Keyframe animation of parameters is organized in tracks, curves and keys.

• A CTrack stores the animation data of a single parameter. See CTrack Manual
• A CCurve is stored in such a track and represents an animation curve. See CCurve Manual
• Multiple CKey elements define such an animation curve. See CKey Manual

其它相关类：

• 类 BaseList2D gives access to the stored animation tracks. See BaseList2D Manual .
• A BaseDocument stores animated elements and can be used to animate these elements. See 动画 .
• A BaseTime object represents a certain frame and is used to define the position in time of a certain CKey 。见 BaseTime 手册 .