How to get the available Cameras

MIP
, ,
1

I have added som cameras in my Management Client.

How can I find them in my plugin. Have tried the Configuration.Instance.GetItems().

But here i only find one item with the Kind.Camera kind.

Any tips on how I could get all the Camera Items as a list?

Earlier i have used the ItemPickerForm, then i can pick all the cameras I have added. But i cant find them all with other methods.

2

Hi,

You can try with this:

List<Item> items = Configuration.Instance.GetItemsByKind(Kind.Camera);
                if (items.Any())
                {
                    foreach (Item i in items)
                    {
                        EnvironmentManager.Instance.Log(false, "Log name and Id", i.Name + " : " + i.FQID.ObjectId.ToString());
}
}

This way you should get all enabled cameras.

3

The .GetItems() method returns a hierarchy. Here’s one way to enumerate through the hierarchy when all you want is a flat enumerable of unique (non-repeating) items. The HashSet is used to check whether we have already yield returned an Item with the same ObjectId. I use a Stack because I prefer to avoid recursive method calls when the depth of a hierarchy is unpredictable. In reality I doubt there are (m)any installations where the hierarchy could cause a stack overflow, but better safe than sorry. Plus I think the stack approach is far more readable.

private static IEnumerable<Item> EnumerateItemsByKind(Guid kind)
{
    var hashSet = new HashSet<Guid>();
    var stack = new Stack<Item>(Configuration.Instance.GetItemsByKind(kind));
    while (stack.Count > 0)
    {
        var item = stack.Pop();
 
        // If item is a folder of any kind, get the child items and add to stack
        if (item.FQID.FolderType != FolderType.No)
        {
            item.GetChildren().ForEach(stack.Push);
            continue;
        }
 
        // The same object could be listed in more than one place in a hierarchy.
        // Using a hashset to quickly determine if a GUID has already been seen.
        if (hashSet.Contains(item.FQID.ObjectId))
        {
            continue;
        }
 
        // Item is not a folder and the FQID.Kind should match the desired kind.
        hashSet.Add(item.FQID.ObjectId);
        yield return item;
    }
}
4

This was exactly what i was looking for, it works perfectly. Thank you!