OpenNI 1.5.4: Hands Generator



XN_C_API XnStatus XN_C_DECL xnCreateHandsGenerator (XnContext *pContext, XnNodeHandle *phHandsGenerator, XnNodeQuery *pQuery, XnEnumerationErrors *pErrors)
XN_C_API XnStatus XN_C_DECL xnRegisterHandCallbacks (XnNodeHandle hInstance, XnHandCreate CreateCB, XnHandUpdate UpdateCB, XnHandDestroy DestroyCB, void *pCookie, XnCallbackHandle *phCallback)
XN_C_API void XN_C_DECL xnUnregisterHandCallbacks (XnNodeHandle hInstance, XnCallbackHandle hCallback)
XN_C_API XnStatus XN_C_DECL xnStopTracking (XnNodeHandle hInstance, XnUserID user)
XN_C_API XnStatus XN_C_DECL xnStopTrackingAll (XnNodeHandle hInstance)
XN_C_API XnStatus XN_C_DECL xnStartTracking (XnNodeHandle hInstance, const XnPoint3D *pPosition)
XN_C_API XnStatus XN_C_DECL xnSetTrackingSmoothing (XnNodeHandle hInstance, XnFloat fFactor)

Detailed Description

A Hands Generator node is a Generator that tracks hand points. It supports all Generator functions, and adds additional functions.

Function Documentation

XN_C_API XnStatus XN_C_DECL xnCreateHandsGenerator ( XnContext pContext,
XnNodeHandle phHandsGenerator,
XnNodeQuery pQuery,
XnEnumerationErrors pErrors 

Creates an hands generator.

pContext[in] The context in which to create the hands generator.
phHandsGenerator[out] A handle to the created hands generator.
pQuery[in] Optional. Can be used to select which hands generator to create. If not specified, this function may create any hands generator that is available.
pErrors[in] Optional. If provided, will be filled with information about hands generators that could not be created.
XN_C_API XnStatus XN_C_DECL xnRegisterHandCallbacks ( XnNodeHandle  hInstance,
XnHandCreate  CreateCB,
XnHandUpdate  UpdateCB,
XnHandDestroy  DestroyCB,
void *  pCookie,
XnCallbackHandle phCallback 

Register to hands callbacks.

hInstance[in] A handle to the instance
CreateCB[in] Callback to be called when a new hand is created
UpdateCB[in] Callback to be called when an existing hand has a new position
DestroyCB[in] Callback to be called when an existing hand has vanished
pCookie[in] User's cookie, to be delivered to the callbacks
phCallback[out] The handle to these callbacks, to allow unregistration
XN_C_API XnStatus XN_C_DECL xnSetTrackingSmoothing ( XnNodeHandle  hInstance,
XnFloat  fFactor 

Change smoothing factor.

hInstance[in] A handle to the instance
fFactor[in] Smoothing factor, in the range 0..1. 0 Means no smoothing, 1 means infinite smoothing. Inside the range is generator dependent.
XN_C_API XnStatus XN_C_DECL xnStartTracking ( XnNodeHandle  hInstance,
const XnPoint3D pPosition 

Start tracking at a specific position.

hInstance[in] A handle to the instance
pPosition[in] The position at which there is a new hand
XN_C_API XnStatus XN_C_DECL xnStopTracking ( XnNodeHandle  hInstance,
XnUserID  user 

Stop tracking a specific hand.

hInstance[in] A handle to the instance
user[in] The hand to stop tracking
XN_C_API XnStatus XN_C_DECL xnStopTrackingAll ( XnNodeHandle  hInstance)

Stop tracking all hands.

hInstance[in] A handle to the instance
XN_C_API void XN_C_DECL xnUnregisterHandCallbacks ( XnNodeHandle  hInstance,
XnCallbackHandle  hCallback 

Unregister from hands callbacks.

hInstance[in] A handle to the instance
hCallback[in] The handle received from registration
Generated on Wed May 16 2012 10:16:06 for OpenNI 1.5.4 by   doxygen