Virtual cursor raycasting

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:information_source: Attention Topic was automatically imported from the old Question2Answer platform.
:bust_in_silhouette: Asked By smslv

I have a viewport translating on a 3d sprite. On viewport I have a virtual cursor (which is 2d sprite) which I move with

public override void _Process(float delta)
{
    var mousePosNew = GetViewport().GetMousePosition();
    mouseAxis = mousePosNew - mousePosPrev;
    mousePosPrev = mousePosNew;
    cursorPos.x = Mathf.Clamp(cursorObj.Position.x + mouseAxis.x * cursorSpeed.x, cursorSize.x/2, screenSize.x - cursorSize.x/2);
    cursorPos.y = Mathf.Clamp(cursorObj.Position.y + mouseAxis.y * cursorSpeed.y, cursorSize.y/2, screenSize.y - cursorSize.y/2);
    cursorObj.Position = cursorPos;
}

At different occasions there will be different elements in a viewport, and I cannot know beforehand their positions, sizes and nodes. How would I check if my cursor is inside an element of this viewport to pass a click event to it?