Is it safe to use non-integral coordinates?
FontForge allows you to edit with non-integral coordinates. Many font editors don’t and some have wondered if the use of non-integral coordinates will it distort their fonts when they are rasterized? The answer depends on the font format and how you save the font. TrueType fonts can only express integral coordinates. When FontForge creates a TrueType font it will round all coordinates to integers. This rounding will introduce a slight distortion in the curve. PostScript (type1, PostScript OpenType, type2, etc.) fonts can express non-integral coordinates in the font format — but it takes a lot more space in the font file. Type1 fonts tend to take more space to express this than type2 (opentype) fonts. By default FontForge will round to int on these as well, BUT you can change that in the Generate Options dialog. If your font is rounded then there will be some distortion. If it is not rounded there should be no distortion. In PostScript fonts it should be safe to use non-integral coordi
