/// <summary>
/// The WheelStopped method is called when the wheel stops spinning.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void WheelStopped(object sender, EventArgs e)
{
OnWheelSpinning?.Invoke(false); // Publish the status of the wheel - the wheel is no longer spinning.
}
/// <summary>
/// The SpinWheel method is called to spin the wheel.
/// </summary>
public void SpinWheel()
{
try
{
if (_wheelStoryBoard == null)
{
// Initialize the story board.
_wheelStoryBoard = new Storyboard();
_wheelStoryBoard.Completed += new EventHandler(WheelStopped);
}
else if (_wheelStoryBoard.GetCurrentState(_wheelControl) == ClockState.Stopped || _wheelStoryBoard.GetIsPaused(_wheelControl))
{
return; // Wheel is already spinning or is paused - do not spin.
}
// Wheel spinning animation 1.
if (_wheelSpinningAnimation1 == null)
{
// Initialize the animation.
_wheelSpinningAnimation1 = new DoubleAnimation();
_wheelSpinningAnimation1.SpeedRatio = Constants.WheelSpeedRatio;
_wheelSpinningAnimation1.FillBehavior = FillBehavior.HoldEnd;
Storyboard.SetTargetName(_wheelSpinningAnimation1, Constants.WheelRotateTransformName);
Storyboard.SetTargetProperty(_wheelSpinningAnimation1, new PropertyPath(RotateTransform.AngleProperty));
_wheelStoryBoard.Children.Add(_wheelSpinningAnimation1); // Add the animation to the story board.
}
// Number of rotations in total degrees - multiply by wheel speed ratio (negative degrees for counter clockwise).
double wheelEndAngleDegrees = -1 * _randomNumberGenerator.Next(Constants.MinimumWheelSpinDistanceDegrees, Constants.MaximumWheelSpinDistanceDegrees);
_wheelSpinningAnimation1.By = wheelEndAngleDegrees * Constants.WheelSpeedRatio;
// Duration of spin seconds - multiply by wheel speed ratio.
double spinDurationSeconds = Constants.WheelSpinDurationSeconds;
_wheelSpinningAnimation1.Duration = TimeSpan.FromSeconds(spinDurationSeconds * Constants.WheelSpeedRatio);
_wheelSpinningAnimation1EndTime = DateTime.Now.AddSeconds(spinDurationSeconds);
// Wheel spinning animation 2.
if (_wheelSpinningAnimation2 == null)
{
// Initialize the animation.
_wheelSpinningAnimation2 = new DoubleAnimation();
_wheelSpinningAnimation2.SpeedRatio = Constants.WheelSpeedRatio;
_wheelSpinningAnimation2.DecelerationRatio = Constants.StoppingDecelerationRatio;
_wheelSpinningAnimation2.FillBehavior = FillBehavior.HoldEnd;
_wheelSpinningAnimation2.By = -1 * Constants.StoppingSpinDistanceDegrees;
_wheelSpinningAnimation2.Duration = TimeSpan.FromSeconds(spinDurationSeconds * Constants.WheelSpeedRatio);
Storyboard.SetTargetName(_wheelSpinningAnimation2, Constants.WheelRotateTransformName);
Storyboard.SetTargetProperty(_wheelSpinningAnimation2, new PropertyPath(RotateTransform.AngleProperty));
_wheelStoryBoard.Children.Add(_wheelSpinningAnimation2); // Add the animation to the story board.
}
// Begin time - begins after the first wheel spinning animation.
_wheelSpinningAnimation2.BeginTime = TimeSpan.FromSeconds(spinDurationSeconds);
// Select a winning number, and retrieve the corresponding winning pocket.
int number = _randomNumberGenerator.Next(Constants.MinimumWinningNumber, Constants.MaximumWinningNumber);
_winningNumber = Pockets.SingleOrDefault(x => x.Number == number);
double winningNumberStartAngleDegrees = _winningNumber.AngularPositionDegrees + ((RotateTransform)_wheelControl.RenderTransform).Angle;
_winningNumberEndAngleDegrees = CorrectAngleDegrees(winningNumberStartAngleDegrees + (double)_wheelSpinningAnimation1.By);
_wheelStoryBoard.Begin(_wheelControl, true); // Start the story board.
OnWheelSpinning?.Invoke(true); // Publish the status of the wheel.
}
catch (Exception ex)
{
throw new Exception("RouletteWheel.SpinWheel(): " + ex.ToString());
}
}
