From 45de7a5815e17d6720f82d698c2a4b9bc3c2c077 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Sun, 17 Mar 2002 18:44:47 +0000
Subject: [PATCH] Added new osgstereoimage demo which loads two stero paired
 images to create a 3D via of photographed scene.

---
 VisualStudio/VisualStudio.dsw               |  24 ++++
 src/Demos/Makefile                          |   2 +-
 src/Demos/osgstereoimage/Makefile           |  27 ++++
 src/Demos/osgstereoimage/osgstereoimage.cpp | 140 ++++++++++++++++++++
 src/osg/Image.cpp                           |   5 +-
 5 files changed, 196 insertions(+), 2 deletions(-)
 create mode 100644 src/Demos/osgstereoimage/Makefile
 create mode 100644 src/Demos/osgstereoimage/osgstereoimage.cpp

diff --git a/VisualStudio/VisualStudio.dsw b/VisualStudio/VisualStudio.dsw
index 443ed1f85..1c9356c9f 100644
--- a/VisualStudio/VisualStudio.dsw
+++ b/VisualStudio/VisualStudio.dsw
@@ -648,6 +648,30 @@ Package=<4>
 
 ###############################################################################
 
+Project: "osgtexture"=".\Demos\osgstereo\osgstereo.dsp" - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+    Begin Project Dependency
+    Project_Dep_Name osg
+    End Project Dependency
+    Begin Project Dependency
+    Project_Dep_Name osgUtil
+    End Project Dependency
+    Begin Project Dependency
+    Project_Dep_Name osgDB
+    End Project Dependency
+    Begin Project Dependency
+    Project_Dep_Name osgGLUT
+    End Project Dependency
+}}}
+
+###############################################################################
+
 Project: "tga"=".\osgPlugins\tga\tga.dsp" - Package Owner=<4>
 
 Package=<5>
diff --git a/src/Demos/Makefile b/src/Demos/Makefile
index 5b7c5126c..9d8606ed6 100644
--- a/src/Demos/Makefile
+++ b/src/Demos/Makefile
@@ -1,7 +1,7 @@
 #!gmake
 SHELL=/bin/sh
 
-DIRS = sgv osgconv osgcube osgscribe osgreflect osgtexture osgimpostor osgviews osgcopy osgbillboard hangglide 
+DIRS = sgv osgconv osgcube osgscribe osgreflect osgtexture osgimpostor osgviews osgcopy osgbillboard osgstereoimage hangglide 
 
