root/OpenSceneGraph/trunk/examples/osgsimulation/osgsimulation.cpp @ 2213

Revision 2213, 4.3 kB (checked in by robert, 11 years ago)

From Neil Salter, added osgSim::SphereSegment? and osgSim::ScalarBar?, and
osgspheresegment and osgscalarbar, and osgsimulation examples.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
Line 
1/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
2 *
3 * This application is open source and may be redistributed and/or modified   
4 * freely and without restriction, both in commericial and non commericial applications,
5 * as long as this copyright notice is maintained.
6 *
7 * This application is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
10*/
11
12#include <osgDB/ReadFile>
13#include <osgUtil/Optimizer>
14#include <osgProducer/Viewer>
15
16
17#include <osgSim/SphereSegment>
18
19using namespace osgSim;
20
21osg::Node* createSphereSegment()
22{
23    osgSim::SphereSegment* ss = new osgSim::SphereSegment(osg::Vec3(0.0f,0.0f,0.0f), 1.0f,
24                                                          osg::Vec3(0.0f,1.0f,0.0f),
25                                                          osg::DegreesToRadians(360.0f),
26                                                          osg::DegreesToRadians(45.0f),
27                                                          40);
28    ss->setAllColors(osg::Vec4(1.0f,1.0f,1.0f,0.5f));
29
30    return ss;
31}
32
33osg::Node* createModel()
34{
35    return createSphereSegment();
36}
37
38
39int main( int argc, char **argv )
40{
41
42    // use an ArgumentParser object to manage the program arguments.
43    osg::ArgumentParser arguments(&argc,argv);
44   
45    // set up the usage document, in case we need to print out how to use this program.
46    arguments.getApplicationUsage()->setApplicationName(arguments.getApplicationName());
47    arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" is the standard OpenSceneGraph example which loads and visualises 3d models.");
48    arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] filename ...");
49    arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
50   
51
52    // construct the viewer.
53    osgProducer::Viewer viewer(arguments);
54
55    // set up the value with sensible default event handlers.
56    viewer.setUpViewer(osgProducer::Viewer::STANDARD_SETTINGS);
57
58    // get details on keyboard and mouse bindings used by the viewer.
59    viewer.getUsage(*arguments.getApplicationUsage());
60
61    // if user request help write it out to cout.
62    if (arguments.read("-h") || arguments.read("--help"))
63    {
64        arguments.getApplicationUsage()->write(std::cout);
65        return 1;
66    }
67
68    // any option left unread are converted into errors to write out later.
69    arguments.reportRemainingOptionsAsUnrecognized();
70
71    // report any errors if they have occured when parsing the program aguments.
72    if (arguments.errors())
73    {
74        arguments.writeErrorMessages(std::cout);
75        return 1;
76    }
77   
78    if (arguments.argc()<=1)
79    {
80        arguments.getApplicationUsage()->write(std::cout,osg::ApplicationUsage::COMMAND_LINE_OPTION);
81        return 1;
82    }
83
84//    osg::Timer timer;
85//    osg::Timer_t start_tick = timer.tick();
86//
87//    // read the scene from the list of file specified commandline args.
88//     osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFiles(arguments);
89//
90//     // if no model has been successfully loaded report failure.
91//     if (!loadedModel)
92//     {
93//         std::cout << arguments.getApplicationName() <<": No data loaded" << std::endl;
94//         return 1;
95//     }
96//
97//     osg::Timer_t end_tick = timer.tick();
98//
99//     std::cout << "Time to load = "<<timer.delta_s(start_tick,end_tick)<<std::endl;
100
101    osg::ref_ptr<osg::Node> loadedModel = createModel();
102
103
104    // optimize the scene graph, remove rendundent nodes and state etc.
105    osgUtil::Optimizer optimizer;
106    optimizer.optimize(loadedModel.get());
107
108
109    // set the scene to render
110    viewer.setSceneData(loadedModel.get());
111
112    // create the windows and run the threads.
113    viewer.realize();
114
115    while( !viewer.done() )
116    {
117        // wait for all cull and draw threads to complete.
118        viewer.sync();
119
120        // update the scene by traversing it with the the update visitor which will
121        // call all node update callbacks and animations.
122        viewer.update();
123         
124        // fire off the cull and draw traversals of the scene.
125        viewer.frame();
126       
127    }
128   
129    // wait for all cull and draw threads to complete before exit.
130    viewer.sync();
131
132    return 0;
133}
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