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RadicalRuleThickness #4

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uvieth opened this issue Jun 6, 2010 · 4 comments
Closed

RadicalRuleThickness #4

uvieth opened this issue Jun 6, 2010 · 4 comments

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@uvieth
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uvieth commented Jun 6, 2010

Hi Khaled,

I had a closer look at the OT math parameters and have one question:
Why is RadicalRuleThickness (66) bigger than Overbar/UnderbarRuleThickness (50)?
Changing RadicalRuleThickness would also make it consistent with RadicalExtraAscender.

I would have expected that all rule thicknesses were suppsed to be consistent.

Regards, Ulrik

@khaledhosny
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66 is the thickness of the horizontal bar of the top component of the composed radical (uni221A.top glyph), and I didn't see a good reason to change other rule thicknesses.

@uvieth
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uvieth commented Jun 6, 2010

OK, that's a good reason. I only looked at the numbers and didn't check the glyphs.

However that means, that the rule thickness in the design of the radical glyph is inconsistent with the overall rule thickness. Could be regarded as a STIX bug.

@khaledhosny
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OK, adding to the list of issues that I need to report back to STIX project.

@khaledhosny
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Just for the record, I found that 66 should be the default rule thickness not 50 that I was using (66 is consistently the thievishness of the hyphen, the minus, the strokes of the plus etc.) So in 56abbd9 I changes rule thickness to 66 and re-based all constants affected by it on the new value (following the recommendations of of OpenType math spec).

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