private static List<IVector2> removeLastIfRepeated(final List<IVector2> points) {
if (points.size() < 2) {
return points;
}
final IVector2 first = points.get(0);
final int lastIndex = points.size() - 1;
final IVector2 last = points.get(lastIndex);
if (first.closeTo(last)) {
return points.subList(0, lastIndex - 1);
}
return points;
}
private static List<IVector2> removeConsecutiveEqualsPoints(final List<IVector2> points) {
final int pointsCount = points.size();
final ArrayList<IVector2> result = new ArrayList<IVector2>(pointsCount);
for (int i = 0; i < pointsCount; i++) {
final IVector2 current = points.get(i);
final IVector2 next = points.get((i + 1) % pointsCount);
if (!current.closeTo(next)) {
result.add(current);
}
}
result.trimToSize();
return result;
}