title: OpenGL ES 2.0 drawing a circle of ticks/lines
body: <p>What would be the best way to draw a circle of tick marks in OpenGL ES 2.0? such as you see in a speedometer.</p>
  
  <p>I tried recalculating the cos and sin to get x and y for every vertex of every point, but it causes some wild flickering of the tick marks.</p>
  
  <p>I tried a computationally cheaper way which only calculates the cos factor and tan factor once and uses multiplication and addition to build a circle, but it seems to be too inaccurate for a speedometer.</p>
  
  <p>Any ideas?</p>