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Viewing changes to OpenSceneGraph/examples/osgtext/osgtext.cpp

  • Committer: Bazaar Package Importer
  • Author(s): Cyril Brulebois
  • Date: 2008-07-29 04:34:38 UTC
  • mfrom: (1.1.6 upstream) (2.1.3 lenny)
  • Revision ID: james.westby@ubuntu.com-20080729043438-no1h9h0dpsrlzp1y
http://bugs.debian.org/477353
http://bugs.debian.org/482239
* Non-maintainer upload.
* No longer try to detect (using /proc/cpuinfo when available) how many
  CPUs are available, fixing the FTBFS (due to -j0) on various platforms
  (Closes: #477353). The right way to do it is to support parallel=n in
  DEB_BUILD_OPTIONS (see Debian Policy §4.9.1), and adequate support has
  been implemented.
* Add patch to fix FTBFS due to the build system now refusing to handle
  whitespaces (Policy CMP0004 say the logs), thanks to Andreas Putzo who
  provided it (Closes: #482239):
   - debian/patches/fix-cmp0004-build-failure.dpatch
* Remove myself from Uploaders, as requested a while ago, done by Luk in
  his 2.2.0-2.1 NMU, which was never acknowledged.

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OpenSceneGraph/examples/osgtext/osgtext.cpp
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{
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public:
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    UpdateTextOperation(osg::Group* group):        
 
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    UpdateTextOperation(const osg::Vec3& center, float diameter, osg::Group* group):        
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        Operation("UpdateTextOperation", true),
 
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        _center(center),
 
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        _diameter(diameter),
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        _maxNumChildren(200),
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        _maxNumTextPerGeode(10),
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        _group(group)
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        for(unsigned int i=0; i<_maxNumTextPerGeode; ++i)
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        {
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            osg::Vec3 position(float(rand()) / float(RAND_MAX), float(rand()) / float(RAND_MAX), float(i)/float(_maxNumTextPerGeode));
 
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            float x = float(rand()) / float(RAND_MAX) - 0.5f;
 
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            float y = float(rand()) / float(RAND_MAX) - 0.5f;
 
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            float z = float(i)      / float(_maxNumTextPerGeode) - 0.5f;
 
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            osg::Vec3 position(x, y, z);
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            std::string str;
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            unsigned int _numCharacters = 5;
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            osgText::Text* text = new osgText::Text;
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            text->setDataVariance(osg::Object::DYNAMIC);
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            text->setPosition(position);
 
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            text->setPosition(_center + position * _diameter);
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            text->setFont("times.ttf");
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            text->setText(str);
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            text->setCharacterSize(0.025f);
 
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            text->setCharacterSize(0.025f * _diameter);
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            text->setAxisAlignment(osgText::Text::SCREEN);
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            geode->addDrawable(text);
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    typedef std::list< osg::ref_ptr<osg::Geode> > AvailableList;
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    osg::Vec3                   _center;
 
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    float                       _diameter;
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    unsigned int                _maxNumChildren;
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    unsigned int                _maxNumTextPerGeode;
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        // create a group to add everything into.
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        osg::Group* mainGroup = new osg::Group;
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        osg::Vec3 center(0.5f,0.5f,0.5f);
 
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        float diameter = 1.0f;
 
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        osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFiles(arguments);
 
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        if (loadedModel.valid())
 
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        {
 
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            mainGroup->addChild(loadedModel.get());
 
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            center = loadedModel->getBound().center();
 
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            diameter = loadedModel->getBound().radius() * 2.0f;
 
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        }
 
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        for(unsigned int i=0; i<numThreads; ++i)
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        {
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            osg::Group* textGroup = new osg::Group;
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            // create the operation that will run in the background and
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            // sync once per frame with the main viewer loop.
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            updateOperation = new UpdateTextOperation(textGroup);
 
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            updateOperation = new UpdateTextOperation(center, diameter, textGroup);
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            // add the operation to the operation thread and start it.
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            operationThread->add(updateOperation.get());
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            // add a unit cube for the text to appear within.
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            osg::Geode* geode = new osg::Geode;
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            geode->getOrCreateStateSet()->setAttribute(new osg::PolygonMode(osg::PolygonMode::FRONT_AND_BACK,osg::PolygonMode::LINE));
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            geode->addDrawable(new osg::ShapeDrawable(new osg::Box(osg::Vec3(0.5f,0.5f,0.5f),1.0)));
 
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            geode->addDrawable(new osg::ShapeDrawable(new osg::Box(center,diameter)));
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            mainGroup->addChild(geode);
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        }