poIImagePlane GetLastFrameTracked

Gets the index of the last frame for which video tracking has been given.

Syntax

Imageplane_handle GetLastFrameTracked

Application

HyperView Tcl Query

Description

The CalcVidTracking command gets data for each frame, however sometimes the tracking point is lost and no additional data is given after that point. This command returns the index of the last frame with data. Starting from the beginning, it gives the number of frames that have tracking data. After this many frames, the video will not be tracked.

Example

To find out how many frames have video tracking data:

hwi OpenStack
hwi GetSessionHandle session_handle
session_handle GetProjectHandle project_handle
project_handle GetPageHandle page_handle [project_handle GetActivePage]
page_handle GetWindowHandle window_handle [page_handle GetActiveWindow]
window_handle GetClientHandle client_handle
client_handle GetImagePlaneCtrlHandle ipc_handle
ipc_handle GetImagePlaneHandle image_plane_handle 1
image_plane_handle GetLastFrameTracked
hwi CloseStack

Errors

Returns HW_InvalidHandle if the image plane handle is invalid.