/** Disable and delete children display lists. */
public void disableAndDeleteChildrenDisplayLists() {
MTComponent[] childs = this.getChildren();
for (int i = 0; i < childs.length; i++) {
MTComponent child = childs[i];
if (child instanceof MTPolygon) {
MTPolygon poly = (MTPolygon) child;
poly.disableAndDeleteDisplayLists();
}
}
}
