I search a way to get some detailed parameters about font and glyphs through javascript to create a proper WebGL "font" for non-monospaced fonts.
I think what I am seeking for does not exists, but I ask because one never known.
The factual problem is the following: For monospaced fonts, all is easy because space between characters (glyphs) is the same for all. But for most common fonts, this space is variable. With OpenGL, to properly create non-monospaced fonts, I use the FreeType library which provides all what we need to set the proper shift-to-right (Advance width) for each glyph... But in Javascript how to get his data in easy and quick way ?
The best you can do at the moment is https://www.w3schools.com/tags/canvas_measuretext.asp