public float getCharacterAdvance(char curChar, char nextChar, float size) {
        BitmapCharacter c = charSet.getCharacter(curChar);
        if (c == null)
            return 0f;

        float advance = size * c.getXAdvance();
        advance += c.getKerning(nextChar) * size;
        return advance;
    }
Gets the line height of a StringBlock.

@param sb the block to measure (not null, unaffected)
@return the line height
jme3-core/src/main/java/com/jme3/font/BitmapFont.java