title: shaperenderer rounded corner triangle
body: <p>I would like to create a triangle shape with rounded corners. I can't use a sprite since the shape will change all the time so shaperenderer seems as a good option. I currently do: </p>
  
  <pre><code>     shapeRenderer.setProjectionMatrix(camera.combined);
  
      shapeRenderer.begin(ShapeType.Filled);
      shapeRenderer.setColor(0.2f, 0f, 0f, 1f);
      // shapeRenderer.filledTriangle(50f, 50f, 55f, 55f, 60f, 60f);
      shapeRenderer.triangle(0, 0, 5f, 5f, 5f, 4f);
  
      shapeRenderer.end();
  </code></pre>
  
  <p>which produce something like: </p>
  
  <p><img src="https://i.stack.imgur.com/H01yi.png" alt="enter image description here"></p>
  
  <p>but I need something like:</p>
  
  <p><img src="https://i.stack.imgur.com/RV1QR.png" alt="enter image description here"></p>
  
  <p>Any ideas?</p>