AddExpressionItem (ActionDelta)

Description

Adds a new ActionDeltaItem of type siModificationDeltaExpression to an ActionDelta created with the Delta.AddAction method.

The ActionDelta should be of type siModificationDeltaExpression to use this method (see siModificationDeltaType for a list of ActionDelta types).

Scripting Syntax

    ActionDelta.AddExpressionItem( Target, Expression )

C# Syntax

    ActionDeltaItem ActionDelta.AddExpressionItem( Object in_vTarget, Object in_vExpression );

Parameters

Parameter | Type | Description
Target | String | Target path for source item
Expression | String | The definition (formula) that defines the expression. For more information on how to define an expression, see Expression Reference).

Return Value

ActionDeltaItem

Examples

JScript Example

    /*
       This example demonstrates how to add an ActionDeltaItem of type
       siModificationDeltaExpression to a ActionDelta.
    */

    NewScene (null, false);

    // Create a reference model from a cube
    var oRoot = Application.ActiveProject.ActiveScene.Root;
    var oCube = oRoot.AddGeometry("Cube", "MeshSurface");
    var emdlFileRefModel = XSIUtils.BuildPath(Application.InstallationPath(siProjectPath), "Models", "MyModel.emdl");
    CreateModelAndConvertToRef(oCube, emdlFileRefModel);

    // Create a cone
    var oCone = oRoot.AddGeometry("Cone", "MeshSurface");

    // Translate the cube that also generate a delta
    Translate(oCone , 3.0, 3.0, 0, siRelative, siView, siObj, siXYZ, null, null, null, null, null, null, null, null, null, 0, null);

    // Add the Delta object
    var oDelta = AddDelta(oCube.Model);

    // Add an action of type siModificationDeltaExpression
    var oDeltaAction = oDelta.AddAction(siModificationDeltaExpression)

    // Add the expression item
    var oActionDeltaItem = oDeltaAction.AddExpressionItem(oCube + ".kine.global.posx",  "5*sin(" + oCone + ".kine.local.posx * 15)");

    // Apply modification
    oDelta.Apply();

See Also

ActionDelta.AddFCurveItem | ActionDelta.AddConstraintItem | ActionDelta.AddStaticValueItem

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