int init(int argc, char **argv)
{
OSG::osgInit(argc,argv);
// GLUT init
glutInit(&argc, argv);
glutInitDisplayMode( GLUT_RGBA | GLUT_DEPTH | GLUT_DOUBLE);
int winid = glutCreateWindow("OpenSG");
glutKeyboardFunc(key);
glutVisibilityFunc(vis);
glutReshapeFunc(reshape);
glutDisplayFunc(display);
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutIdleFunc(display);
// glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
// glEnable( GL_DEPTH_TEST );
// glEnable( GL_LIGHTING );
// glEnable( GL_LIGHT0 );
// glFrontFace(GL_CW);
glEnable(GL_CULL_FACE);
// OSG
OSG::SceneFileHandler::the()->print();
// 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();
OSG::DirectionalLightUnrecPtr dl = OSG::DirectionalLight::create();
dlight->setCore( dl );
// dlight->setCore( Group::create() );
dl->setAmbient( .0, .0, .0, 1 );
dl->setDiffuse( .8f, .8f, .8f, 1.f );
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 file = NULL;
if(argc > 1)
file = OSG::SceneFileHandler::the()->read(argv[1], NULL);
if ( file == NULL )
{
std::cerr << "Couldn't load file, ignoring" << std::endl;
file = OSG::makeSphere(4, 2.0);
}
#if 0
OSG::GeometryPtr pGeo = cast_dynamic<OSG::GeometryPtr>(file->getCore());
if(pGeo == NULL && file->getNChildren() != 0)
{
pGeo = cast_dynamic<OSG::GeometryPtr>(file->getChild(0)->getCore());
}
if(pGeo == NULL)
{
fprintf(stderr, "no geo\n");
}
#endif
// OSG::GraphOpRefPtr op = OSG::GraphOpFactory::the()->create("Stripe");
// op->traverse(file);
// createOptimizedPrimitives(pGeo);
// createSharedIndex(pGeo);
OSG::Thread::getCurrentChangeList()->commitChanges();
// file->dump();
file->updateVolume();
#if 0
const char *outFileName = "/tmp/foo1.osg";
OSG::IndentFileOutStream outFileStream(outFileName);
if( !outFileStream )
{
std::cerr << "Can not open output stream to file: "
<< outFileName << std::endl;
return -1;
}
std::cerr << "STARTING PRINTOUT:" << std::endl;
OSGWriter writer( outFileStream, 4 );
writer.write( file );
outFileStream.close();
OSG::SceneFileHandler::the()->write(file, "/tmp/foo.osb");
#endif
// return 0;
OSG::Vec3f min,max;
file->getVolume().getBounds( min, max );
std::cout << "Volume: from " << min << " to " << max << std::endl;
OSG::MultiCoreUnrecPtr pMCore = OSG::MultiCore::create();
pCOver = OSG::ChunkOverrideGroup::create();
scene_trans = OSG::Transform::create();
pMCore->addCore(scene_trans);
pMCore->addCore(pCOver );
OSG::NodeUnrecPtr sceneTrN = OSG::Node::create();
sceneTrN->setCore(pMCore);
sceneTrN->addChild(file);
dlight->addChild(sceneTrN);
std::cerr << "Tree: " << std::endl;
// root->dump();
// Camera
cam = OSG::PerspectiveCamera::create();
cam->setBeacon( b1n );
cam->setFov( OSG::osgDegree2Rad( 90 ) );
cam->setNear( 0.1f );
cam->setFar( 100000 );
// Background
OSG::SolidBackgroundUnrecPtr bkgnd = OSG::SolidBackground::create();
bkgnd->setColor(OSG::Color3f(1,0,0));
// Viewport
vp = OSG::Viewport::create();
vp->setCamera( cam );
vp->setBackground( bkgnd );
vp->setRoot( root );
vp->setSize( 0,0, 1,1 );
#if 0
OSG::UInt8 imgdata[] =
{
64,64,64, 128,128,128, 192,192,192, 255,255,255
};
#endif
pImg = OSG::Image::create();
pImg->set(OSG::Image::OSG_RGB_PF, 128, 128); //, 1, 1, 1, 0.0, imgdata);
tx1o = OSG::TextureObjChunk::create();
