Amplitude & frequency (Wave modulation) C# Program

 private TrackBar HSlider_Amp; private TrackBar HSlider_Freq; private Label labelAmp; private Label labelFreq; private TextBox textBoxAmp; private TextBox textBoxFreq; private float amplitude = 50f; // Default amplitude private float frequency = 1f; // Default frequency in Hz public Form1() { InitializeComponent(); InitializeButton(); InitializeSlidersAndControls(); this.Width = 1300; this.Height = 700; this.Text = "Amplitude and Frequency (Wave Modulation)"; this.BackColor = Color.Black; this.CenterToScreen(); timer1 = new Timer { Enabled = false, Interval = 20 // Update every 20ms }; timer1.Tick += Timer1_Tick; this.Paint += Form1_Paint; ball = new Ball(Color.Red, 0, false); // Red ball follows a sine wave } private void InitializeButton() { buttonStart = new Button { Text = "Start", AutoSize = true, Location = new Point(1070, 60), ForeColor = Color.Red, BackColor = Color.Yellow, Font = new Font("Microsoft Sans Serif", 16, FontStyle.Bold) }; buttonStart.Click += new EventHandler(ButtonStart_Click); Controls.Add(buttonStart); buttonPause = new Button { Text = "Pause", AutoSize = true, Location = new Point(1150, 60), ForeColor = Color.Red, BackColor = Color.Yellow, Font = new Font("Microsoft Sans Serif", 16, FontStyle.Bold) }; buttonPause.Click += new EventHandler(ButtonPause_Click); Controls.Add(buttonPause); } private void ButtonPause_Click(object sender, EventArgs e) { if (isPaused) { // Resume the timer timer1.Start(); buttonPause.Text = "Pause"; // Update button text to show current state isPaused = false; } else { // Pause the timer timer1.Stop(); buttonPause.Text = "Resume"; // Update button text to show current state isPaused = true; } } private void InitializeSlidersAndControls() { int sliderWidth = (int)(this.ClientSize.Width * 0.4); // 40% of form width // Amplitude Slider HSlider_Amp = new TrackBar { Orientation = Orientation.Horizontal, Minimum = 10, Maximum = 200, Value = (int)amplitude, TickFrequency = 10, Location = new Point(190, 10), Width = 500 }; HSlider_Amp.Scroll += (s, e) => { amplitude = HSlider_Amp.Value; textBoxAmp.Text = amplitude.ToString(); }; Controls.Add(HSlider_Amp); // Frequency Slider HSlider_Freq = new TrackBar { Orientation = Orientation.Horizontal, Minimum = 0, Maximum = 1000, Value = (int)(frequency * 100), // scale frequency for slider TickFrequency = 100, Location = new Point(750, 10), Width = 500 }; HSlider_Freq.Scroll += (s, e) => { frequency = HSlider_Freq.Value; textBoxFreq.Text = frequency.ToString(); }; Controls.Add(HSlider_Freq); // Amplitude Label labelAmp = new Label { Text = "Amplitude (10 - 200 volts): ", AutoSize = true, ForeColor = Color.White, BackColor = Color.Black, Location = new Point(200, 60), Font = new Font("Microsoft Sans Serif", 13, FontStyle.Bold) }; Controls.Add(labelAmp); // Frequency Label labelFreq = new Label { Text = "Frequency (0 - 1000 Hz):", AutoSize = true, ForeColor = Color.White, BackColor = Color.Black, Location = new Point(760, 60), Font = new Font("Microsoft Sans Serif", 13, FontStyle.Bold) }; Controls.Add(labelFreq); // Amplitude TextBox textBoxAmp = new TextBox { Text = amplitude.ToString(), ForeColor = Color.White, BackColor = Color.Black, Location = new Point(455, 60), Width = 50, Font = new Font("Microsoft Sans Serif", 13, FontStyle.Bold), ReadOnly = true }; Controls.Add(textBoxAmp); // Frequency TextBox textBoxFreq = new TextBox { Text = frequency.ToString(), ForeColor = Color.White, BackColor = Color.Black, Location = new Point(1000, 60), Width = 60, Font = new Font("Microsoft Sans Serif", 13, FontStyle.Bold), ReadOnly = true }; Controls.Add(textBoxFreq); } private void Form1_Paint(object sender, PaintEventArgs e) { // Calculate the middle points int midY = this.ClientSize.Height / 2; int midX = 50; // Left margin for Y-axis // Draw X-Axis (Frequency) e.Graphics.DrawLine(Pens.White, 0, midY, this.ClientSize.Width, midY); e.Graphics.DrawString("Frequency", new Font("Microsoft Sans Serif", 12, FontStyle.Bold), Brushes.White, this.ClientSize.Width - 100, midY + 10); // Draw Y-Axis (Amplitude) e.Graphics.DrawLine(Pens.White, midX, 0, midX, this.ClientSize.Height); e.Graphics.DrawString("Amplitude", new Font("Microsoft Sans Serif", 10, FontStyle.Bold), Brushes.White, midX + 5, 10); // Draw the red ball and its trajectory if (ball.Trajectory.Count >= 2) { using (Pen trajectoryPen = new Pen(ball.Color, 2f)) { e.Graphics.DrawLines(trajectoryPen, ball.Trajectory.ToArray()); } } // Draw the ball e.Graphics.FillEllipse(new SolidBrush(ball.Color), ball.Position.X, ball.Position.Y, ballSize, ballSize); } private void Timer1_Tick(object sender, EventArgs e) { time += 0.02; // Time increment ball.UpdatePosition(time, this.ClientSize.Height / 2, ballSize, amplitude, frequency); this.Invalidate(); // Trigger repaint } private void ButtonStart_Click(object sender, EventArgs e) { ball.Reset(this.ClientSize.Height / 2 - ballSize / 2); timer1.Start(); // Start the timer } } public class Ball { public Color Color { get; } public PointF Position { get; private set; } public List<PointF> Trajectory { get; } private float phaseShift; private bool isStraight; public Ball(Color color, float phaseShift, bool isStraight) { Color = color; this.phaseShift = phaseShift; this.isStraight = isStraight; Trajectory = new List<PointF>(); } public void UpdatePosition(double time, float midY, float ballSize, float amplitude, float frequency) { float speed = 5f; Position = new PointF( Position.X + speed, midY + (float)(amplitude * Math.Sin(2 * Math.PI * frequency * time + phaseShift)) ); Trajectory.Add(new PointF(Position.X, Position.Y)); if (Position.X > 1300) { Position = new PointF(0, midY); // Reset to start position Trajectory.Clear(); // Clear the trajectory points } } public void Reset(float initialY) { Position = new PointF(0, initialY); Trajectory.Clear(); } }