public void layoutUp() {
float off = offset;
if (father != null) {
father.offset = off;
father.layoutUp();
off += father.getWidthUp();
}
if (mother != null) {
mother.offset = off;
mother.layoutUp();
off += mother.getWidthUp();
}
if (generation != 0) x = offset + (getWidthUp() - 1) / 2;
}
