WVR_DestroySpatialAnchor

WVR_EXPORT WVR_Result WVR_DestroySpatialAnchor(WVR_SpatialAnchor anchor)

Function is used to destroy a spatial anchor.

Developers use this API to destroy an anchor handle.

Note: Since API Level 14, once the spatial anchor list has been changed, the corresponding event (WVR_EventType) will be fired. This API may cause WVR_EventType_SpatialAnchor_Changed event.

Version

API Level 11

Parameters

• anchor: the spatial anchor that developers would like to destroy

Return Value

• WVR_Success: Destroy a spatial anchor successfully.
• others: WVR_Result mean failure.

How to use

Sample function:

#include <wvr/wvr_scene.h>
#include <wvr/wvr_anchor.h>

// the anchor is WVR_SpatialAnchor handle, which is created before
if (WVR_DestroySpatialAnchor(anchor) == WVR_Success) {
    // destroy anchor successfully
}

// somewhere to listen spatial anchor list change event
void ProcessEvent() {
    WVR_Event_t event;
    while(WVR_PollEventQueue(&event)) {
        switch (event.common.type) {
            case WVR_EventType_SpatialAnchor_Changed: {
                uint32_t output = 0;
                if (WVR_EnumerateSpatialAnchors(0, &output, nullptr) == WVR_Success) {
                    auto anchors = (WVR_SpatialAnchor*)malloc(sizeof(WVR_SpatialAnchor)*(output));
                    if (WVR_EnumerateSpatialAnchors(output, &output, anchors) == WVR_Success) {
                        // enumerate all spatial anchors successfully
                    }
                }
                break;
            }
        }
    }
}