// Initialize GLUT & OpenSG and set up the scene
int doMain(int argc, char **argv)
{
// OSG init
OSG::osgInit(argc,argv);
// GLUT init
int winid = setupGLUT(&argc, argv);
// the connection between GLUT and OpenSG
OSG::GLUTWindowRecPtr gwin= OSG::GLUTWindow::create();
gwin->setGlutId(winid);
gwin->init();
// put the geometry core into a node
scene = OSG::Node::create();
OSG::GroupRecPtr groupPtr = OSG::Group::create();
scene->setCore(groupPtr);
statfg = OSG::SimpleStatisticsForeground::create();
statfg->setSize(25);
statfg->setColor(OSG::Color4f(0,1,0,0.9f));
statfg->addElement(textureFormatDesc, "Pixel Format: %s");
statfg->addElement(textureDataTypeDesc, "Data Type: %s");
statfg->addElement(textureSizeDesc, "Texture Size: %s");
statfg->addElement(textureDimensionDesc, "Dimension: %i");
statfg->addElement(textureBPPDesc, "BPP: %i");
statfg->addElement(textureMipMapCountDesc, "MipMapCount: %i");
statfg->addElement(textureFrameCountDesc, "FrameCount: %i");
// Create the background
OSG::SolidBackgroundRecPtr bg = OSG::SolidBackground::create();
bg->setColor(OSG::Color3f(0.1f, 0.1f, 0.5f));
if (argc < 2)
{
std::cerr << "Usage: testImageLoader <filename>" << std::endl;
return EXIT_FAILURE;
}
updateScene(argv[1]);
szFilename = argv[1];
// create the SimpleSceneManager helper
mgr = new OSG::SimpleSceneManager;
// tell the manager what to manage
mgr->setWindow(gwin );
mgr->setRoot (scene);
// show the whole scene
mgr->showAll();
// add the statistics forground
gwin->getPort(0)->addForeground(statfg);
gwin->getPort(0)->setBackground(bg);
return 0;
}
int main( int argc, char **argv )
{
// OSG init
OSG::osgInit(argc, argv);
OSG::SceneFileHandler::the()->print();
// create the graph
// beacon for camera and light
OSG::NodeRecPtr b1n = OSG::Node::create();
OSG::GroupRecPtr b1 = OSG::Group::create();
b1n->setCore( b1 );
// transformation
OSG::NodeRecPtr t1n = OSG::Node::create();
OSG::TransformRecPtr t1 = OSG::Transform::create();
t1n->setCore( t1 );
t1n->addChild( b1n );
cam_trans = t1;
// light
OSG::NodeRecPtr dlight = OSG::Node::create();
OSG::DirectionalLightRecPtr dl = OSG::DirectionalLight::create();
dlight->setCore( dl );
dl->setAmbient( .3, .3, .3, 1 );
dl->setDiffuse( 1, 1, 1, 1 );
dl->setDirection(0,0,1);
dl->setBeacon( b1n);
// root
root = OSG::Node::create();
OSG::GroupRecPtr gr1 = OSG::Group::create();
root->setCore( gr1 );
root->addChild( t1n );
root->addChild( dlight );
// Load the file
OSG::NodeRecPtr file = NULL;
if ( argc > 1 )
file = OSG::SceneFileHandler::the()->read(argv[1]);
if ( file == NULL )
{
std::cerr << "Couldn't load file, ignoring" << std::endl;
file = OSG::makeTorus( .5, 2, 16, 16 );
}
OSG::commitChanges();
file->updateVolume();
OSG::Vec3f min,max;
file->getVolume().getBounds( min, max );
std::cout << "Volume: from " << min << " to " << max << std::endl;
dlight->addChild( file );
std::cerr << "Tree: " << std::endl;
root->dump();
// Camera
OSG::PerspectiveCameraRecPtr cam = OSG::PerspectiveCamera::create();
cam->setBeacon( b1n );
cam->setFov( OSG::osgDegree2Rad( 60 ) );
cam->setNear( 1 );
cam->setFar( 4000 );
// Background
OSG::SolidBackgroundRecPtr bkgnd = OSG::SolidBackground::create();
bkgnd->setColor( OSG::Color3f( 0,0,1 ) );
// Viewport
vp = OSG::Viewport::create();
