Without this it will cause a nil dereference resulting in
Nasal runtime error: non-objects have no members
at D:/Program Files/FlightGear 2018.2.2/data/Nasal/canvas/map/WPT.lcontroller, line 57
called from: D:/Program Files/FlightGear 2018.2.2/data/Nasal/canvas/map/WPT.lcontroller, line 79
called from: D:/Program Files/FlightGear 2018.2.2/data/Nasal/canvas/MapStructure.nas, line 1088
called from: D:/Program Files/FlightGear 2018.2.2/data/Nasal/geo.nas, line 384
called from: D:/Program Files/FlightGear 2018.2.2/data/Nasal/canvas/MapStructure.nas, line 1051
called from: D:/Program Files/FlightGear 2018.2.2/data/Nasal/canvas/MapStructure.nas, line 1059
called from: D:/Program Files/FlightGear 2018.2.2/data/Nasal/canvas/map/WPT.lcontroller, line 26
called from: D:/Program Files/FlightGear 2018.2.2/data/Nasal/globals.nas, line 119
- DTO MapStructure layer to provide a DTO line to a lat/lon
- Support for scrolling lists in the PFD/GroupElement
- Support MAP (NavigationMap) and ENGINE (EIS) soft-keys from other pages.
Allow a MFD to be controlled via Emesary notifications (notifications.PFDEventNotification);
Notification needs to be constructed with the following parameters;
1 - MFD designation (text; name of MFD)
2 - MFD identity (int, id of the MFD within the model). Default 1; same as used when creating the MFD
3 - Event type (PFDEventNotification.SoftKeyPushed, notifications.PFDEventNotification.ChangeMenuText
4 - Event parameter.
a) for PFDEventNotification.SoftKeyPushed an int identifying the button
b) for notifications.PFDEventNotification.ChangeMenuText a hash array containing the menu ID and the new text (e.g. [{ Id: 1, Text: "NNN"}])
Method obj.PFD.RegisterWithEmesary(emesary.GlobalTransmitter) need to be called to connect the MFD to a transmitter
Don't use the built-in SVG/rect parser, since this bypasses creating
coordinate / command properties which some Canvas users rely upon.
This reverts commit 57a2d21ddf.
- properly referencing the canvas namespace, so that the ND module can be separately included via io.include()
- moving the initialization of aircraft specific SVG elements into the navdisplay.styles file, and the corresponding Boeing/Airbus entries there (see initialize_elements())
This links together the generic MFD and the NavDisplay; it allows a fairly easy method to add a Map page to an MFD device.
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See: http://wiki.flightgear.org/Canvas_MFD_Framework
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Instantiate parameters:
1. pfd_device (instance of PFD_Device)
2. instrument display ident (e.g. mfd-map, or mfd-map-left mfd-map-right for multiple displays) - used to map to the property tree
3. layer_id: main layer in the SVG
4. nd_group_ident : group (usually within the main layer) to place the NavDisplay
5. [optional] switches - used to connect the property tree to the nav display. see the canvas nav display.
To add a canvas nav display page simply do
me.some_page = PFD_NavDisplay.new(me.PFD,"Situation", "mpcd-sit", "ID", "jtids_main");
