static unsafe void Demo7(RGBLedMatrix matrix) { play = true; try { matrix.Fill(0, 0, 0); while (play) { matrix.SetPixel(matrix.Width / 2, matrix.Height / 2, 255, 0, 0); matrix.DrawCircle(matrix.Width / 2, matrix.Height / 2, 14, 255, 0, 0); matrix.DrawCircle(matrix.Width / 2, matrix.Height / 2, 9, 0, 255, 0); matrix.DrawCircle(matrix.Width / 2, matrix.Height / 2, 6, 0, 0, 255); } } catch (Exception e) { Console.WriteLine(e); } }