public Vector3f localToWorld(final Vector3f in, Vector3f store) {
        checkDoTransformUpdate();
        return worldTransform.transformVector(in, store);
    }
Convert a vector (in) from this spatial's local coordinate space to world
coordinate space.

@param in
           vector to read from
@param store
           where to write the result (null to create a new vector, may be
           same as in)
@return the result (store)
jme3-core/src/main/java/com/jme3/scene/Spatial.java