OpenNI 1.5.7
Functions
Alternative View Point Capability

Functions

XN_C_API XnBool XN_C_DECL xnIsViewPointSupported (XnNodeHandle hInstance, XnNodeHandle hOther)
 
XN_C_API XnStatus XN_C_DECL xnSetViewPoint (XnNodeHandle hInstance, XnNodeHandle hOther)
 
XN_C_API XnStatus XN_C_DECL xnResetViewPoint (XnNodeHandle hInstance)
 
XN_C_API XnBool XN_C_DECL xnIsViewPointAs (XnNodeHandle hInstance, XnNodeHandle hOther)
 
XN_C_API XnStatus XN_C_DECL xnRegisterToViewPointChange (XnNodeHandle hInstance, XnStateChangedHandler handler, void *pCookie, XnCallbackHandle *phCallback)
 
XN_C_API void XN_C_DECL xnUnregisterFromViewPointChange (XnNodeHandle hInstance, XnCallbackHandle hCallback)
 
XN_C_API XnStatus XN_C_DECL xnGetPixelCoordinatesInViewPoint (XnNodeHandle hInstance, XnNodeHandle hOther, XnUInt32 x, XnUInt32 y, XnUInt32 *pAltX, XnUInt32 *pAltY)
 

Detailed Description

Function Documentation

◆ xnGetPixelCoordinatesInViewPoint()

XN_C_API XnStatus XN_C_DECL xnGetPixelCoordinatesInViewPoint ( XnNodeHandle  hInstance,
XnNodeHandle  hOther,
XnUInt32  x,
XnUInt32  y,
XnUInt32 *  pAltX,
XnUInt32 *  pAltY 
)

Gets a single pixel coordinates in an alternative view point. This method uses current frame data.

Parameters
hInstance[in] A handle to the instance.
hOther[in] The view point to translate to.
x[in] X-coordinate of the pixel to be translated
y[in] Y-coordinate of the pixel to be translated
pAltX[out] X-coordinate of the pixel in the alternative view point
pAltY[out] Y-coordinate of the pixel in the alternative view point
Returns
XN_STATUS_INVALID_OPERATION Generator doesn't support this method.

◆ xnIsViewPointAs()

XN_C_API XnBool XN_C_DECL xnIsViewPointAs ( XnNodeHandle  hInstance,
XnNodeHandle  hOther 
)

Checks if current view point is as if coming from the other node view point.

Parameters
hInstance[in] A handle to the instance.
hOther[in] The view point to be checked.

◆ xnIsViewPointSupported()

XN_C_API XnBool XN_C_DECL xnIsViewPointSupported ( XnNodeHandle  hInstance,
XnNodeHandle  hOther 
)

Checks if this generator can change its output to look like it was taken from a different location, represented by another generator.

Parameters
hInstance[in] A handle to the instance.
hOther[in] The view point to be checked.
Returns
TRUE if view point is supported, FALSE otherwise.

◆ xnRegisterToViewPointChange()

XN_C_API XnStatus XN_C_DECL xnRegisterToViewPointChange ( XnNodeHandle  hInstance,
XnStateChangedHandler  handler,
void *  pCookie,
XnCallbackHandle phCallback 
)

Registers a callback function to view point changes.

Parameters
hInstance[in] A handle to the instance.
handler[in] A pointer to a function that will be called when view point changes.
pCookie[in] A user cookie that will be passed to the callback function.
phCallback[out] Optional. Will be filled with a handle to be passed to xnUnregisterFromViewPointChange().

◆ xnResetViewPoint()

XN_C_API XnStatus XN_C_DECL xnResetViewPoint ( XnNodeHandle  hInstance)

Sets the view point of this generator to its normal one.

Parameters
hInstance[in] A handle to the instance.

◆ xnSetViewPoint()

XN_C_API XnStatus XN_C_DECL xnSetViewPoint ( XnNodeHandle  hInstance,
XnNodeHandle  hOther 
)

Sets the view point of this generator to look like as if placed at another generator location.

Parameters
hInstance[in] A handle to the instance.
hOther[in] The view point to be set.

◆ xnUnregisterFromViewPointChange()

XN_C_API void XN_C_DECL xnUnregisterFromViewPointChange ( XnNodeHandle  hInstance,
XnCallbackHandle  hCallback 
)

Unregisters a callback function which was registered using xnRegisterToViewPointChange().

Parameters
hInstance[in] A handle to the instance.
hCallback[in] The handle to the callback returned from xnRegisterToViewPointChange().