code: function onMouseMove(event, env, isSideEffectsDisabled) {
      event.preventDefault();
      mouse.move(event, env ? env.camera : null);
  
      if (!env || isSideEffectsDisabled) {
          return;
      }
  
      if(mouse.keys[1] && !mouse.keys[3]) {
          moveObject(env.library, env.camera, env.selector);
      } else {
          focusObject(env.library, env.camera, env.selector);
      }
  }
docs: Triggers object focus
  @alias module:lib3d.onMouseMove
  @param {Object} event - mouse event
  @param {Environment} env - affected environment
  @param {Boolean} isSideEffectsDisabled - disable side effects like focusing, selecting, moving objects