Use dot notation more consistently.
Using “tgmath.h” for automatic 64-bit math.
Pulling out color objects.
Converting #define into const CGFloat.
Project upgraded by Xcode 6.1.
Using dot notation throughout DRPieChartProgressView.
Rewriting DRPieChartProgressView using CG functions.
Modernizing.
Adding deactivated code for flipping.
Animating strokeEnd instead of strokeStart.
That way, it just makes more sense to me.
Pulling rootLayer out.
Removing dead code.