From 2dce1916c55fa2da6a618ba6961d9ba1a0213929 Mon Sep 17 00:00:00 2001
From: Martin Schultz <Martin.Schultz@rwth-aachen.de>
Date: Fri, 11 Sep 2015 15:41:16 +0200
Subject: [PATCH] * made STLReader reuse stringstreams

---
 src/OpenMesh/Core/IO/reader/STLReader.cc | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/OpenMesh/Core/IO/reader/STLReader.cc b/src/OpenMesh/Core/IO/reader/STLReader.cc
index d274844f..c75c81f2 100644
--- a/src/OpenMesh/Core/IO/reader/STLReader.cc
+++ b/src/OpenMesh/Core/IO/reader/STLReader.cc
@@ -249,6 +249,9 @@ read_stla(std::istream& _in, BaseImporter& _bi, Options& _opt) const
 
   std::string line;
 
+  static std::string        garbage;
+  static std::stringstream  strstream;
+
   bool facet_normal(false);
 
   while( _in && !_in.eof() ) {
@@ -265,9 +268,8 @@ read_stla(std::istream& _in, BaseImporter& _bi, Options& _opt) const
 
     // Normal found?
     if (line.find("facet normal") != std::string::npos) {
-      std::stringstream strstream(line);
-
-      std::string garbage;
+      strstream.str(line);
+      strstream.clear();
 
       // facet
       strstream >> garbage;
@@ -292,9 +294,9 @@ read_stla(std::istream& _in, BaseImporter& _bi, Options& _opt) const
         std::getline(_in, line);
         trimStdString(line);
 
-        std::stringstream strstream(line);
+        strstream.str(line);
+        strstream.clear();
 
-        std::string garbage;
         strstream >> garbage;
 
         strstream >> v[0];