/// <summary>
/// Refreshes the graphics.
/// </summary>
/// <param name="centerX">The center x.</param>
/// <param name="centerY">The center y.</param>
private void RefreshGraphics(int centerX = 0, int centerY = 0)
{
if (centerX == 0 || centerY == 0)
{
centerX = groupBoxDrawArea.Bounds.Width / 2;
centerY = groupBoxDrawArea.Bounds.Height / 2;
}
this.graphics.Clear(Color.White);
this.graphics = groupBoxDrawArea.CreateGraphics();
string businessProcess = this.tabControlArea.SelectedTab.Text;
BusinessProcess bc = this.cmodel.GetBusinessProcess(businessProcess);
bc.DrawSunModelGraphics(this.graphics, centerX, centerY, groupBoxDrawArea.Bounds.Width, groupBoxDrawArea.Bounds.Height, this.zoom);
}