public MainWindow()
        {
            InitializeComponent();

            mainScene = new GR_Scene();

            UpdatePicBoxParams();

            Zc_label.Text            = mainScene.Zc.ToString();
            moveModeButton.BackColor = Color.FromArgb(100, Color.Teal);

            label7.Text = spline_step.ToString();
        }
        private void toolCustomButton4_Click(object sender, EventArgs e)
        {
            OpenFileDialog openFileDialog = new OpenFileDialog();

            if (openFileDialog.ShowDialog() == DialogResult.OK)
            {
                Stream s = File.Open(openFileDialog.FileName, FileMode.Open);

                BinaryFormatter bf = new BinaryFormatter();

                mainScene = (GR_Scene)bf.Deserialize(s);

                s.Close();

                UpdatePicBoxParams();
            }
        }