// Initialize GLUT & OpenSG and set up the scene
int main(int argc, char **argv)
{
// OSG init
OSG::osgInit(argc,argv);
// GLUT init
int winid = setupGLUT(&argc, argv);
/*
open a new scope, because the pointers below should go out of scope
before entering glutMainLoop.
Otherwise OpenSG will complain about objects being alive after shutdown.
*/
{
// the connection between GLUT and OpenSG
OSG::GLUTWindowRefPtr gwin = OSG::GLUTWindow::create();
gwin->setGlutId(winid);
gwin->init();
/*
create the scene
In the previous example, the colors and positions used the same
indices. That might not always be the preferred way, and it might not
make sense for other properties, e.g. normals.
It is possible to assign a different index for every property. See the
indices section below for details.
The initial setup is the same as in 06indexgeometry
*/
OSG::GeoUInt8PropertyRefPtr type = OSG::GeoUInt8Property::create();
type->addValue(GL_POLYGON );
type->addValue(GL_TRIANGLES);
type->addValue(GL_QUADS );
OSG::GeoUInt32PropertyRefPtr lens = OSG::GeoUInt32Property::create();
lens->addValue(4);
lens->addValue(6);
lens->addValue(8);
// positions
OSG::GeoPnt3fPropertyRefPtr pnts = OSG::GeoPnt3fProperty::create();
// the base
pnts->addValue(OSG::Pnt3f(-1, -1, -1));
pnts->addValue(OSG::Pnt3f(-1, -1, 1));
pnts->addValue(OSG::Pnt3f( 1, -1, 1));
pnts->addValue(OSG::Pnt3f( 1, -1, -1));
// the roof base
pnts->addValue(OSG::Pnt3f(-1, 0, -1));
pnts->addValue(OSG::Pnt3f(-1, 0, 1));
pnts->addValue(OSG::Pnt3f( 1, 0, 1));
pnts->addValue(OSG::Pnt3f( 1, 0, -1));
// the gable
pnts->addValue(OSG::Pnt3f( 0, 1, -1));
pnts->addValue(OSG::Pnt3f( 0, 1, 1));
// colors
OSG::GeoVec3fPropertyRefPtr colors = OSG::GeoVec3fProperty::create();
colors->push_back(OSG::Color3f(1, 1, 0));
colors->push_back(OSG::Color3f(1, 0, 0));
colors->push_back(OSG::Color3f(1, 0, 0));
colors->push_back(OSG::Color3f(1, 1, 0));
colors->push_back(OSG::Color3f(0, 1, 1));
colors->push_back(OSG::Color3f(1, 0, 1));
/*
A new property: normals.
They are used for lighting calculations and have to point away from the
surface. Normals are standard vectors.
*/
OSG::GeoVec3fPropertyRefPtr norms = OSG::GeoVec3fProperty::create();
norms->push_back(OSG::Vec3f(-1, 0, 0));
norms->push_back(OSG::Vec3f( 1, 0, 0));
norms->push_back(OSG::Vec3f( 0, -1, 0));
norms->push_back(OSG::Vec3f( 0, 1, 0));
norms->push_back(OSG::Vec3f( 0, 0, -1));
norms->push_back(OSG::Vec3f( 0, 0, 1));
/*
To use more than one index for a geometry, create multiple
GeoUInt32Property (or GeoUInt8Property or GeoUInt16Property) objects
and add them as index for the corresponding property you want to
index.
*/
OSG::GeoUInt32PropertyRefPtr ind1 = OSG::GeoUInt32Property::create();
OSG::GeoUInt32PropertyRefPtr ind2 = OSG::GeoUInt32Property::create();
// fill first index (will be used for positions)
ind1->push_back(0); // polygon
ind1->push_back(1);
ind1->push_back(2);
ind1->push_back(3);
ind1->push_back(7); // triangle 1
ind1->push_back(4);
ind1->push_back(8);
ind1->push_back(5); // triangle 2
ind1->push_back(6);
ind1->push_back(9);
ind1->push_back(1); // quad 1
ind1->push_back(2);
ind1->push_back(6);
ind1->push_back(5);
ind1->push_back(3); // quad 2
ind1->push_back(0);
ind1->push_back(4);
ind1->push_back(7);
// fill second index (will be used for colors/normals)
ind2->push_back(3); // polygon
ind2->push_back(3);
ind2->push_back(3);
ind2->push_back(3);
ind2->push_back(4); // triangle 1
ind2->push_back(4);
ind2->push_back(4);
ind2->push_back(5); // triangle 2
ind2->push_back(5);
ind2->push_back(5);
ind2->push_back(5); // quad 1
ind2->push_back(5);
ind2->push_back(5);
ind2->push_back(5);
ind2->push_back(4); // quad 2
ind2->push_back(4);
ind2->push_back(4);
ind2->push_back(4);
/*
Put it all together into a Geometry NodeCore.
*/
OSG::GeometryRefPtr geo = OSG::Geometry::create();
geo->setTypes (type);
geo->setLengths (lens);
/*
Set the properties and indices used to index them.
