GetPickedObject doesn't get objects

[LefjuCabro]

Hello,

In a basic glscene scene, I noticed an issue with the GetPickedObject function.
This function doesn't always return an object, even though visually it's clear that the user has clicked on it.

My scene contains a camera (CameraStyle=csPerspective), 1 dummyCube, and 2 spheres (Pickable=True).

In the attached image, the red dots represent the positions of the mouse clicks for which GetPickedObject returns nil.

Thanks for your advices

[shine world]

In the past I've used the function and it worked for me to catch a TGLFreeForm:

procedure TGLSceneFrame.GLSceneViewerMouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
var
  PickedObject: TGLBaseSceneObject;
begin
  // checks if ctrl + shift + left mouse and control key pressed
  if Shift = [ssCtrl, ssShift, ssLeft] then
  begin
    PickedObject := GLSceneViewer.Buffer.GetPickedObject(X, Y);
    if PickedObject is TGLFreeForm then
    begin
      // my code
    end;
  end;
end;

[LefjuCabro]

Hi ShineWorld,
Thanks for your answer.
Unfortunately, that's the same method I was using, and it was causing the problem mentioned above.

[shine world]

I'm using GetPickedObject without issues with:
v2025.3 (SHA-1 70d1ef46696949214c615048358a3ad4916d3266 of 19 Sep 2025),
but I use it ONLY with TGLFreeForm objects (actually they are filled with STL files).

Check the video ( https://youtu.be/ASK4yTvK_hE ) where with CTLR + SHIFT and LEFT mouse button I can select a TGLFreeForm, draw a red container box, and select it in list of geometries (STL files).