OpenSceneGraph/examples/osgscalarbar/osgscalarbar.cpp
2004-11-16 14:35:29 +00:00

184 lines
6.1 KiB
C++

#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 <osg/Projection>
#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;
using osgSim::ScalarBar;
#if defined(_MSC_VER)
// not have to have this pathway for just VS6.0 as its unable to handle the full
// ScalarBar::ScalarPrinter::printScalar scoping.
// 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);
}
};
#else
// 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 ScalarBar::ScalarPrinter::printScalar(scalar)+" Bottom";
else if(scalar==0.5f) return ScalarBar::ScalarPrinter::printScalar(scalar)+" Middle";
else if(scalar==1.0f) return ScalarBar::ScalarPrinter::printScalar(scalar)+" Top";
else return ScalarBar::ScalarPrinter::printScalar(scalar);
}
};
#endif
osg::Node* createScalarBar()
{
#if 1
//ScalarsToColors* stc = new ScalarsToColors(0.0f,1.0f);
//ScalarBar* sb = new ScalarBar(2,3,stc,"STC_ScalarBar");
// 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
ColorRange* cr = new ColorRange(0.0f,1.0f,cs);
ScalarBar* sb = new ScalarBar(20, 11, cr, "ScalarBar", ScalarBar::VERTICAL, 0.1f, new MyScalarPrinter);
sb->setScalarPrinter(new MyScalarPrinter);
return sb;
#else
ScalarBar *sb = new ScalarBar;
ScalarBar::TextProperties tp;
tp._fontFile = "fonts/times.ttf";
sb->setTextProperties(tp);
return sb;
#endif
}
osg::Node * createScalarBar_HUD()
{
osgSim::ScalarBar * geode = new osgSim::ScalarBar;
osgSim::ScalarBar::TextProperties tp;
tp._fontFile = "fonts/times.ttf";
geode->setTextProperties(tp);
osg::StateSet * stateset = geode->getOrCreateStateSet();
stateset->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
stateset->setMode(GL_DEPTH_TEST,osg::StateAttribute::OFF);
stateset->setRenderBinDetails(11, "RenderBin");
osg::MatrixTransform * modelview = new osg::MatrixTransform;
modelview->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
osg::Matrixd matrix(osg::Matrixd::scale(1000,1000,1000) * osg::Matrixd::translate(120,10,0)); // I've played with these values a lot and it seems to work, but I have no idea why
modelview->setMatrix(matrix);
modelview->addChild(geode);
osg::Projection * projection = new osg::Projection;
projection->setMatrix(osg::Matrix::ortho2D(0,1280,0,1024)); // or whatever the OSG window res is
projection->addChild(modelview);
return projection; //make sure you delete the return sb line
}
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::Group* group = new osg::Group;
group->addChild(createScalarBar());
group->addChild(createScalarBar_HUD());
// add model to viewer.
viewer.setSceneData( group );
// 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;
}