249 lines
8.7 KiB
C++
249 lines
8.7 KiB
C++
#include <osg/MatrixTransform>
|
|
#include <osg/Billboard>
|
|
#include <osg/Geode>
|
|
#include <osg/Group>
|
|
#include <osg/Notify>
|
|
#include <osg/Texture>
|
|
|
|
#include <osgDB/Registry>
|
|
#include <osgDB/ReadFile>
|
|
#include <osgDB/WriteFile>
|
|
|
|
#include <osgProducer/Viewer>
|
|
|
|
#include <osgUtil/Optimizer>
|
|
|
|
using namespace osg;
|
|
|
|
// Customize the CopyOp so that we add our own verbose
|
|
// output of what's being copied.
|
|
class MyCopyOp : public osg::CopyOp
|
|
{
|
|
public:
|
|
|
|
inline MyCopyOp(CopyFlags flags=SHALLOW_COPY):
|
|
osg::CopyOp(flags),
|
|
_indent(0),
|
|
_step(4) {}
|
|
|
|
inline void moveIn() const { _indent += _step; }
|
|
inline void moveOut() const { _indent -= _step; }
|
|
inline void writeIndent() const
|
|
{
|
|
for(int i=0;i<_indent;++i) std::cout << " ";
|
|
}
|
|
|
|
virtual osg::Referenced* operator() (const osg::Referenced* ref) const
|
|
{
|
|
writeIndent(); std::cout << "copying Referenced "<<ref<<std::endl;
|
|
moveIn();
|
|
osg::Referenced* ret_ref = CopyOp::operator()(ref);
|
|
moveOut();
|
|
return ret_ref;
|
|
}
|
|
|
|
virtual osg::Object* operator() (const osg::Object* obj) const
|
|
{
|
|
writeIndent(); std::cout << "copying Object "<<obj;
|
|
if (obj) std::cout<<" "<<obj->className();
|
|
std::cout<<std::endl;
|
|
moveIn();
|
|
osg::Object* ret_obj = CopyOp::operator()(obj);
|
|
moveOut();
|
|
return ret_obj;
|
|
}
|
|
|
|
virtual osg::Node* operator() (const osg::Node* node) const
|
|
{
|
|
writeIndent(); std::cout << "copying Node "<<node;
|
|
if (node) std::cout<<" "<<node->className()<<" '"<<node->getName()<<"'";
|
|
std::cout<<std::endl;
|
|
moveIn();
|
|
osg::Node* ret_node = CopyOp::operator()(node);
|
|
moveOut();
|
|
return ret_node;
|
|
}
|
|
|
|
virtual osg::Drawable* operator() (const osg::Drawable* drawable) const
|
|
{
|
|
writeIndent(); std::cout << "copying Drawable "<<drawable;
|
|
if (drawable) std::cout<<" "<<drawable->className();
|
|
std::cout<<std::endl;
|
|
moveIn();
|
|
osg::Drawable* ret_drawable = CopyOp::operator()(drawable);
|
|
moveOut();
|
|
return ret_drawable;
|
|
}
|
|
|
|
virtual osg::StateSet* operator() (const osg::StateSet* stateset) const
|
|
{
|
|
writeIndent(); std::cout << "copying StateSet "<<stateset;
|
|
if (stateset) std::cout<<" "<<stateset->className();
|
|
std::cout<<std::endl;
|
|
moveIn();
|
|
osg::StateSet* ret_stateset = CopyOp::operator()(stateset);
|
|
moveOut();
|
|
return ret_stateset;
|
|
}
|
|
|
|
virtual osg::StateAttribute* operator() (const osg::StateAttribute* attr) const
|
|
{
|
|
writeIndent(); std::cout << "copying StateAttribute "<<attr;
|
|
if (attr) std::cout<<" "<<attr->className();
|
|
std::cout<<std::endl;
|
|
moveIn();
|
|
osg::StateAttribute* ret_attr = CopyOp::operator()(attr);
|
|
moveOut();
|
|
return ret_attr;
|
|
}
|
|
|
|
virtual osg::Texture* operator() (const osg::Texture* text) const
|
|
{
|
|
writeIndent(); std::cout << "copying Texture "<<text;
|
|
if (text) std::cout<<" "<<text->className();
|
|
std::cout<<std::endl;
|
|
moveIn();
|
|
osg::Texture* ret_text = CopyOp::operator()(text);
|
|
moveOut();
|
|
return ret_text;
|
|
}
|
|
|
|
virtual osg::Image* operator() (const osg::Image* image) const
|
|
{
|
|
writeIndent(); std::cout << "copying Image "<<image;
|
|
if (image) std::cout<<" "<<image->className();
|
|
std::cout<<std::endl;
|
|
moveIn();
|
|
osg::Image* ret_image = CopyOp::operator()(image);
|
|
moveOut();
|
|
return ret_image;
|
|
}
|
|
|
|
protected:
|
|
|
|
// must be mutable since CopyOp is passed around as const to
|
|
// the various clone/copy constructors.
|
|
mutable int _indent;
|
|
mutable int _step;
|
|
};
|
|
|
|
int main( int argc, char **argv )
|
|
{
|
|
// use an ArgumentParser object to manage the program arguments.
|
|
osg::ArgumentParser arguments(&argc,argv);
|
|
|
|
// set up the usage document, in case we need to print out how to use this program.
