title: Migrating GeometryUtils.merge() to geometry.merge()
body: <p>Migrating from r66 to r67 I get the message:</p>
  
  <blockquote>
    <p>DEPRECATED: GeometryUtils's .merge() has been moved to Geometry. Use geometry.merge( geometry2, matrix, materialIndexOffset ) instead.</p>
  </blockquote>
  
  <p>It doesn't seem to be a direct conversion as the old code looks like this:</p>
  
  <blockquote>
    <p>THREE.GeometryUtils.merge(cgeo, cloudgeometry);</p>
  </blockquote>
  
  <p>I have tried the following:</p>
  
  <blockquote>
    <p>cgeo.merge(cloudgeometry.geometry,cgeo.matrixWorld);</p>
  </blockquote>
  
  <p>Edit, have also tried the following which produces the same result as above:</p>
  
  <blockquote>
    <p>cgeo.merge(cloudgeometry.geometry);</p>
  </blockquote>
  
  <p>The results are a mesh which is compressed in area as if it is completely ignoring the positioning of the sub meshes which are being added to the new mesh I created, so rather than a large nice looking cloud I get a small white blog.</p>
  
  <p>There is no documentation for this latest change so I am trying to understand how it works blind, if it was a simple 1 for 1 migration it would have been nice as it would have worked but it appears the way it works completely changed.</p>