void Start(Canvas panel)
{
Random random = new Random();
Task.Factory.StartNew(new Action(() =>
{
for (int j = 0; j < 25; j++)
{
Thread.Sleep(j * 100);
Dispatcher.Invoke(new Action(() =>
{
int snowCount = random.Next(0, 10);
for (int i = 0; i < snowCount; i++)
{
int width = random.Next(10, 40);
Petal pack = new Petal();
pack.Width = width;
pack.Height = width;
pack.RenderTransform = new RotateTransform();
int left = random.Next(0, (int)panel.ActualWidth);
Canvas.SetLeft(pack, left);
panel.Children.Add(pack);
int seconds = random.Next(20, 30);
pack.BeginAnimation(OpacityProperty, new DoubleAnimation(0, 1, TimeSpan.FromSeconds(1)));
DoubleAnimationUsingPath doubleAnimation = new DoubleAnimationUsingPath() //下降动画
{
Duration = new Duration(new TimeSpan(0, 0, seconds)),
RepeatBehavior = RepeatBehavior.Forever,
PathGeometry = new PathGeometry(new List <PathFigure>()
{
new PathFigure(new Point(left, 0), new List <PathSegment>()
{
new LineSegment(new Point(left, panel.ActualHeight), false)
}, false)
}),
Source = PathAnimationSource.Y
};
pack.BeginAnimation(Canvas.TopProperty, doubleAnimation);
DoubleAnimation doubleAnimation1 = new DoubleAnimation(360, new Duration(new TimeSpan(0, 0, 10))) //旋转动画
{
RepeatBehavior = RepeatBehavior.Forever,
};
pack.RenderTransform.BeginAnimation(RotateTransform.AngleProperty, doubleAnimation1);
}
}));
}
}));
}
void Start(Canvas panel)
{
// SerializSettingClass(setting);
panel.Children.Clear();
Random random = new Random();
task = Task.Factory.StartNew(new Action(() =>
{
for (int j = 0; j < 50; j++)
{
Thread.Sleep(j * 200);
//Dispatcher.BeginInvoke(new Action(() =>
//{
int snowCount = random.Next(2, setting.SnowflakeCount);//Count
for (int i = 0; i < snowCount; i++)
{
Dispatcher.BeginInvoke(new Action(() =>
{
int width = random.Next(5, setting.SnowflakeSize); //size
if (setting.SnowflakeType == 1)
{
Petal pack = new Petal();
userControl = pack;
}
else if (setting.SnowflakeType == 2)
{
BGCFu bGCFu = new BGCFu();
userControl = bGCFu;
}
else if (setting.SnowflakeType == 3)
{
BGCSnow bGCSnow = new BGCSnow();
userControl = bGCSnow;
}
else if (setting.SnowflakeType == 4)
{
BGCStarxaml bGCStarxaml = new BGCStarxaml();
userControl = bGCStarxaml;
}
else
{
BGCSnow bGCFu = new BGCSnow();
userControl = bGCFu;
}
userControl.Width = width;
userControl.Height = width;
userControl.RenderTransform = new RotateTransform();
int left = random.Next(0, (int)panel.ActualWidth);
Canvas.SetLeft(userControl, left);
panel.Children.Add(userControl);
int seconds = random.Next(20, 30);
userControl.BeginAnimation(OpacityProperty, new DoubleAnimation(0, 1, TimeSpan.FromSeconds(1)));
DoubleAnimationUsingPath doubleAnimation = new DoubleAnimationUsingPath() //下降动画
{
Duration = new Duration(new TimeSpan(0, 0, seconds)),
RepeatBehavior = RepeatBehavior.Forever,
PathGeometry = new PathGeometry(new List <PathFigure>()
{
new PathFigure(new Point(left, 0), new List <PathSegment>()
{
new LineSegment(new Point(left, panel.ActualHeight), false)
}, false)
}),
Source = PathAnimationSource.Y
};
userControl.BeginAnimation(Canvas.TopProperty, doubleAnimation);
DoubleAnimation doubleAnimation1 = new DoubleAnimation(360, new Duration(new TimeSpan(0, 0, 12))) //旋转动画
{
RepeatBehavior = RepeatBehavior.Forever,
};
userControl.RenderTransform.BeginAnimation(RotateTransform.AngleProperty, doubleAnimation1);
}));
}
}
}));
}