From 80a7582df6567e87fe2ba555eef9b671e3efc108 Mon Sep 17 00:00:00 2001
From: Koichi KAMICHI <kamichi@fonts.jp>
Date: Sat, 30 Jun 2007 02:31:15 +0000
Subject: [PATCH] Added some comments.

---
 engine/kagecd.js |   44 ++++++++++++------------
 engine/kagedf.js |  100 ++++++++++++++++++++++++++++++++++++++++++++++++++----
 2 files changed, 116 insertions(+), 28 deletions(-)

diff --git a/engine/kagecd.js b/engine/kagecd.js
index 9d69aed..a30ac26 100755
--- a/engine/kagecd.js
+++ b/engine/kagecd.js
@@ -1,3 +1,5 @@
+// may be it can join 3curve and 4curve. the difference is may be only calculating x,y,ix,iy
+
 function cdDrawBezier(kage, polygons, x1, y1, x2, y2, x3, y3, x4, y4, a1, a2){
   var rad, t;
   var x, y, v;
@@ -15,7 +17,7 @@ function cdDrawBezier(kage, polygons, x1, y1, x2, y2, x3, y3, x4, y4, a1, a2){
       delta = -1 * kage.kMinWidthY * 0.5;
       break;
     case 1:
-    case 2:
+    case 2: // must be 32
     case 6:
     case 22:
       delta = 0;
@@ -49,9 +51,9 @@ function cdDrawBezier(kage, polygons, x1, y1, x2, y2, x3, y3, x4, y4, a1, a2){
     case 8:
     case 7:
     case 9:
-    case 15:
-    case 14:
-    case 17:
+    case 15: // it can change to 15->5
+    case 14: // it can change to 14->4
+    case 17: // no need
     case 5:
       delta = 0;
       break;
@@ -244,7 +246,7 @@ function cdDrawBezier(kage, polygons, x1, y1, x2, y2, x3, y3, x4, y4, a1, a2){
     XX = Math.cos(rad) * v;
     XY = Math.sin(rad) * v;
     
-    if(a2 == 1 || a2 == 8 || a2 == 15){ //the last filled circle
+    if(a2 == 1 || a2 == 8 || a2 == 15){ //the last filled circle ... it can change to 15->5
       if(x3 == x4){
         poly = Polygon();
         poly.push(x4 - kage.kMinWidthT, y4);
@@ -293,7 +295,7 @@ function cdDrawBezier(kage, polygons, x1, y1, x2, y2, x3, y3, x4, y4, a1, a2){
       }
     }
     
-    if(a2 == 15){ //jump up
+    if(a2 == 15){ //jump up ... it can change to 15->5
       if(y3 == y4){
         poly = new Polygon();
         poly.push(x4, y4 - kage.kMinWidthT + 1);
@@ -315,7 +317,7 @@ function cdDrawBezier(kage, polygons, x1, y1, x2, y2, x3, y3, x4, y4, a1, a2){
       }
     }
     
-    if(a2 == 14){ //jump to left, allways go left
+    if(a2 == 14){ //jump to left, allways go left ... it can change to 14->4
       poly = new Polygon();
       poly.push(x4, y4);
       poly.push(x4, y4 - kage.kMinWidthT);
@@ -485,7 +487,7 @@ function cdDrawCurve(kage, polygons, x1, y1, x2, y2, x3, y3, a1, a2){
       delta = -1 * kage.kMinWidthY * 0.5;
       break;
     case 1:
-    case 2:
+    case 2: // ... must be 32
     case 6:
     case 22:
       delta = 0;
@@ -518,9 +520,9 @@ function cdDrawCurve(kage, polygons, x1, y1, x2, y2, x3, y3, a1, a2){
     case 1:
     case 7:
     case 9:
-    case 15:
-    case 14:
-    case 17:
+    case 15: // it can change to 15->5
+    case 14: // it can change to 14->4
+    case 17: // no need
     case 5:
       delta = 0;
       break;
@@ -640,7 +642,7 @@ function cdDrawCurve(kage, polygons, x1, y1, x2, y2, x3, y3, a1, a2){
         }
       }
       else{ //bottom to up
-        if(x1 == x2){ //is it right?
+        if(x1 == x2){ //is it right? ... no need
           poly = new Polygon();
           poly.push(x1 - kage.kMinWidthT, y1);
           poly.push(x1 + kage.kMinWidthT, y1);
@@ -720,7 +722,7 @@ function cdDrawCurve(kage, polygons, x1, y1, x2, y2, x3, y3, a1, a2){
     XX = Math.cos(rad) * v;
     XY = Math.sin(rad) * v;
     
