private void PictureBoxPaint_MouseUp(object sender, MouseEventArgs e)
{
if (settings.Mode != EFigure.SmoothCurve)
{
_isFigureCreated = false;
drawingEngine.CleanBackground();
}
currentProcess.Refresh();
memoryLabel.Text = "Memory usage: " + ((float)currentProcess.PrivateMemorySize64 / 1024f / 1024f).ToString("F1") + " MB";
FiguresListBox.Items.Clear();
FiguresListBox.Items.AddRange(drawingEngine.GetFigureList());
}