## XSIFactory.CreateFCurveKeyCollection

### Introduced

v6.0

### Description

Creates an empty FCurveKey collection. With an empty FCurveKeyCollection, you can add FCurveKeys with the FCurveKeyCollection.Add method, as long as they belong to the same FCurve.

### C# Syntax

    FCurveKeyCollection XSIFactory.CreateFCurveKeyCollection();

### Scripting Syntax

    oReturn = XSIFactory.CreateFCurveKeyCollection();

### Return Value

FCurveKeyCollection

### Examples

#### JScript Example

    //

    // This example illustrates how to create an empty FCurveKeyCollection and populate it

    // Create a new scene

    NewScene(null, false);

    // Create a null

    oNull = Application.GetPrim("Null");

    // Get the posx parameter of the null

    oPosX = oNull.posx

    // Create array of time-value pairs

    aKeys = new Array( 0.00, 5.00,

    				1.00, 6.00,

    				2.00, 7.00,

    				3.00, 8.00,

    				4.00, 9.00,

    				5.00, 10.00 );

    // Create an empty FCurve

    oFCurve = oPosX.AddFCurve2( null, siStandardFCurve );

    // Set the fcurve keys

    oFCurve.SetKeys( aKeys );

    // Create an empty key collection

    aKeyColl = XSIFactory.CreateFCurveKeyCollection();

    // Add every other key to the collection

    for (var i = 0; i < oFCurve.Keys.Count; i+=2)

    {

    	aKeyColl.Add( oFCurve.Keys(i) );

    }

    // Print out the collection

    for (var i = 0; i < aKeyColl.Count; i++)

    {

    	Application.LogMessage( 'Time: ' + aKeyColl(i).Time + ', Value: ' + aKeyColl(i).Value, siInfo );

    }

    // Produces the following output:

    //

    //INFO : Time: 0, Value: 5

    //INFO : Time: 2, Value: 7

    //INFO : Time: 4, Value: 9

### See Also

FCurveKey FCurveKeyCollection