diff --git a/yg/pen_info.cpp b/yg/pen_info.cpp
index 40a2c1a876..a201a146e9 100644
--- a/yg/pen_info.cpp
+++ b/yg/pen_info.cpp
@@ -18,12 +18,35 @@ namespace yg
       m_isSolid = true;
     else
     {
+/*      buffer_vector<double, 8> vec;
+      copy(pattern, pattern + patternSize, back_inserter(vec));
+      double length = 0;
+      for (size_t i = 0; i < vec.size(); ++i)
+      {
+        if ((vec[i] < 2) && (vec[i] > 0))
+          vec[i] = 2;
+        length += vec[i];
+      }
+
+      int periods = min(20, max(int(100 / length), 1));
+      m_pat.reserve(periods * vec.size());
+      for (int i = 0; i < periods; ++i)
+        copy(vec.begin(), vec.end(), back_inserter(m_pat));
+        */
       copy(pattern, pattern + patternSize, back_inserter(m_pat));
+      double length = 0;
       for (size_t i = 0; i < m_pat.size(); ++i)
       {
         if ((m_pat[i] < 2) && (m_pat[i] > 0))
           m_pat[i] = 2;
+//        length += m_pat[i];
       }
+
+/*      int periods = min(20, max(int(100 / length), 1));
+      m_pat.reserve(periods * vec.size());
+      for (int i = 0; i < periods; ++i)
+        copy(vec.begin(), vec.end(), back_inserter(m_pat));
+*/
     }
   }
 
diff --git a/yg/pen_info.hpp b/yg/pen_info.hpp
index 0bd73ce1dc..daae16c034 100644
--- a/yg/pen_info.hpp
+++ b/yg/pen_info.hpp
@@ -3,12 +3,14 @@
 #include "color.hpp"
 
 #include "../std/vector.hpp"
+#include "../base/buffer_vector.hpp"
 
 namespace yg
 {
   /// definition of the line style pattern used as a texture-cache-key
   struct PenInfo
   {
+    //typedef buffer_vector<double, 8> TPattern;
     typedef vector<double> TPattern;
     Color m_color;
     double m_w;