 # comment out if you don't have the freetype and GLU1.3 library installed.
 DIRS += osgtext 
diff --git a/src/Demos/osgstereoimage/Makefile b/src/Demos/osgstereoimage/Makefile
new file mode 100644
index 000000000..4ebcb2761
--- /dev/null
+++ b/src/Demos/osgstereoimage/Makefile
@@ -0,0 +1,27 @@
+#!gmake
+include $(OSGHOME)/Make/makedefs
+
+C++FILES = \
+	osgstereoimage.cpp
+
+TARGET = $(OSGHOME)/bin/osgstereoimage
+
+TARGET_BIN_FILES = osgstereoimage
+
+#note, use this library list when using the Performer osgPlugin.
+#LIBS = ${PFLIBS} -losgGLUT -losgUtil -losgDB -losg $(GLUTLIB) -lGLU -lGL  -lm -lXmu  -lX11 -lXi
+
+#note, standard library list. 
+LIBS = -losgGLUT -losgUtil -losgDB -losg $(GLUTLIB) $(GL_LIBS) $(X_LIBS)
+
+#under Darwin we have to use the framework stuff to get GLUT OpenGL etc.
+MACOSXLIBS = -losgGLUT -losgUtil -losgDB -losg -lm -ldl -lstdc++ -lobjc
+
+
+C++FLAGS += -I$(OSGHOME)/include
+LDFLAGS += -L$(OSGHOME)/lib
+
+include $(OSGHOME)/Make/makerules
+
+test :
+	osgstereoimage Images/dog_left_eye.jpg Images/dog_right_eye.jpg
diff --git a/src/Demos/osgstereoimage/osgstereoimage.cpp b/src/Demos/osgstereoimage/osgstereoimage.cpp
new file mode 100644
index 000000000..93f8422a4
--- /dev/null
+++ b/src/Demos/osgstereoimage/osgstereoimage.cpp
@@ -0,0 +1,140 @@
+#include <osg/Node>
+#include <osg/GeoSet>
+#include <osg/Notify>
+#include <osg/Transform>
+#include <osg/Texture>
+
+#include <osgUtil/TrackballManipulator>
+#include <osgUtil/FlightManipulator>
+#include <osgUtil/DriveManipulator>
+
+#include <osgDB/Registry>
+#include <osgDB/ReadFile>
+
+#include <osgGLUT/glut>
+#include <osgGLUT/Viewer>
+
+
+
+
+void write_usage(std::ostream& out,const std::string& name)
+{
+    out << std::endl;
+    out <<"usage:"<< std::endl;
+    out <<"    "<<name<<" [options] image_left_eye image_right_eye"<< std::endl;
+    out << std::endl;
+    out <<"options:"<< std::endl;
+    out <<"    -l libraryName      - load plugin of name libraryName"<< std::endl;
+    out <<"                          i.e. -l osgdb_pfb"<< std::endl;
+    out <<"                          Useful for loading reader/writers which can load"<< std::endl;
+    out <<"                          other file formats in addition to its extension."<< std::endl;
+    out <<"    -e extensionName    - load reader/wrter plugin for file extension"<< std::endl;
+    out <<"                          i.e. -e pfb"<< std::endl;
+    out <<"                          Useful short hand for specifying full library name as"<< std::endl;
+    out <<"                          done with -l above, as it automatically expands to"<< std::endl;
+    out <<"                          the full library name appropriate for each platform."<< std::endl;
+    out <<std::endl;
+    out <<"    -stereo             - switch on stereo rendering, using the default of,"<< std::endl;
+    out <<"                          ANAGLYPHIC or the value set in the OSG_STEREO_MODE "<< std::endl;
+    out <<"                          environmental variable. See doc/stereo.html for "<< std::endl;
+    out <<"                          further details on setting up accurate stereo "<< std::endl;
+    out <<"                          for your system. "<< std::endl;
+    out <<"    -stereo ANAGLYPHIC  - switch on anaglyphic(red/cyan) stereo rendering."<< std::endl;
+    out <<"    -stereo QUAD_BUFFER - switch on quad buffered stereo rendering."<< std::endl;
+    out <<std::endl;
+    out <<"    -stencil            - use a visual with stencil buffer enabled, this "<< std::endl;
+    out <<"                          also allows the depth complexity statistics mode"<< std::endl;
+    out <<"                          to be used (press 'p' three times to cycle to it)."<< std::endl;
+    out << std::endl;
+    out<<"example:"<<std::endl;
+    out<<"     Images/dog_left_eye.jpg Images/dog_right_eye.jpg"<<std::endl;
+    out<<std::endl;
+}
+
+int main( int argc, char **argv )
+{
+
+    // initialize the GLUT
+    glutInit( &argc, argv );
+
+    if (argc<2)
+    {
+        write_usage(osg::notify(osg::NOTICE),argv[0]);
+        return 0;
+    }
+
+    // create the commandline args.
+    std::vector<std::string> commandLine;
+    for(int i=1;i<argc;++i) commandLine.push_back(argv[i]);
+
+
+    // initialize the viewer.
+    osgGLUT::Viewer viewer;
+    viewer.setWindowTitle(argv[0]);
+    
+    
+    // default to enabling stereo.
+    viewer.getDisplaySettings()->setStereo(true);
+
+    // configure the viewer from the commandline arguments, and eat any
+    // parameters that have been matched.
+    viewer.readCommandLine(commandLine);
+    
+    // configure the plugin registry from the commandline arguments, and 
+    // eat any parameters that have been matched.
+    osgDB::readCommandLine(commandLine);
+
+
+    if (commandLine.size()<2)
+    {
+        osg::notify(osg::NOTICE) << "Please specify two images required for stereo imaging."<<std::endl;
+        return 0;
+    }
+    
+    osg::Image* imageLeft = osgDB::readImageFile(commandLine[0]);
+    osg::Image* imageRight = osgDB::readImageFile(commandLine[1]);
+    
+
+    if (imageLeft && imageRight)
+    {    
+    
+        float average_s = (imageLeft->s()+imageRight->s())*0.5f;
+        float average_t = (imageLeft->t()+imageRight->t())*0.5f;
+    
+        osg::Geode* geodeLeft = osg::createGeodeForImage(imageLeft,average_s,average_t);
+        geodeLeft->setNodeMask(0x01);
+
+        osg::Geode* geodeRight = osg::createGeodeForImage(imageRight,average_s,average_t);
+        geodeRight->setNodeMask(0x02);
+
+
+        osg::Group* rootNode = new osg::Group;
+        rootNode->addChild(geodeLeft);
+        rootNode->addChild(geodeRight);
+
+
+        // add model to viewer.
+        osgUtil::SceneView* sceneview = new osgUtil::SceneView;
+        sceneview->setDisplaySettings(viewer.getDisplaySettings());
+        sceneview->setDefaults();
+        sceneview->setCullMask(0xffffffff);
+        sceneview->setCullMaskLeft(0x00000001);
+        sceneview->setCullMaskRight(0x00000002);
+        sceneview->setSceneData(rootNode);
+        viewer.addViewport( sceneview );
+
+        // register trackball.
+        viewer.registerCameraManipulator(new osgUtil::TrackballManipulator);
+
+        viewer.open();
+
+        viewer.run();
+    }
+    else
+    {
+        osg::notify(osg::NOTICE) << "Unable to load two images required for stereo imaging."<<std::endl;
+        return 0;
+    }
+    
+    return 0;
+}
diff --git a/src/osg/Image.cpp b/src/osg/Image.cpp
index abae68a2c..3cfeadcc9 100644
--- a/src/osg/Image.cpp
+++ b/src/osg/Image.cpp
@@ -157,8 +157,11 @@ void Image::ensureDimensionsArePowerOfTwo()
     {
         init = false;
         glGetIntegerv(GL_MAX_TEXTURE_SIZE,&max_size);
-        std::cout<<"Max texture size "<<max_size<<std::endl;
+        notify(INFO) << "Max texture size "<<max_size<<std::endl;
     }
+    
+    //max_size = 64;
+    
     if (new_s>max_size) new_s = max_size;
     if (new_t>max_size) new_t = max_size;