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Inside Macintosh: 3D Graphics Programming With QuickDraw 3D /
Chapter 18 - QuickDraw 3D Pointing Device Manager / QuickDraw 3D Pointing Device Manager Reference
QuickDraw 3D Pointing Device Manager Routines / Creating and Managing Trackers


Q3Tracker_GetNotifyThresholds

You can use the Q3Tracker_GetNotifyThresholds function to get the current notify thresholds of a tracker.

TQ3Status Q3Tracker_GetNotifyThresholds (
TQ3TrackerObject trackerObject, 
float *positionThresh, 
float *orientationThresh);
trackerObject
A tracker object.
positionThresh
On exit, the current position threshold of the specified tracker.
orientationThresh
On exit, the current orientation threshold (in radians) of the specified tracker.
DESCRIPTION
The Q3Tracker_GetNotifyThresholds function returns, in the positionThresh and orientationThresh parameters, the current position and orientation thresholds of the tracker specified by the trackerObject parameter. These thresholds determine whether or not a change in position or orientation is large enough to cause QuickDraw 3D to call the tracker's notify function. Both thresholds for a new tracker are set to 0.


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© Apple Computer, Inc.
11 JUL 1996




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