public void setCenter(Vector3f center) {
        this.center = center;
        if (material != null) {
            material.setVector3("Center", center);
        }
    }
Set the center of the effect.
By default, the water will extend across the entire scene.
By setting a center and a radius you can restrain it to a portion of the scene.
@param center the center of the effect
jme3-effects/src/main/java/com/jme3/water/WaterFilter.java