FGFS-4.1/OpenSceneGraph
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Added support for correct sizing of the created presentation w.r.t the

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size of the scene, a default home position, handling of <ratio> field
in the slideshow xml file, and support for stereo image pairs.
This commit is contained in:
Robert Osfield
2003-09-15 13:54:19 +00:00
parent c1d2d67d66
commit 3ae5b72030
7 changed files with 246 additions and 204 deletions
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90
examples/slideshow3D/slideshow3D.cpp
View File

@@ -13,11 +13,65 @@
#include <osgDB/ReadFile>
#include <osgUtil/Optimizer>
#include <osgProducer/Viewer>
#include <osgGA/TrackballManipulator>
#include "SlideEventHandler.h"
#include "PointsEventHandler.h"
#include "SlideShowConstructor.h"
class FindHomePositionVisitor : public osg::NodeVisitor
{
public:
FindHomePositionVisitor():
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN) {}
void apply(osg::Node& node)
{
SlideShowConstructor::HomePosition* homePosition = dynamic_cast<SlideShowConstructor::HomePosition*>(node.getUserData());
if (homePosition)
{
_homePosition = homePosition;
}
traverse(node);
}
osg::ref_ptr<SlideShowConstructor::HomePosition> _homePosition;
};
class SlideShowTrackballManipulator : public osgGA::TrackballManipulator
{
public:
SlideShowTrackballManipulator()
{
}
virtual void home(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& us)
{
FindHomePositionVisitor fhpv;
if (_node.valid()) _node->accept(fhpv);
if (fhpv._homePosition.valid())
{
computePosition(fhpv._homePosition->eye,
fhpv._homePosition->center,
fhpv._homePosition->up);
us.requestRedraw();
}
else
{
TrackballManipulator::home(ea,us);
}
}
};
extern osg::Node* createDefaultPresentation();
int main( int argc, char **argv )
{
@@ -37,8 +91,18 @@ 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);
SlideShowTrackballManipulator* sstbm = new SlideShowTrackballManipulator;
viewer.addCameraManipulator(sstbm);
// set up the value with sensible default event handler.
viewer.setUpViewer(osgProducer::Viewer::DRIVE_MANIPULATOR |
osgProducer::Viewer::FLIGHT_MANIPULATOR |
osgProducer::Viewer::STATE_MANIPULATOR |
osgProducer::Viewer::HEAD_LIGHT_SOURCE |
osgProducer::Viewer::STATS_MANIPULATOR |
osgProducer::Viewer::VIEWER_MANIPULATOR |
osgProducer::Viewer::ESCAPE_SETS_DONE);
// read any time delay argument.
float timeDelayBetweenSlides = 1.5f;
@@ -84,13 +148,6 @@ int main( int argc, char **argv )
// read the scene from the list of file specified commandline args.
osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFiles(arguments);
// // if no model loaded create a default presentation.
// if (!loadedModel)
// {
// loadedModel = createDefaultPresentation();
// }
// if no model has been successfully loaded report failure.
if (!loadedModel)
{
@@ -112,6 +169,7 @@ int main( int argc, char **argv )
// set the scene to render
viewer.setSceneData(loadedModel.get());
// pass the global stateset to the point event handler so that it can
// alter the point size of all points in the scene.
peh->setStateSet(viewer.getGlobalStateSet());
@@ -119,6 +177,18 @@ int main( int argc, char **argv )
// create the windows and run the threads.
viewer.realize();
// set all the sceneview's up so that their left and right add cull masks are set up.
for(osgProducer::OsgCameraGroup::SceneHandlerList::iterator itr=viewer.getSceneHandlerList().begin();
itr!=viewer.getSceneHandlerList().end();
++itr)
{
osgUtil::SceneView* sceneview = (*itr)->getSceneView();
sceneview->setCullMask(0xffffffff);
sceneview->setCullMaskLeft(0x00000001);
sceneview->setCullMaskRight(0x00000002);
// sceneview->setFusionDistance(osgUtil::SceneView::USE_FUSION_DISTANCE_VALUE,radius);
}
while( !viewer.done() )
{
// wait for all cull and draw threads to complete.