typewriter accepting new tagging system

CONTRIBUTING.md

@@ -87,8 +87,9 @@ MSB for each word must be set to indicate the value is being used.
 
 -= NOTE =-
 
-This encoding involves one HACK: using 0th diacritics' X-anchor pos as a type selector
+The code has remnants of one old HACK: using 0th diacritics' X-anchor pos as a type selector
-This hack applies only when write-on-top bit is set.
+This hack applied only when write-on-top bit is set. Relevant codes are currently commented out instead of
+being completely removed for future debugging.
 Interpretation:
     DIA_OVERLAY = 1
     DIA_JOINER = 2

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

@@ -906,7 +906,7 @@ class TerrarumSansBitmap(
                     extraWidth = thisProp.nudgeX // NOTE: sign is flipped!
                 }
                 // FIXME HACK: using 0th diacritics' X-anchor pos as a type selector
-                else if (thisProp.writeOnTop && thisProp.diacriticsAnchors[0].x == GlyphProps.DIA_JOINER) {
+                /*else if (thisProp.writeOnTop && thisProp.diacriticsAnchors[0].x == GlyphProps.DIA_JOINER) {
                     posXbuffer[charIndex] = when (itsProp.alignWhere) {
                         GlyphProps.ALIGN_RIGHT ->
                             posXbuffer[nonDiacriticCounter] + W_VAR_INIT + alignmentOffset
@@ -916,7 +916,7 @@ class TerrarumSansBitmap(
                             posXbuffer[nonDiacriticCounter] + itsProp.width + alignmentOffset
 
                     }
-                }
+                }*/
                 else {
                     // set X pos according to alignment information
                     posXbuffer[charIndex] = when (thisProp.alignWhere) {
@@ -1372,7 +1372,7 @@ class TerrarumSansBitmap(
                 if (it.first.matches(maskL!!) && it.second.matches(maskR!!)) {
                     val contraction = if (glyphProps[prevChar]?.isKernYtype == true || glyphProps[thisChar]?.isKernYtype == true) it.yy else it.bb
 
-                    dbgprn("Kerning rule match #${index+1}: ${prevChar.toChar()}${thisChar.toChar()}, Rule:${it.first.s} ${it.second.s}; Contraction: $contraction")
+//                    dbgprn("Kerning rule match #${index+1}: ${prevChar.toChar()}${thisChar.toChar()}, Rule:${it.first.s} ${it.second.s}; Contraction: $contraction")
 
                     return -contraction
                 }
@@ -1380,71 +1380,6 @@ class TerrarumSansBitmap(
             return 0
         }
         else 0
-        /*else if (prevChar in lowHeightLetters) {
-            return if (thisChar in kernTees) kernTee // lh - T
-            else if (thisChar in kernYees) kernYee   // lh - Y
-            else 0
-        }
-        else if (prevChar in kernElls) {
-            return if (thisChar in kernTees) kernTee // L - T
-            else if (thisChar in kernVees) kernYee   // L - V
-            else if (thisChar in kernYees) kernYee   // L - Y
-            else 0
-        }
-        else if (prevChar in kernTees) {
-            return if (thisChar in lowHeightLetters) kernTee // T - lh
-            else if (thisChar in kernJays) kernTee           // T - J
-            else if (thisChar in kernAyes) kernYee           // T - A
-            else if (thisChar in kernDees) kernTee           // T - d
-            else 0
-        }
-        else if (prevChar in kernYees) {
-            return if (thisChar in lowHeightLetters) kernYee // Y - lh
-            else if (thisChar in kernAyes) kernYee           // Y - A
-            else if (thisChar in kernJays) kernYee           // Y - J
-            else if (thisChar in kernDees) kernYee           // Y - d
-            else 0
-        }
-        else if (prevChar in kernAyes) {
-            return if (thisChar in kernVees) kernAV  // A - V
-            else if (thisChar in kernTees) kernAV    // A - T
-            else if (thisChar in kernYees) kernYee   // A - Y
-            else 0
-        }
-        else if (prevChar in kernVees) {
-            return if (thisChar in kernAyes) kernAV  // V - A
-            else if (thisChar in kernJays) kernAV    // V - J
-            else if (thisChar in kernDees) kernAV    // V - d
-            else 0
-        }
-        else if (prevChar in kernGammas) {
-            return if (thisChar in kernAyes) kernYee       // Γ - Α
-            else if (thisChar in lowHeightLetters) kernTee // Γ - lh
-            else if (thisChar in kernJays) kernTee         // Γ - J
-            else if (thisChar in kernDees) kernTee         // Γ - d
-            else 0
-        }
-        else if (prevChar in kernBees) {
-            return if (thisChar in kernTees) kernTee // b - T
-            else if (thisChar in kernYees) kernYee   // b - Y
-            else 0
-        }
-        else if (prevChar in kernLowVees) {
-            return if (thisChar in kernTees) kernTee
-            else if (thisChar in kernLowLambdas) kernAVlow
-            else 0
-        }
-        else if (prevChar in kernLowLambdas) {
-            return if (thisChar in kernTees) kernTee
-            else if (thisChar in kernLowVees) kernAVlow
-            else 0
-        }
-        else if (prevChar in slashes) {
-            return if (thisChar in kernDees || thisChar in lowHeightLetters) kernSlash // / - d
-            else if (thisChar in slashes) kernDoubleSlash
-            else 0
-        }
-        else 0*/
     }
 
