title: How to combine two Boost Geometry transformers?
body: <p>I have two transformers, a translation and a rotation as follows:</p>
  
  <pre><code>namespace bg = boost::geometry;
  namespace trans = bg::strategy::transform;
  
  trans::translate_transformer&lt;point, point&gt; translate(px, py);
  trans::rotate_transformer&lt;point, point, bg::radian&gt; rotate(rz);
  </code></pre>
  
  <p>How do I combine them into one, so that I don't have to call <code>bg::transform</code> twice each time and use an intermediate variable?</p>