func Roll() {
for i := (screenWidth + motifWidth) / 2; i > 0; i-- {
ws2811.SetBitmap(Bitmap[0][i*16 : i*16+1024])
ws2811.Render()
ws2811.Wait()
time.Sleep(50 * time.Millisecond)
ws2811.SetBitmap(Bitmap[1][i*16-8 : i*16-8+1024])
ws2811.Render()
ws2811.Wait()
time.Sleep(50 * time.Millisecond)
}
ws2811.SetBitmap(Bitmap[0][0:1024])
ws2811.Render()
ws2811.Wait()
}
func Init(brightness int) {
if initialized {
panic("Tower already initialized!")
}
initialized = true
ws2811.Init(gpioPin, Rows*Columns, brightness)
Queue = make(chan []ledmatrix.Color, queueSize)
go func() { // Phantom of the Tower
for {
req := <-Queue
ws2811.SetBitmap(req)
ws2811.Render()
ws2811.Wait()
}
}()
}