Calling geo->setProperty(pnts, Geometry::PositionsIndex) is the
same as calling geo->setPositions(pnts), but this way it is
more obvious which properties and indices go together.
*/
geo->setProperty(pnts, OSG::Geometry::PositionsIndex);
geo->setIndex (ind1, OSG::Geometry::PositionsIndex);
geo->setProperty(norms, OSG::Geometry::NormalsIndex );
geo->setIndex (ind2, OSG::Geometry::NormalsIndex );
geo->setProperty(colors, OSG::Geometry::ColorsIndex );
geo->setIndex (ind2, OSG::Geometry::ColorsIndex );
geo->setMaterial (OSG::getDefaultMaterial());
// put the geometry core into a node
OSG::NodeRefPtr n = OSG::Node::create();
n->setCore(geo);
// add a transformation to make it move
OSG::NodeRefPtr scene = OSG::Node::create();
trans = OSG::Transform::create();
scene->setCore(trans);
scene->addChild(n);
OSG::commitChanges();
// create the SimpleSceneManager helper
mgr = OSG::SimpleSceneManager::create();
// tell the manager what to manage
mgr->setWindow(gwin );
mgr->setRoot (scene);
// show the whole scene
mgr->showAll();
}
// GLUT main loop
glutMainLoop();
return 0;
}
// Initialize GLUT & OpenSG and set up the scene
int main(int argc, char **argv)
{
// OSG init
OSG::osgInit(argc,argv);
// GLUT init
int winid = setupGLUT(&argc, argv);
// open a new scope, because the pointers below should go out of scope
// before entering glutMainLoop.
// Otherwise OpenSG will complain about objects being alive after shutdown.
{
// the connection between GLUT and OpenSG
OSG::GLUTWindowRefPtr gwin = OSG::GLUTWindow::create();
gwin->setGlutId(winid);
gwin->init();
// The scene group
OSG::NodeRefPtr scene = OSG::Node::create();
OSG::GroupRefPtr g = OSG::Group::create();
scene->setCore(g);
if(argc < 2)
{
FWARNING(("No file given!\n"));
FWARNING(("Supported file formats:\n"));
std::list<const char*> suffixes;
OSG::SceneFileHandler::the()->getSuffixList(suffixes);
for(std::list<const char*>::iterator it = suffixes.begin();
it != suffixes.end();
++it)
{
FWARNING(("%s\n", *it));
}
fileroot = OSG::makeTorus(.5, 2, 16, 16);
}
else
{
fileroot = OSG::SceneFileHandler::the()->read(argv[1]);
/*
All scene file loading is handled via the SceneFileHandler.
*/
}
scene->addChild(fileroot);
// Create a small geometry to show the ray and what was hit
// Contains a line and a single triangle.
// The line shows the ray, the triangle whatever was hit.
OSG::SimpleMaterialRefPtr red = OSG::SimpleMaterial::create();
red->setDiffuse (OSG::Color3f( 1,0,0 ));
red->setTransparency(0.5);
red->setLit (false);
isectPoints = OSG::GeoPnt3fProperty::create();
isectPoints->addValue(OSG::Pnt3f(0,0,0));
isectPoints->addValue(OSG::Pnt3f(0,0,0));
isectPoints->addValue(OSG::Pnt3f(0,0,0));
isectPoints->addValue(OSG::Pnt3f(0,0,0));
isectPoints->addValue(OSG::Pnt3f(0,0,0));
OSG::GeoUInt32PropertyRefPtr index = OSG::GeoUInt32Property::create();
index->addValue(0);
index->addValue(1);
index->addValue(2);
index->addValue(3);
index->addValue(4);
OSG::GeoUInt32PropertyRefPtr lens = OSG::GeoUInt32Property::create();
lens->addValue(2);
lens->addValue(3);
OSG::GeoUInt8PropertyRefPtr type = OSG::GeoUInt8Property::create();
type->addValue(GL_LINES);
type->addValue(GL_TRIANGLES);
testgeocore = OSG::Geometry::create();
testgeocore->setPositions(isectPoints);
testgeocore->setIndices(index);
testgeocore->setLengths(lens);
testgeocore->setTypes(type);
testgeocore->setMaterial(red);
OSG::NodeRefPtr testgeo = OSG::Node::create();
testgeo->setCore(testgeocore);
scene->addChild(testgeo);
// create the SimpleSceneManager helper
mgr = OSG::SimpleSceneManager::create();
// tell the manager what to manage
mgr->setWindow(gwin );
mgr->setRoot (scene);
// show the whole scene
mgr->showAll();
mgr->getCamera()->setNear(mgr->getCamera()->getNear() / 10);
// Show the bounding volumes? Not for now
mgr->getRenderAction()->setVolumeDrawing(false);
_idbuff = new IDbuffer();
_idbuff->setCamera(mgr->getCamera());
_idbuff->setRoot(scene);
}
// GLUT main loop
glutMainLoop();
return 0;
}