Listener Called when camera moved / Bounding Box #131
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@matyhaty The new getVisibleRegion() method has landed (for Android) in #152. iOS support is still WIP (see #170) . |
nicholasray
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I believe the use case for the `onCameraIdle` event [1] is large enough that this event should be able to be listened to directly without having to listen to extraneous events via the ChangeNotifier interface. The extraneous events which I think add too much noise when combined with the camera idle event include: * Camera Start/Move Events * Updating Map Options * Adding/Updating/Removing/Clearing a Symbol, Line, or Circle For example, the use case described in flutter-mapbox-gl#131 where a client wants to display symbols within a bounding box after a user pans the map should be able to have first-class support. FWIW, other flutter mapping plugins provide this ability, and it is very useful. Usage: ``` MapboxMap( onCameraIdle: () { print("Camera has idled."); }, ); ``` [1] https://github.com/tobrun/flutter-mapbox-gl/blob/1bbe7ea7adc8030af16a3cdbf5ade2f94ddea6bd/lib/src/controller.dart#L156 [2] https://github.com/flutter/plugins/blob/61775d32f1d1f0997e0e93bb1e8676b96be9d848/packages/google_maps_flutter/google_maps_flutter/lib/src/google_map.dart#L136
nicholasray
pushed a commit
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that referenced
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May 23, 2020
I believe the use case for the `onCameraIdle` event [1] is large enough that this event should be able to be listened to directly without having to listen to extraneous events via the ChangeNotifier interface. The extraneous events which I think add too much noise when combined with the camera idle event include: * Camera Start/Move Events * Updating Map Options * Adding/Updating/Removing/Clearing a Symbol, Line, or Circle For example, the use case described in flutter-mapbox-gl#131 where a client wants to display symbols within a bounding box after a user pans the map should be able to have first-class support. FWIW, other flutter mapping plugins provide this ability, and it is very useful [2]. Usage: ``` MapboxMap( onCameraIdle: () { print("Camera has idled."); }, ); ``` [1] https://github.com/tobrun/flutter-mapbox-gl/blob/1bbe7ea7adc8030af16a3cdbf5ade2f94ddea6bd/lib/src/controller.dart#L156 [2] https://github.com/flutter/plugins/blob/61775d32f1d1f0997e0e93bb1e8676b96be9d848/packages/google_maps_flutter/google_maps_flutter/lib/src/google_map.dart#L136
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Hi all
We are using this plugin to add a lot of points and lines to the map.
So we need to ensure we only draw what is needed (aka the viewport) and when the camera is moved or panned - we update the map with new points and lines within the new viewport.
We dont seem to have:
Apologies if we have missed this, but any help would be greatly appreciated.
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