UnityEngine.Font.GetCharacterInfo C# (CSharp) Method

        public bool GetCharacterInfo(char ch, out CharacterInfo info)
        {
            FontStyle normal = FontStyle.Normal;
            int size = 0;
            return this.GetCharacterInfo(ch, out info, size, normal);
        }

    ///////////////////////////////////////////////////////////////////////////////
    // build mesh
    ///////////////////////////////////////////////////////////////////////////////
    // ------------------------------------------------------------------
    // Desc: This only calculate result in one line
    // ------------------------------------------------------------------
    public static void BuildTextLine( Vector3[] _vertices, Vector2[] _uvs, 
                                       string _text, 
                                       Font _font, 
                                       int _lineHeight,
                                       int _fontSize, 
                                       int _wordSpacing, 
                                       int _letterSpacing )
    {
        int cur_x = 0;
        int cur_y = 0;

        // yes, Unity's GetCharacterInfo have y problem, you should get lowest character j's y-offset adjust it.
        CharacterInfo jCharInfo;
        _font.RequestCharactersInTexture ( "j", _fontSize, FontStyle.Normal );
        _font.GetCharacterInfo('j', out jCharInfo, _fontSize, FontStyle.Normal);
        float ttf_offset = (_fontSize + jCharInfo.vert.yMax);

        //
        for ( int i = 0; i < _text.Length; ++i ) {
            char cur_char = _text[i];

            // NOTE: we skip new-line operation, since we believe this function only have one-line text
            if ( cur_char == '\n' ) {
                continue;
            }

            // generate mesh
            CharacterInfo charInfo;
            _font.GetCharacterInfo ( cur_char, out charInfo, _fontSize );
            int idx = 4*i;

            // build vertices
            _vertices[idx + 0] = new Vector3(cur_x + charInfo.vert.xMin, cur_y - charInfo.vert.yMin + ttf_offset, 0.0f);
            _vertices[idx + 1] = new Vector3(cur_x + charInfo.vert.xMax, cur_y - charInfo.vert.yMin + ttf_offset, 0.0f);
            _vertices[idx + 2] = new Vector3(cur_x + charInfo.vert.xMax, cur_y - charInfo.vert.yMax + ttf_offset, 0.0f);
            _vertices[idx + 3] = new Vector3(cur_x + charInfo.vert.xMin, cur_y - charInfo.vert.yMax + ttf_offset, 0.0f);

            // build uv
            if ( charInfo.flipped ) {
                _uvs[idx + 0] = new Vector2(charInfo.uv.xMax, charInfo.uv.yMin);
                _uvs[idx + 1] = new Vector2(charInfo.uv.xMax, charInfo.uv.yMax);
                _uvs[idx + 2] = new Vector2(charInfo.uv.xMin, charInfo.uv.yMax);
                _uvs[idx + 3] = new Vector2(charInfo.uv.xMin, charInfo.uv.yMin);
            }
            else {
                _uvs[idx + 0] = new Vector2(charInfo.uv.xMin, charInfo.uv.yMax);
                _uvs[idx + 1] = new Vector2(charInfo.uv.xMax, charInfo.uv.yMax);
                _uvs[idx + 2] = new Vector2(charInfo.uv.xMax, charInfo.uv.yMin);
                _uvs[idx + 3] = new Vector2(charInfo.uv.xMin, charInfo.uv.yMin);
            }

            // advance x
            cur_x += (int)charInfo.width + _letterSpacing;
            if ( cur_char == ' ' )
                cur_x += _wordSpacing;
        }
    }