vp->setCamera( cam );
vp->setBackground( bkgnd );
vp->setRoot( root );
vp->setSize( 0,0, 1,1 );
// Action
ract = OSG::RenderAction::create();
// QT init
QApplication::setColorSpec( QApplication::CustomColor );
a = new QApplication( argc, argv );
if ( !QGLFormat::hasOpenGL() )
{
qWarning( "This system has no OpenGL support. Exiting." );
return -1;
}
OSG::Vec3f pos( 0, 0, max[2] + ( max[2] - min[2] ) * 1.5 );
// Create Window
glWidget = new MyOSGQGLWidget(
new OSG::OSGQGLWidget::GLContext(QGLFormat::defaultFormat()), 0, 0, 0);
glWidget->tball.setMode( OSG::Trackball::OSGObject );
glWidget->tball.setStartPosition( pos, true );
glWidget->tball.setSum( true );
glWidget->tball.setTranslationMode( OSG::Trackball::OSGFree );
glWidget->osgWin = OSG::QT4Window::create();
glWidget->osgWin->setGlWidget( glWidget );
glWidget->osgWin->addPort( vp );
glWidget->osgWin->init(&MyOSGQGLWidget::initOpenGL);
a->processEvents();
glWidget->show();
a->exec(); // execute QT main loop
root = NULL;
file = NULL;
vp = NULL;
cam_trans = NULL;
cam = NULL;
osgTWin = NULL;
delete glWidget;
glWidget = NULL;
delete a;
return 0;
}
int main(int argc, char *argv[])
{
// Init the OpenSG subsystem
OSG::osgInit(argc, argv);
{
// We create a GLUT Window (that is almost the same for most applications)
int winid = setupGLUT(&argc, argv);
OSG::GLUTWindowRecPtr gwin = OSG::GLUTWindow::create();
gwin->setGlutId(winid);
gwin->init();
// Create the face
std::string family = "SANS";
OSG::TextFace::Style style = OSG::TextFace::STYLE_PLAIN;
OSG::UInt32 size = 32;
OSG::TextPixmapFaceRefPtr face =
OSG::TextPixmapFace::create(family, style, size);
if (face == 0)
{
std::cerr << "ERROR: Cannot create face object!" << std::endl;
return -1;
}
// Lay out one single line of text
std::string text = "Hello World!"; // Use UTF-8 encoding!
OSG::TextLayoutParam layoutParam;
layoutParam.horizontal = true;
layoutParam.leftToRight = true;
layoutParam.topToBottom = true;
layoutParam.majorAlignment = OSG::TextLayoutParam::ALIGN_FIRST;
layoutParam.minorAlignment = OSG::TextLayoutParam::ALIGN_FIRST;
layoutParam.spacing = 1.f;
layoutParam.length.push_back(0.f);
layoutParam.maxExtend = 0.f;
OSG::TextLayoutResult layoutResult;
face->layout(text, layoutParam, layoutResult);
// Render the text into an OpenSG image
OSG::Vec2f offset;
OSG::UInt32 border = 1;
OSG::ImageRecPtr imagePtr = face->makeImage(layoutResult, offset, border);
// Create the geometry which we will assign the texture to
OSG::Real32 width = imagePtr->getWidth();
OSG::Real32 height = imagePtr->getHeight();
OSG::NodeRecPtr plane = OSG::makePlane(width, height, 1, 1);
// Create the texture that will hold the image
OSG::SimpleTexturedMaterialRecPtr tex =
OSG::SimpleTexturedMaterial::create();
tex->setImage(imagePtr);
tex->setEnvMode(GL_MODULATE);
tex->setDiffuse(OSG::Color3f(1, 0, 0));
// Assign the texture to the geometry
OSG::GeometryRecPtr geo =
dynamic_cast<OSG::Geometry *>(plane->getCore());
geo->setMaterial(tex);
// Transform the geometry so that the origin of the text is at
// the origin of the world coordinate system
OSG::NodeRecPtr scene = OSG::Node::create();
OSG::TransformRecPtr transformPtr = OSG::Transform::create();
OSG::Matrix m;
m.setTranslate(offset.x() + width / 2, offset.y() - height / 2, 0);
