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Simon Cozens 2022-04-20 16:55:31 +01:00 committed by Behdad Esfahbod
parent 91e2f3b92a
commit af9eb6850a
1 changed files with 70 additions and 19 deletions
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docs/features.dot
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@ -1,6 +1,6 @@
digraph { digraph {
graph [outputorder=edgefirst]; graph [outputorder=edgefirst];
node [shape="record", fontname="Courier-Bold", fontsize=15]; node [shape="record", fontname="Noto Sans Mono SemiBold", fontsize=15];
edge [fontname="Verdana", fontsize=12,labeldistance=7.5 ]; edge [fontname="Verdana", fontsize=12,labeldistance=7.5 ];
fontname="Verdana"; fontname="Verdana";
ranksep=0.02; nodesep=0.5; ranksep=0.02; nodesep=0.5;
@ -10,7 +10,7 @@ subgraph {
preprocessing[style=filled,fillcolor="lightgreen",fontname="Verdana",label="Glyph pre-processing"]; preprocessing[style=filled,fillcolor="lightgreen",fontname="Verdana",label="Glyph pre-processing"];
orthographic[style=filled,fillcolor="lightblue",fontname="Verdana",label="Orthographic Unit Shaping"]; orthographic[style=filled,fillcolor="lightblue",fontname="Verdana",label="Orthographic Unit Shaping"];
reordering[style=filled, fillcolor="lightcoral",fontname="Verdana",label="Reordering group (USE)"]; reordering[style=filled, fillcolor="lightcoral",fontname="Verdana",label="Reordering group (USE)"];
topographic[style=filled,fillcolor="lightgoldenrod",fontname="Verdana",label="Topographical Features"]; topographic[style=filled,fillcolor="lightgoldenrod",fontname="Verdana",label="Topographical Features‡"];
typographic[style=filled,fillcolor="lightpink",fontname="Verdana",label="Typographic Presentation"]; typographic[style=filled,fillcolor="lightpink",fontname="Verdana",label="Typographic Presentation"];
positioning[style=filled,fillcolor="lightsalmon",fontname="Verdana",label="Positioning"]; positioning[style=filled,fillcolor="lightsalmon",fontname="Verdana",label="Positioning"];
preprocessing->reordering->orthographic->topographic->typographic->positioning; preprocessing->reordering->orthographic->topographic->typographic->positioning;
@ -20,8 +20,21 @@ subgraph {
rvrn->decision1; rvrn->decision1;
ltrfeatures [label="{ltra|ltrm}", fillcolor="lightgreen",style="filled"]; ltrfeatures [label="{ltra|ltrm}", fillcolor="lightgreen",style="filled"];
rtlfeatures [label="{rtla|rtlm}", fillcolor="lightgreen",style="filled"]; {
fracfeatures [label="frac|numr|dnom", fillcolor="lightpink",style="filled"]; rtlfeatures [label="{rtla|rtlm¹}", fillcolor="lightgreen",style="filled"];
}
{
rank=same;
fracfeatures [label="frac²|numr³|dnom⁴", fillcolor="lightpink",style="filled"];
fracnotes [fontname="Verdana",shape=plaintext,label=<<table border="0" cellborder="0" cellspacing="0">
<tr><td align="left">¹ rtlm is scoped to characters with a Unicode mirroring property</td></tr>
<tr><td align="left">² frac is scoped to numr + the slash + dnom</td></tr>
<tr><td align="left">³ numr is scoped to all decimal numbers before a U+2044 FRACTION SLASH.</td></tr>
<tr><td align="left">⁴ dnom is scoped to all decimal numbers after a U+2044 FRACTION SLASH.</td></tr>
</table>
>];
}
