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### Display

The main view of Cumulus consists of three information areas, displays containing flight information, a map and a status bar. This screen is also called the map view.

Flight information

The indicators on the left side indicate:

- Trk - Track (also indicated by the direction of the glider symbol)
- Brg - Bearing to target. Tipping on number shows for five seconds with red background the reverse course.
- Arrow - Bearing to target relative to the current heading. Tipping on icon will save the current position as waypoint.
- Dis/Eta - Distance respectively estimated time of arrival to selected target. Tip on label to toggle display.
- Gs - Current ground speed
- Msl/Agl/Std - Current Altitude above MSL/AGL and Standard pressure. Tip on the number to toggle the display.
- Arv - Arrival Altitude above (positive) or below (negative) about selected target (see glide path)
- To - Selected target and in parentheses its elevation. Tip on label to select another target.
- Var - Variometer display derived from gps altitude. Tip on label brings up a dialog box where you can change the integration time.
- Wd - Wind speed and direction. Wind display can be toggled with LD display. Tip on label Wd will toggle the display.
- LD - Required and current LD to selected target. Can be toggled with Wind display. Tip on label LD will toggle the display. See also LD paragraph for more info.
- Mc - McCready value used for glide path and best speed calculation. Tip to open the in flight dialog.
- S2f - Best airspeed for current McCready, variometer and wind information

Of course, all information are displayed in the units you selected in the Units Settings dialog.

Map

The map displays a graphical representation of the current position (indicated by the intersection of the fuselage and the wings in the glider symbol) and heading (indicated by the rotation of the glider symbol). If there is no GPS fix, Cumulus displays an X symbol in stead of a glider. See manual navigation mode for more details. The current scale is displayed in the scale indicator in the lower right corner of the map.
The map shows the terrain elevation by using colors. The detail level of this display changes with the zoom factor: more zoom is more detail in the terrain shapes. You can turn off the drawing of the elevations from the Map Settings dialog.
Depending on the maps you installed, Cumulus displays airports (the type is indicated by the standard ICAO symbol), cities (yellow), highways (red/white), roads (red) and railroads (dark grey), water (blue). Not all details are displayed in all zoom factors. Also Cumulus displays airspace structures. The different types are indicated by using different colors. For basic information on an airport or airspace structure simply touch the related symbol or area on the screen. You will get displayed then the info on the interesting object in a pop up window. The window disappears after a certain time automatically. This time behaviour can be configured more in detail in the menu General Setup under the tab Information.
If you press an airfield icon, you will get detailed information on this item. You can add airfields to your waypoint list if it isn't in the list already. Added waypoints will have a normal priority.
Cumulus can calculate what airfields or waypoints are in reach. These waypoints get a green circle beneath them. If a point is within reach below the entered safety altitude, it gets a magenta circle beneath it. The line to the currently selected waypoint is colored to match, and will be in red if the waypoint is not within reach.

Status bar

The status bar displays the following things:

The first item with the name Menu toggles the menu bar by tipping on it.

The second items tells the mode Cumulus is operating in. If no GPS connection has been established this item will set to Man. Otherwise it will set to GPS and the number of received satellites.

The third item in the status bar is a combination between logging and flight indicator. It displays at the left side a L if IGC logging is enabled and fills the background with green color. Ls is displayed if the logger is in standby mode and the background is filled with yellow color. The flight status symbol is either shown in the center of the box alone, if logging is not active or right beside of the logging indicator.

The following characters are used for flight state display:

- ? - Unknown
- C - Cruising
- L - Circling Left
- R - Circling Right
- S - Standstill
- W - Wave

The fourth item in the status bar indicates the current position in longitude and latitude.
The fifth item shows the selected glider.
The last item is used as display for warnings and other information.

If you want to maximize the screen area for the map display, you can disable the status bar via the menu entry View/Statusbar.

Glide path

The glide path indicator gives you an estimation on whether or not your selected target is in reach. It calculates the performance of your glider using the entered polar-values on the Settings dialog's Glider tab. It is assumed that you fly at the indicated best airspeed for the current McCready value. You can enter a minimal arrival altitude on the Personal tab.
If the indicator shows a negative value, you are under glide path and the target is not in reach. If you are above glide path, the target is in reach, and you can probably fly a bit faster to reach it sooner, depending on the polar of your glider.

LD-Display

Beside the glide path indicator you can check too with the LD display, if you are on the right way. Precondition for the LD calculation is, that you have selected a target otherwise nothing is displayed. The LD display consists of two values, devided by a slash. On the left side the required LD to the selected target is displayed. Safety altitude and elevation of the target are considered in the calculation. On the right side the current LD is displayed calculated over the last 60s. If the current LD is higher as the required LD you should be on a safe way to your selected target. When you have climbed or you could fly on the same altitude level in the last 60s the display shows a value like >99. If the calculation result is not sensefull, a dash is shown as result in the display.

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