Segment selector: suggestion to replace lookup table with Boolean operations

[Fribur]

To keep topics separated, opening this topic here for the suggestion to replace the lookup table (an indirection I found difficult to reason about) with straight forward booleans:

(1) first combine myFill and otherFill into a finalFill. (2)

switch (clipType)
{
	case ClipType.Union:
		finalAbove = above | otherAbove;
		finalBelow = below | otherBelow;
		break;
	case ClipType.Intersection:
		finalAbove = above & otherAbove;
		finalBelow = below & otherBelow;
		break;
	case ClipType.Difference:
		finalAbove = above & !otherAbove;
		finalBelow = below & !otherBelow;
		break;
	case ClipType.DifferenceRev:
		finalAbove = !above & otherAbove;
		finalBelow = !below & otherBelow;
		break;
	case ClipType.Xor:
		finalAbove = above ^ otherAbove;
		finalBelow = below ^ otherBelow;
		break;
}

(2) "Keep" is determined via XOR of finalAbove and finalBelow .

if (finalAbove ^ finalBelow)
{
	result.Add(new Segment
	{
		p0_start = segment.p0_start,
		p1_end = segment.p1_end,
		above = finalAbove ? FillStatus.Filled : FillStatus.NotFilled,
		below = finalBelow ? FillStatus.Filled : FillStatus.NotFilled,
		otherAbove = FillStatus.Undefined,
		otherBelow = FillStatus.Undefined,
	});
}

Reference: https://github.com/Fribur/TextMeshDOTS/blob/fd85270dfe76f80597b4225ac1750665a4f59f9a/Polybool/SegmentSelector.cs#L7