private void diamond_Click(object sender, EventArgs e)
{
DiamondSquare ds = new DiamondSquare(
(int)num_iter_fract.Value,
0,
512f,
(float)shoroh.Value
);
ds.Iterate();
Graphics graphics;
graphics = Graphics.FromImage(pictureBox.Image);
graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
graphics.Clear(pictureBox.BackColor);
ds.Draw(graphics);
pictureBox.Refresh();
}