transformPtr->setMatrix(m);
scene->setCore(transformPtr);
scene->addChild(plane);
// Create and setup the SSM
mgr = new OSG::SimpleSceneManager;
mgr->setWindow(gwin);
mgr->setRoot(scene);
// Create a blue background
OSG::SolidBackgroundRecPtr bg = OSG::SolidBackground::create();
bg->setColor(OSG::Color3f(0.1, 0.1, 0.5));
gwin->getPort(0)->setBackground(bg);
mgr->showAll();
OSG::commitChanges();
}
// Give Control to the GLUT Main Loop
glutMainLoop();
return 0;
}
void init(std::vector<std::string> &filenames)
{
size_t i;
OSG::DirectionalLightUnrecPtr dl;
OSG::Real32 x,y,z;
OSG::BoxVolume volume;
OSG::Vec3f min,max;
OSG::Vec3f size;
glEnable( GL_DEPTH_TEST );
glEnable( GL_LIGHTING );
glEnable( GL_LIGHT0 );
// GLint twoSide = 1;
// glLightModeliv(GL_LIGHT_MODEL_TWO_SIDE,&twoSide);
glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
// create the graph
// beacon for camera and light
OSG::NodeUnrecPtr b1n = OSG::Node::create();
OSG::GroupUnrecPtr b1 = OSG::Group::create();
b1n->setCore( b1 );
// transformation
OSG::NodeUnrecPtr t1n = OSG::Node::create();
OSG::TransformUnrecPtr t1 = OSG::Transform::create();
t1n->setCore( t1 );
t1n->addChild( b1n );
cam_trans = t1;
// light
OSG::NodeUnrecPtr dlight = OSG::Node::create();
dl = OSG::DirectionalLight::create();
dlight->setCore( dl );
dl->setAmbient( .3f, .3f, .3f, 1 );
dl->setDiffuse( 1, 1, 1, 1 );
dl->setDirection(0,0,1);
dl->setBeacon( b1n);
// root
root = OSG::Node::create();
OSG::GroupUnrecPtr gr1 = OSG::Group::create();
root->setCore( gr1 );
root->addChild( t1n );
root->addChild( dlight );
// Load the file
OSG::NodeUnrecPtr scene = OSG::Node::create();
scene->setCore(OSG::Group::create());
OSG::NodeUnrecPtr file;
for(i=0;i<filenames.size();i++)
{
file = OSG::SceneFileHandler::the()->read(filenames[i].c_str(),0);
if(file != NULL)
scene->addChild(file);
else
std::cerr << "Couldn't load file, ignoring " << filenames[i] << std::endl;
}
if ( filenames.size()==0 )
{
file = OSG::makeTorus( .5, 2, 16, 16 );
scene->addChild(file);
// scene->addChild(makeBox(.6,.6,.6,5,5,5));
}
prepareSceneGraph(scene);
OSG::Thread::getCurrentChangeList()->commitChanges();
scene->invalidateVolume();
scene->updateVolume();
volume=scene->getVolume();
volume.getBounds(min,max);
size = max-min;
if(ca>0)
{
if(cb==-1)
cb=ca;
if(cc==-1)
cc=cb;
OSG::NodeUnrecPtr node;
OSG::NodeUnrecPtr geoNode;
OSG::TransformUnrecPtr trans;
for(x=-ca/2.0 ; x<ca/2.0 ; x++)
for(y=-cb/2.0 ; y<cb/2.0 ; y++)
for(z=-cc/2.0 ; z<cc/2.0 ; z++)
{
trans=OSG::Transform::create();
node=OSG::Node::create();
node->setCore(trans);
trans->editMatrix().setTranslate(
x*size[0]*1.1,
y*size[1]*1.1,
z*size[2]*1.1);
geoNode = OSG::cloneTree(scene);
geoNode->editSFVolume()->getValue() = scene->getSFVolume()->getValue();
geoNode->editVolume(false).setValid(true);
node->addChild( geoNode );
dlight->addChild(node);
}
}
else
{
dlight->addChild(scene);
}
if(ca>0)
{
sum_geometries*=OSG::UInt32(ca*cb*cc);
sum_triangles *=OSG::UInt32(ca*cb*cc);
sum_positions *=OSG::UInt32(ca*cb*cc);
}
OSG::Thread::getCurrentChangeList()->commitChanges();
// dlight->invalidateVolume();
printf("update Volume\n");
dlight->updateVolume();
printf("update Volume OK\n");
// should check first. ok for now.
