Simple knob for controlling parameters in music apps or similar.
Style the outlook of your knob in KnobView.
Knob rotates if you pan vertically - I found this the most easy and practical.
Knob value go from 0 to 1 standardly. You can change this range via the multiplicator property. If you set roundToInt to YES only rounded vales (int) get computed.
You can change the knob colors via color properties in knobView.