WTInstantTracker Class Reference

Inherits from	NSObject
Declared in	WTInstantTracker.h

Overview

Instant trackers start in initializing state, during which the origin of the tracked scene can be set by rotating the device. Displaying a gravity aligned plane or target in the center of the screen can help users through this process. After this was set, the instant tracker can instantly transition to the tracking state, during which the actual tracking of the scene takes place.

`delegate`

The delegate object that is associated with this instant tracker object.

@property (nonatomic, weak) id<WTInstantTrackerDelegate> delegate

Discussion

The delegate object is usually set through the appropriate WTTrackerManager factory method.

Declared In

WTInstantTracker.h

`– setActiveInstantTrackingState:`

Changes the tracking state of the instant tracker

- (void)setActiveInstantTrackingState:(WTInstantTrackingState)state

Parameters

`state`	The new state to which the instant tracker should switch to

Discussion

The tracking state is not changed immediately, and the didChangeState method can be used to get notified of exactly when that happens.

Declared In

WTInstantTracker.h

`– setDeviceHeightAboveGround:`

Allows changing the estimated height at which the device is currently above the ground.

- (void)setDeviceHeightAboveGround:(NSNumber *)height

Parameters

`height`	The estimated device height above the ground

Discussion

Setting this to an appropriate value will allow the augmentations to have a scale close to the one they would have in reality.

Declared In

WTInstantTracker.h