static void Main(string[] args)
{
List <Vector3> points = new List <Vector3>()
{
new Vector3(-8623, 0, -11289),
new Vector3(11808, 0, -11289),
new Vector3(11808, 0, 5688),
new Vector3(-8623, 0, 5688),
new Vector3(-8623, 0, 5688),
};
Vector3 checkP = new Vector3(-5836, 600, 1031);
Console.WriteLine(Geometric.IsPointInArea(points.ToArray(), checkP));
}