tx1e = OSG::TextureEnvChunk::create();
tx1o->setImage (pImg );
tx1o->setMinFilter(GL_LINEAR );
tx1o->setMagFilter(GL_LINEAR );
tx1o->setWrapS (GL_CLAMP );
tx1o->setWrapT (GL_CLAMP );
tx1e->setEnvMode (GL_REPLACE);
OSG::SimpleMaterialUnrecPtr mat = OSG::SimpleMaterial::create();
mat->setDiffuse(OSG::Color3f(1,1,1));
mat->setLit (false );
mat->addChunk (tx1o );
mat->addChunk (tx1e );
OSG::PolygonForegroundUnrecPtr pFG = OSG::PolygonForeground::create();
pFG->setMaterial(mat);
OSG::MFPnt2f *pPos = pFG->editMFPositions();
OSG::MFVec3f *pTex = pFG->editMFTexCoords();
pPos->push_back(OSG::Pnt2f(0.0f, 0.0f));
pPos->push_back(OSG::Pnt2f(0.3f, 0.0f));
pPos->push_back(OSG::Pnt2f(0.3f, 0.3f));
pPos->push_back(OSG::Pnt2f(0.0f, 0.3f));
pTex->push_back(OSG::Vec3f(0.0f, 1.0f, 0.0f));
pTex->push_back(OSG::Vec3f(1.0f, 1.0f, 0.0f));
pTex->push_back(OSG::Vec3f(1.0f, 0.0f, 0.0f));
pTex->push_back(OSG::Vec3f(0.0f, 0.0f, 0.0f));
vp->addForeground(pFG);
OSG::SimpleMaterialUnrecPtr matFgCheck = OSG::SimpleMaterial::create();
matFgCheck->setDiffuse(OSG::Color3f(0,1,0));
matFgCheck->setLit (false );
OSG::PolygonForegroundUnrecPtr pFGCheck = OSG::PolygonForeground::create();
pFGCheck->setMaterial(matFgCheck);
pPos = pFGCheck->editMFPositions();
pPos->push_back(OSG::Pnt2f(0.6f, 0.0f));
pPos->push_back(OSG::Pnt2f(0.9f, 0.0f));
pPos->push_back(OSG::Pnt2f(0.9f, 0.3f));
pPos->push_back(OSG::Pnt2f(0.6f, 0.3f));
vp->addForeground(pFG);
vp->addForeground(pFGCheck);
// vp->dump();
// Background
OSG::SolidBackgroundUnrecPtr bkgndFBO = OSG::SolidBackground::create();
bkgndFBO->setColor(OSG::Color3f(1.0,0.5,0.5));
// Viewport
vpFBO = OSG::FBOViewport::create();
vpFBO->setCamera (cam );
vpFBO->setBackground(bkgndFBO );
vpFBO->setRoot (root );
vpFBO->setSize (0, 0, 1, 1);
vpFBO->addForeground(pFGCheck);
OSG::FrameBufferObjectUnrecPtr pFBO = OSG::FrameBufferObject::create();
pTexBuffer = OSG::TextureBuffer::create();
OSG::RenderBufferUnrecPtr pDepthBuffer = OSG::RenderBuffer ::create();
pDepthBuffer->setInternalFormat(GL_DEPTH_COMPONENT24 );
pTexBuffer->setTexture(tx1o);
pFBO->setSize(128, 128);
pFBO->setColorAttachment(pTexBuffer, 0);
pFBO->setDepthAttachment(pDepthBuffer );
pFBO->editMFDrawBuffers()->clear();
pFBO->editMFDrawBuffers()->push_back(GL_COLOR_ATTACHMENT0_EXT);
vpFBO->setFrameBufferObject(pFBO);
// Window
std::cout << "GLUT winid: " << winid << std::endl;
GLint glvp[4];
glGetIntegerv( GL_VIEWPORT, glvp );
gwin = OSG::GLUTWindow::create();
gwin->setGlutId(winid);
gwin->setSize( glvp[2], glvp[3] );
win = gwin;
win->addPort(vpFBO );
win->addPort(vp );
win->init();
// Action
rentravact = OSG::RenderAction::create();
// renact->setFrustumCulling(false);
// tball
OSG::Vec3f pos;
pos.setValues(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;
OSG::Pnt3f tCenter(min[0] + (max[0] - min[0]) / 2,
min[1] + (max[1] - min[1]) / 2,
min[2] + (max[2] - min[2]) / 2);
fprintf(stderr, "Startpos : %f %f %f\n", pos[0], pos[1], pos[2]);
tball.setMode( OSG::Trackball::OSGObject );
tball.setStartPosition( pos, true );
tball.setSum( true );
tball.setTranslationMode( OSG::Trackball::OSGFree );
tball.setTranslationScale(scale);
tball.setRotationCenter(tCenter);
// run...
