Изобразить треугольник Серпинского

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
 
namespace Triangle
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
Paint += Form1_Paint;
}
private void Form1_Paint(object sender, PaintEventArgs e);
void Triangle(float x1, float y1, float x2, float y2, float x3, float y3, int n)
{
Graphics gr = e.Graphics;
Pen pen = new Pen(Color.Black, 3);
float P;
PointF p1, p2, p3;
x1 = 200;
x2 = 150;
x3 = 100;
y1 = 200;
y2 = 100;
y3 = 200;
P = 0.5F;
n = 10;
gr.DrawLine(pen, x1, y1, x2, y2); //Строим треугольник по координатам
gr.DrawLine(pen, x2, y2, x3, y3);
gr.DrawLine(pen, x3, y3, x1, y1);
{
if (n < 1)
return;
}
if (n > 1)
{ //Рассчетные координаты
float x1n, x2n;
float y1n, y2n;
float x3n, y3n;
x1n = x1 + (x2 - x1) / P;
y1n = y1 + (y2 - y1) / P;
 
x2n = x2 + (x3 - x2) / P;
y2n = y2 + (y3 - y2) / P;
 
x3n = x3 + (x1 - x3) / P;
y3n = y3 + (y1 - y3) / P;
p1 = new PointF(x1, y1);
p2 = new PointF(x2, y2);
p3 = new PointF(x3, y3);
Triangle(x1, y1, x1n, y1n, x3n, y3n, n - 1);
Triangle(x2, y2, x1n, y1n, x2n, y2n, n - 1);
Triangle(x3, y3, x2n, y2n, x3n, y3n, n - 1);
}
}
}
}

private void Form1_Paint(object sender, PaintEventArgs e);