const OSG::BoxVolume &vol = dlight->getVolume();
OSG::Pnt3f center;
vol.getBounds(min, max);
vol.getCenter(center);
size = max - min;
std::cout << "Volume: from " << min << " to " << max << std::endl;
std::cout << "Center: " << center << std::endl;
// Camera
OSG::PerspectiveCameraUnrecPtr cam = OSG::PerspectiveCamera::create();
cam->setBeacon( b1n );
cam->setFov( OSG::osgDegree2Rad( 60 ) );
cam->setNear( 10 );
cam->setFar( 50000 );
// Solid Background
bkgnd = OSG::SolidBackground::create();
bkgnd->setColor( OSG::Color3f(0,0,0) );
// bkgnd->setColor( OSG::Color3f(.1,.1,.6) );
// bkgnd->setColor( OSG::Color3f(1,1,1) );
// Viewport
OSG::ViewportUnrecPtr vp1;
OSG::ViewportUnrecPtr vp2;
if(stereoMode == 0)
{
vp1 = OSG::Viewport::create();
vp1->setCamera ( cam );
vp1->setBackground( bkgnd );
vp1->setRoot ( root );
vp1->setSize ( 0,0, 1,1 );
if(multiport)
{
vp2 = OSG::Viewport::create();
vp2->setCamera ( cam );
vp2->setBackground( bkgnd );
vp2->setRoot ( root );
vp2->setSize ( .1f, .55f, .7f,.95f );
}
}
else if(stereoMode == 1)
{
OSG::ShearedStereoCameraDecoratorUnrecPtr deco;
// left
deco=OSG::ShearedStereoCameraDecorator::create();
deco->setLeftEye(true);
deco->setEyeSeparation(eyedistance);
deco->setDecoratee(cam);
deco->setZeroParallaxDistance(zeroparallax);
vp1 = OSG::Viewport::create();
vp1->setCamera ( deco );
vp1->setBackground( bkgnd );
vp1->setRoot ( root );
vp1->setSize ( 0,0, .5,1 );
// right
deco=OSG::ShearedStereoCameraDecorator::create();
deco->setLeftEye(false);
deco->setEyeSeparation(eyedistance);
deco->setDecoratee(cam);
deco->setZeroParallaxDistance(zeroparallax);
vp2 = OSG::Viewport::create();
vp2->setCamera ( deco );
vp2->setBackground( bkgnd );
vp2->setRoot ( root );
vp2->setSize ( .5,0,1,1 );
}
else if(stereoMode == 2)
{
OSG::ShearedStereoCameraDecoratorUnrecPtr deco;
// left
deco=OSG::ShearedStereoCameraDecorator::create();
deco->setLeftEye(true);
deco->setEyeSeparation(eyedistance);
deco->setDecoratee(cam);
deco->setZeroParallaxDistance(zeroparallax);
OSG::ColorBufferViewportUnrecPtr cvp1 =
OSG::ColorBufferViewport::create();
cvp1->setCamera ( deco );
cvp1->setBackground( bkgnd );
cvp1->setRoot ( root );
cvp1->setSize ( 0,0, 1,1 );
cvp1->setRed(GL_FALSE);
cvp1->setGreen(GL_TRUE);
cvp1->setBlue(GL_TRUE);
cvp1->setAlpha(GL_TRUE);
vp1 = cvp1;
// right
deco=OSG::ShearedStereoCameraDecorator::create();
deco->setLeftEye(false);
deco->setEyeSeparation(eyedistance);
deco->setDecoratee(cam);
deco->setZeroParallaxDistance(zeroparallax);
OSG::ColorBufferViewportUnrecPtr cvp2 =
OSG::ColorBufferViewport::create();
cvp2->setCamera ( deco );
cvp2->setBackground( bkgnd );
cvp2->setRoot ( root );
cvp2->setSize ( 0,0,1,1 );
cvp2->setRed(GL_TRUE);
cvp2->setGreen(GL_FALSE);
cvp2->setBlue(GL_FALSE);
cvp2->setAlpha(GL_FALSE);
vp2 = cvp2;
}
GLint glvp[4];
glGetIntegerv( GL_VIEWPORT, glvp );
if(serverx>0 && servery>0)
clusterWindow->setSize( serverx, servery );
else
clusterWindow->setSize( glvp[2], glvp[3] );
clusterWindow->addPort( vp1 );
if(multiport || stereoMode > 0)
clusterWindow->addPort( vp2 );
if(serviceInterfaceValid == true)
{
clusterWindow->setServiceInterface(serviceInterface);
fprintf(stderr, "tcclient use if %s\n", serviceInterface.c_str());
}
if(serviceAddressValid == true)
{
clusterWindow->setServiceAddress(serviceAddress);
fprintf(stderr, "tcclient use ba %s\n", serviceAddress.c_str());
}
// tball
OSG::Vec3f pos(min[0] + ((max[0] - min[0]) * 0.5),
min[1] + ((max[1] - min[1]) * 0.5),
max[2] + ( max[2] - min[2] ) * 1.5 );
float scale = (max[2] - min[2] + max[1] - min[1] + max[0] - min[0]) / 6;
tball.setMode( OSG::Trackball::OSGObject );
tball.setStartPosition( pos, true );
tball.setSum( true );
tball.setTranslationMode( OSG::Trackball::OSGFree );
tball.setTranslationScale(scale);
tball.setRotationCenter(center);
tball.setTranslationGen(OSG::Trackball::OSGAbsoluteTranslation);
// run...
