rectangle Name="rect1" Width="144" Height="144" Fill="Aqua">
<Rectangle.RenderTransform>
<ScaleTransform ScaleX="1" ScaleY="1" />
</Rectangle.RenderTransform>
</Rectangle>
</Grid>
</Window>
My C#:
private void Window_Loaded(object sender, RoutedEventArgs e)
{
ScaleTransform scaly = new ScaleTransform(1, 1);
rect1.RenderTransform = scaly;
Duration mytime = new Duration(TimeSpan.FromSeconds(5));
Storyboard sb = new Storyboard();
DoubleAnimation danim1 = new DoubleAnimation(1, 1.5, mytime);
DoubleAnimation danim2 = new DoubleAnimation(1, 0.5, mytime);
sb.Children.Add(danim1);
sb.Children.Add(danim2);
Storyboard.SetTarget(danim1, scaly);
Storyboard.SetTargetProperty(danim1, new PropertyPath(ScaleTransform.ScaleXProperty));
Storyboard.SetTarget(danim2, scaly);
Storyboard.SetTargetProperty(danim2, new PropertyPath(ScaleTransform.ScaleYProperty));
sb.Begin();
}
Unfortunately, when I run this program, it does nothing. The rectangle stays at 144x144. If I do away with the animation, and just
ScaleTransform scaly = new ScaleTransform(1.5, 0.5);
rect1.RenderTransform = scaly;
it will elongate it instantly, no problem. There is a problem elsewhere. Any suggestions? I have read the discussion at http://www.eggheadcafe.com/software/aspnet/29220878/how-to-animate-tofrom-an.aspx in which someone seems to have gotten a pure-XAML version working, but the code is not shown there.
EDIT: At http://stackoverflow.com/questions/2131797/applying-animated-scaletransform-in-code-problem it seems someone had a very similar problem, I am fine with using his method that worked, but what the heck is that string thePath = "(0).(1)[0].(2)"; all about? What are those numbers representing?
