kerning for the pairs such as Pr,Fu,Fo,etc

keming_machine.txt

@@ -5,11 +5,11 @@
 
 ### Legends
 #
-# ͞ A·B < unset for lowheight miniscules, as in e
+#  A·B < unset for lowheight miniscules, as in e
 #  |·| < space we don't care
-#――C·D < middle hole for majuscules, as in C
+#  C·D < middle hole for majuscules, as in C
 #  E·F < middle hole for miniscules, as in c
-# ͟ G·H
+#  G·H
 #  ――― < baseline
 #  |·|
 #  J·K
@@ -61,12 +61,14 @@
 #         ` must have a bit unset
 - ͟A͟B͟C͟D͟E͟F͟G͟H͟J͟K͟ ͟ ͟ ͟A͟B͟C͟D͟E͟F͟G͟H͟J͟K͟
 - _@_`___`__ — `_________ # Γe,TJ ; Ye,YJ,Ve,VJ,TA,ΓA,VA,Vʌ,YA,Yʌ,yA,yʌ,/a,/d
-- _@_@___`__ — `___`_@___ # Pɺ but NOT PJ
+- _@_@___`__ — `___`_@___ # Pɺ but NOT Po,PJ
+- _@_@___`__ — `___@_____ # Fo,PJ (always 1 px)
 - ___`_`____ — `___@_`___ # Cꟶ,Kꟶ,Lꟶ,Γꟶ
 - ___`_`____ — `_@___`___ # CꟵ,KꟵ,LꟵ,ΓꟵ
 -----------------------------------------------------
 - _`________ — @_`___`___ # eꞀ,LT ; eY,LY,eV,LV,AT,AꞀ,AY,Ay,λY,λy,a\,b\
-- _`___`_@__ — @_@___`___ # Lꟼ but NOT bꟼ
+- _`___`_@__ — @_@___`___ # Lꟼ but NOT oꟼ,bꟼ
+- _`___@____ — @_@___`___ # oꟼ,bꟼ (always 1 px)
 - _`___@_`__ — __`_`_____ # ⱶƆ,ⱶJ
 - _`_@___`__ — __`_`_____ # ⱵƆ,ⱵJ
 

src/net/torvald/terrarumsansbitmap/gdx/TerrarumSansBitmap.kt

@@ -1359,12 +1359,13 @@ class TerrarumSansBitmap(
         val maskL = glyphProps[prevChar]?.kerningMask
         val maskR = glyphProps[thisChar]?.kerningMask
         return if (glyphProps[prevChar]?.hasKernData == true && glyphProps[thisChar]?.hasKernData == true) {
-            val contraction = if (glyphProps[prevChar]?.isKernYtype == true || glyphProps[thisChar]?.isKernYtype == true) -1 else -2
             kerningRules.forEachIndexed { index, it ->
                 if (it.first.matches(maskL!!) && it.second.matches(maskR!!)) {
-                    println("Kerning rule match #${index+1}: ${prevChar.toChar()}${thisChar.toChar()}, Rule:${it.first} ${it.second}; Contraction: ${-contraction}")
+                    val contraction = if (glyphProps[prevChar]?.isKernYtype == true || glyphProps[thisChar]?.isKernYtype == true) it.yy else it.bb
 
-                    return contraction
+                    println("Kerning rule match #${index+1}: ${prevChar.toChar()}${thisChar.toChar()}, Rule:${it.first} ${it.second}; Contraction: $contraction")
+
+                    return -contraction
                 }
             }
             return 0
@@ -1951,6 +1952,8 @@ print(','.join(a))
             override fun toString() = "C:${careBits.toString(2).padStart(16,'0')}-R:${ruleBits.toString(2).padStart(16,'0')}"
         }
 
+        private data class Kern(val first: RuleMask, val second: RuleMask, val bb: Int = 2, val yy: Int = 1)
+
         /**
          * Legend: _ dont care
          *         @ must have a bit set
@@ -1967,15 +1970,17 @@ print(','.join(a))
          * J·K
          */
         private val kerningRules = arrayOf(
-            RuleMask("_@_`___`__") to RuleMask("`_________"),
+                Kern(RuleMask("_@_`___`__"),RuleMask("`_________")),
-            RuleMask("_@_@___`__") to RuleMask("`___`_@___"),
+                Kern(RuleMask("_@_@___`__"),RuleMask("`___`_@___")),
-            RuleMask("___`_`____") to RuleMask("`___@_`___"),
+                Kern(RuleMask("_@_@___`__"),RuleMask("`___@_____"),1,1),
-            RuleMask("___`_`____") to RuleMask("`_@___`___"),
+                Kern(RuleMask("___`_`____"),RuleMask("`___@_`___")),
+                Kern(RuleMask("___`_`____"),RuleMask("`_@___`___")),
 
-            RuleMask("_`________") to RuleMask("@_`___`___"),
+                Kern(RuleMask("_`________"),RuleMask("@_`___`___")),
-            RuleMask("_`___`_@__") to RuleMask("@_@___`___"),
+                Kern(RuleMask("_`___`_@__"),RuleMask("@_@___`___")),
-            RuleMask("_`___@_`__") to RuleMask("__`_`_____"),
+                Kern(RuleMask("_`___@____"),RuleMask("@_@___`___"),1,1),
-            RuleMask("_`_@___`__") to RuleMask("__`_`_____"),
+                Kern(RuleMask("_`___@_`__"),RuleMask("__`_`_____")),
+                Kern(RuleMask("_`_@___`__"),RuleMask("__`_`_____")),
         )
 
         // End of the Keming Machine