@Override
    public String toString() {
        return getClass().getSimpleName() + "[name=" + name + ", direction=" + direction + ", color=" + color + ", enabled=" + enabled + "]";
    }
Sets the direction of the light.
<p>
Represents the direction the light is shining.
(1, 0, 0) would represent light shining in the +X direction.

@param dir the direction of the light.
jme3-core/src/main/java/com/jme3/light/DirectionalLight.java