docs: public final float[] getPickRay()
      {
          synchronized (this)
          {
              mPickRay[0] = mRayOrigin.x;
              mPickRay[1] = mRayOrigin.y;
              mPickRay[2] = mRayOrigin.z;
              mPickRay[3] = mRayDirection.x;
              mPickRay[4] = mRayDirection.y;
              mPickRay[5] = mRayDirection.z;
          }
          return mPickRay;
      }