-    if(a2 == 1 || a2 == 8 || a2 == 15){ //the last filled circle
+    if(a2 == 1 || a2 == 8 || a2 == 15){ //the last filled circle ... it can change 15->5
       if(x2 == x3){
         poly = new Polygon();
         poly.push(x3 - kage.kMinWidthT, y3);
@@ -752,7 +754,7 @@ function cdDrawCurve(kage, polygons, x1, y1, x2, y2, x3, y3, a1, a2){
       }
     }
     
-    if(a2 == 9 || (a1 == 7 && a2 == 0)){ // Math.sinnyu & L2RD Harai
+    if(a2 == 9 || (a1 == 7 && a2 == 0)){ // Math.sinnyu & L2RD Harai ... no need for a2=9
       if(y2 == y3){
         poly = new Polygon();
         poly.push(x3, y3 + kage.kMinWidthT * kage.kL2RDfatten);
@@ -770,7 +772,7 @@ function cdDrawCurve(kage, polygons, x1, y1, x2, y2, x3, y3, a1, a2){
       }
     }
     
-    if(a2 == 15){ //jump up
+    if(a2 == 15){ //jump up ... it can change 15->5
       if(y2 == y3){
         poly = new Polygon();
         poly.push(x3, y3 - kage.kMinWidthT + 1);
@@ -792,7 +794,7 @@ function cdDrawCurve(kage, polygons, x1, y1, x2, y2, x3, y3, a1, a2){
       }
     }
     
-    if(a2 == 14){ //jump to left, allways go left
+    if(a2 == 14){ //jump to left, allways go left ... it can change 14->4
       poly = new Polygon();
       poly.push(x3, y3);
       poly.push(x3, y3 - kage.kMinWidthT);
@@ -969,7 +971,7 @@ function cdDrawLine(kage, polygons, tx1, ty1, tx2, ty2, ta1, ta2){
         poly.set(0, x1 + kage.kMinWidthT, y1 + kage.kMinWidthY / 2);
         break;
       case 1:
-      case 6:
+      case 6: //... no need
       case 22:
         poly.set(3, x1 - kage.kMinWidthT, y1);
         poly.set(0, x1 + kage.kMinWidthT, y1);
@@ -986,7 +988,7 @@ function cdDrawLine(kage, polygons, tx1, ty1, tx2, ty2, ta1, ta2){
       
       switch(a2){
       case 0:
-        if(a1 == 6){ //KAGI's tail
+        if(a1 == 6){ //KAGI's tail ... no need
           poly.set(2, x2 - kage.kMinWidthT, y2);
           poly.set(1, x2 + kage.kMinWidthT, y2);
         }
@@ -1033,7 +1035,7 @@ function cdDrawLine(kage, polygons, tx1, ty1, tx2, ty2, ta1, ta2){
         polygons.push(poly);
       }
       
-      if((a1 == 6 && a2 == 0) || a2 == 1){ //KAGI NO YOKO BOU NO SAIGO NO MARU
+      if((a1 == 6 && a2 == 0) || a2 == 1){ //KAGI NO YOKO BOU NO SAIGO NO MARU ... no need only used at 1st=yoko
         poly = new Polygon();
         poly.push(x2 - kage.kMinWidthT, y2);
         poly.push(x2 - kage.kMinWidthT * 0.6, y2 + kage.kMinWidthT * 0.6);
@@ -1053,7 +1055,7 @@ function cdDrawLine(kage, polygons, tx1, ty1, tx2, ty2, ta1, ta2){
         poly.push(x1, y1 + kage.kMinWidthT);
         polygons.push(poly);
         
