WVR_CacheSpatialAnchor

WVR_EXPORT WVR_Result WVR_CacheSpatialAnchor(const WVR_SpatialAnchorCacheInfo * spatialAnchorCacheInfo)

Function is used to build and store a cache anchor from previous created spatial anchor.

Developers use this API to build and store a cache anchor on runtime. The cached anchors is SLAM tracking map dependent. They will be effected by runtime once the SLAM map is reset and re-create for this room.

Note: Once the cached spatial anchor list has been changed, the corresponding event (WVR_EventType) will be fired. This API will cause WVR_EventType_CachedAnchor_Changed event.

Version

API Level 14

Parameters

• spatialAnchorCacheInfo: creation information from previous created spatial anchor and give a cachedSpatialAnchorName, refer to WVR_SpatialAnchorCacheInfo

Return Value

• WVR_Success: Build and store a cache anchor successfully.
• others: WVR_Result mean failure.

How to use

Sample function:

// the anchor is WVR_SpatialAnchor handle, which is created before
WVR_SpatialAnchorCacheInfo cacheInfo = {anchor, "uniqueCacheName"};
if (WVR_CacheSpatialAnchor(&cacheInfo) == WVR_Success) {
    // cache the anchor successfully
}

// somewhere to listen cached spatial anchor list change event
void ProcessEvent() {
    WVR_Event_t event;
    while(WVR_PollEventQueue(&event)) {
        switch (event.common.type) {
            case WVR_EventType_CachedAnchor_Changed: {
                // .....

                break;
            }
        }
    }
}