title: OpenSCAD beginner: help on making a curved object
body: <p>I am teaching myself how to use openSCAD and I know the basics.  I decided to make a palm tree to practice using the software.  I used the following code to make the trunk:</p>
  <pre><code>linear_extrude(height = 50, center = true, convexity = 10, twist = 200)
  circle(r = 1);
  </code></pre>
  <p>Which resulted in the following object:
  <img src="https://i.stack.imgur.com/aAY6R.png" alt="enter image description here" />
  Next for the top of the palm tree I wanted to create a 2D polygon, then rotate it 360 degrees.  The polygon would look something like this:
  <img src="https://i.stack.imgur.com/a2J7N.png" alt="enter image description here" /></p>
  <p>The polygon requires a series of points and this would be really hard since there is curved edges.  Is there an easier way to make the palm tree leaves?</p>