| 48 | } |
| 49 | |
| 50 | void rainbow(uint8_t n, uint8_t& r, uint8_t& g, uint8_t& b) |
| 51 | { |
| 52 | if (n < 255 / 3) { |
| 53 | r = n * 3; |
| 54 | g = 255 - n * 3; |
| 55 | b = 0; |
| 56 | } else if (n < 255 / 3 * 2) { |
| 57 | n -= 255 / 3; |
| 58 | r = 255 - n * 3; |
| 59 | g = 0; |
| 60 | b = n * 3; |
| 61 | } else { |
| 62 | n -= 255 / 3 * 2; |
| 63 | r = 0; |
| 64 | g = n * 3; |
| 65 | b = 255 - n * 3; |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | void fill(uint8_t r, uint8_t g, uint8_t b) |
| 70 | { |