title: how to implement hill like below image in libgdx?
body: <p>I generate a chain shape like this dynamically</p>
  
  <p><img src="https://i.stack.imgur.com/UZomy.png" alt="enter image description here"></p>
  
  <p>and my question is:
  how to draw ground like below image dynamically?</p>
  
  <p>thanks</p>
  
  <p><img src="https://i.stack.imgur.com/Cx3rK.png" alt=""></p>