Add ability to permanently change letter tracking/spacing

[jonpalmisc]

Some fonts look better when the space between letters is increased or decreased. Chang this manually in software such as Photoshop is tedious, and some software like Word or Excel makes it very difficult to make these changes. It would be nice to be able to modify tracking before generating static cuts.

For example, so I can make the font have the spacing shown on the bottom as default:

[jonpalmisc]

Sorry to bother you again, but do you think this would be possible @ViktorRubenko ? Are there sidebearing values in a table that I can uniformly scale, for example: multiply them by 1.2? I would really appreciate your input on this! If you just tell me what I need to do, I can write the code.

[ViktorRubenko]

You can get and set metrics with the hmtx table.
hmtx.metrics = {glyphName: (advanceWidth, lsb)}
rsb = aw - lsb - (xMax - xMin)
The problem is that when you scale negative sb (e.g. fraction sign) by 1.2, instead of increasing space, you will get a decrease.

[jonpalmisc]

I am looking to both increase and decrease space. I will spend some time trying this later today. Thank you!

…

________________________________ From: Viktor Rubenko <notifications@github.com> Sent: Tuesday, February 2, 2021 6:26:27 AM To: jonpalmisc/vfit <vfit@noreply.github.com> Cc: Jon Palmisciano <jp@jonpalmisc.com>; Assign <assign@noreply.github.com> Subject: Re: [jonpalmisc/vfit] Add ability to permanently change letter tracking/spacing (#8) You can get and set metrics with the hmtx table. hmtx.metrics = {glyphName: (advanceWidth, lsb) rsb = aw - lsb - (xMax - xMin) The problem is that when you scale negative sb (e.g. fraction sign) by 1.2, instead of increasing space, you will get a decrease. — You are receiving this because you were assigned. Reply to this email directly, view it on GitHub<#8 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AJ47VKQJVBAZGAHV55X5ZLTS47OOHANCNFSM4W56VOCA>.