-        if(a2 == 1 || a2 == 0 || a2 == 5){
+        if(a2 == 1 || a2 == 0 || a2 == 5){ // no need a2=1
           //KAGI NO YOKO BOU NO SAIGO NO MARU
           poly = new Polygon();
           poly.push(x2, y2 - kage.kMinWidthT);
@@ -1194,7 +1196,7 @@ function cdDrawLine(kage, polygons, tx1, ty1, tx2, ty2, ta1, ta2){
                      y2 + Math.cos(rad) * kage.kMinWidthT * v + kage.kMinWidthT * 0.5 * Math.sin(rad) * v);
           }
           break;
-        case 1:
+        case 1: // is needed?
         case 5:
           poly.set(1, x2 + Math.sin(rad) * kage.kMinWidthT * v, y2 - Math.cos(rad) * kage.kMinWidthT * v);
           poly.set(2, x2 - Math.sin(rad) * kage.kMinWidthT * v, y2 + Math.cos(rad) * kage.kMinWidthT * v);
diff --git a/engine/kagedf.js b/engine/kagedf.js
index 486ac99..8e0232e 100755
--- a/engine/kagedf.js
+++ b/engine/kagedf.js
@@ -3,7 +3,7 @@ function dfDrawFont(kage, polygons, a1, a2, a3, x1, y1, x2, y2, x3, y3, x4, y4){
   var rad;
   
   if(kage.kShotai == kage.kMincho){
-    switch(a1 % 100){
+    switch(a1 % 100){ // ... no need to divide
     case 0:
       break;
     case 1:
@@ -13,7 +13,7 @@ function dfDrawFont(kage, polygons, a1, a2, a3, x1, y1, x2, y2, x3, y3, x4, y4){
           tx1 = x2;
           ty1 = y2 - kage.kMage * v;
         }
-        else if(y1 == y2){
+        else if(y1 == y2){ // ... no need
           if(x1 < x2){ v = 1; } else{ v = -1; }
           tx1 = x2 - kage.kMage * v;
           ty1 = y2;
@@ -32,7 +32,7 @@ function dfDrawFont(kage, polygons, a1, a2, a3, x1, y1, x2, y2, x3, y3, x4, y4){
       }
       break;
     case 2:
-    case 12:
+    //case 12: // ... no need
       if(a3 == 4){
         if(x2 == x3){
           tx1 = x3;
@@ -94,8 +94,8 @@ function dfDrawFont(kage, polygons, a1, a2, a3, x1, y1, x2, y2, x3, y3, x4, y4){
         }
         tx3 = x3 - kage.kMage;
         ty3 = y3;
-        tx4 = x3 + kage.kMage * 0.5;
-        ty4 = y3 - kage.kMage * 2;
+        tx4 = x3 + kage.kMage * 0.5; // ... not used
+        ty4 = y3 - kage.kMage * 2; // ... not used
         
