diff --git a/docs/features.dot b/docs/features.dot new file mode 100644 index 000000000..2d4eab7ec --- /dev/null +++ b/docs/features.dot @@ -0,0 +1,208 @@ +digraph { + graph [outputorder=edgefirst]; + node [shape="record", fontname="Courier-Bold", fontsize=15]; + edge [fontname="Verdana", fontsize=12,labeldistance=7.5 ]; + fontname="Verdana"; + ranksep=0.02; nodesep=0.5; + +subgraph { + ranksep="0.02 equally"; + preprocessing[style=filled,fillcolor="lightgreen",fontname="Verdana",label="Glyph pre-processing"]; + orthographic[style=filled,fillcolor="lightblue",fontname="Verdana",label="Orthographic Unit Shaping"]; + reordering[style=filled, fillcolor="lightcoral",fontname="Verdana",label="Reordering group (USE)"]; + topographic[style=filled,fillcolor="lightgoldenrod",fontname="Verdana",label="Topographical Features"]; + typographic[style=filled,fillcolor="lightpink",fontname="Verdana",label="Typographic Presentation"]; + positioning[style=filled,fillcolor="lightsalmon",fontname="Verdana",label="Positioning"]; + preprocessing->reordering->orthographic->topographic->typographic->positioning; +} + + decision1 [shape="diamond", label="Script\ndirection?",fontname="Verdana"]; + rvrn->decision1; + + 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"]; + rand [fillcolor="lightpink",style="filled"]; + + decision1 -> ltrfeatures [label="Left-to-right"]; + decision1 -> rtlfeatures [label="Right-to-left"]; + + decision1 -> fracfeatures [label="Other"]; + + ltrfeatures -> fracfeatures; + rtlfeatures -> fracfeatures; + fracfeatures->rand; + + decision2 [shape="diamond", label="Script?",fontname="Verdana"]; + +{rank=same; HARF; notes;} + rand -> trak -> HARF -> decision2; + + commonfeatures [shape=none,label=< + + + + + + + + + +
abvmblwmccmploclmarkmkmkrlig
> + ]; + decision3 [shape="diamond", label="Script\ndirection?",fontname="Verdana"]; + BUZZ -> commonfeatures -> decision3; + + horizontalfeatures [ + shape=none,label=< + + + + + + + +
calt (not Hangul)
clig (not Khmer)
curs
dist
kern
liga (not Khmer)
rclt
> + ]; + vert [label="vert",style=filled,fillcolor="lightpink"]; + + decision3 -> horizontalfeatures [label="Horizontal"]; + decision3 -> vert [label="Vertical"]; + + discretionary [label="User-selected\ndiscretionary\nfeatures",fontname="Verdana"]; + + horizontalfeatures -> discretionary; + vert -> discretionary; + + decision2->stch; + + BUZZ; + +subgraph complexshapers { + subgraph cluster_arabic { + bgcolor="lightyellow" + label="Arabic, Syriac"; + stch [ style="filled", fillcolor="lightgreen",label="ccmp|locl"]; + ccmplocl [ style="filled", label="ccmp|locl", fillcolor="lightgreen"]; + arabicfeatures [label="isol|fina|fin2|fin3|medi|med2|init", style="filled", fillcolor="lightgoldenrod"]; + arabicfeatures2 [label="rclt|calt", style="filled",fillcolor="lightpink"]; +rlig[style="filled",fillcolor="lightpink"]; +mset [fillcolor="lightpink",style="filled"] + stch->ccmplocl->arabicfeatures->rlig->arabicfeatures2->mset; + } + mset->BUZZ:n; + + subgraph cluster_hangul { + bgcolor="lightyellow" + label="Hangul"; + hangulfeatures [label="ljmo|vjmo|tjmo", style="filled",fillcolor="lightblue"] + } + hangulfeatures->BUZZ:n; + + subgraph cluster_indic { + label="Indic"; + bgcolor="lightyellow" + // Preprocessing + loclccmpindic [label="locl|ccmp",style=filled,fillcolor="lightgreen"]; + node[style=filled,fillcolor="lightgreen"]; + loclccmpindic->indic_reorder_1->nukt->akhn; + indic_reorder_1[label="Initial