private static DoubleAnimation GenerateAnimation(int x, Duration duration, SnowFlake flake, string propertyPath)
{
DoubleAnimation animation = new DoubleAnimation
{
To = x,
Duration = duration
};
Storyboard.SetTarget(animation, flake);
Storyboard.SetTargetProperty(animation, new PropertyPath(propertyPath));
return animation;
}
private static DoubleAnimation GenerateAnimation(int x, Duration duration, SnowFlake flake, string propertyPath)
{
DoubleAnimation animation = new DoubleAnimation
{
To = x,
Duration = duration
};
Storyboard.SetTarget(animation, flake);
Storyboard.SetTargetProperty(animation, new PropertyPath(propertyPath));
return(animation);
}
private void Snow()
{
var xAmount = _random.Next(-500, (int)LayoutRoot.ActualWidth - 100);
var yAmount = -100;
var s = _random.Next(5, 15) * 0.1;
var rotateAmount = _random.Next(0, 270);
RotateTransform rotateTransform = new RotateTransform(rotateAmount);
ScaleTransform scaleTransform = new ScaleTransform(s, s);
TranslateTransform translateTransform = new TranslateTransform(xAmount, yAmount);
var flake = new SnowFlake
{
RenderTransform = new TransformGroup
{
Children = new TransformCollection {
rotateTransform, scaleTransform, translateTransform
}
},
HorizontalAlignment = HorizontalAlignment.Left,
VerticalAlignment = VerticalAlignment.Top,
};
LayoutRoot.Children.Add(flake);
Duration duration = new Duration(TimeSpan.FromSeconds(_random.Next(1, 4)));
xAmount += _random.Next(100, 500);
var xAnimation = GenerateAnimation(xAmount, duration, flake, "RenderTransform.Children[2].X");
yAmount += (int)(LayoutRoot.ActualHeight + 100 + 100);
var yAnimation = GenerateAnimation(yAmount, duration, flake, "RenderTransform.Children[2].Y");
rotateAmount += _random.Next(90, 360);
var rotateAnimation = GenerateAnimation(rotateAmount, duration, flake, "RenderTransform.Children[0].Angle");
Storyboard story = new Storyboard();
story.Completed += (sender, e) => LayoutRoot.Children.Remove(flake);
story.Children.Add(xAnimation);
story.Children.Add(yAnimation);
story.Children.Add(rotateAnimation);
flake.Loaded += (sender, args) => story.Begin();
}
private void Snow()
{
var xAmount = _random.Next(-500, (int) LayoutRoot.ActualWidth - 100);
var yAmount = -100;
var s = _random.Next(5, 15) * 0.1;
var rotateAmount = _random.Next(0, 270);
RotateTransform rotateTransform = new RotateTransform(rotateAmount);
ScaleTransform scaleTransform = new ScaleTransform(s, s);
TranslateTransform translateTransform = new TranslateTransform(xAmount, yAmount);
var flake = new SnowFlake
{
RenderTransform = new TransformGroup
{
Children = new TransformCollection { rotateTransform, scaleTransform, translateTransform }
},
HorizontalAlignment = HorizontalAlignment.Left,
VerticalAlignment = VerticalAlignment.Top,
};
LayoutRoot.Children.Add(flake);
Duration duration = new Duration(TimeSpan.FromSeconds(_random.Next(1, 4)));
xAmount += _random.Next(100, 500);
var xAnimation = GenerateAnimation(xAmount, duration, flake, "RenderTransform.Children[2].X");
yAmount += (int)(LayoutRoot.ActualHeight + 100 + 100);
var yAnimation = GenerateAnimation(yAmount, duration, flake, "RenderTransform.Children[2].Y");
rotateAmount += _random.Next(90, 360);
var rotateAnimation = GenerateAnimation(rotateAmount, duration, flake, "RenderTransform.Children[0].Angle");
Storyboard story = new Storyboard();
story.Completed += (sender, e) => LayoutRoot.Children.Remove(flake);
story.Children.Add(xAnimation);
story.Children.Add(yAnimation);
story.Children.Add(rotateAnimation);
flake.Loaded += (sender, args) => story.Begin();
}
