What is the default line spacing value?

TextMeshProUGUI.lineSpacing is a public field to define extra line spacing for the text. What is the recommended way to access the value of the line spacing that is applied by default (before lineSpacing is added)?

 

The line spacing is defined in the font asset in the Face Info. This is typically

LineSpacing = Ascender - Descender + LineGap

Line gap is the difference between LineSpacing and Ascender - Descender.

Having said that, the lineSpacing property simply adds more spacing to the value defined in the font asset. This also corresponds to the line spacing in the text object component inspector.

 

I thought LineGap was what I was looking for, but it seems not. When text automatically wraps, extra spacing between lines seems to be added. Pictured below are several text objects that have been lined up in a custom vertical layout group. The layout group isn't adding any extra spacing between the text objects, but there is a noticeably taller gap between the lines of the wrapped text objects. I'm not sure where the setting is for this gap. I'd like to control/read it via script.

 

Are these text objects all using the same font asset?

You can visualize this line spacing and text metrics by adding the TMP_TextInfoDebugTool.cs script found in the TMP Examples & Extras to these text objects. This will allow you to see the Ascent and Descent lines which might help you understand where the extra spacing is coming from.

Please consider using Preview 14 of the TMP package and to upgrade to the non preview release when it is available later this week / over the weekend.

 

Thanks for the quick reply. That debug tool is tremendously helpful! It helped me discover my issue, which turned out to simply be that I wasn't taking ascender and descender values into account in a different place in my script. Doh! Thank you!