reordering", fontname="Verdana",fillcolor="lightgrey",shape=ellipse,style=filled] + + // Orthographic + node[style=filled,fillcolor="lightblue"] + akhn ->rphf -> rkpf -> pref -> blwf -> abvf -> half -> pstf -> vatu -> cjct; + // Typographic presentation + 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] + cjct->indic_reorder_2->indic_typographic; + } + + subgraph cluster_khmer { + label="Khmer"; + bgcolor="lightyellow" + + khmerbasic [style=filled,fillcolor="lightgreen",label="locl|ccmp|pref|bwlf|abvf|pstf|cfar"] + khmerother [style=filled,fillcolor="lightpink",label="pres|abvs|blws|psts"] + khmerbasic -> khmerother -> khmerclig; + khmerclig [label="clig",style=filled,fillcolor="lightpink"]; + } + + subgraph cluster_myanmar { + label="Myanmar"; + bgcolor="lightyellow" + loclccmpmyanmar [label="locl|ccmp",style=filled,fillcolor="lightgreen"]; + rphfmymr [label="rphf",style=filled,fillcolor="lightblue"] + prefmymr [label="pref",style=filled,fillcolor="lightblue"] + blwfmymr [label="blwf",style=filled,fillcolor="lightblue"] + pstfmymr [label="pstf",style=filled,fillcolor="lightblue"] + myanmarother [label="pres|abvs|blws|psts",style=filled,fillcolor="lightpink"]; + reorder_myanmar[label="Reordering", shape=ellipse,style=filled,fontname="Verdana"] + loclccmpmyanmar -> reorder_myanmar-> rphfmymr -> prefmymr -> blwfmymr -> pstfmymr -> myanmarother; + } + + subgraph cluster_use { + label="Universal Shaping Engine" + bgcolor="lightyellow" + use_preprocessing [style=filled, label="locl|ccmp|nukt|akhn", fillcolor="lightgreen"]; + // Reoredering + rphfuse [label="rphf", style=filled, fillcolor="lightcoral"]; + prefuse [label="pref", style=filled, fillcolor="lightcoral"]; + // Orthographic + orthographicuse [label="rkrf|abvf|blwf|half|pstf|vatu|cjct", style="filled", fillcolor="lightblue"]; + topographicaluse [label="isol|init|medi|fina", style="filled", fillcolor="lightgoldenrod"]; + typographicaluse [label="abvs|blws|haln|pres|psts", style="filled", fillcolor="lightpink"]; + reorder_use[label="Reordering", shape=ellipse,style=filled,fontname="Verdana"] + use_preprocessing -> rphfuse -> prefuse->orthographicuse ->reorder_use -> topographicaluse -> typographicaluse; + } + +} + + indic_typographic->BUZZ:n; + typographicaluse->BUZZ:n; + khmerclig -> BUZZ:n; + myanmarother -> BUZZ:n; + + + decision2->hangulfeatures; + decision2->loclccmpindic; + decision2->khmerbasic; + decision2->loclccmpmyanmar; + decision2->use_preprocessing; + decision2->BUZZ [label=" Hebrew, Thai,\n Lao, other"]; + + +notes [fontname="Verdana",shape=box,label=< + + + + + + + + + +
+Indic scripts are: Bengali, Devanagari, + Gujarati, Gurmukhi, Kannada, + Malayalam, Oriya, Tamil, + Telugu, Sinhala +
+USE scripts are: + Adlam, Ahom, Balinese, Batak, Bhaiksuki, Brahmi, Buginese, + Buhid, Chakma, Cham, Chorasmian, Dives Akuru, Dogra, Duployan, +
+Egyptian hieroglyphs, Elymaic, Grantha, Gunjala Ggondi, Hanifi Rohingya, + Hanunoo, Javanese, Kaithi, Kayah li, Kharoshthi, Khojki, +
+Khudawadi, Lepcha, Limbu, Mahajani, Makasar, Mandaic, Manichaean, + Marchen, Masaram Gondi, Medefaidrin, Meetei Mayek, Miao, Modi, +
+Mongolian, Multani, Nandinagari, Newa, Nko, Nyiakeng Puachue Hmong, + Old Sogdian, Pahawh Hmong, Phags Pa, Psalter Pahlavi, Rejang, +
+Saurashtra, Sharada, Siddham, Sogdian, Soyombo, Sundanese, + Syloti Nagri, Tagalog, Tagbanwa, Tai Le, Tai Tham, Tai Viet, +
+Takri, Tibetan, Tifinagh, Tirhuta, Wancho, Zanabazar square, +
>] +}