pPoly = OSG::PolygonChunk::create();
pCOver->subChunk(pPoly);
return 0;
}
// Setup the part of the scene rooted at animRoot
// This includes a file to animate, a beacon for a light,
// and a staged core to render this subtree from the position
// of the light.
void initAnimSetup(int argc, char **argv)
{
// beacon for light and stage camera
OSG::GroupNodeRefPtr beacon = OSG::GroupNodeRefPtr::create();
// transformation for beacon
cam_transScene = OSG::TransformNodeRefPtr::create();
cam_transScene.node()->addChild(beacon);
// light
OSG::DirectionalLightNodeRefPtr dlight =
OSG::DirectionalLightNodeRefPtr::create();
dlight->setAmbient (.3f, .3f, .3f, 1);
dlight->setDiffuse ( 1, 1, 1, 1);
dlight->setDirection( 0, 0, 1 );
dlight->setBeacon (beacon );
// animRoot
animRoot = OSG::GroupNodeRefPtr::create();
animRoot.node()->addChild(cam_transScene );
// Load the file and put it in the graph
// under the sceneXform node.
OSG::NodeUnrecPtr 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::Vec3f min,max;
OSG::commitChanges();
file->updateVolume();
file->dump();
file->getVolume().getBounds(min, max);
std::cout << "Volume: from " << min << " to " << max << std::endl;
sceneTrans.setValues(min[0] + ((max[0] - min[0]) * 0.5),
min[1] + ((max[1] - min[1]) * 0.5),
max[2] + ( max[2] - min[2]) * 4.5 );
sceneXform = OSG::TransformNodeRefPtr::create();
sceneXform.node()->addChild(file);
OSG::NodeUnrecPtr pBoxNode = OSG::makeBox(1, 1, 1, 5, 5, 5);
pBoxNode->setTravMask(pBoxNode->getTravMask() & 0x0001);
sceneXform.node()->addChild(pBoxNode);
dlight.node()->addChild(sceneXform);
// ---- STAGE RENDERING SETUP --- //
// Camera: setup camera to point from beacon (light pos)
// with a 90deg FOV to render the scene
OSG::PerspectiveCameraUnrecPtr stage_cam = OSG::PerspectiveCamera::create();
stage_cam->setBeacon(beacon);
stage_cam->setFov (OSG::osgDegree2Rad(90));
stage_cam->setNear (0.1f);
stage_cam->setFar (100000);
// Background
OSG::SolidBackgroundUnrecPtr bkgnd = OSG::SolidBackground::create();
bkgnd->setColor(OSG::Color3f(0,1,0));
// FBO setup
pFBO = OSG::FrameBufferObject::create();
pTexBuffer = OSG::TextureBuffer::create();
#ifdef USE_DEPTH_TEXTURE
OSG::TextureBufferUnrecPtr pDepthBuffer = OSG::TextureBuffer::create();
pDepthBuffer->setTexture(txDepth);
#else
OSG::RenderBufferUnrecPtr pDepthBuffer = OSG::RenderBuffer ::create();
pDepthBuffer->setInternalFormat(GL_DEPTH_COMPONENT24 );
#endif
pTexBuffer->setTexture (tx1o);
pTexBuffer->setReadBack(true);
pFBO->setSize(512, 512);
pFBO->setColorAttachment(pTexBuffer, 0);
pFBO->setDepthAttachment(pDepthBuffer );
pFBO->editMFDrawBuffers()->clear();
pFBO->editMFDrawBuffers()->push_back(GL_COLOR_ATTACHMENT0_EXT);
// Stage core setup
OSG::SimpleStageNodeRefPtr pStage = OSG::SimpleStageNodeRefPtr::create();
pStage->setRenderTarget(pFBO );
pStage->setCamera (stage_cam );
pStage->setBackground (bkgnd);
pStage->addPreRenderFunctor (&testPreRenderCB, "" );
pStage->addPostRenderFunctor(&testPostRenderCB, "");
// Setup sub-tree visitor
// - This will setup a graph that will render a subtree during traversal
pVisit = OSG::VisitSubTreeNodeRefPtr::create();
pVisit->setSubTreeRoot(dlight);
pStage.node()->addChild(pVisit);
animRoot.node()->addChild(pStage);
animRoot.node()->addChild(dlight);
}