I would like to create a display that would look similar to a HUD display. I would like to have the HUD like symbols be displayed conformal and out the window. An example would be a helipad. I would like to have a rectangle displayed around the helipad and have this rectangle show even when clouds or low visibility obscures the helipad. I would also like to have a way to toggle the display on and off. I

You might want to post this in the "Aircraft and Panel Design Forum"!W. Sieffert