hallolo:
because lots of processing power would be wasted by repeadetly checking if this bool is true inside the render() function.
You could check the variable for each 12 (or 12*12) LED's you render and save some compute power 
hallolo:
because lots of processing power would be wasted by repeadetly checking if this bool is true inside the render() function.
You could check the variable for each 12 (or 12*12) LED's you render and save some compute power