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Describes an animation track and specifies blending weight, speed, and position for the track at a given time.
typedef struct D3DXTRACK_DESC {
    D3DXPRIORITY_TYPE Priority;
    FLOAT Weight;
    FLOAT Speed;
    DOUBLE Position;
    BOOL Enable;
} D3DXTRACK_DESC, *LPD3DXTRACK_DESC;
                    
                
            
            
                
Tracks with the same priority are blended together, and the two resulting values are then blended using the priority blend factor. A track must have an animation set (stored separately) associated with it.