Divides the image into certain number of rings. Each ring is rotated according to a rotate angle.

 
Distort the image in a circular random form.
| Framework | Member | 
|---|---|
| .NET | RingEffectCommand | 
| .NET 6+ | RingEffectCommand | 
| C DLL | L_RingEffectBitmap | 
| C++ Class Library | LBitmap::RingEffect |