title: Java 3D geometry library
body: <p>Is there a computational 3D geometry <strong>(only computation, not rendering)</strong> library written in Java? 
  I need it for operations like:</p>
  
  <ul>
  <li>finding primitives intersection, such as planes, cubes etc.</li>
  <li>create "meshes" from triangles, and set properties to mesh elements(vertices, edges, triangles)</li>
  <li>and other geomtrical operations - finding objects by distance, creating mesh from line etc.</li>
  </ul>