root/OpenSceneGraph/trunk/examples/osgmultiviewpaging/osgmultiviewpaging.cpp @ 13612

Revision 12292, 7.0 kB (checked in by robert, 4 years ago)

Ran svn propset -R svn:eol-style native . on the OpenSceneGraph

  • Property svn:eol-style set to native
Line 
1/* OpenSceneGraph example, osgcompositeviewer.
2*
3*  Permission is hereby granted, free of charge, to any person obtaining a copy
4*  of this software and associated documentation files (the "Software"), to deal
5*  in the Software without restriction, including without limitation the rights
6*  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7*  copies of the Software, and to permit persons to whom the Software is
8*  furnished to do so, subject to the following conditions:
9*
10*  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
11*  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
12*  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
13*  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
14*  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
15*  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
16*  THE SOFTWARE.
17*/
18
19#include <iostream>
20
21#include <osgUtil/Optimizer>
22#include <osgDB/ReadFile>
23
24#include <osg/Material>
25#include <osg/Geode>
26#include <osg/BlendFunc>
27#include <osg/Depth>
28#include <osg/Projection>
29#include <osg/PolygonOffset>
30#include <osg/MatrixTransform>
31#include <osg/Camera>
32#include <osg/FrontFace>
33
34#include <osgText/Text>
35
36#include <osgGA/TerrainManipulator>
37#include <osgGA/FlightManipulator>
38#include <osgGA/StateSetManipulator>
39#include <osgViewer/ViewerEventHandlers>
40
41#include <osgViewer/CompositeViewer>
42
43#include <osg/io_utils>
44
45class MyPager : public osgDB::DatabasePager
46{
47public:
48 virtual void updateSceneGraph(const osg::FrameStamp& frameStamp)
49 {
50   if (frameStamp.getFrameNumber() % 60 == 0)
51   {
52     osg::Timer_t start = osg::Timer::instance()->tick();
53     osgDB::DatabasePager::updateSceneGraph(frameStamp);
54     double d = osg::Timer::instance()->delta_m(start, osg::Timer::instance()->tick());
55     std::cout << "DatabasePager update took " << d << " ms. Length of active nodes = " << _activePagedLODList->size() << std::endl;
56   }
57 }
58};
59
60int main( int argc, char **argv )
61{
62
63    // use an ArgumentParser object to manage the program arguments.
64    osg::ArgumentParser arguments(&argc,argv);
65
66    // read the scene from the list of file specified commandline args.
67    osg::ref_ptr<osg::Node> scene = osgDB::readNodeFiles(arguments);
68
69    if (!scene)
70    {
71        scene = osgDB::readNodeFile("http://www.openscenegraph.org/data/earth_bayarea/earth.ive");
72    }
73
74    if (!scene)
75    {
76        std::cout << argv[0] << ": requires filename argument." << std::endl;
77        return 1;
78    }
79
80    // construct the viewer.
81    osgViewer::CompositeViewer viewer(arguments);
82
83    if (viewer.getNumViews()==0)
84    {
85
86        osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
87        if (!wsi)
88        {
89            osg::notify(osg::NOTICE)<<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
90            return 1;
91        }
92
93        unsigned int width, height;
94        wsi->getScreenResolution(osg::GraphicsContext::ScreenIdentifier(0), width, height);
95
96        osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
97        traits->x = 100;
98        traits->y = 100;
99        traits->width = 1000;
100        traits->height = 800;
101        traits->windowDecoration = true;
102        traits->doubleBuffer = true;
103        traits->sharedContext = 0;
104
105        osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
106        if (gc.valid())
107        {
108            osg::notify(osg::INFO)<<"  GraphicsWindow has been created successfully."<<std::endl;
109
110            // need to ensure that the window is cleared make sure that the complete window is set the correct colour
111            // rather than just the parts of the window that are under the camera's viewports
112            gc->setClearColor(osg::Vec4f(0.2f,0.2f,0.6f,1.0f));
113            gc->setClearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
114        }
115        else
116        {
117            osg::notify(osg::NOTICE)<<"  GraphicsWindow has not been created successfully."<<std::endl;
118        }
119
120        // view one
121        {
122            osgViewer::View* view = new osgViewer::View;
123            view->setName("View one");
124            viewer.addView(view);
125
126            view->setSceneData(scene.get());
127            view->getCamera()->setName("Cam one");
128            view->getCamera()->setViewport(new osg::Viewport(0,0, traits->width/2, traits->height/2));
129            view->getCamera()->setGraphicsContext(gc.get());
130
131            // add the state manipulator
132            osg::ref_ptr<osgGA::StateSetManipulator> statesetManipulator = new osgGA::StateSetManipulator;
133            statesetManipulator->setStateSet(view->getCamera()->getOrCreateStateSet());
134
135            view->setCameraManipulator(new osgGA::TerrainManipulator);
136            view->addEventHandler( statesetManipulator.get() );
137
138            view->addEventHandler( new osgViewer::StatsHandler );
139            view->addEventHandler( new osgViewer::HelpHandler );
140            view->addEventHandler( new osgViewer::WindowSizeHandler );
141            view->addEventHandler( new osgViewer::ThreadingHandler );
142            view->addEventHandler( new osgViewer::RecordCameraPathHandler );
143        }
144
145        // view two
146        {
147            osgViewer::View* view = new osgViewer::View;
148            view->setName("View two");
149            viewer.addView(view);
150
151            view->setSceneData(scene.get());
152            view->getCamera()->setName("Cam two");
153            view->getCamera()->setViewport(new osg::Viewport(traits->width/2,0, traits->width/2, traits->height/2));
154            view->getCamera()->setGraphicsContext(gc.get());
155            view->setCameraManipulator(new osgGA::TerrainManipulator);
156
157        }
158
159        // view three
160        {
161            osgViewer::View* view = new osgViewer::View;
162            view->setName("View three");
163            viewer.addView(view);
164
165            view->setSceneData(scene.get());
166
167            view->getCamera()->setName("Cam three");
168            view->getCamera()->setProjectionMatrixAsPerspective(30.0, double(traits->width) / double(traits->height/2), 1.0, 1000.0);
169            view->getCamera()->setViewport(new osg::Viewport(0, traits->height/2, traits->width, traits->height/2));
170            view->getCamera()->setGraphicsContext(gc.get());
171            view->setCameraManipulator(new osgGA::TerrainManipulator);
172
173            // attach custom database pager
174            view->setDatabasePager(new MyPager);
175            view->getDatabasePager()->setTargetMaximumNumberOfPageLOD(1);
176        }
177
178    }
179
180
181    while (arguments.read("-s")) { viewer.setThreadingModel(osgViewer::CompositeViewer::SingleThreaded); }
182    while (arguments.read("-g")) { viewer.setThreadingModel(osgViewer::CompositeViewer::CullDrawThreadPerContext); }
183    while (arguments.read("-c")) { viewer.setThreadingModel(osgViewer::CompositeViewer::CullThreadPerCameraDrawThreadPerContext); }
184
185     // run the viewer's main frame loop
186     return viewer.run();
187}
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