At present, pie chart is ok.There are two classes for pie chart, one is WSPieChartView, another one is WSPieChartWithMotionView.

The difference between WSPieChartView and WSPieChartWithMotion are below:

• Drawing the pie sector on the UIView in WSPieChartView. But in the WSPieChartWithMotionView is CALayer. Extracted drawn content to different part.
• Adding open and close animation on WSPieChartWithMotionView.So when you press the pie, you can find it open smoothly. But WSPieChartView doesn’t have this function.
• Adding transformation on the pie when update the datas. This is only support on WSPieChartWithMotionView.
• Removing the indicator from WSPieChartWithMotionView. Maybe I will add it later.

Key points when you use WSPieChartWithMotion:

• Carefully using the shadow. Because it will create shadow on both view and layers.Detail information you can find on the comments of class.
• Switching data. The datas must have same titles. But they can be different order.
  The codes are just tested on simulator, not on device.