title: HTML5 canvas how to split circle to X parts
body: <p>I need split circle to X parts without white center </p>
  
  <p><code>I have already this code: http://jsfiddle.net/U2tPJ/78/</code>
  <strong>I get this result:</strong></p>
  
  <p><img src="https://i.stack.imgur.com/Z4q3Q.png" alt="enter image description here"></p>
  
  <p><strong>I need finish result like this <em>(without white center)</em>:</strong></p>
  
  <p><img src="https://i.stack.imgur.com/HBZU1.png" alt="enter image description here"></p>