WTInstantTrackerDelegate Protocol Reference
| Declared in | WTInstantTracker.h |
|---|
Overview
Matrix pointer that are provided inside the WTInstantTarget objects are only valid in the current method scope. If they are needed at a later point in time, they have to be copied into different memory that is controlled by the Wikitude Native SDK hosting application.
– instantTracker:didChangeState:
required method
Called whenever a tracker changes its state internally as a result of calling setActiveInstantTrackingState: on it.
- (void)instantTracker:(nonnull WTInstantTracker *)instantTracker didChangeState:(WTInstantTrackingState)newStateParameters
instantTracker |
The tracker object whose state changed |
|---|---|
newState |
The new state of the tracker |
Declared In
WTInstantTracker.h
– instantTracker:didChangeInitializationPose:
required method
Called whenever an initialization update is being sent by the instant tracker. The tracking data can be used to draw gravity a aligned plane or other augmentations while the tracker is in the initialization state.
- (void)instantTracker:(nonnull WTInstantTracker *)instantTracker didChangeInitializationPose:(nonnull WTInitializationPose *)poseParameters
instantTracker |
The tracker object that sent the initialization update. |
|---|---|
pose |
Information about the gravity aligned plane |
Declared In
WTInstantTracker.h
– instantTrackerDidStartTracking:
required method
Called whenever a tracker starts tracking the scene for the first time or after it was lost.
- (void)instantTrackerDidStartTracking:(nonnull WTInstantTracker *)instantTrackerParameters
instantTracker |
The tracker object that recognized the scene |
|---|
Declared In
WTInstantTracker.h
– instantTracker:didTrack:
required method
Called whenever the current scene is being tracked again.
- (void)instantTracker:(nonnull WTInstantTracker *)instantTracker didTrack:(nonnull WTInstantTarget *)targetParameters
instantTracker |
The tracker object that tracked scene |
|---|---|
target |
Information about the scene being tracked |
Declared In
WTInstantTracker.h
– instantTrackerDidStopTracking:
required method
Called whenever the current scene is lost
- (void)instantTrackerDidStopTracking:(nonnull WTInstantTracker *)instantTrackerParameters
instantTracker |
The tracker object that lost the scene. |
|---|
Discussion
All WTInstantTarget matrix pointer are set to nullptr and should not be used.
Declared In
WTInstantTracker.h