title: Raycaster: Line Precision Becomes Very Low when Having More Points
body: <p>I'm using <code>THREE.Raycaster</code> to do <code>THREE.Line</code> picking. When my <code>THREE.Line</code> contains more points, the precision becomes very low. Changing the <code>THREE.Raycaster.linePrecision</code> doesn't work.</p>
  
  <p>Is that caused by the super big bounding sphere? But in this <a href="https://threejs.org/examples/?q=interact#webgl_interactive_lines" rel="nofollow noreferrer">official example</a>, the lines contain 50 points and work well.</p>
  
  <p>So what's the problem?</p>