title: ThreeJS Highlight/Projector
body: <p>How would I go about adding a 2d sprite under a 3d object on top of a plane to show that my object(s) are highlighted/selected?</p>
  <p>Also, how would I do this on uneven terrain?</p>
  <p>I'm attaching a sample image to better explain my question:</p>
  <p><a href="https://i.stack.imgur.com/loP6c.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/loP6c.jpg" alt="enter image description here" /></a></p>