/// <summary>
/// Updates the line segment.
/// </summary>
public void Update(LinePoint pointA, LinePoint pointB)
{
bool empty = PointA.Equals(default(LinePoint)) && PointB.Equals(default(LinePoint));
Vector2 normalA = new Vector2(PointA.Position.y - PointB.Position.y, PointB.Position.x - PointA.Position.x).normalized;
Vector2 normalB = new Vector2(pointA.Position.y - pointB.Position.y, pointB.Position.x - pointA.Position.x).normalized;
NormalA = empty ? normalB : normalA;
NormalB = normalB;
PointA = pointA;
PointB = pointB;
}
