title: Drawing a circular, minor arc given the centre point and two other points
body: <p>Does anyone know how to draw a circular, minor arc given the centre point and two other points that lie on the circle?</p>
  
  <p>I want to draw the pixels directly to the screen, and preferably, not have to calculate the angles.</p>
  
  <p>I am using SDL and C, but may be OK studying code given that uses a different language.</p>
  
  <p>Thanks.</p>