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Spin() function added #2

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Spin() function added #2

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03edf3d
Spin() function added
ersuman Jun 13, 2017
63cc674
Update RotaryWheel.xaml.cs
ersuman Aug 29, 2017
aea5a98
Update RotaryWheel.xaml.cs
ersuman Aug 29, 2017
50c8b07
Update RotaryWheel.xaml.cs
ersuman Aug 29, 2017
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61 changes: 58 additions & 3 deletions RotaryWheelControl/RotaryWheel.xaml.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -21,11 +21,14 @@ public partial class RotaryWheel : UserControl, INotifyPropertyChanged

public event PropertyChangedEventHandler PropertyChanged;


private Color _backgroundColor = Colors.Black;
public Color BackgroundColor
{
get { return _backgroundColor; }
set { SetField(ref _backgroundColor, value); }
set { SetField(ref _backgroundColor, value);
Draw();
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@jpoon jpoon Jul 6, 2017 •
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Is it necessary to add the Draw()? Setting a new color should automatically be handled as this class inherits from INotifyPropertyChanged...

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@ersuman ersuman Jul 7, 2017

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Yes, i've experienced that without Draw() function call, BackgroundColor doesnot changes instantly

}
}

private Color _foregroundColor = Colors.White;
Expand Down Expand Up @@ -80,7 +83,8 @@ public bool HideLabels
}
}
}



public string SelectedItemValue
{
get { return _selectedItem?.Label; }
Expand Down Expand Up @@ -142,7 +146,58 @@ public RotaryWheel()
}
};
}
/// <summary>
/// Spins the wheel randomly.
/// </summary>
/// <param name="maxSpins">Maximum no. of spins or revolutions.</param>
/// <param name="durationInSec">Spin duration in Second. [-1 denotes random duration]</param>
public void Spin(int maxSpins=5, int durationInSec = -1)
{
Random r = new Random();
int steps = r.Next(_pieSlices.Count, _pieSlices.Count* maxSpins);
SpinTo(steps,durationInSec);
}
private void SpinTo(int itemIndex, int durationInSec = -1)
{
Random r = new Random();
var angleFromYAxis = 360 - Angle;
SelectedItem = _pieSlices
.SingleOrDefault(p => p.StartAngle <= angleFromYAxis && (p.StartAngle + p.Angle) > angleFromYAxis);

int count = _pieSlices.Count;
int currIndex = _pieSlices.IndexOf(SelectedItem);
int fullSpin = itemIndex / count;
int steps = currIndex- (itemIndex % count);
if (steps < 0)
{
steps = count + steps;
}

var startAngle = SelectedItem.StartAngle + SelectedItem.Angle / 2;
var finalAngle = startAngle + fullSpin*360 + steps*360/count;

doubleAnimation.From = startAngle;
doubleAnimation.To = finalAngle;
if(durationInSec>0)
{
doubleAnimation.Duration = new Windows.UI.Xaml.Duration(new TimeSpan(0, 0, durationInSec));
}
else
{
doubleAnimation.Duration = new Windows.UI.Xaml.Duration(new TimeSpan(0, 0, r.Next(3, 6)));
}
storyBoard.Begin();
storyBoard.Completed += StoryBoard_Completed;
Angle = ((int)finalAngle) % 360;

}

private void StoryBoard_Completed(object sender, object e)
{
var angleFromYAxis = 360 - Angle;
SelectedItem = _pieSlices
.SingleOrDefault(p => p.StartAngle <= angleFromYAxis && (p.StartAngle + p.Angle) > angleFromYAxis);
}
private void Draw()
{
_pieSlices.Clear();
Expand Down Expand Up @@ -210,4 +265,4 @@ private void SetField<T>(ref T field, T value, [CallerMemberName] string propert
}
}
}
}
}