NewScene( "", false );

// Get a nurbs curve object

var obj = ActiveSceneRoot.AddGeometry( "Arc", "NurbsCurve" );

FreezeObj( obj );

var crvlist = obj.ActivePrimitive.Geometry;

var crv = crvlist.Curves(0);

// Get a complete data description of the arc

var VBdata = crv.Get2( siSiNurbs );					// returns a safearray

var data = VBdata.toArray();					// convert the safearray to a JS array

// For clarity, extract and store the data in separate variables

var crtlvertices = data[0];

var knots = data[1];

var isclosed = data[2];

var degree = data[3];

var parameterization = data[4];

// We want to make another 4 curves

for ( times=0; times<4; times++ ){

	// Translate every controlvertex of the new curve from 5 in x

	for ( var i=0; i<crtlvertices.length; i=i+3 ) {

		crtlvertices[i] = crtlvertices[i] + 5;

	}

	// Add a new nurbs curve using the modified data description

	crvlist.AddCurve( crtlvertices, knots, isclosed, degree, parameterization );

}

// Now get the collection of all nurbs curves in the list

var crvcoll = crvlist.Curves;

var firstcrvs = crvcoll.Navigate( siFirstComponent );

var fc = new Enumerator( firstcrvs ); var result = "";

for ( ; ! fc.atEnd(); fc.moveNext() ) {

	var crv = fc.item();

	result += crv.Index + "\t";

}

LogMessage( "The associated first curves are    \t" + result );

var lastcrvs = crvcoll.Navigate( siLastComponent );

var lc = new Enumerator( lastcrvs ); result = ""

for ( ; ! lc.atEnd(); lc.moveNext() ) {

	var crv = lc.item();

	result += crv.Index + "\t";

}

LogMessage( "The associated last curves are     \t" + result );

var nextcrvs = crvcoll.Navigate( siNextComponent );

var nc = new Enumerator( nextcrvs ); result = ""

for ( ; ! nc.atEnd(); nc.moveNext() ) {

	var crv = nc.item();

	result += crv.Index + "\t";

}

LogMessage( "The associated next curves are     \t" + result );

var prevcrvs = crvcoll.Navigate( siPreviousComponent );

var pc = new Enumerator( prevcrvs ); result = ""

for ( ; ! pc.atEnd(); pc.moveNext() ) {

	var crv = pc.item();

	result += crv.Index + "\t";

}

LogMessage( "The associated previous curves are \t" + result );

// Expected result:

//INFO : The associated first curves are    	0	0	0	0	0	

//INFO : The associated last curves are     	4	4	4	4	4	

//INFO : The associated next curves are     	1	2	3	4	0	

//INFO : The associated previous curves are 	4	0	1	2	3