97 lines
3.5 KiB
C++
97 lines
3.5 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This application is open source and may be redistributed and/or modified
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* freely and without restriction, both in commericial and non commericial applications,
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* as long as this copyright notice is maintained.
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*
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* This application is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#include <osgDB/ReadFile>
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#include <osgUtil/Optimizer>
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#include <osgViewer/Viewer>
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#include <iostream>
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int main( int argc, char **argv )
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{
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// use an ArgumentParser object to manage the program arguments.
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osg::ArgumentParser arguments(&argc,argv);
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// read the scene from the list of file specified commandline args.
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osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFiles(arguments);
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// if not loaded assume no arguments passed in, try use default mode instead.
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if (!loadedModel) loadedModel = osgDB::readNodeFile("cow.osg");
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// if no model has been successfully loaded report failure.
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if (!loadedModel)
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{
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std::cout << arguments.getApplicationName() <<": No data loaded" << std::endl;
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return 1;
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}
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// construct the viewer.
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osgViewer::Viewer viewer;
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// left window + left slave camera
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{
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osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
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traits->x = 0;
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traits->y = 0;
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traits->width = 640;
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traits->height = 480;
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traits->windowDecoration = true;
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traits->doubleBuffer = true;
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traits->sharedContext = 0;
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osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
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osg::ref_ptr<osg::Camera> camera = new osg::Camera;
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camera->setGraphicsContext(gc.get());
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camera->setViewport(new osg::Viewport(0,0, traits->width, traits->height));
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GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
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camera->setDrawBuffer(buffer);
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camera->setReadBuffer(buffer);
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// add this slave camra to the viewer, with a shift left of the projection matrix
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viewer.addSlave(camera.get(), osg::Matrixd::translate(1.0,0.0,0.0), osg::Matrixd());
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}
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// left window + left slave camera
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{
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osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
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traits->x = 640;
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traits->y = 0;
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traits->width = 640;
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traits->height = 480;
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traits->windowDecoration = true;
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traits->doubleBuffer = true;
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traits->sharedContext = 0;
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osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
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osg::ref_ptr<osg::Camera> camera = new osg::Camera;
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camera->setGraphicsContext(gc.get());
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camera->setViewport(new osg::Viewport(0,0, traits->width, traits->height));
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GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
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camera->setDrawBuffer(buffer);
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camera->setReadBuffer(buffer);
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// add this slave camra to the viewer, with a shift right of the projection matrix
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viewer.addSlave(camera.get(), osg::Matrixd::translate(-1.0,0.0,0.0), osg::Matrixd());
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}
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// optimize the scene graph, remove rendundent nodes and state etc.
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osgUtil::Optimizer optimizer;
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optimizer.optimize(loadedModel.get());
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// set the scene to render
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viewer.setSceneData(loadedModel.get());
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return viewer.run();
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}
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