I’ve subclassed QQuickVTKItem to display topographic data stored in a file. The QQuickVTKItem::initializeVTK() method sets up the pipeline elements which in my case includes calling vtkAbstractPolyDataReader::SetFile() and vtkAbstractPolyDataReader::Update(). While my app is running the user may specify a new map file to display. In this case, how can I trigger a call to QQuickVTKItem::initializeVTK() in order to load the new image?
Thanks!
Instead of re-running QQuickVTKItem::initializeVTK(), I believe the app should schedule an update to the pipeline’s reader source, in a function passed to QQuickVTKItem::dispatch_async().
@Tomasso QQuickVTKItem::intializeVTK should be used to set up the pipeline. So you can connect your reader to filters and finally to the rendering pipeline (mapper, actor, renderer) in initializeVTK. To change any pipeline inputs, parameters, etc. please use dispatch_async.