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Canvas Map API: Difference between revisions
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== Objective == | == Objective == | ||
The map.nas in $FG_ROOT/Nasal/canvas will serve as the shared backend for all sorts of mapping/charting purposes in FlightGear. So that GUI dialogs and instruments can use the same code. As of 10/2012 the module is still being designed, so nothing written here is set in stone. This page is just intended to document the whole process. | The map.nas in $FG_ROOT/Nasal/canvas will serve as the shared backend for all sorts of mapping/charting purposes in FlightGear. So that GUI dialogs and instruments can use the same code. As of 10/2012 the module is still being designed, so nothing written here is set in stone. This page is just intended to document the whole process. | ||
== Design == | |||
The design follows the basic MVC (Model/View/Controller) principle, i.e.: | |||
* the Model is the data to be shown | |||
* the View is the Layer (Canvas group) | |||
* the controller is the interface to update the model and the view (using timers and/or listeners) | |||
== Supported Layers == | == Supported Layers == | ||