7
* Draw an individual segment (column of pixels)
9
* @param segment the segment number
11
virtual void draw( int segment ) = 0;
14
* Called before the first segment is drawn, once per "frame".
16
virtual void draw_reset();
23
* @param led index of the LED (0 to 9)
24
* @param on true to turn on, false to turn off
26
void led_on( int led, bool on );