UnityEditor.HandleUtility.WorldPointToSizedRect C# (CSharp) Method

        public static Rect WorldPointToSizedRect(Vector3 position, GUIContent content, GUIStyle style)
        {
            Vector2 vector = WorldToGUIPoint(position);
            Vector2 vector2 = style.CalcSize(content);
            Rect rect = new Rect(vector.x, vector.y, vector2.x, vector2.y);
            switch (style.alignment)
            {
                case TextAnchor.UpperCenter:
                    rect.xMin -= rect.width * 0.5f;
                    break;

                case TextAnchor.UpperRight:
                    rect.xMin -= rect.width;
                    break;

                case TextAnchor.MiddleLeft:
                    rect.yMin -= rect.height * 0.5f;
                    break;

                case TextAnchor.MiddleCenter:
                    rect.xMin -= rect.width * 0.5f;
                    rect.yMin -= rect.height * 0.5f;
                    break;

                case TextAnchor.MiddleRight:
                    rect.xMin -= rect.width;
                    rect.yMin -= rect.height * 0.5f;
                    break;

                case TextAnchor.LowerLeft:
                    rect.yMin -= rect.height * 0.5f;
                    break;

                case TextAnchor.LowerCenter:
                    rect.xMin -= rect.width * 0.5f;
                    rect.yMin -= rect.height;
                    break;

                case TextAnchor.LowerRight:
                    rect.xMin -= rect.width;
                    rect.yMin -= rect.height;
                    break;
            }
            return style.padding.Add(rect);
        }

        private static void DrawPoseError(Transform node, Bounds bounds)
        {
            Camera current = Camera.current;

            if (current)
            {
                GUIStyle gUIStyle = new GUIStyle(GUI.skin.label);
                gUIStyle.normal.textColor = Color.red;
                gUIStyle.wordWrap         = false;
                gUIStyle.alignment        = TextAnchor.MiddleLeft;
                Vector3 position = node.position;
                Vector3 vector   = node.position + Vector3.up * 0.2f;
                if (node.position.x <= node.root.position.x)
                {
                    vector.x = bounds.min.x;
                }
                else
                {
                    vector.x = bounds.max.x;
                }
                GUIContent content   = new GUIContent(node.name);
                Rect       position2 = HandleUtility.WorldPointToSizedRect(vector, content, gUIStyle);
                position2.x += 2f;
                if (node.position.x > node.root.position.x)
                {
                    position2.x -= position2.width;
                }
                Handles.BeginGUI();
                position2.y -= gUIStyle.CalcSize(content).y / 4f;
                GUI.Label(position2, content, gUIStyle);
                Handles.EndGUI();
                Handles.color = AvatarSkeletonDrawer.kErrorMessageColor;
                Handles.DrawLine(position, vector);
            }
        }