File: Core\CSharp\System\Windows\Media\Animation\PathAnimationSource.cs
Project: wpf\src\PresentationCore.csproj (PresentationCore)
// PathAnimationSource.cs
 
namespace System.Windows.Media.Animation
{
    // IMPORTANT: If you change public Enums, TimeEnumHelper.cs must be updated
    //  to reflect the maximum enumerated values for the public enums.
 
    /// <summary>
    /// Enumeration of the possible output values of a path that may be
    /// used by a path animation.
    /// </summary>
    public enum PathAnimationSource : byte
    {
        /// <summary>
        /// Represent the X offset of the progress along the path.
        /// </summary>
        X                   = 0,
 
        /// <summary>
        /// Represent the Y offset of the progress along the path.
        /// </summary>
        Y                   = 1,
 
        /// <summary>
        /// Represents the tangent angle of rotation of the progress along the path.
        /// </summary>
        Angle               = 2,
    }
}