## FCurve.UndoEdit

### Introduced

v3.0

### Description

Undoes the bulk edits made to the fcurve and closes the current bulk edit.
Note: If you call UndoEdit when there is no bulk edit in progress, the method returns S_FALSE.

### C# Syntax

    FCurve.UndoEdit();

### Scripting Syntax

    FCurve.UndoEdit();

### Examples

#### JScript Example

    /*
            This JScript example illustrates how to use the editing recording
            feature of fcurves. This allows changes to be committed only after
            all edits have been completed and undone if necessary.
    */
    // Create a null
    Application.NewScene( null, false );
    var nullobj = ActiveSceneRoot.AddNull();
    // Create an fcurve on the posx parameter from the null
    var fc = nullobj.posx.AddFCurve();
    // Define a random number of keys
    var nbkeys = Math.round( Math.random() * 100 );
    LogMessage( nbkeys );
    var arraysize = nbkeys * 2;
    var keys = new Array( 2 * nbkeys );
    var i = 0, empty;
    var offset = -50;
    for ( i=0; i<arraysize; i+=2 )
    {
            keys[i] = offset + i;
            keys[i+1] = ( Math.cos( (i + 1) / 10 ) * 50 );
    }
    // Set the keys on the fcurve
    fc.SetKeys(keys);
    // Begin recording changes to fcurve
    fc.BeginEdit();
    if ( fc.IsEditing() )
    {
            LogMessage( "fcurve is recording changes" );
    }
    // Assign random values to keys
    for ( i=0; i<fc.GetNumKeys(); i++ )
    {
            // Assign a randon value to keys
            fc.Keys(i).Value = ( Math.random() * 100 ) - 50;
    }
    // If the number of keys if greater than 50 then undo all the
    // changes you just made
    nbkeys = fc.GetNumKeys();
    if ( nbkeys > 50 )
    {
            LogMessage( "undoing changes" );
            fc.UndoEdit();
    }
    nbkeys = fc.GetNumKeys();
    LogMessage( "total number of keys = " + nbkeys );
    // End editing (not necessary to call if changes were undone)
    fc.EndEdit();
    if ( !fc.IsEditing() )
    {
            LogMessage( "fcurve has finished recording changes" );
    }
    // Outputs:
    //INFO : 29
    //INFO : fcurve is recording changes
    //INFO : total number of keys = 29
    //INFO : fcurve has finished recording changes

### See Also

FCurve.BeginEdit FCurve.EndEdit FCurve.IsEditing