std::cout << size.length() << std::endl;
cam->setFar (size.length() * 100.0);
cam->setNear(size.length() * 100.0 / 100000.0);
}
void key(unsigned char key, int /*x*/, int /*y*/)
{
switch ( key )
{
case 'l':
{
loadAnim();
break;
}
case 'c':
{
FILE *file=fopen(animName.c_str(),"w");
fclose(file);
animOri.clear();
animPos.clear();
frameCount = 0;
animTime = 0;
break;
}
case 's':
{
FILE *file=fopen(animName.c_str(),"a");
OSG::Matrix m=cam_trans->getMatrix();
OSG::Quaternion q(m);
OSG::Real32 ax,ay,az,r;
animPos.push_back(OSG::Vec3f(m[3][0],
m[3][1],
m[3][2]));
animOri.push_back(q);
q.getValueAsAxisRad(ax,ay,az,r);
fprintf(file,"%f %f %f %f,%f %f %f\n",ax,ay,az,r,
m[3][0],
m[3][1],
m[3][2]);
fclose(file);
frameCount = 0;
animTime = 0;
break;
}
case 'S':
{
FILE *file=fopen((animName+".wrl").c_str(),"w");
std::vector<OSG::Quaternion>::iterator qit;
fprintf(file,"DEF OriInter OrientationInterpolator {\n\tkey [");
for(size_t i = 0; i < animOri.size(); ++i)
{
fprintf(file, "%f", i / OSG::Real32(animOri.size() - 1) );
if(i < animOri.size() - 1)
fprintf(file,", ");
}
fprintf(file,"]\n\tkeyValue [");
for(qit = animOri.begin(); qit != animOri.end(); ++qit)
{
OSG::Real32 ax,ay,az,r;
(*qit).getValueAsAxisRad(ax,ay,az,r);
fprintf(file, "%f %f %f %f", ax, ay, az, r );
if(qit < animOri.end() - 1)
fprintf(file,", ");
}
fprintf(file,"]\n}\n\n");
std::vector<OSG::Vec3f>::iterator vit;
fprintf(file,"DEF PosInter PositionInterpolator {\n\tkey [");
for(size_t i = 0; i < animPos.size(); ++i)
{
fprintf(file, "%f", i / OSG::Real32(animPos.size() - 1) );
if(i < animPos.size() - 1)
fprintf(file,", ");
}
fprintf(file,"]\n\tkeyValue [");
for(vit = animPos.begin(); vit != animPos.end(); ++vit)
{
OSG::Vec3f v = *vit;
fprintf(file, "%f %f %f, ", v[0], v[1], v[2] );
}
fprintf(file,"]\n}\n\n");
fclose(file);
break;
}
case 'j':
if(sortfirst!=NULL)
{
sortfirst->setCompression("JPEG");
}
break;
case 'r':
if(sortfirst!=NULL)
{
sortfirst->setCompression("RLE");
}
break;
case 'n':
if(sortfirst!=NULL)
{
sortfirst->editCompression().erase();
}
break;
case 'i':
showInfo = !showInfo;
break;
case 'w':
if(polygonChunk->getFrontMode() == GL_FILL)
polygonChunk->setFrontMode(GL_LINE);
else
polygonChunk->setFrontMode(GL_FILL);
if(polygonChunk->getBackMode() == GL_FILL)
polygonChunk->setBackMode(GL_LINE);
else
polygonChunk->setBackMode(GL_FILL);
break;
case 'a':
if(animate)
{
glutIdleFunc(NULL);
animate=false;
}
else
{
glutIdleFunc(display);
animate=true;
}
frameCount = 0;
animTime = 0;
break;
case 'd':
// remove tree
while(root->getNChildren())
{
root->subChild(0u);
}
break;
case '+':
_dsFactor += 0.01f;
if(_dsFactor > 1.0f)
_dsFactor = 1.0f;
setHEyeWallParameter(_dsFactor, _enablecc);
