From edaed5996ac00b8f2727716f01a8d7f57e721694 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 12 Mar 2003 13:54:59 +0000
Subject: [PATCH] Added 'w' toggle to StateSetManipulator to toggle between
 filled, line and point polygon drawing modes.

---
 src/osgGA/StateSetManipulator.cpp | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/src/osgGA/StateSetManipulator.cpp b/src/osgGA/StateSetManipulator.cpp
index 50b3f0edf..34afd6b14 100644
--- a/src/osgGA/StateSetManipulator.cpp
+++ b/src/osgGA/StateSetManipulator.cpp
@@ -1,5 +1,7 @@
 #include <osgGA/StateSetManipulator>
 
+#include <osg/PolygonMode>
+
 using namespace osg;
 using namespace osgGA;
 
@@ -62,6 +64,24 @@ bool StateSetManipulator::handle(const GUIEventAdapter& ea,GUIActionAdapter& aa)
                 return true;
                 break;
 
+        case 'w' :
+            {
+                osg::PolygonMode* polyModeObj = dynamic_cast<osg::PolygonMode*>(_drawState->getAttribute(osg::StateAttribute::POLYGONMODE));
+                if (!polyModeObj) 
+                {
+                    polyModeObj = new osg::PolygonMode;
+                    _drawState->setAttribute(polyModeObj);
+                }
+                
+                // cycle through the available modes.  
+                switch(polyModeObj->getMode(osg::PolygonMode::FRONT_AND_BACK))
+                {
+                    case osg::PolygonMode::FILL : polyModeObj->setMode(osg::PolygonMode::FRONT_AND_BACK,osg::PolygonMode::LINE); break;
+                    case osg::PolygonMode::LINE : polyModeObj->setMode(osg::PolygonMode::FRONT_AND_BACK,osg::PolygonMode::POINT); break;
+                    case osg::PolygonMode::POINT : polyModeObj->setMode(osg::PolygonMode::FRONT_AND_BACK,osg::PolygonMode::FILL); break;
+                }
+            }
+            break;
         }
     }
     return false;
@@ -72,6 +92,7 @@ void StateSetManipulator::getUsage(osg::ApplicationUsage& usage) const
     usage.addKeyboardMouseBinding("b","Toggle backface culling");
     usage.addKeyboardMouseBinding("l","Toggle lighting");
     usage.addKeyboardMouseBinding("t","Toggle texturing");
+    usage.addKeyboardMouseBinding("w","Toggle polygon fill mode between fill, line (wire frame) and points");
 }
 
 void StateSetManipulator::accept(GUIEventHandlerVisitor& gehv)