Комментарии к коду рисования

namespace WindowsFormsApplication2 
{ 
public partial class Form1 : Form 
{ 
public Form1() 
{ 
InitializeComponent(); 
} 
 
int x_car; 
int y_car; 
private void Form1_Load(object sender, EventArgs e) 
{ 
x_car = 50; 
y_car = 470; 
} 
 
private void MainForm_Paint(object sender, PaintEventArgs e) 
{ 
Background(e.Graphics); 
Car(e.Graphics, x_car,y_car); 
} 
 
private void Background(Graphics g) 
{ 
Pen pen_B = new Pen(Color.Black, 5); 
Pen pen_W = new Pen(Color.White, 5); 
 
g.FillRectangle(Brushes.Gray, 0, 300, 800, 250); 
g.FillRectangle(Brushes.ForestGreen, 0, 500, 800, 100); 
g.FillRectangle(Brushes.Yellow, 0, 150, 800, 150); 
g.FillRectangle(Brushes.Blue, 0, 0, 800, 150); 
 
 
g.DrawLine(pen_B, 0, 500, 800, 500); 
pen_W.DashStyle = DashStyle.Dash; 
g.DrawLine(pen_W, 0, 395, 800, 395); 
g.DrawLine(pen_B, 0, 300, 800, 300); 
} 
 
private void Car(Graphics g, int x, int y) 
{ 
g.FillPolygon(Brushes.Red, new Point[]{new Point(x,y), new Point(x,y-100), new Point(x+200,y-100), new Point(x+250, y-50), new Point(x+250,y)}); 
g.FillEllipse(Brushes.Black, x + 20, y-25, 50, 50); 
g.FillEllipse(Brushes.Black, x + 180, y - 25, 50, 50); 
g.FillPolygon(Brushes.DarkBlue, new Point[] { new Point(x + 200, y - 90), new Point(x + 245, y - 45), new Point(x + 200, y - 45) }); 
} 
 
private void Form1_KeyDown(object sender, KeyEventArgs e) 
{ 
if (e.KeyCode == Keys.Left) 
{ 
x_car = x_car - 10; 
this.Invalidate(); 
} 
 
if (e.KeyCode == Keys.Right) 
{ 
x_car = x_car + 10; 
this.Invalidate(); 
} 
} 
} 
 
}