FGFS-4.1/OpenSceneGraph
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Added multiple view support to osgautotransform for testing multi-views

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This commit is contained in:
Robert Osfield
2017-04-25 20:26:26 +01:00
parent a4b0dc7426
commit 3869714005
1 changed files with 91 additions and 6 deletions
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97
examples/osgautotransform/osgautotransform.cpp
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@@ -18,7 +18,9 @@
#include <osgUtil/Optimizer>
#include <osgDB/ReadFile>
#include <osgViewer/Viewer>
#include <osgGA/TrackballManipulator>
#include <osgViewer/ViewerEventHandlers>
#include <osgViewer/CompositeViewer>
#include <osg/Material>
#include <osg/Geode>
@@ -193,13 +195,96 @@ osg::Node* createScene()
return root;
}
int main(int, char**)
osgViewer::View* createView(osg::ref_ptr<osg::Node> scenegraph, osg::ref_ptr<osg::GraphicsContext> gc, unsigned int x, unsigned int y, unsigned int width, unsigned int height)
{
// construct the viewer.
osgViewer::Viewer viewer;
OSG_NOTICE<<"createView(....,x="<<x<<", y="<<y<<", width="<<width<<", height="<<height<<")"<<std::endl;
// set the scene to render
viewer.setSceneData(createScene());
osgViewer::View* view = new osgViewer::View;
view->getCamera()->setGraphicsContext(gc);
view->getCamera()->setViewport(new osg::Viewport(x, y, width, height));
//view->getCamera()->setProjectionMatrixAsPerspective(30.0, double(width) / double(height), 1.0, 1000.0);
view->setCameraManipulator(new osgGA::TrackballManipulator);
view->setSceneData(scenegraph);
return view;
}
int main(int argc, char** argv)
{
osg::ArgumentParser arguments(&argc, argv);
// construct the viewer.
osgViewer::CompositeViewer viewer(arguments);
// create the scene graph that contains osg::AutoTransform nodes, see about for implementation details
osg::ref_ptr<osg::Node> scenegraph = createScene();
unsigned int numViews = 1;
while (arguments.read("-n",numViews)) {}
if (numViews<=1)
{
osgViewer::View* view = new osgViewer::View;
view->setUpViewAcrossAllScreens();
view->setSceneData(scenegraph.get());
view->setCameraManipulator(new osgGA::TrackballManipulator);
view->addEventHandler( new osgViewer::StatsHandler );
viewer.addView(view);
}
else
{
osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
if (!wsi)
{
osg::notify(osg::NOTICE)<<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
return 1;
}
unsigned int width, height;
wsi->getScreenResolution(osg::GraphicsContext::ScreenIdentifier(0), width, height);
unsigned int x=0, y=0;
while(arguments.read("--window", x, y, width, height)) {}
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
traits->x = x;
traits->y = y;
traits->width = width;
traits->height = height;
traits->windowDecoration = true;
traits->doubleBuffer = true;
traits->sharedContext = 0;
osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
if (!gc)
{
osg::notify(osg::NOTICE)<<" GraphicsWindow has not been created successfully."<<std::endl;
return 1;
}
if (numViews==2)
{
viewer.addView(createView(scenegraph, gc, 0, 0, width/2, height));
viewer.addView(createView(scenegraph, gc, width/2, 0, width/2, height));
}
else if (numViews==3)
{
viewer.addView(createView(scenegraph, gc, 0, 0, width/2, height/2));
viewer.addView(createView(scenegraph, gc, width/2, 0, width/2, height/2));
viewer.addView(createView(scenegraph, gc, 0, height/2, width, height/2));
}
else
{
viewer.addView(createView(scenegraph, gc, 0, 0, width/2, height/2));
viewer.addView(createView(scenegraph, gc, width/2, 0, width/2, height/2));
viewer.addView(createView(scenegraph, gc, 0, height/2, width/2, height/2));
viewer.addView(createView(scenegraph, gc, width/2, height/2, width/2, height/2));
}
viewer.getView(0)->addEventHandler( new osgViewer::StatsHandler );
}
// run the viewers frame loop
return viewer.run();