private static extern HRESULT NuiSkeletonGetNextFrame(uint dwMillisecondsToWait, ref NuiSkeletonFrame pSkeletonFrame);
private static extern HRESULT NuiTransformSmooth(ref NuiSkeletonFrame pSkeletonFrame, ref TransformSmoothParameters pSmoothingParams);
internal SkeletonFrame OpenNextFrame()
{
var frame = new NuiSkeletonFrame();
// Get the next NuiSkeletonFrame.
var res = NuiSkeletonGetNextFrame(0, ref frame);
if (res == HRESULT.S_FALSE) return null;
if (res != HRESULT.S_OK) throw new KinectException("Failed to get next frame");
// Apply TransformSmoothing.
if (TransformSmooth)
res = NuiTransformSmooth(ref frame, ref smoothParameters);
if (res == HRESULT.S_FALSE) return null;
if (res != HRESULT.S_OK) throw new KinectException("Failed to get next frame");
// Read every native SkeletonData object into a Skeleton object.
for (int index = 0; index < frame.skeletonData.Length; index++) {
var nuiData = frame.skeletonData[index];
if (nuiData.eTrackingState == SkeletonTrackingState.Tracked) {
var joints = new List<Joint>();
for (int i = 0; i < nuiData.skeletonPositions.Length; i++)
joints.Add(new Joint((JointType)i, nuiData.skeletonPositions[i], nuiData.eSkeletonPositionTrackingState[i]));
var collection = new JointCollection(joints);
skeletonData[index] = new Skeleton(nuiData.eTrackingState, (int)nuiData.dwTrackingID, (int)nuiData.dwEnrollmentIndex, nuiData.position, collection);
} else skeletonData[index] = new Skeleton();
}
return new SkeletonFrame(frame.liTimeStamp, (int)frame.dwFrameNumber, frame.vFloorClipPlane, skeletonData);
}