Piechart expanded slice adjustable ratio (touchAdditional)

[tudormarze]

Hi,

I've seen that the value for the expanded slice ratio is coded inside PieChartRenderer as the constant DEFAULT_TOUCH_ADDITIONAL_DP = 8. I think it would be great if this can be changed or modified. Probably if .setInteractive(false) is also called, then touchAdditional should be 0.

Cheers,
Tudor