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caryll / otfcc

Optimized OpenType builder and inspector.
Apache License 2.0
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Option to get relative contour values #31

Closed RoelN closed 7 years ago

RoelN commented 7 years ago

In the spec I read about coordinates:

First coordinates relative to (0,0); others are relative to previous point.

Yet the coordinates dumped with otfcc all seem to be relative to (0, 0). Is there any way to dump/compile them relative to the previous point?

(This is a very similar request I did for ttx/FontTools if you want an example)

be5invis commented 7 years ago

Why do you need relative positions? I cannot see any scenarios for relative ones. otfcc used float number for coordinates internally, so your problem in fonttools should not happen. Note: otfcc is not for strict round-trip.

RoelN commented 7 years ago

I can see I can go up to -32767 (not -32768) and 32767 as values, that's great. With relative values I could reach even more absurd glyph sizes, unless some other value (like the side bearings) is limited to a SHORT. I'm just experimenting to see how large a glyph can get!

be5invis commented 7 years ago

Since the internal precision has been increased to avoid rounding error when processing your font, I think this issue can be closed due to inactivity. Maybe @RoelN you can write a Node.JS script to do this, it is very simple.