## CreateObjectFromPreset

### Introduced

v1.0

### Description

Creates and returns a new object based on a preset. The object is created in the TransientObjectContainer meaning that it is not persisted in the scene or visible in the scene explorer. This area is flushed each time a new scene is loaded. This command can be useful for creating temporary CustomProperty objects as shown in the example below.

### Scripting Syntax

    oReturn = CreateObjectFromPreset( PresetObj, [Name] );

### Return Value

Returns the newly created object.

### Parameters

Parameter | Type | Description
--- | --- | ---
PresetObj | String | Preset object or full path of the preset file. See Model Presets, Operator Presets, Pass Presets, Primitive Presets, Property Presets, and Shader Presets
Name | String | Name to give the created object

### Examples

#### JScript Example

    /*
            Example of creating a temporary custom property (aka custom pset).
            This can be useful for showing a temporary yet non-modal custom pset
            to the user.  The user doesn//t have to close the PPG immediately
            yet the object does not clutter up the scene file.
    */
    NewScene( "", false );
    // Demonstrate how you can use it to create a built-in custom pset
    var oAnnotation = CreateTemporaryCustomPSet( "Annotation", Application.InstallationPath(siFactoryPath), "MyA" );
    if ( oAnnotation ) {
            InspectObj( oAnnotation, "", "Annotation Test", siModal, false );
    }
    // Create an instance of one of the SDK workgroup sample psets
    var presetpath = XSIUtils.BuildPath(
            Application.InstallationPath( siFactoryPath ),
            "XSISDK", "examples", "workgroup", "Addons", "PSetUIDemo"
    );
    var oPSetUIDemo = CreateTemporaryCustomPSet( "PSetUIDemo", presetpath, "" );
    if ( oPSetUIDemo ) {
            InspectObj( oPSetUIDemo, "", "PSetUIDemo Test", siModal, false );
    }
    // Now the following lines will log, declaring that these instances live inside the TransientObjectContainer:
    // INFO : Full path of Annotation instance is: TransientObjectContainer.MyA
    // INFO : Full path of PSetUIDemo instance is: TransientObjectContainer.PSetUIDemo
    // ... but nothing exists under the Scene_Root...
    var oProp = Application.ActiveSceneRoot.Properties("PSetUIDemo");
    if (oProp == null || typeof(oProp) == "undefined") {
            Application.LogMessage( "No instances found." );
    } else {
            Application.LogMessage( "Found an instance." );
    }
    // INFO : No instances found.
    // ... until you apply it
    Application.ActiveSceneRoot.AddProperty( XSIUtils.BuildPath(presetpath, "Data", "DSPresets", "Properties", "PSetUIDemo.Preset") );
    oProp = Application.ActiveSceneRoot.Properties("PSetUIDemo");
    if (oProp == null || typeof(oProp) == "undefined") {
            Application.LogMessage( "No instances found." );
    } else {
            Application.LogMessage( "Found an instance." );
    }
    // INFO : Found an instance.
    // Function CreateTemporaryCustomPSet
    // Creates a temporary custom property set.  This does not appear in the scene explorer and you do not have to
    // worry about deleting it.
    //
    // in_PresetName - Name of the preset, which normally matches the name of the spdl file.  Do not include the extension
    // in_PresetLocation - May be one of the siInstallationPath values (e.g. siUserPath, siUserAddonPath, etc.) or a string path
    // in_CustomPSetName - Desired name for the new object, or leave empty for default behavior
    //
    // Return Value: newly created custom pset
    function CreateTemporaryCustomPSet( in_PresetName, in_PresetLocation, in_CustomPSetName )
    {
            var oPSet;
            // Last argument is optional
            if ( in_CustomPSetName == "" ) {
                    in_CustomPSetName = in_PresetName;
            }
            // Figure out whether this is a string path or an siInstallationPath value
            in_PresetLocation = ( typeof(in_PresetLocation) == "string" )
                    ? in_PresetLocation
                    : Application.InstallationPath(in_PresetLocation);
            var presetFullPath = XSIUtils.BuildPath(
                    in_PresetLocation, "Data", "DSPresets", "Properties", in_PresetName + ".Preset"
            );
            try {
                    oPSet = CreateObjectFromPreset( presetFullPath, in_CustomPSetName );
                    Application.LogMessage( "Full path of " + in_PresetName + " instance is: " + oPSet.FullName );
            } catch(e) {
                    Application.LogMessage( "Failed to create temporary instance of " + in_PresetName + " preset", siWarning );
                    return null;
            }
            return oPSet;
    }

### See Also

XSIFactory.CreateObjectFromPreset CreatePreset LoadPreset SavePreset SIGetPreset SILoadPreset SIAddPropEx