public void PolygonByArea()
{
var polygon = Shaper.PolygonByArea(9.0, 1.0, new Vector3(10.0, 10.0));
Assert.Equal(9.0, polygon.Area);
Assert.Contains(polygon.Vertices, p => p.X == 10.0 && p.Y == 10.0);
Assert.Contains(polygon.Vertices, p => p.X == 13.0 && p.Y == 13.0);
Assert.Contains(polygon.Vertices, p => p.X == 10.0 && p.Y == 13.0);
Assert.Contains(polygon.Vertices, p => p.X == 13.0 && p.Y == 13.0);
}