Kinect2.0骨架绘制-仅上半身；c#

Question

我正在做一个使用kinect 2.0传感器的项目。

在用户上绘制骨架非常简单，但是如果只绘制某些部分，甚至绘制整个骨架，但如果身体的某些部分(脚，腿……)都在摄像头的视野范围之外，怎么不画呢？

我使用的是Vitruvius库和标准的kinect 2.0库。

 //depth
 using (var depthFrame = reference.DepthFrameReference.AcquireFrame())

 //Body index
 using (var bodyIndexFrame = reference.BodyIndexFrameReference.AcquireFrame())



 // Body
 using (var bodyframe = reference.BodyFrameReference.AcquireFrame())
 {
      var bodies = bodyframe.Bodies();
       ...
      _playersController.Update(bodies);
       ...
       Body body = bodies.Closest();
       viewer.Clear();
       viewer.DrawBody(body, 10.0, Brushes.Green, 10.0, Brushes.Green);
       ...
}

这就是我画身体的方式，它是有效的。如果我转到'DrawBody()‘定义，我得到这个：

public void DrawBody(Body body, double jointRadius, Brush jointBrush, double boneThickness, Brush boneBrush);

如果我转到body definition (这样我就可以选择要绘制的关节)，我会发现：

//
    // Summary:
    //     Represents a single body.
    public sealed class Body
    {
        ~Body();

        //
        // Summary:
        //     Gets the number of joints in a body.
        public static int JointCount { get; }
        //
        // Summary:
        //     Gets the lean vector of the body.
        public PointF Lean { get; }
        //
        // Summary:
        //     Gets whether or not the body is restricted.
        public bool IsRestricted { get; }
        //
        // Summary:
        //     Gets whether or not the body is tracked.
        public bool IsTracked { get; }
        //
        // Summary:
        //     Gets the tracking ID for the body.
        public ulong TrackingId { get; }
        //
        // Summary:
        //     Gets the edges of the field of view that clip the body.
        public FrameEdges ClippedEdges { get; }
        //
        // Summary:
        //     Gets the status of the body's engagement. This API is not implemented in the
        //     Kinect for Windows v2 SDK. It is included to support cross-compilation with the
        //     Xbox SDK.
        [Obsolete("This API has been replaced by Microsoft.Kinect.Face", true)]
        public DetectionResult Engaged { get; }
        //
        // Summary:
        //     Gets the joint positions of the body.
        public IReadOnlyDictionary<JointType, Joint> Joints { get; }
        //
        // Summary:
        //     Gets the status of the body's right hand state.
        public HandState HandRightState { get; }
        //
        // Summary:
        //     Gets the confidence of the body's left hand state.
        public TrackingConfidence HandLeftConfidence { get; }
        //
        // Summary:
        //     Gets the status of the body's left hand state.
        public HandState HandLeftState { get; }
        //
        // Summary:
        //     Gets the status of the body's possible appearance characteristics. This API is
        //     not implemented in the Kinect for Windows v2 SDK and will always return null.
        //     It is included to support cross-compilation with the Xbox SDK.
        [Obsolete("This API has been replaced by Microsoft.Kinect.Face", true)]
        public IReadOnlyDictionary<Appearance, DetectionResult> Appearance { get; }
        //
        // Summary:
        //     Gets the status of the body's possible activities. This API is not implemented
        //     in the Kinect for Windows v2 SDK and will always return null. It is included
        //     to support cross-compilation with the Xbox SDK.
        [Obsolete("This API has been replaced by Microsoft.Kinect.Face", true)]
        public IReadOnlyDictionary<Activity, DetectionResult> Activities { get; }
        //
        // Summary:
        //     Gets the status of the body's possible expressions. This API is not implemented
        //     in the Kinect for Windows v2 SDK and will always return null. It is included
        //     to support cross-compilation with the Xbox SDK.
        [Obsolete("This API has been replaced by Microsoft.Kinect.Face", true)]
        public IReadOnlyDictionary<Expression, DetectionResult> Expressions { get; }
        //
        // Summary:
        //     Gets the joint orientations of the body.
        public IReadOnlyDictionary<JointType, JointOrientation> JointOrientations { get; }
        //
        // Summary:
        //     Gets the tracking state for the body lean.
        public TrackingState LeanTrackingState { get; }
        //
        // Summary:
        //     Gets the confidence of the body's right hand state.
        public TrackingConfidence HandRightConfidence { get; }
    }

这真的没有什么帮助。它说在哪里画什么？我甚至可以只画某些部分吗？我看到一个人之前只画了上半身，但没有解释他是如何做到的。