VirtualKeyCode::PageUp => timer.t += 0.1,
VirtualKeyCode::PageDown => timer.t -= 0.2,
VirtualKeyCode::F10 => screenshot::take_screenshot(&display),
VirtualKeyCode::PageUp => timer.t += 0.1,
VirtualKeyCode::PageDown => timer.t -= 0.2,
VirtualKeyCode::F10 => screenshot::take_screenshot(&display),