Camera Controller - Disable Rotations in 3D View

Question

I was wondering if there is an option to disable 3D rotations for the camera in a scene. What I eventually want to achieve is to have a 2D top-down view, where 3D rotations of the camera are not allowed and another isometric view where 3D rotations of camera are allowed.

Best,

Selim

SelimOzel · Answer

Thanks again! I might actually use this in other places as well.

JamesBallard1 · Answer

Hi Selim Ozel‌,

Thanks for the extra info. You shouldn't have to filter all events. Depending on what type of devices you're targeting this should work. This should cover all mouse scenarios where all the pitch and roll changes are done with the right mouse button. You can selectively discard those, as shown below.

connect(m_sceneView, &SceneQuickView::mouseMoved, this, [this](QMouseEvent& mouseEvent)

{

// "accept" to throw away move events when the right button is pressed to

// disable changing the pitch of the SceneView

if ((mouseEvent.buttons() & Qt::RightButton) != 0)

mouseEvent.accept();

});

Another approach would be to consider a 2D MapView instead of the SceneView. If you want to restrict all interactions to make it appear in "2D" mode, then perhaps a Map would suffice?

We actually have a sample for doing just that. Please see here:

https://github.com/Esri/arcgis-runtime-samples-qt/tree/master/ArcGISRuntimeSDKQt_CppSamples/Scenes/SyncMapViewSceneView

SelimOzel · Answer

Thanks! I am using C++, not qml. I would like to disable camera pitch motion. I want to avoid using filters for mouse clicks. Because I don't want to write code specific for each input device.

Let me know if you need more context.