     companion object {

src/net/torvald/terrarumtypewriterbitmap/gdx/TerrarumTypewriterBitmap.kt

@@ -223,12 +223,12 @@ class TerrarumTypewriterBitmap(
             }
 
             val nudgingBits = pixmap.getPixel(codeStartX, codeStartY + 10).tagify()
-            val nudgeX = nudgingBits.ushr(16).toByte().toInt() // signed 8-bit int
+            val nudgeX = nudgingBits.ushr(24).toByte().toInt() // signed 8-bit int
-            val nudgeY = nudgingBits.ushr(8).toByte().toInt() // signed 8-bit int
+            val nudgeY = nudgingBits.ushr(16).toByte().toInt() // signed 8-bit int
 
             val diacriticsAnchors = (0..5).map {
-                val yPos = 11 + (it / 3)
+                val yPos = 11 + (it / 3) * 2
-                val shift = (2 - (it % 3)) * 8
+                val shift = (3 - (it % 3)) * 8
                 val yPixel = pixmap.getPixel(codeStartX, codeStartY + yPos).tagify()
                 val xPixel = pixmap.getPixel(codeStartX, codeStartY + yPos + 1).tagify()
                 val y = (yPixel ushr shift) and 127
@@ -239,14 +239,15 @@ class TerrarumTypewriterBitmap(
                 DiacriticsAnchor(it, x, y, xUsed, yUsed)
             }.toTypedArray()
 
-            val alignWhere = (11..12).fold(0) { acc, y -> acc or ((pixmap.getPixel(codeStartX, codeStartY + y).and(255) != 0).toInt() shl y) }
+            val alignWhere = (0..1).fold(0) { acc, y -> acc or ((pixmap.getPixel(codeStartX, codeStartY + y + 15).and(255) != 0).toInt() shl y) }
 
-            val writeOnTop = pixmap.getPixel(codeStartX, codeStartY + 13).and(255) != 0
+            val writeOnTop = pixmap.getPixel(codeStartX, codeStartY + 17).and(255) != 0
 
-            val stackWhere = (14..15).fold(0) { acc, y -> acc or ((pixmap.getPixel(codeStartX, codeStartY + y).and(255) != 0).toInt() shl y) }
+            val stackWhere = (0..1).fold(0) { acc, y -> acc or ((pixmap.getPixel(codeStartX, codeStartY + y + 18).and(255) != 0).toInt() shl y) }
 
             glyphProps[code] = GlyphProps(width, isLowHeight, nudgeX, nudgeY, diacriticsAnchors, alignWhere, writeOnTop, stackWhere, GlyphProps.DEFAULT_EXTINFO, hasKernData, isKernYtype, kerningMask)
-//            if (code < 256) dbgprn("${code.charInfo()} width: $width, tags: ${glyphProps[code]}")
+
+//            if (nudgingBits != 0) println("${code.charInfo()} nudgeX=$nudgeX, nudgeY=$nudgeY, nudgingBits=0x${nudgingBits.toString(16)}")
 
             // extra info
             val extCount = glyphProps[code]?.requiredExtInfoCount() ?: 0
@@ -439,7 +440,7 @@ class TerrarumTypewriterBitmap(
 
 
                 if (!thisProp.writeOnTop) {
-                    posXbuffer[charIndex] = thisProp.nudgeX +
+                    posXbuffer[charIndex] = -thisProp.nudgeX +
                             when (itsProp.alignWhere) {
                                 GlyphProps.ALIGN_RIGHT ->
                                     posXbuffer[nonDiacriticCounter] + TerrarumSansBitmap.W_VAR_INIT + alignmentOffset + interchar + kerning + extraWidth
@@ -453,7 +454,7 @@ class TerrarumTypewriterBitmap(
 
                     stackUpwardCounter = 0
                     stackDownwardCounter = 0
-                    extraWidth = -thisProp.nudgeX // NOTE: sign is flipped!
+                    extraWidth = thisProp.nudgeX // NOTE: sign is flipped!
                 }
                 else if (thisProp.writeOnTop && thisProp.diacriticsAnchors[0].x == GlyphProps.DIA_JOINER) {
                     posXbuffer[charIndex] = when (itsProp.alignWhere) {