COURBES NURBS 3D DANS OPENSCENEGRAPH

#include "NURBSCurve.hpp"
#include "CurveGeodeFactory.hpp"
#include "TubeGeodeFactory.hpp"
#include "CurveCameraManipulator.hpp"
#include <iostream>
#include <osg/Node>
#include <osg/Group>
#include <osg/Geode>
#include <osg/Geometry>
#include <osgViewer/Viewer>
#include <osgGA/TrackballManipulator>

int main()
{
	NURBSCurve3 curve;
	TubeSurface3 tube;
	std::vector<osg::Vec3> points;
	CurveGeodeFactory curveGeodeFactory;
	TubeGeodeFactory tubeGeodeFactory;
	osg::Group * rootNode;
	osg::Geode * curveGeode;
	osg::Geode * tubeGeode;
	osgViewer::Viewer viewer;

	// On ajoute des points à la courbe NURBS.
	points.push_back( osg::Vec3( 10., 0., 0. ) );
	points.push_back( osg::Vec3( 20., 0., 0. ) );
	points.push_back( osg::Vec3( 33., 53., 0. ) );
	points.push_back( osg::Vec3( 0., 40., 0. ) );
	points.push_back( osg::Vec3( 0., 50., 50. ) );
	points.push_back( osg::Vec3( 50., 106., 56. ) );
	points.push_back( osg::Vec3( 0., 157., 107. ) );
	points.push_back( osg::Vec3( -58., 58., 58. ) );
	points.push_back( osg::Vec3( 0., 19., 0. ) );
	curve.setPoints( points );

	// On fabrique mathématiquement un tube à partir de la courbe.
	tube.setCurve( curve );
	tube.setRadius( 3. );

	// On fabrique une courbe à afficher en 3D.
	curveGeodeFactory.setCurve( curve );
	curveGeodeFactory.setFrames( true );
	curveGeodeFactory.setDeltaT( 1e-2 );
	curveGeode = curveGeodeFactory.createGeode();

	// On fabrique un tube à partir de la courbe.
	tubeGeodeFactory.setSurface( tube );
	tubeGeodeFactory.setCurveDeltaT( 5e-3 );
	tubeGeodeFactory.setRingSubdivision( 16 );
	tubeGeode = tubeGeodeFactory.createGeode();

	// On regroupe tout
	rootNode = new osg::Group();
	rootNode->addChild( curveGeode );
	rootNode->addChild( tubeGeode );
	viewer.setSceneData( rootNode );

	// Décommenter pour contrôler la caméra avec la souris.
	viewer.setCameraManipulator( new osgGA::TrackballManipulator() );

	// Décommenter pour que la caméra suive la courbe.
	//viewer.setCameraManipulator( new CurveCameraManipulator( curve ) );

	viewer.realize();

	while ( !viewer.done() )
	{
		viewer.frame();
	}
	return 0;
}