Vector3 GetInput()

in unity/Assets/PostProcessingV2/Editor/Decorators/TrackballDecorator.cs [155:197]
40 lines of code
13 McCabe index (conditional complexity)

        Vector3 GetInput(Rect bounds, Vector3 hsv, Vector2 thumbPos, float radius)
        {
            var e = Event.current;
            var id = GUIUtility.GetControlID(k_ThumbHash, FocusType.Passive, bounds);
            var mousePos = e.mousePosition;

            if (e.type == EventType.MouseDown && GUIUtility.hotControl == 0 && bounds.Contains(mousePos))
            {
                if (e.button == 0)
                {
                    var center = new Vector2(bounds.x + radius, bounds.y + radius);
                    float dist = Vector2.Distance(center, mousePos);

                    if (dist <= radius)
                    {
                        e.Use();
                        m_CursorPos = new Vector2(thumbPos.x + radius, thumbPos.y + radius);
                        GUIUtility.hotControl = id;
                        GUI.changed = true;
                    }
                }
                else if (e.button == 1)
                {
                    e.Use();
                    GUI.changed = true;
                    m_ResetState = true;
                }
            }
            else if (e.type == EventType.MouseDrag && e.button == 0 && GUIUtility.hotControl == id)
            {
                e.Use();
                GUI.changed = true;
                m_CursorPos += e.delta * GlobalSettings.trackballSensitivity;
                GetWheelHueSaturation(m_CursorPos.x, m_CursorPos.y, radius, out hsv.x, out hsv.y);
            }
            else if (e.rawType == EventType.MouseUp && e.button == 0 && GUIUtility.hotControl == id)
            {
                e.Use();
                GUIUtility.hotControl = 0;
            }

            return hsv;
        }