public void setMaxAmplitude(float maxAmplitude) {
        this.maxAmplitude = maxAmplitude;
        if (material != null) {
            material.setFloat("MaxAmplitude", maxAmplitude);
        }
    }
Sets the maximum waves amplitude
default is 1.5

@param maxAmplitude the desired maximum amplitude (default=1.5)
jme3-effects/src/main/java/com/jme3/water/WaterFilter.java