|
|
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getProgramName()+" [options] filename ...");
|
|
arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
|
|
|
|
// initialize the viewer.
|
|
osgProducer::Viewer viewer(arguments);
|
|
|
|
// if user request help write it out to cout.
|
|
if (arguments.read("-h") || arguments.read("--help"))
|
|
{
|
|
arguments.getApplicationUsage()->write(std::cout);
|
|
return 1;
|
|
}
|
|
|
|
// any option left unread are converted into errors to write out later.
|
|
arguments.reportRemainingOptionsAsUnrecognized();
|
|
|
|
// report any errors if they have occured when parsing the program aguments.
|
|
if (arguments.errors())
|
|
{
|
|
arguments.writeErrorMessages(std::cout);
|
|
return 1;
|
|
}
|
|
|
|
// load the nodes from the commandline arguments.
|
|
osg::Node* rootnode = osgDB::readNodeFiles(arguments);
|
|
if (!rootnode)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
// run optimization over the scene graph
|
|
osgUtil::Optimizer optimzer;
|
|
optimzer.optimize(rootnode);
|
|
|
|
// ------------- Start of copy specific code -------------------------------------------------------
|
|
|
|
// do a deep copy, using MyCopyOp to reveal whats going on under the good,
|
|
// in your own code you'd typically just use the basic osg::CopyOp something like
|
|
// osg::Node* mycopy = dynamic_cast<osg::Node*>(rootnode->clone(osg::CopyOp::DEEP_COPY_ALL));
|
|
std::cout << "Doing a deep copy of scene graph"<<std::endl;
|
|
// note, we need the dyanmic_cast because MS Visual Studio can't handle covarient
|
|
// return types, so that clone has return just Object*. bahh hum bug
|
|
osg::Node* deep_copy = dynamic_cast<osg::Node*>(rootnode->clone(MyCopyOp(osg::CopyOp::DEEP_COPY_ALL)));
|
|
|
|
std::cout << "----------------------------------------------------------------"<<std::endl;
|
|
|
|
// do a shallow copy.
|
|
std::cout << "Doing a shallow copy of scene graph"<<std::endl;
|
|
osg::Node* shallow_copy = dynamic_cast<osg::Node*>(rootnode->clone(MyCopyOp(osg::CopyOp::SHALLOW_COPY)));
|
|
|
|
|
|
// write out the various scene graphs so that they can be browsed, either
|
|
// in an editor or using a graphics diff tool gdiff/xdiff/xxdiff.
|
|
std::cout << std::endl << "Writing out the original scene graph as 'original.osg'"<<std::endl;
|
|
osgDB::writeNodeFile(*rootnode,"original.osg");
|
|
|
|
std::cout << "Writing out the deep copied scene graph as 'deep_copy.osg'"<<std::endl;
|
|
osgDB::writeNodeFile(*deep_copy,"deep_copy.osg");
|
|
|
|
std::cout << "Writing out the shallow copied scene graph as 'shallow_copy.osg'"<<std::endl;
|
|
osgDB::writeNodeFile(*shallow_copy,"shallow_copy.osg");
|
|
|
|
|
|
// You can use a bit mask to control which parts of the scene graph are shallow copied
|
|
// vs deep copied. The options are (from include/osg/CopyOp) :
|
|
// enum Options {
|
|
// SHALLOW_COPY = 0,
|
|
// DEEP_COPY_OBJECTS = 1,
|
|
// DEEP_COPY_NODES = 2,
|
|
// DEEP_COPY_DRAWABLES = 4,
|
|
// DEEP_COPY_STATESETS = 8,
|
|
// DEEP_COPY_STATEATTRIBUTES = 16,
|
|
// DEEP_COPY_TEXTURES = 32,
|
|
// DEEP_COPY_IMAGES = 64,
|
|
// DEEP_COPY_ALL = 0xffffffff
|
|
// };
|
|
//
|
|
// These options you can use together such as :
|
|
// osg::Node* mycopy = dynamic_cast<osg::Node*>(rootnode->clone(osg::CopyOp::DEEP_COPY_NODES | DEEP_COPY_DRAWABLES));
|
|
// Which shares state but creates copies of all nodes and drawables (which contain the geometry).
|
|
//
|
|
// You may also want to subclass from CopyOp to provide finer grained control of what gets shared (shallow copy) vs
|
|
// cloned (deep copy).
|
|
|
|
|
|
|
|
// ------------- End of copy specific code -------------------------------------------------------
|
|
|
|
// set the scene to render
|
|
viewer.setSceneData(rootnode);
|
|
|
|
// create the windows and run the threads.
|
|
viewer.realize(Producer::CameraGroup::ThreadPerCamera);
|
|
|
|
while( !viewer.done() )
|
|
{
|
|
// wait for all cull and draw threads to complete.
|
|
viewer.sync();
|
|
|
|
// update the scene by traversing it with the the update visitor which will
|
|
// call all node update callbacks and animations.
|
|
viewer.update();
|
|
|
|
// fire off the cull and draw traversals of the scene.
|
|
viewer.frame();
|
|
|
|
}
|
|
|
|
// wait for all cull and draw threads to complete before exit.
|
|
viewer.sync();
|
|
|
|
return 0;
|
|
}
|