DDA algoritması;

void DDACiz(int x1, int y1, int x2, int y2){

 int PikselSayisi;

 int dx, dy;
 float x, xFark;
 float y, yFark;

 dx = x2 - x1;
 dy = y2 - y1;

 PikselSayisi = Math.Abs(dx) > Math.Abs(dy) ? Math.Abs(dx) : Math.Abs(dy);

 xFark = (float)dx / (float)PikselSayisi;
 yFark = (float)dy / (float)PikselSayisi;

 x = (float)x1;
 y = (float)y1;

 while(PikselSayisi--){
 PikselBas((int)floor(x + 0.5F), (int) Math.Floor(y + 0.5f));
 x += xFark;
 y += yFark;
 }
}

Bresenham algoritması;
void dogruBresenham(int x1, int y1, int x2, int y2)

{
            int hata = x1 - x2;
            int dx2 = (x2 - x1) * 2;
            int dy2 = (y2 - y1) * 2;
            int x, y = y1;

            System.Drawing.SolidBrush m_tualbrush = new System.Drawing.SolidBrush(m_brushcolor);
            System.Drawing.Graphics tualgraphics = panel1.CreateGraphics();
            for (x = x1; x < x2; x++)
            {
                //pikselBas(x, y);
                foreach (Point p in m_nokta)
                {
                    tualgraphics.FillEllipse(m_tualbrush, x, y,trackBar1.Value,trackBar1.Value);
               }
                   hata += dy2;

                if (hata > 0)
                {
                    y++;
                    hata -= dx2;
                }

            }
        }   void dogruBresenham(int x1, int y1, int x2, int y2)
        {
            int hata = x1 - x2;
            int dx2 = (x2 - x1) * 2;
            int dy2 = (y2 - y1) * 2;
            int x, y = y1;

            System.Drawing.SolidBrush m_tualbrush = new System.Drawing.SolidBrush(m_brushcolor);
            System.Drawing.Graphics tualgraphics = panel1.CreateGraphics();
            for (x = x1; x < x2; x++)
            {
                //pikselBas(x, y);
                foreach (Point p in m_nokta)
                {
                    PixelBas(m_tualbrush, x, y,trackBar1.Value,trackBar1.Value);
               }
                   hata += dy2;

                if (hata > 0)
                {
                    y++;
                    hata -= dx2;
                }

            }
        }

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