break;
case '-':
_dsFactor -= 0.01f;
if(_dsFactor <= 0.0f)
_dsFactor = 0.01f;
setHEyeWallParameter(_dsFactor, _enablecc);
break;
case 'f':
if(_enablecc)
_enablecc = false;
else
_enablecc = true;
setHEyeWallParameter(_dsFactor, _enablecc);
break;
case 'B':
if(bkgnd->getColor()[0] == 0.0)
bkgnd->setColor( OSG::Color3f(1,1,1) );
else
bkgnd->setColor( OSG::Color3f(0,0,0) );
break;
case 27: // should kill the clients here
// exit
cleanup();
OSG::osgExit();
exit(0);
}
glutPostRedisplay();
}
int main(int argc, char *argv[])
{
// Init the OpenSG subsystem
OSG::osgInit(argc, argv);
{
// We create a GLUT Window (that is almost the same for most applications)
int winid = setupGLUT(&argc, argv);
OSG::GLUTWindowRecPtr gwin = OSG::GLUTWindow::create();
gwin->setGlutId(winid);
gwin->init();
// Create the face
std::string family = "SANS";
OSG::TextFace::Style style = OSG::TextFace::STYLE_PLAIN;
OSG::TextTXFParam txfParam;
txfParam.size = 46;
txfParam.gap = 1;
txfParam.setCharacters("Hello World!");
txfParam.textureWidth = 0;
OSG::TextTXFFaceRefPtr face =
OSG::TextTXFFace::create(family, style, txfParam);
if (face == 0)
{
std::cerr << "ERROR: Cannot create face object!" << std::endl;
return -1;
}
// Lay out one single line of text
std::string text = "Hello World!"; // Use UTF-8 encoding!
OSG::TextLayoutParam layoutParam;
layoutParam.horizontal = true;
layoutParam.leftToRight = true;
layoutParam.topToBottom = true;
layoutParam.majorAlignment = OSG::TextLayoutParam::ALIGN_FIRST;
layoutParam.minorAlignment = OSG::TextLayoutParam::ALIGN_FIRST;
layoutParam.spacing = 1.f;
layoutParam.length.push_back(0.f);
layoutParam.maxExtend = 0.f;
OSG::TextLayoutResult layoutResult;
face->layout(text, layoutParam, layoutResult);
// Create the text geometry
OSG::Real32 scale = 1.f;
OSG::NodeRecPtr scene = face->makeNode(layoutResult, scale);
// Get the texture that contains the characters of the font
OSG::ImageRecPtr image = face->getTexture();
// Create the texture that will hold the image
OSG::SimpleTexturedMaterialRecPtr tex =
OSG::SimpleTexturedMaterial::create();
tex->setImage(image);
tex->setEnvMode(GL_MODULATE);
tex->setDiffuse(OSG::Color3f(1, 0, 0));
// Assign the texture to the geometry
OSG::GeometryRecPtr geo =
dynamic_cast<OSG::Geometry *>(scene->getCore());
geo->setMaterial(tex);
// Create and setup the SSM
mgr = new OSG::SimpleSceneManager;
mgr->setWindow(gwin);
mgr->setRoot(scene);
// Create a blue background
OSG::SolidBackgroundRecPtr bg = OSG::SolidBackground::create();
bg->setColor(OSG::Color3f(0.1, 0.1, 0.5));
gwin->getPort(0)->setBackground(bg);
mgr->showAll();
OSG::commitChanges();
}
// Give Control to the GLUT Main Loop
glutMainLoop();
return 0;
}