From 7f69c1069c8e843da73df0e4fe101695138d8f35 Mon Sep 17 00:00:00 2001
From: Koichi KAMICHI <kamichi@fonts.jp>
Date: Thu, 5 Jun 2008 06:33:07 +0000
Subject: [PATCH] Detect error polygon(stroke) and skip output.

---
 engine/polygons.js |  176 +++++++++++++++++++++++++++-------------------------
 1 file changed, 90 insertions(+), 86 deletions(-)

diff --git a/engine/polygons.js b/engine/polygons.js
index fed54a1..dd3582a 100755
--- a/engine/polygons.js
+++ b/engine/polygons.js
@@ -1,91 +1,95 @@
 function Polygons(){
-  // method
-  function push(polygon){ // void
-    // only a simple check
-    var minx = 200;
-    var maxx = 0;
-    var miny = 200;
-    var maxy = 0;
-    for(var i = 0; i < polygon.array.length; i++){
-      if(polygon.array[i].x < minx){
-	minx = polygon.array[i].x;
-      }
-      if(polygon.array[i].x > maxx){
-	maxx = polygon.array[i].x;
-      }
-      if(polygon.array[i].y < miny){
-	miny = polygon.array[i].y;
-      }
-      if(polygon.array[i].y > maxy){
-	maxy = polygon.array[i].y;
-      }
-    }
-    if(minx != maxx && miny != maxy && polygon.array.length >= 3){
-      var newArray = new Array();
-      newArray.push(polygon.array.shift());
-      while(polygon.array.length != 0){
-	var temp = polygon.array.shift();
-	if(newArray[newArray.length - 1].x != temp.x ||
-	   newArray[newArray.length - 1].y != temp.y){
-	  newArray.push(temp);
-	}
-      }
-      if(newArray.length >= 3){
-	polygon.array = newArray;
-	this.array.push(polygon);
-      }
-    }
-  }
-  Polygons.prototype.push = push;
-  
-  function generateSVG(){ // string
-    var buffer = "";
-    buffer += "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" version=\"1.1\" baseProfile=\"full\" viewBox=\"0 0 199 199\">\n";
-    buffer += "<g fill=\"black\">\n";
-    for(var i = 0; i < this.array.length; i++){
-      buffer += "<polygon points=\"";
-      for(var j = 0; j < this.array[i].array.length; j++){
-        buffer += this.array[i].array[j].x + "," + this.array[i].array[j].y + " ";
-      }
-      buffer += "\" />\n";
-    }
-    buffer += "</g>\n";
-    buffer += "</svg>\n";
-    return buffer;
-  }
-  Polygons.prototype.generateSVG = generateSVG;
-
-    function generateEPS(){ // string
-	var buffer = "";
-	buffer += "%!PS-Adobe-3.0 EPSF-3.0\n";
-	buffer += "%%BoundingBox: 0 -208 1024 816\n";
-	buffer += "%%Pages: 0\n";
-	buffer += "%%Title: Kanji glyph\n";
-	buffer += "%%Creator: GlyphWiki powered by KAGE system\n";
-	buffer += "%%CreationDate: " + new Date() + "\n";
-	buffer += "%%EndComments\n";
-	buffer += "%%EndProlog\n";
-	buffer += "newpath\n";
-	
-	for(var i = 0; i < this.array.length; i++){
-	    for(var j = 0; j < this.array[i].array.length; j++){
-		buffer += (this.array[i].array[j].x * 5) + " " + (1000 - this.array[i].array[j].y * 5 - 200) + " ";
-		if(j == 0){
-		    buffer += "moveto\n";
-		} else {
-		    buffer += "lineto\n";
+		// method
+		function push(polygon){ // void
+				// only a simple check
+				var minx = 200;
+				var maxx = 0;
+				var miny = 200;
+				var maxy = 0;
+				var error = 0;
+				for(var i = 0; i < polygon.array.length; i++){
+						if(polygon.array[i].x < minx){
+								minx = polygon.array[i].x;
+						}
+						if(polygon.array[i].x > maxx){
+								maxx = polygon.array[i].x;
+						}
+						if(polygon.array[i].y < miny){
+								miny = polygon.array[i].y;
+						}
+						if(polygon.array[i].y > maxy){
+								maxy = polygon.array[i].y;
+						}
+						if(isNaN(polygon.array[i].x) || isNaN(polygon.array[i].y)){
+								error++;
+						}
+				}
+				if(error == 0 && minx != maxx && miny != maxy && polygon.array.length >= 3){
+						var newArray = new Array();
+						newArray.push(polygon.array.shift());
+						while(polygon.array.length != 0){
+								var temp = polygon.array.shift();
+								if(newArray[newArray.length - 1].x != temp.x ||
+									 newArray[newArray.length - 1].y != temp.y){
+										newArray.push(temp);
+								}
+						}
+						if(newArray.length >= 3){
+								polygon.array = newArray;
+								this.array.push(polygon);
+						}
+				}
+		}
+		Polygons.prototype.push = push;
+		
+		function generateSVG(){ // string
+				var buffer = "";
+				buffer += "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" version=\"1.1\" baseProfile=\"full\" viewBox=\"0 0 199 199\">\n";
+				buffer += "<g fill=\"black\">\n";
+				for(var i = 0; i < this.array.length; i++){
+						buffer += "<polygon points=\"";
+						for(var j = 0; j < this.array[i].array.length; j++){
+								buffer += this.array[i].array[j].x + "," + this.array[i].array[j].y + " ";
+						}
+						buffer += "\" />\n";
+				}
+				buffer += "</g>\n";
+				buffer += "</svg>\n";
+				return buffer;
 		}
-	    }
-	    buffer += "closepath\n";
-	}
-	buffer += "fill\n";
-	buffer += "%%EOF\n";
-	return buffer;
+		Polygons.prototype.generateSVG = generateSVG;
+		
+    function generateEPS(){ // string
+				var buffer = "";
+				buffer += "%!PS-Adobe-3.0 EPSF-3.0\n";
+				buffer += "%%BoundingBox: 0 -208 1024 816\n";
+				buffer += "%%Pages: 0\n";
+				buffer += "%%Title: Kanji glyph\n";
+				buffer += "%%Creator: GlyphWiki powered by KAGE system\n";
+				buffer += "%%CreationDate: " + new Date() + "\n";
+				buffer += "%%EndComments\n";
+				buffer += "%%EndProlog\n";
+				buffer += "newpath\n";
+				
+				for(var i = 0; i < this.array.length; i++){
+						for(var j = 0; j < this.array[i].array.length; j++){
+								buffer += (this.array[i].array[j].x * 5) + " " + (1000 - this.array[i].array[j].y * 5 - 200) + " ";
+								if(j == 0){
+										buffer += "moveto\n";
+								} else {
+										buffer += "lineto\n";
+								}
+						}
+						buffer += "closepath\n";
+				}
+				buffer += "fill\n";
+				buffer += "%%EOF\n";
+				return buffer;
     }
     Polygons.prototype.generateEPS = generateEPS;
-
-  // property
-  this.array = new Array();
-  
-  return this;
+		
+		// property
+		this.array = new Array();
+		
+		return this;
 }
-- 
1.7.10.4