AddTrack

Introduced

1.0

Description

Creates a track for the specified animation mixer. Tracks are the clip containers used to sequence clips in the animation Mixer. There are three types of tracks in the mixer: animation, shape, and audio.

Scripting Syntax

    AddTrack( Model, [Compound], [Type], [Name], [InsertPosition] )

Parameters

Parameter | Type | Description
Model | String | The model to add the track to.
Compound | String | The compound container (track owner) to add this track to.
Type | Integer | Type of mixer track to add. Default Value: Determine track type from context. Possible Values: • 0: Animation track • 1: Shape track • 2: Audio track • 3: Image track (not supported) • 4: Switching track (not supported) • 5: Animation Layer Track
Name | String | Name of the new track.
InsertPosition | Integer | Which track to insert this one on top of

Return Value

Returns the Track object.

Examples

1. VBScript Example

    '
    ' This example builds a simple keyframed animation, puts it in an
    ' Action and instantiates it on the mixer, transitioning to a second
    ' (static) clip.
    '

    posParams = "/kine.local.posx,kine.local.posy,kine.local.posz"
    ' Create the object for our example.
    set oSphere = CreatePrim( "Sphere", "MeshSurface" )

    ' Animate it and store an Action for the motion.
    SetPositionKey oSphere, 1, -5, -5, 0
    SetPositionKey oSphere, 30, 5, 5, 0
    set oSourceAnim1 = StoreAction( , oSphere & posParams, 2, "Diagonal", True, 1, 30 )
    ' Store another source which is a static snapshot.
    Translate oSphere, -5, 5, 0, siAbsolute, siView, siObj, siXYZ
    set oSourceAnim2 = StoreAction( , oSphere & posParams, 1, "Static", True, 1, 10 )

    ' Create a track for the clips.
    set oTrackAnim = AddTrack( oSphere, , 0, "SimpleAnim" )

    ' Instantiate the animation sources onto the track.
    set oClipAnim1 = AddClip( "Scene_Root", oSourceAnim1, , oTrackAnim, 1 )
    set oClipAnim2 = AddClip( "Scene_Root", oSourceAnim2, , oTrackAnim, 91 )

    ' Put a transition between the two clips.
    AddTransition oClipAnim1, oClipAnim2, 0

    '==================================================
    ' Helper method to key an object somewhere at a given frame.
    '==================================================
    sub SetPositionKey( in_oObj, in_frame, in_posX, in_posY, in_posZ )
       Translate in_oObj, in_posX, in_posY, in_posZ, siAbsolute, siParent, siObj, siXYZ
       SaveKey in_oObj & posParams, in_frame
    end sub

2. VBScript Example

    ' This example demonstrates several mixer-related commands.  It
    ' makes a couple of shape keys and instantiates them on the mixer,
    ' transitioning between them.  Then it takes the shape animation,
    ' puts it into a compound clip and finally adds a bit more shape
    ' animation inside the compound.

    ' Create the object for our example.
    set oSphere = CreatePrim( "Sphere", "MeshSurface" )

    ' Store a couple of shape keys (we use the temporarily-applied bulge
    ' just to have an interesting shape for the second key.
    set oSourceShape1 = StoreShapeKey( oSphere, , siShapeLocalReferenceMode )
    set oBulge = ApplyOp( "Bulge", oSphere, 3, siPersistentOperation )
    set oSourceShape2 = StoreShapeKey( oSphere, , siShapeLocalReferenceMode )
    DeleteObj oBulge

    ' Create a temporary track to put the clips onto.
    set oTrackTemp = AddTrack( oSphere, , 1 )

    ' Instantiate the shape sources onto the track.
    set oClipShape1 = AddClip( "Scene_Root", oSourceShape1, , oTrackTemp, 1 )
    set oClipShape2 = AddClip( "Scene_Root", oSourceShape2, , oTrackTemp, 90 )

    ' Put a transition between the two clips.
    AddTransition oClipShape1, oClipShape2, 0

    ' Create a track for a shape compound, then put the two
    ' shape clips into it.
    set oTrackCpd = AddTrack( "Scene_Root", , 1, "ForCompound" )
    set oCompound = CreateCompound( "Scene_Root", oClipShape1 & "," & oClipShape2, _
       , oTrackCpd, 1, "MyCompound" )

    ' Add a new track inside the shape compound, on which
    ' we will instantiate a couple more sources.  Note that
    ' we insert it before the other track in the compound,
    ' so it will appear first.
    set oTrackInsideCpd = AddTrack( "Scene_Root", oCompound, , "Extras", 0 )
    set oClipShape1 = AddClip( "Scene_Root", oSourceShape2, , oTrackInsideCpd, 30 )
    set oClipShape2 = AddClip( "Scene_Root", oSourceShape1, , oTrackInsideCpd, 50 )
    SetValue oClipShape2 & ".actionclip.timectrl.scale", 0.5
    SetDefaultWeight oClipShape1, siWeightGaussian, 0
    SetDefaultWeight oClipShape2, siWeightGaussian, 0

    ' Get rid of this temporary track...
    DeleteObj oTrackTemp

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