rand [fillcolor="lightpink",style="filled"]; rand [fillcolor="lightpink",style="filled"];
decision1 -> ltrfeatures [label="Left-to-right"]; decision1 -> ltrfeatures [label="Left-to-right"];
@ -35,7 +48,7 @@ subgraph {
decision2 [shape="diamond", label="Script?",fontname="Verdana"]; decision2 [shape="diamond", label="Script?",fontname="Verdana"];
{rank=same; HARF; notes;} {rank=same; HARF [label="{Harf|HARF}"]; notes;}
rand -> trak -> HARF -> decision2; rand -> trak -> HARF -> decision2;
commonfeatures [shape=none,label=<<table border="0" cellspacing="0"> commonfeatures [shape=none,label=<<table border="0" cellspacing="0">
@ -50,7 +63,10 @@ subgraph {
</tr> </tr>
</table>> </table>>
]; ];
decision3 [shape="diamond", label="Script\ndirection?",fontname="Verdana"]; decision3 [shape="diamond", label="Script\ndirection?",fontname="Verdana"];
BUZZ [label="{Buzz|BUZZ}"];
BUZZ -> commonfeatures -> decision3; BUZZ -> commonfeatures -> decision3;
horizontalfeatures [ horizontalfeatures [
@ -82,7 +98,7 @@ subgraph complexshapers {
subgraph cluster_arabic { subgraph cluster_arabic {
bgcolor="lightyellow" bgcolor="lightyellow"
label="Arabic, Syriac"; label="Arabic, Syriac";
stch [ style="filled", fillcolor="lightgreen",label="ccmp|locl"]; stch [ style="filled", fillcolor="lightgreen",label="stch"];
ccmplocl [ style="filled", label="ccmp|locl", fillcolor="lightgreen"]; ccmplocl [ style="filled", label="ccmp|locl", fillcolor="lightgreen"];
arabicfeatures [label="isol|fina|fin2|fin3|medi|med2|init", style="filled", fillcolor="lightgoldenrod"]; arabicfeatures [label="isol|fina|fin2|fin3|medi|med2|init", style="filled", fillcolor="lightgoldenrod"];
arabicfeatures2 [label="rclt|calt", style="filled",fillcolor="lightpink"]; arabicfeatures2 [label="rclt|calt", style="filled",fillcolor="lightpink"];
@ -95,7 +111,7 @@ mset [fillcolor="lightpink",style="filled"]
subgraph cluster_hangul { subgraph cluster_hangul {
bgcolor="lightyellow" bgcolor="lightyellow"
label="Hangul"; label="Hangul";
hangulfeatures [label="ljmo|vjmo|tjmo", style="filled",fillcolor="lightblue"] hangulfeatures [label="ljmo|vjmo|tjmo", style="filled",fillcolor="lightgoldenrod"]
} }
hangulfeatures->BUZZ:n; hangulfeatures->BUZZ:n;
@ -103,25 +119,47 @@ mset [fillcolor="lightpink",style="filled"]
label="Indic"; label="Indic";
bgcolor="lightyellow" bgcolor="lightyellow"
// Preprocessing // Preprocessing
loclccmpindic [label="locl|ccmp",style=filled,fillcolor="lightgreen"]; loclccmpindic [label="locl†|ccmp†",style=filled,fillcolor="lightgreen"];
node[style=filled,fillcolor="lightgreen"]; node[style=filled,fillcolor="lightgreen"];
nukt [label="nukt†"];
akhn [label="akhn†"];
loclccmpindic->indic_reorder_1->nukt->akhn; loclccmpindic->indic_reorder_1->nukt->akhn;
indic_reorder_1[label="Initial reordering", fontname="Verdana",fillcolor="lightgrey",shape=ellipse,style=filled] indic_reorder_1[label="Initial reordering", fontname="Verdana",fillcolor="lightgrey",shape=ellipse,style=filled]
// Orthographic // Orthographic
node[style=filled,fillcolor="lightblue"] node[style=filled,fillcolor="lightblue"]
rphf [label="rphf⁵"];
rkpf [label="rkpf†"];
pref [label="pref⁶"];
blwf [label="blwf⁷"];
abvf [label="abvf⁸"];
