/** Convert gradient sky to color sky. */
protected void setupSky() {
// Change atmosphere SkyGradientLayer for SkyColorLayer
LayerList layers = getWWD().getModel().getLayers();
for (int i = 0; i < layers.size(); i++) {
if (layers.get(i) instanceof SkyGradientLayer) layers.set(i, new SkyColorLayer());
}
}
