/// <summary>
/// Get the Knob rect in screen space, ZOOMED, for Input purposes
/// </summary>
public Rect GetScreenKnob()
{
Rect rect = GetGUIKnob();
rect.position -= NodeEditor.curEditorState.zoomPanAdjust; // Remove zoomPanAdjust added in GetGUIKnob
return(NodeEditor.CanvasGUIToScreenRect(rect));
}