TextMesh Pro Sharing code for GetRenderedValues that doesn't return stupid values

Absolutely LOVE TMP, but we've had no end of problems using GetRenderedValues; it just loves to return Infinity, NaN, or other stupid values.
Would sort of love to see this get fixed, but in the meantime here's a function that makes it work as you'd expect, and also allows passing a custom string, just like GetPreferredValues(text) does.

Gist here, which I'll update with improvements as they come.

Code (CSharp):

1. // Gets the tightest bounds for the text by updating the text and using GetRenderedValues
2.     // Note this uses sizeDelta for sizing so won't work when using anchors.
3.     // This is wayyyy more reliable than the actual GetRenderedValues because it won't return stupid values, as GetRenderedValues is prone to doing.
4.     public static Vector2 GetRenderedValues (this TMP_Text textMeshPro, string text, float maxWidth = Mathf.Infinity, float maxHeight = Mathf.Infinity, bool onlyVisibleCharacters = true) {
5.         if(string.IsNullOrEmpty(text)) return Vector2.zero;
6.  
7.         var originalRenderMode = textMeshPro.renderMode;
8.         var originalText = textMeshPro.text;
9.         var originalDeltaSize = textMeshPro.rectTransform.sizeDelta;
10.      
11.         textMeshPro.renderMode = TextRenderFlags.DontRender;
12.         textMeshPro.text = text;
13.         textMeshPro.rectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, maxWidth);
14.         textMeshPro.rectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, maxHeight);
15.         textMeshPro.ForceMeshUpdate(true);
16.  
17.         if(text.Length == 0) return Vector2.zero;
18.         // This doesn't work if the component is disabled - but it's better! I'm not even sure this function works while disabled...
19.         // if(textMeshPro.textInfo.characterCount == 0) return Vector2.zero;
20.  
21.         // If width/height is Infinity/<0 renderedSize can be NaN. In that case, use preferredValues
22.         var renderedSize = textMeshPro.GetRenderedValues(onlyVisibleCharacters);
23.         if(IsInvalidFloat(renderedSize.x) || IsInvalidFloat(renderedSize.y)) {
24.             var preferredSize = textMeshPro.GetPreferredValues(text, maxWidth, maxHeight);
25.             // I've seen this come out as -4294967000.00 when the string has only a zero-width space (\u200B) with onlyVisibleCharacters true. In any case it makes no sense for the size to be < 0.
26.             preferredSize = new Vector2(Mathf.Max(preferredSize.x, 0), Mathf.Max(preferredSize.y, 0));
27.             if(IsInvalidFloat(renderedSize.x)) renderedSize.x = preferredSize.x;
28.             if(IsInvalidFloat(renderedSize.y)) renderedSize.y = preferredSize.y;
29.         }
30.  
31.         bool IsInvalidFloat (float f) {return float.IsNaN(f) || f == Mathf.Infinity || f < 0;}
32.      
33.         textMeshPro.renderMode = originalRenderMode;
34.         textMeshPro.text = originalText;
35.         textMeshPro.rectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, originalDeltaSize.x);
36.         textMeshPro.rectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, originalDeltaSize.y);
37.         textMeshPro.ForceMeshUpdate(true);  
38.      
39.         return renderedSize;
40.     }