OpenSceneGraph/examples/osgscalarbar/osgscalarbar.cpp

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#include <osg/Geode>
#include <osg/ShapeDrawable>
#include <osg/Material>
#include <osg/Texture2D>
#include <osg/MatrixTransform>
#include <osg/PositionAttitudeTransform>
#include <osg/BlendFunc>
#include <osg/ClearNode>
#include <osgUtil/Tesselator>
#include <osgUtil/TransformCallback>
#include <osgUtil/CullVisitor>
#include <osgGA/TrackballManipulator>
#include <osgProducer/Viewer>
#include <osgDB/ReadFile>
#include <osgSim/ScalarsToColors>
#include <osgSim/ColorRange>
#include <osgSim/ScalarBar>
#include <sstream>
#include <math.h>
using namespace osgSim;
osg::Node* createScalarBar()
{
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#if 1
//ScalarsToColors* stc = new ScalarsToColors(0.0f,1.0f);
//ScalarBar* sb = new ScalarBar(2,3,stc,"STC_ScalarBar");
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// Create a custom color set
std::vector<osg::Vec4> cs;
cs.push_back(osg::Vec4(1.0f,0.0f,0.0f,1.0f)); // R
cs.push_back(osg::Vec4(0.0f,1.0f,0.0f,1.0f)); // G
cs.push_back(osg::Vec4(1.0f,1.0f,0.0f,1.0f)); // G
cs.push_back(osg::Vec4(0.0f,0.0f,1.0f,1.0f)); // B
cs.push_back(osg::Vec4(0.0f,1.0f,1.0f,1.0f)); // R
// Create a custom scalar printer
struct MyScalarPrinter: public ScalarBar::ScalarPrinter
{
std::string printScalar(float scalar)
{
std::cout<<"In MyScalarPrinter::printScalar"<<std::endl;
if(scalar==0.0f) return ScalarPrinter::printScalar(scalar)+" Bottom";
else if(scalar==0.5f) return ScalarPrinter::printScalar(scalar)+" Middle";
else if(scalar==1.0f) return ScalarPrinter::printScalar(scalar)+" Top";
else return ScalarPrinter::printScalar(scalar);
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}
};
ColorRange* cr = new ColorRange(0.0f,1.0f,cs);
ScalarBar* sb = new ScalarBar(20, 11, cr, "ScalarBar", ScalarBar::VERTICAL, 4.0f, new MyScalarPrinter);
sb->setScalarPrinter(new MyScalarPrinter);
return sb;
#else
ScalarBar *sb = new ScalarBar;
ScalarBar::TextProperties tp;
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tp._fontFile = "fonts/times.ttf";
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sb->setTextProperties(tp);
return sb;
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#endif
}
int main( int argc, char **argv )
{
// use an ArgumentParser object to manage the program arguments.
osg::ArgumentParser arguments(&argc,argv);
// set up the usage document, in case we need to print out how to use this program.
arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" is the example which demonstrates both text, animation and billboard via custom transform to create the OpenSceneGraph logo..");
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] filename ...");
arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
arguments.getApplicationUsage()->addCommandLineOption("ps","Render the Professional Services logo");
// construct the viewer.
osgProducer::Viewer viewer(arguments);
// set up the value with sensible default event handlers.
viewer.setUpViewer(osgProducer::Viewer::STANDARD_SETTINGS);
// get details on keyboard and mouse bindings used by the viewer.
viewer.getUsage(*arguments.getApplicationUsage());
// if user request help write it out to cout.
if (arguments.read("-h") || arguments.read("--help"))
{
arguments.getApplicationUsage()->write(std::cout);
return 1;
}
// any option left unread are converted into errors to write out later.
arguments.reportRemainingOptionsAsUnrecognized();
// report any errors if they have occured when parsing the program aguments.
if (arguments.errors())
{
arguments.writeErrorMessages(std::cout);
return 1;
}
osg::Node* node = createScalarBar();
// add model to viewer.
viewer.setSceneData( node );
// create the windows and run the threads.
viewer.realize();
while( !viewer.done() )
{
// wait for all cull and draw threads to complete.
viewer.sync();
// update the scene by traversing it with the the update visitor which will
// call all node update callbacks and animations.
viewer.update();
// fire off the cull and draw traversals of the scene.
viewer.frame();
}
// wait for all cull and draw threads to complete before exit.
viewer.sync();
return 0;
}