Getting screen space of App Button?

[Agathorn]

I want to get the screen space coordinates of my button in the app launcher so that I can position the open window relative to the button just like the stock GUI does.

However I can't seem to figure out how to do this. I can grab the button's transform, but that appears to be in world 3d space, and I can't figure out how to get the proper camera to translate them, I tried this code, but it just throws NRE's all over the place.

        internal void CalculateWindowBounds()
        {
            if (appLauncherButton == null)
                return;
            Transform buttonTransform = appLauncherButton.transform;
            Debug.Log("TestFlight MasterStatusDisplay: buttonTransform = " + buttonTransform.localPosition);
            Vector3 buttonCoords = HighLogic.fetch.camera.WorldToScreenPoint(buttonTransform.localPosition);
            Debug.Log("TestFlight MasterStatusDisplay: buttonCoords = " + buttonCoords);
        }

[TriggerAu]

This will get you there, but you do need to get the right camera. So in the editor or flight mode it works, but in the SC scene its not the right camera.

gives you the bottom right corner of the button if ApplicationLauncher.isPositionedAtTop is true or the top right corner is the app launcher is at the bottom

Camera.current.WorldToScreenPoint(appLauncherButton.GetAnchor())

[Agathorn]

Thanks, so it looks like I am on the right track, I just need to figure out how to get the proper camera. Like you said in Flight mode its easy, but not sure about the other scenes. Guess I have some API digging ahead of me.

For now I'm just going to cop out and use a fixed position relative to the corner of the screen I think.

[TriggerAu]

yeah you need three of em from memory

mapview.mapcamera

spacecentercamera

and you can use current camera for the flight and editor scenes

[blizzy78]

Shouldn't there be a UI camera object somewhere in the scene? As a last resort, you could simply get that object by name, and use that.

[TriggerAu]

Shouldn't there be a UI camera object somewhere in the scene? As a last resort, you could simply get that object by name, and use that.

yeah, but I couldn't recall that one off the top of my head

[blizzy78]

Me neither, but the name should be pretty easy to find.