From dd137c2442db106a97beac93b39209af94959543 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 18 Jun 2008 11:13:51 +0000
Subject: [PATCH] From Bob Kuehne, "this submission extends the
 osgViewer::RecordCameraPathHandler to have an optionally-enabled
 auto-incrementing filename. default behavior is still the same, but there's
 one new method to enable autoincrementing filenames."

From Robert Osfield, modified the above so that the number increments come after the filename rather than before.
---
 include/osgViewer/ViewerEventHandlers |  3 +++
 src/osgViewer/ViewerEventHandlers.cpp | 17 +++++++++++++++--
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/include/osgViewer/ViewerEventHandlers b/include/osgViewer/ViewerEventHandlers
index 67ff59262..1d98359cf 100644
--- a/include/osgViewer/ViewerEventHandlers
+++ b/include/osgViewer/ViewerEventHandlers
@@ -236,6 +236,8 @@ public:
         void setKeyEventTogglePlayback(int key) { _keyEventTogglePlayback = key; }
         int getKeyEventTogglePlayback() const { return _keyEventTogglePlayback; }
 
+        void setAutoIncrementFilename( bool autoinc = true ) { _autoinc = autoinc?0:-1; }
+
         virtual void getUsage(osg::ApplicationUsage &usage) const;
 
         bool handle(const osgGA::GUIEventAdapter &ea, osgGA::GUIActionAdapter &aa);
@@ -243,6 +245,7 @@ public:
 protected:
 
         std::string                                     _filename;
+        int                                             _autoinc;
         std::ofstream                                   _fout;
 
         int                                             _keyEventToggleRecord;
diff --git a/src/osgViewer/ViewerEventHandlers.cpp b/src/osgViewer/ViewerEventHandlers.cpp
index 7d02f5af1..08e3e06d2 100644
--- a/src/osgViewer/ViewerEventHandlers.cpp
+++ b/src/osgViewer/ViewerEventHandlers.cpp
@@ -15,9 +15,12 @@
 #include <float.h>
 #include <limits.h>
 
+#include <iomanip>
 #include <fstream>
 #include <sstream>
 
+#include <osgDB/FileNameUtils>
+
 #include <osgViewer/Viewer>
 #include <osgViewer/ViewerEventHandlers>
 
@@ -368,6 +371,7 @@ bool ThreadingHandler::handle(const osgGA::GUIEventAdapter &ea, osgGA::GUIAction
 
 RecordCameraPathHandler::RecordCameraPathHandler(const std::string& filename):
     _filename(filename),
+    _autoinc( -1 ),
     _keyEventToggleRecord('z'),
     _keyEventTogglePlayback('Z'),
     _currentlyRecording(false),
@@ -448,8 +452,17 @@ bool RecordCameraPathHandler::handle(const osgGA::GUIEventAdapter &ea, osgGA::GU
                     
                     if (!_filename.empty())
                     {
-                        osg::notify(osg::NOTICE)<<"Recording camera path to file "<<_filename<<std::endl;
-                        _fout.open(_filename.c_str());
+                        std::stringstream ss;
+                        ss << osgDB::getNameLessExtension(_filename);
+                        if ( _autoinc != -1 )
+                        {
+                            ss << "_"<<std::setfill( '0' ) << std::setw( 2 ) << _autoinc;
+                            _autoinc++;
+                        }
+                        ss << "."<<osgDB::getFileExtension(_filename);
+                        
+                        osg::notify(osg::NOTICE) << "Recording camera path to file " << ss.str() << std::endl;
+                        _fout.open( ss.str().c_str() );
                     }
                     else
                     {