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Incorrect stroke type for strokes 5 & 8 in 066dc.svg (曜): labeled as hooked ㇆ instead of ㇕ or ㇕/㇆ #536
Description
Summary
I am developing a mobile application for Japanese kanji handwriting practice that uses KanjiVG as its reference data
source for stroke order, geometry, and stroke classification.
I encountered an issue with 曜 (066dc.svg): strokes 5 and 8 are marked with kvg:type="㇆" (horizontal-turning
hook / 横折鉤), which causes handwriting recognition algorithms to expect a hook. However, neither standard Japanese
handwriting nor the SVG geometry in 066dc.svg itself has a hook for these strokes.
Problem Details
In kanji/066dc.svg, strokes 5 and 8 represent the two outer folding strokes of the 羽 radical inside the top of
翟:
<path id="kvg:066dc-s5" kvg:type="㇆"
d="M41.5,16.5c1.5,0.75,2.5,0.75,4.75,0.5S56.5,15.5,58,15.25s3.5,1.5,3.5,3c0,1.22-0.17,14.07-0.23,20c-0.01,1.35-0.02,2
.33-0.02,2.75"/>
...
<path id="kvg:066dc-s8" kvg:type="㇆"
d="M70.75,14.75c1.5,0.75,2.75,1,5,0.75s12.5-1.75,14-2s3.5,1.5,3.5,3c0,1.19-0.16,13.38-0.22,19.5C93.01,37.6,93,38.78,9
3,39.25"/>- Path geometry has no hook:
Both paths end straight down without any upward or inward hook flick (c-0.01,1.35-0.02,2.33-0.02,2.75 for s5, and C93.
01,37.6,93,38.78,93,39.25 for s8). - Japanese handwriting standard:
Unlike the standalone radical 羽, when 羽 is positioned as the top crown in 翟 (as in 曜, 濯, 躍), the standard
Japanese stroke (e.g. in school textbooks / 教科書体) is 横折 (horizontal-turn, stopping without a hook / はねない). - Impact:
Applications that validate stroke terminal features based on kvg:type reject valid handwritten input because they
expect a required hook that users naturally do not (and should not) draw.
Existing Precedents in KanjiVG
Other kanji sharing the exact same 翟 phonetic element have already been updated in KanjiVG to reflect this variance
using kvg:type="㇕/㇆":
• 06fef.svg (濯):
• Stroke 4: <path id="kvg:06fef-s4" kvg:type="㇕/㇆" .../>
• Stroke 7: <path id="kvg:06fef-s7" kvg:type="㇕/㇆" .../>
• 08e8d.svg (躍):
• Stroke 11: <path id="kvg:08e8d-s11" kvg:type="㇕/㇆" .../>
• Stroke 14: <path id="kvg:08e8d-s14" kvg:type="㇕/㇆" .../>
(Note: 08000.svg (耀) appears to share this same legacy ㇆ tagging for strokes 7 & 10 and could be updated similarly).
Proposed Fix
- In kanji/066dc.svg (曜):
• Update kvg:066dc-s5: change kvg:type="㇆" to kvg:type="㇕/㇆"
• Update kvg:066dc-s8: change kvg:type="㇆" to kvg:type="㇕/㇆" - In kanji/08000.svg (耀):
• Update kvg:08000-s7: change kvg:type="㇆" to kvg:type="㇕/㇆"
• Update kvg:08000-s10: change kvg:type="㇆" to kvg:type="㇕/㇆"
Thank you!
Activity