From 3cccecb79df53e80c4448011e786a22ff9281613 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 27 Mar 2013 16:29:01 +0000
Subject: [PATCH] Added keypad control of corner points

---
 examples/osgkeystone/osgkeystone.cpp | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/examples/osgkeystone/osgkeystone.cpp b/examples/osgkeystone/osgkeystone.cpp
index 945e4a1a4..a52ea227f 100644
--- a/examples/osgkeystone/osgkeystone.cpp
+++ b/examples/osgkeystone/osgkeystone.cpp
@@ -395,6 +395,30 @@ bool KeystoneHandler::handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionA
             {
                 move(computeRegion(ea), osg::Vec2d(_keyIncrement.x()*incrementScale(ea).x(), 0.0) );
             }
+            else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_7 || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_Home)
+            {
+                _currentControlPoints->top_left.set(ea.getXnormalized(), ea.getYnormalized());
+                _keystone->updateKeystone(*_currentControlPoints);
+            }
+            else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_9 || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_Page_Up)
+            {
+                _currentControlPoints->top_right.set(ea.getXnormalized(), ea.getYnormalized());
+                _keystone->updateKeystone(*_currentControlPoints);
+            }
+            else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_3 || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_Page_Down)
+            {
+                _currentControlPoints->bottom_right.set(ea.getXnormalized(), ea.getYnormalized());
+                _keystone->updateKeystone(*_currentControlPoints);
+            }
+            else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_1 || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_End)
+            {
+                _currentControlPoints->bottom_left.set(ea.getXnormalized(), ea.getYnormalized());
+                _keystone->updateKeystone(*_currentControlPoints);
+            }
+            else
+            {
+                OSG_NOTICE<<"key = 0x"<<std::hex<<ea.getKey()<<std::dec<<std::endl;
+            }
             return false;
         }
         default:
@@ -589,6 +613,8 @@ void setUpViewForKeystone(osgViewer::View* view, Keystone* keystone)
     unsigned int width, height;
     wsi->getScreenResolution(si, width, height);
 
+    width/=2; height/=2;
+
     osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
     traits->hostName = si.hostName;
     traits->displayNum = si.displayNum;