title: Draw a siemens star in opencv and c++
body: <p>I'm new in opencv. I should implement a siemens star (<a href="http://upload.wikimedia.org/wikipedia/commons/5/50/Siemens_star.svg" rel="nofollow">http://upload.wikimedia.org/wikipedia/commons/5/50/Siemens_star.svg</a>) in c++ and opencv. After days of searching the internet I'm very frustrated and I hope you can help me. I don't know how to start. My first idea to realize it, is to draw filled triangles from center and crop them with a circle. But I think there are no functions in opencv to draw a triangle. My 2nd approach is to plot all points between two vectors, but my mathematical knowledge is very poor (like my english, sorry ;)). 
  Pleaseeee help me..</p>
  
  <p>Thanks!</p>