half [label="half⁹"];
pstf [label="pstf⁸"];
vatu [label="vatu†"];
cjct [label="cjct†"];
akhn ->rphf -> rkpf -> pref -> blwf -> abvf -> half -> pstf -> vatu -> cjct; akhn ->rphf -> rkpf -> pref -> blwf -> abvf -> half -> pstf -> vatu -> cjct;
// Typographic presentation // Typographic presentation
indic_typographic[style=filled,fillcolor="lightpink",label="init|pres|abvs|blws|psts|haln"] indic_typographic[style=filled,fillcolor="lightpink",label="init|pres|abvs|blws|psts|haln"]
indic_reorder_2[label="Final reordering",fillcolor="lightgrey",fontname="Verdana", shape=ellipse,style=filled] indic_reorder_2[label="Final reordering",fillcolor="lightgrey",fontname="Verdana", shape=ellipse,style=filled]
cjct->indic_reorder_2->indic_typographic; cjct->indic_reorder_2->indic_typographic;
notes2 [fontname="Verdana",shape=plaintext,style="",label=<<table border="0" cellborder="0" cellspacing="0">
<tr><td align="right">⁵ rphf is scoped to pre-base ra+halant sequences</td></tr>
<tr><td align="right">⁶ pref is scoped to the two glyphs after the base; outputs are reordered</td></tr>
<tr><td align="right">⁷ blwf is usually scoped to the whole syllable, except in Telugu and Kannada where it is post-base</td></tr>
<tr><td align="right">⁸ abvf and pstf are scoped to post-base</td></tr>
<tr><td align="right">⁹ half is scoped to pre-base</td></tr>
</table>
>];
indic_typographic -> notes2 [style=invis];
} }
subgraph cluster_khmer { subgraph cluster_khmer {
label="Khmer"; label="Khmer";
bgcolor="lightyellow" bgcolor="lightyellow"
khmerbasic [style=filled,fillcolor="lightgreen",label="locl|ccmp|pref|bwlf|abvf|pstf|cfar"] khmerbasic [style=filled,fillcolor="lightgreen",label="locl†|ccmp†|pref†|bwlf†|abvf†|pstf†|cfar†"]
khmerother [style=filled,fillcolor="lightpink",label="pres|abvs|blws|psts"] khmerother [style=filled,fillcolor="lightpink",label="pres|abvs|blws|psts"]
khmerbasic -> khmerother -> khmerclig; khmerbasic -> khmerother -> khmerclig;
khmerclig [label="clig",style=filled,fillcolor="lightpink"]; khmerclig [label="clig",style=filled,fillcolor="lightpink"];
@ -130,11 +168,11 @@ mset [fillcolor="lightpink",style="filled"]
subgraph cluster_myanmar { subgraph cluster_myanmar {
label="Myanmar"; label="Myanmar";
bgcolor="lightyellow" bgcolor="lightyellow"
loclccmpmyanmar [label="locl|ccmp",style=filled,fillcolor="lightgreen"]; loclccmpmyanmar [label="locl†|ccmp†",style=filled,fillcolor="lightgreen"];
rphfmymr [label="rphf",style=filled,fillcolor="lightblue"] rphfmymr [label="rphf†",style=filled,fillcolor="lightblue"]
prefmymr [label="pref",style=filled,fillcolor="lightblue"] prefmymr [label="pref†",style=filled,fillcolor="lightblue"]
blwfmymr [label="blwf",style=filled,fillcolor="lightblue"] blwfmymr [label="blwf†",style=filled,fillcolor="lightblue"]
pstfmymr [label="pstf",style=filled,fillcolor="lightblue"] pstfmymr [label="pstf†",style=filled,fillcolor="lightblue"]
myanmarother [label="pres|abvs|blws|psts",style=filled,fillcolor="lightpink"]; myanmarother [label="pres|abvs|blws|psts",style=filled,fillcolor="lightpink"];
reorder_myanmar[label="Reordering", shape=ellipse,style=filled,fontname="Verdana"] reorder_myanmar[label="Reordering", shape=ellipse,style=filled,fontname="Verdana"]
