/// @brief updates the skeleton
///
/// This method is responsible for updating the skeleton based on new information.
/// It is called by an external manager with the correct user which controls this specific skeleton.
/// @param userID the user id of the user which controls us. @note this is the NI user ID!
/// @param skeleton the skeleton object to use.
/// @param centerOffset the offset we should use on the center (when moving the root).
/// This is usually the starting position (so the skeleton will not "jump" when doing the first update
public void UpdateSkeleton(int userID, NIUserAndSkeleton skeleton, Vector3 centerOffset)
{
if (skeleton.Valid == false)
{
return; // no skeleton
}
if (skeleton.GetUserCalibrationState(userID) != NIUserAndSkeleton.CalibrationState.calibrated)
{
return; // we are not calibrated.
}
if (skeleton.Skeleton.IsTracking(userID) == false)
{
return; // we are not tracking
}
// we use the torso as root
SkeletonJointTransformation skelTrans = skeleton.Skeleton.GetSkeletonJoint(userID, SkeletonJoint.Torso);
UpdateRoot(skelTrans.Position, centerOffset);
// update each joint with data from OpenNI
foreach (SkeletonJoint joint in Enum.GetValues(typeof(SkeletonJoint)))
{
if (skeleton.Skeleton.IsJointAvailable(joint))
{
SkeletonJointTransformation skelTransJoint = skeleton.Skeleton.GetSkeletonJoint(userID, joint);
UpdateJoint(joint, skelTransJoint, skelTrans.Position);
}
}
}
/// @brief initializes the class with a new user.
///
/// initializes the class with a new user (The class is invalid (m_uniqueID<0) until this is done successfully)
/// @param usersGenerator the users generator which holds the users.
/// @param uniqueID the uniqueID of the user we should initialize to.
/// @return true on success and false on failure (making the object invalid, i.e. m_uniqueID<0).
public bool InitInternalSkeleton(NIUserAndSkeleton usersGenerator, int uniqueID)
{
m_uniqueID = -1; // to make sure we are invalid until we are sure we are valid.
if (usersGenerator.Valid == false)
return false; // must have a valid users generator to do anything
m_userID = usersGenerator.GetNIUserId(uniqueID);
if (m_userID < 0)
return false; // means the uniqueID was illegal
if (usersGenerator.GetUserCalibrationState(m_userID) != NIUserAndSkeleton.CalibrationState.calibrated)
return false; // we only initialize calibrated users as we need the skeleton.
int numJoints = 0; // holds the place to position the next joint.
foreach (SkeletonJoint joint in Enum.GetValues(typeof(SkeletonJoint)))
{
if (usersGenerator.Skeleton.IsJointAvailable(joint)==false)
continue; // an irrelevant joint.
// we need to add the joint but we don't want to create a new one unless we need to.
if (numJoints < m_jointsIDs.Count)
{
m_jointsIDs[numJoints] = joint;
}
else
{
m_jointsIDs.Add(joint);
}
// we need to add the joint transformation but we don't want to create a new one unless we need to.
if(numJoints<m_jointsTrans.Count)
{
m_jointsTrans[numJoints]=usersGenerator.Skeleton.GetSkeletonJoint(m_userID, joint);
}
else
{
SkeletonJointTransformation skelTrans = usersGenerator.Skeleton.GetSkeletonJoint(m_userID, joint);
m_jointsTrans.Add(skelTrans);
}
numJoints++;
}
if (numJoints < m_jointsIDs.Count)
{
for (; numJoints < m_jointsIDs.Count; numJoints++)
m_jointsIDs[numJoints] = SkeletonJoint.Invalid;
}
m_uniqueID = uniqueID;
return true;
}