         cdDrawLine(kage, polygons, x1, y1, tx1, ty1, a2, 1);
         cdDrawCurve(kage, polygons, tx1, ty1, x2, y2, tx2, ty2, 1, 1);
@@ -139,6 +139,92 @@ function dfDrawFont(kage, polygons, a1, a2, a3, x1, y1, x2, y2, x3, y3, x4, y4){
         cdDrawLine(kage, polygons, tx2, ty2, x3, y3, 6, a3); // bolder by force
       }
       break;
+    case 12:
+      cdDrawCurve(kage, polygons, x1, y1, x2, y2, x3, y3, a2, 1);
+      cdDrawLine(kage, polygons, x3, y3, x4, y4, 6, a3);
+      break;
+    case 13:
+rate = 6;
+      if(a3 == 5){
+        if(x1 == x2){
+          if(y1 < y2){ v = 1; } else{ v = -1; }
+          tx1 = x2;
+          ty1 = y2 - kage.kMage * v * rate;
+        }
+        else if(y1 == y2){
+          if(x1 < x2){ v = 1; } else{ v = -1; }
+          tx1 = x2 - kage.kMage * v * rate;
+          ty1 = y2;
+        }
+        else{
+          rad = Math.atan((y2 - y1) / (x2 - x1));
+          if(x1 < x2){ v = 1; } else{ v = -1; }
+          tx1 = x2 - kage.kMage * Math.cos(rad) * v * rate;
+          ty1 = y2 - kage.kMage * Math.sin(rad) * v * rate;
+        }
+        if(x2 == x3){
+          if(y2 < y3){ v = 1; } else{ v = -1; }
+          tx2 = x2;
+          ty2 = y2 + kage.kMage * v * rate;
+        }
+        else if(y2 == y3){
+          if(x2 < x3){ v = 1; } else { v = -1; }
+          tx2 = x2 + kage.kMage * v * rate;
+          ty2 = y2;
+        }
+        else{
+          rad = Math.atan((y3 - y2) / (x3 - x2));
+          if(x2 < x3){ v = 1; } else{ v = -1; }
+          tx2 = x2 + kage.kMage * Math.cos(rad) * v * rate;
+          ty2 = y2 + kage.kMage * Math.sin(rad) * v * rate;
+        }
+        tx3 = x3 - kage.kMage;
+        ty3 = y3;
+        tx4 = x3 + kage.kMage * 0.5; // ... not used
+        ty4 = y3 - kage.kMage * 2; // ... not used
+        
+        cdDrawLine(kage, polygons, x1, y1, tx1, ty1, a2, 1);
+        cdDrawCurve(kage, polygons, tx1, ty1, x2, y2, tx2, ty2, 1, 1);
+        cdDrawLine(kage, polygons, tx2, ty2, tx3, ty3, 6, 5); // bolder by force
+      }
+      else{
+        if(x1 == x2){
+          if(y1 < y2){ v = 1; } else { v = -1; }
+          tx1 = x2;
+          ty1 = y2 - kage.kMage * v * rate;
+        }
+        else if(y1 == y2){
+          if(x1 < x2){ v = 1; } else{ v = -1; }
+          tx1 = x2 - kage.kMage * v * rate;
+          ty1 = y2;
+        }
+        else{
+          rad = Math.atan((y2 - y1) / (x2 - x1));
+          if(x1 < x2){ v = 1; } else{ v = -1; }
+          tx1 = x2 - kage.kMage * Math.cos(rad) * v * rate;
+          ty1 = y2 - kage.kMage * Math.sin(rad) * v * rate;
+        }
+        if(x2 == x3){
+          if(y2 < y3){ v = 1; } else{ v = -1; }
+          tx2 = x2;
+          ty2 = y2 + kage.kMage * v * rate;
+        }
+        else if(y2 == y3){
+          if(x2 < x3){ v = 1; } else{ v = -1; }
+          tx2 = x2 + kage.kMage * v * rate;
+          ty2 = y2;
+        }
+        else{
+          rad = Math.atan((y3 - y2) / (x3 - x2));
+          if(x2 < x3){ v = 1; } else{ v = -1; }
+          tx2 = x2 + kage.kMage * Math.cos(rad) * v * rate;
+          ty2 = y2 + kage.kMage * Math.sin(rad) * v * rate;
+        }
+        cdDrawLine(kage, polygons, x1, y1, tx1, ty1, a2, 1);
+        cdDrawCurve(kage, polygons, tx1, ty1, x2, y2, tx2, ty2, 1, 1);
+        cdDrawLine(kage, polygons, tx2, ty2, x3, y3, 6, a3); // bolder by force
+      }
+      break;
     case 6:
       if(a3 == 5){
         /* only implimented for gothic
@@ -175,9 +261,9 @@ function dfDrawFont(kage, polygons, a1, a2, a3, x1, y1, x2, y2, x3, y3, x4, y4){
       break;
     case 7:
       cdDrawLine(kage, polygons, x1, y1, x2, y2, a2, 1);
-      cdDrawCurve(kage, polygons, x2, y2, x3, y3, x4, y4, 1, 7);
+      cdDrawCurve(kage, polygons, x2, y2, x3, y3, x4, y4, 1, a3);
       break;
-    case 9: // may not be exist
+    case 9: // may not be exist ... no need
       //kageCanvas[y1][x1] = 0;
       //kageCanvas[y2][x2] = 0;
       break;
-- 
1.7.10.4