public void setHeightTexture(Texture2D heightTexture) {
        this.heightTexture = heightTexture;
        heightTexture.setWrap(WrapMode.Repeat);
        if (material != null) {
            material.setTexture("HeightMap", heightTexture);
        }
    }
Sets the height texture

@param heightTexture the texture to use (alias created)
jme3-effects/src/main/java/com/jme3/water/WaterFilter.java