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Clip

Object Hierarchy | Related C++ Class: Clip | Supported Parameter List: actionclip

Inheritance

SIObject
  ProjectItem
    Clip

Introduced

1.5

Description

Clips are instances of animation and shape actions (ActionSource), audio and image sources (Source) and compound clips (ClipContainer). You can check to see the clip type (such as an audio clip) using the SIObject.Type property which returns one of the values contained in the siClipType enum.

This object also provides access to clip features such as its timing (TimeControl), any links to other clips (ClipRelation), and any applied effects (ClipEffect). In addition, you can get the underlying source on which this clip is instantiated (the Source object via Clip.Source) or the elements of that source (using either the MappedItem object via Clip.MappedItems or the AnimationSourceItem object via ActionSource.SourceItems).

Important: While the Clip object represents compound, audio, and image clips, not all Clip methods and properties are available for these types. For example, the Clip.MappedItems property will fail and report that it is not implemented for these clip types (ie., returns E_NOTIMPL).

Tip: There is no function in the object model to create clips from sources, but you can use the AddClip command, which returns this object. To access existing Clip objects, you can get the ClipCollection on the Mixer via the ClipContainer.Clips property.

Methods

Properties

Examples

1. Python Example

#
# This example demonstrates how to create a Clip containing the static
# values of the local position of an object.
#

oRoot = Application.ActiveSceneRoot
oCube = oRoot.AddGeometry( "Cube", "MeshSurface" )

# Creating the first animation source
sParams = "cube.kine.local.posx,cube.kine.local.posy,cube.kine.local.posz"
oSource = Application.StoreAction( oRoot, sParams, 1, "StoredStaticPose", 1, 1, 5, 0, 0) 

# Creating the first clip
oClip = Application.AddClip( oRoot, oSource )
   Application.LogMessage( "First created clip " + oClip.FullName )

# Creating the second animation source
oCube.Parameters("posx").Value = 3.0
oSource2 = Application.StoreAction( oRoot, sParams, 1, "StoredStaticPose", 1, 7, 9, 0, 0 )

# Creating the second clip
oClip2 = Application.AddClip(oRoot, oSource2)
Application.LogMessage("Second created clip " + oClip2.FullName)


# Expected results:
#INFO : First created clip Mixer.Mixer_Anim_Track.StoredStaticPose_Clip
#INFO : Second created clip Mixer.Mixer_Anim_Track1.StoredStaticPose1_Clip

2. JScript Example

/*
This example demonstrates working with action and audio sources and clips
*/
NewScene( null, false );

// Do it on a nested model
var mdl = ActiveSceneRoot.AddModel();
mdl.Name = "TestModel";

// ----------------------
// Create an fcurve source and instantiate a clip in the mixer
var obj = mdl.AddNull();

// Set FCurves on the null's scaling
var keys = new Array( 5, 1.2,  20, 1.7,  45, 2.0,  90, 2.5 ); // X
obj.sclx.AddFCurve2( keys );

var keyfactor = Math.random() * 10; // Y
var posfactor = Math.random();
for ( var i=0; i<keys.length; i=i+2 ) {
   keys[i] = keys[i] + keyfactor;
   keys[i+1] = keys[i+1] * posfactor;
}
obj.scly.AddFCurve2( keys );

var keyfactor = Math.random() * 10; // Z
var posfactor = Math.random();
for ( var i=0; i<keys.length; i=i+2 ) {
   keys[i] = keys[i] - keyfactor;
   keys[i+1] = keys[i+1] * posfactor;
}
obj.sclz.AddFCurve2( keys );

// Get list of parameters to mark
var params = obj.sclx.FullName + ",";
params += obj.scly.FullName + ",";
params += obj.sclz.FullName;

// Make the FCurves into an Action
var src = StoreAction( mdl, params, 2, "StoredAnimFCrvAction" );
AddClip( mdl, src );


// ----------------------
// Add an audio clip to the mixer
var mix;
if ( mdl.HasMixer() ) {
   mix = mdl.Mixer; 
} else {
   mix = mdl.AddMixer();
}
var aud_track = AddTrack( mdl, mix, 2 );
var aud_src = ImportAudio( mdl, "C:\\Program Files\\Messenger\\NEWALERT.WAV" );
AddAudioClip( mdl, aud_src );


// ----------------------
// Find the clips under the mixer
var cliplist = mdl.Mixer.Clips;
for ( var c=0; c<cliplist.Count; c++ ) {
   var clip = cliplist(c);
   LogMessage( "----------------------" );
   LogMessage( "Found a clip of type " + clip.Type + " under " + mdl.Mixer );

   // Get the underlying source items associated with this clip, but make sure
   // we skip the audio files
   if ( clip.Type == siClipAnimationType ) {
       LogMessage( "Found " + clip.MappedItems.Count + " mapped items on " + clip );
       for ( var m=0; m<clip.MappedItems.Count; m++ ) {
          var itm = clip.MappedItems(m);
          LogMessage( "Found this mapped item: " + itm.Source2 + " (a " + ClassName(itm.Source2) + ")" );
       }
   }
}


// Expected results:
//INFO : ----------------------
//INFO : Found a clip of type mixeranimclip under TestModel.Mixer
//INFO : Found 3 mapped items on TestModel.Mixer.Mixer_Anim_Track.StoredAnimFCrvAction_Clip
//INFO : Found this mapped item: FCurve (a FCurve)
//INFO : Found this mapped item: FCurve (a FCurve)
//INFO : Found this mapped item: FCurve (a FCurve)
//INFO : ----------------------
//INFO : Found a clip of type mixeraudioclip under TestModel.Mixer

See Also

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