/// <summary>
/// Queries for the set of human body changes.
/// </summary>
/// <param name="defaultHumanBody">The default human body.</param>
/// <param name="allocator">The memory allocator to use for the returns trackable changes.</param>
/// <returns>
/// The set of human body changes.
/// </returns>
public override unsafe TrackableChanges <XRHumanBody> GetChanges(XRHumanBody defaultHumanBody, Allocator allocator)
{
int numAddedHumanBodies;
void *addedHumanBodiesPointer;
int numUpdatedHumanBodies;
void *updatedHumanBodiesPointer;
int numRemovedHumanBodyIds;
void *removedHumanBodyIdsPointer;
int stride;
var context = NativeApi.UnityARKit_HumanBodyProvider_AcquireChanges(out numAddedHumanBodies, out addedHumanBodiesPointer,
out numUpdatedHumanBodies, out updatedHumanBodiesPointer,
out numRemovedHumanBodyIds, out removedHumanBodyIdsPointer,
out stride);
try
{
// Wrap the navite pointers into a native array and then copy them into a separate native array enabled
// with temporary allocations.
return(new TrackableChanges <XRHumanBody>(
addedHumanBodiesPointer, numAddedHumanBodies,
updatedHumanBodiesPointer, numUpdatedHumanBodies,
removedHumanBodyIdsPointer, numRemovedHumanBodyIds,
defaultHumanBody, stride,
allocator));
}
finally
{
NativeApi.UnityARKit_HumanBodyProvider_ReleaseChanges(context);
}
}