loclccmpmyanmar -> reorder_myanmar-> rphfmymr -> prefmymr -> blwfmymr -> pstfmymr -> myanmarother; loclccmpmyanmar -> reorder_myanmar-> rphfmymr -> prefmymr -> blwfmymr -> pstfmymr -> myanmarother;
@ -143,16 +181,22 @@ mset [fillcolor="lightpink",style="filled"]
subgraph cluster_use { subgraph cluster_use {
label="Universal Shaping Engine" label="Universal Shaping Engine"
bgcolor="lightyellow" bgcolor="lightyellow"
use_preprocessing [style=filled, label="locl|ccmp|nukt|akhn", fillcolor="lightgreen"]; use_preprocessing [style=filled, label="locl†|ccmp†|nukt†|akhn†", fillcolor="lightgreen"];
// Reoredering // Reoredering
rphfuse [label="rphf", style=filled, fillcolor="lightcoral"]; rphfuse [label="rphf¹⁰", style=filled, fillcolor="lightcoral"];
prefuse [label="pref", style=filled, fillcolor="lightcoral"]; prefuse [label="pref¹¹", style=filled, fillcolor="lightcoral"];
// Orthographic // Orthographic
orthographicuse [label="rkrf|abvf|blwf|half|pstf|vatu|cjct", style="filled", fillcolor="lightblue"]; orthographicuse [label="rkrf†|abvf†|blwf†|half†|pstf†|vatu†|cjct†", style="filled", fillcolor="lightblue"];
topographicaluse [label="isol|init|medi|fina", style="filled", fillcolor="lightgoldenrod"]; topographicaluse [label="isol|init|medi|fina", style="filled", fillcolor="lightgoldenrod"];
typographicaluse [label="abvs|blws|haln|pres|psts", style="filled", fillcolor="lightpink"]; typographicaluse [label="abvs|blws|haln|pres|psts", style="filled", fillcolor="lightpink"];
reorder_use[label="Reordering", shape=ellipse,style=filled,fontname="Verdana"] reorder_use[label="Reordering", shape=ellipse,style=filled,fontname="Verdana"]
use_preprocessing -> rphfuse -> prefuse->orthographicuse ->reorder_use -> topographicaluse -> typographicaluse; use_preprocessing -> rphfuse -> prefuse->orthographicuse ->reorder_use -> topographicaluse -> typographicaluse;
notes3 [fontname="Verdana",shape=plaintext,label=<<table border="0" cellborder="0" cellspacing="0">
<tr><td align="left">¹⁰ Outputs are reordered as category R</td></tr>
<tr><td align="left">¹¹ Outputs are reordered to before base</td></tr>
</table>
>];
typographicaluse -> notes3 [style=invis];
} }
} }
@ -170,7 +214,6 @@ mset [fillcolor="lightpink",style="filled"]
decision2->use_preprocessing; decision2->use_preprocessing;
decision2->BUZZ [label=" Hebrew, Thai,\n Lao, other"]; decision2->BUZZ [label=" Hebrew, Thai,\n Lao, other"];
notes [fontname="Verdana",shape=box,label=<<table border="0" cellborder="0" cellspacing="0"> notes [fontname="Verdana",shape=box,label=<<table border="0" cellborder="0" cellspacing="0">
<tr><td align="left"> <tr><td align="left">
<b>Indic</b> scripts are: Bengali, Devanagari, <b>Indic</b> scripts are: Bengali, Devanagari,
@ -205,4 +248,12 @@ Takri, Tibetan, Tifinagh, Tirhuta, Wancho, Zanabazar square,
</td></tr> </td></tr>
</table>>] </table>>]
footnote[fontname="Verdana",label=<<table border="0" cellborder="0" cellspacing="0">
<tr><td align="left">† Feature is scoped to each syllable</td></tr>
<tr><td align="left">‡ All topographic features are scoped based on topographic position</td></tr>
</table>>];
notes3->footnote[style=invis];
} }