[smufl-discuss] Re: Augmentation dot

[dspreadbury]

Maurizio wrote:

>Question 1); Why two glyphs?

U+E216 is intended as the glyph to be used by scoring programs when constructing notes out of individual glyphs (e.g. notehead, optional flag, optional augmentation dot) and primitives (e.g. stem, optional beam, etc.).

U+E22C is intended for combination with the other glyphs in the 'Beamed groups of notes' range, which is really intended only for text-based applications, as stated in the 'Implementation notes' for that range (on page 42 of the SMuFL 0.6 specification).

>Question 2): neither glyph seems to follow the registration guide
>lines
>outlined in the standard introductory pages, which say (p. 15):
>...
>Which is the rationale behind the registration choices for those two
>glyphs?

U+E22C is registered such that it is vertically positioned correctly relative to the other notes in that range; e.g. if you type U+E220 followed by U+E22C in a single run of text in a text-based application, the rhythm dot is positioned correctly.

U+E216 is registered incorrectly in Bravura 0.3. It should be registered such that y=0 crosses the exact centre of the rhythm dot. Thank you for pointing out this mistake, which I will ensure is corrected in the next revision of the font.

Thanks for your feedback, as always.

Daniel
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[Maurizio M. Gavioli]

Thank you for your quick reply!

dspreadbury wrote

U+E216 is intended as the glyph to be used by scoring programs when constructing notes out of individual glyphs (e.g. notehead, optional flag, optional augmentation dot) and primitives (e.g. stem, optional beam, etc.).

U+E22C is intended for combination with the other glyphs in the 'Beamed groups of notes' range, which is really intended only for text-based applications, as stated in the 'Implementation notes' for that range (on page 42 of the SMuFL 0.6 specification).

I suspected it, but your clarification is very welcome (in the meantime, I got the 0.7 draft and noticed U+E22C is named "textAugmentationDot", which makes the things clearer).

U+E216 is registered incorrectly in Bravura 0.3. It should be registered such that y=0 crosses the exact centre of the rhythm dot. Thank you for pointing out this mistake, which I will ensure is corrected in the next revision of the font.

Thanks for your feedback, as always.

Thanks to you for the commitment and the support. I was speculating if that registration implied some sophisticated algorithm for dot positioning, but things are now simple and clear!

Maurizio