FGFS-4.1/OpenSceneGraph
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Ported osgmotionblurr across to osgViewer

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This commit is contained in:
Robert Osfield
2007-01-11 17:15:04 +00:00
parent b961179d83
commit 041482ca46
5 changed files with 23 additions and 82 deletions
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2
examples/osgmotionblur/GNUmakefile
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@@ -4,7 +4,7 @@ include $(TOPDIR)/Make/makedefs
CXXFILES =\
osgmotionblur.cpp\
LIBS += -losgProducer -lProducer -losgText -losgGA -losgDB -losgUtil -losg $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
LIBS += -losgViewer -losgText -losgGA -losgDB -losgUtil -losg $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
INSTFILES = \
$(CXXFILES)\

2
examples/osgmotionblur/GNUmakefile.inst
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@@ -4,7 +4,7 @@ include $(TOPDIR)/Make/makedefs
CXXFILES =\
osgmotionblur.cpp\
LIBS += -losgProducer -lProducer -losgDB -losgText -losgUtil -losg $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
LIBS += -losgViewer -losgDB -losgText -losgUtil -losg $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
EXEC = osgmotionblur

91
examples/osgmotionblur/osgmotionblur.cpp
View File

@@ -11,20 +11,22 @@
#include <osgDB/ReadFile>
#include <osgUtil/Optimizer>
#include <osgProducer/Viewer>
#include <osgViewer/Viewer>
#include <iostream>
class MotionBlurDrawCallback: public osgProducer::OsgSceneHandler::Callback
class MotionBlurOperation: public osg::GraphicsOperation
{
public:
MotionBlurDrawCallback(double persistence)
: cleared_(false),
MotionBlurOperation(double persistence):
osg::GraphicsOperation("MotionBlur",true),
cleared_(false),
persistence_(persistence)
{
}
virtual void operator()(osgProducer::OsgSceneHandler &handler, Producer::Camera &camera)
virtual void operator () (osg::GraphicsContext* gc)
{
double t = handler.getSceneView()->getFrameStamp()->getReferenceTime();
double t = gc->getState()->getFrameStamp()->getReferenceTime();
if (!cleared_)
{
@@ -38,9 +40,6 @@ public:
double dt = fabs(t - t0_);
t0_ = t;
// call the scene handler's draw function
handler.drawImplementation(camera);
// compute the blur factor
double s = powf(0.2, dt / persistence_);
@@ -72,13 +71,7 @@ int main( int argc, char **argv )
// construct the viewer.
osgProducer::Viewer viewer(arguments);
// set up the value with sensible default event handlers.
viewer.setUpViewer(osgProducer::Viewer::STANDARD_SETTINGS);
// get details on keyboard and mouse bindings used by the viewer.
viewer.getUsage(*arguments.getApplicationUsage());
osgViewer::Viewer viewer;
// if user request help write it out to cout.
if (arguments.read("-h") || arguments.read("--help"))
@@ -90,21 +83,6 @@ int main( int argc, char **argv )
double persistence = 0.25;
arguments.read("-P", persistence) || arguments.read("--persistence", persistence);
// report any errors if they have occured when parsing the program aguments.
if (arguments.errors())
{
arguments.writeErrorMessages(std::cout);
return 1;
}
if (arguments.argc()<=1)
{
arguments.getApplicationUsage()->write(std::cout,osg::ApplicationUsage::COMMAND_LINE_OPTION);
return 1;
}
osg::Timer_t start_tick = osg::Timer::instance()->tick();
// read the scene from the list of file specified commandline args.
osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFiles(arguments);
@@ -115,61 +93,24 @@ int main( int argc, char **argv )
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);
}
osg::Timer_t end_tick = osg::Timer::instance()->tick();
std::cout << "Time to load = "<<osg::Timer::instance()->delta_s(start_tick,end_tick)<<std::endl;
// set the display settings we can to request, OsgCameraGroup will read this.
osg::DisplaySettings::instance()->setMinimumNumAccumBits(8,8,8,8);
// optimize the scene graph, remove rendundent nodes and state etc.
osgUtil::Optimizer optimizer;
optimizer.optimize(loadedModel.get());
// pass the loaded scene graph to the viewer.
viewer.setSceneData(loadedModel.get());
// create the windows and run the threads.
viewer.realize();
// set our motion blur callback as the draw callback for each scene handler
osgProducer::Viewer::SceneHandlerList &shl = viewer.getSceneHandlerList();
for (osgProducer::Viewer::SceneHandlerList::iterator i=shl.begin(); i!=shl.end(); ++i)
osgViewer::Viewer::Windows windows;
viewer.getWindows(windows);
for(osgViewer::Viewer::Windows::iterator itr = windows.begin();
itr != windows.end();
++itr)
{
(*i)->setDrawCallback(new MotionBlurDrawCallback(persistence));
(*itr)->add(new MotionBlurOperation(persistence));
}
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.
viewer.sync();
// run a clean up frame to delete all OpenGL objects.
viewer.cleanup_frame();
// wait for all the clean up frame to complete.
viewer.sync();
return 0;
return viewer.run();
}