// ===================== PUBLIC methods to modify Graphical View properties ===================
public void ChangeBackgroundColor(bool gradient, double[] color1, double[] color2)
{
if (gradient == true)
{
Viewport.GradientBackgroundOn();
Viewport.SetBackground(color1[0] / 255.0, color1[1] / 255.0, color1[2] / 255.0);
Viewport.SetBackground2(color2[0] / 255.0, color2[1] / 255.0, color2[2] / 255.0);
}
else
{
Viewport.GradientBackgroundOff();
Viewport.SetBackground(color1[0] / 255.0, color1[1] / 255.0, color1[2] / 255.0);
}
}