C++ LLUUID::setNull方法代码示例

//-----------------------------------------------------------------------------
// Return the animation state for a given name
//-----------------------------------------------------------------------------
LLUUID LLAnimationLibrary::stringToAnimState( const std::string& name, BOOL allow_ids )
{
	std::string lower_case_name(name);
	LLStringUtil::toLower(lower_case_name);

	char *true_name = mAnimStringTable.checkString(lower_case_name.c_str());

	LLUUID id;
	id.setNull();

	if (true_name)
	{
		for (anim_map_t::iterator iter = mAnimMap.begin();
			 iter != mAnimMap.end(); iter++)
		{
			if (iter->second == true_name)
			{
				id = iter->first;
				break;
			}
		}
	}
	else if (allow_ids)
	{
		// try to convert string to LLUUID
		id.set(name, FALSE);
	}

	return id;
}

void LLNearbyChatBar::displaySpeakingIndicator()
{
	LLSpeakerMgr::speaker_list_t speaker_list;
	LLUUID id;

	id.setNull();
	mSpeakerMgr->update(TRUE);
	mSpeakerMgr->getSpeakerList(&speaker_list, FALSE);

	for (LLSpeakerMgr::speaker_list_t::iterator i = speaker_list.begin(); i != speaker_list.end(); ++i)
	{
		LLPointer<LLSpeaker> s = *i;
		if (s->mSpeechVolume > 0 || s->mStatus == LLSpeaker::STATUS_SPEAKING)
		{
			id = s->mID;
			break;
		}
	}

	if (!id.isNull())
	{
		mOutputMonitor->setVisible(TRUE);
		mOutputMonitor->setSpeakerId(id);
	}
	else
	{
		mOutputMonitor->setVisible(FALSE);
	}
}

//////////////////////////////////////////////////////////////////////////////////////////
// static
void LLViewerMediaImpl::updateMovieImage(const LLUUID& uuid, BOOL active)
{
	// IF the media image hasn't changed, do nothing
	if (mMovieImageID == uuid)
	{
		return;
	}
	// If we have changed media uuid, restore the old one
	if (!mMovieImageID.isNull())
	{
		LLViewerImage* oldImage = LLViewerImage::getImage( mMovieImageID );
		if (oldImage)
		{
			oldImage->reinit(mMovieImageHasMips);
			oldImage->mIsMediaTexture = FALSE;
		}
		mMovieImageID.setNull();
	}
	// If the movie is playing, set the new media image
	if (active && !uuid.isNull())
	{
		LLViewerImage* viewerImage = LLViewerImage::getImage( uuid );
		if( viewerImage )
		{
			mMovieImageID = uuid;
			// Can't use mipmaps for movies because they don't update the full image
			mMovieImageHasMips = viewerImage->getUseMipMaps();
			viewerImage->reinit(FALSE);
			viewerImage->mIsMediaTexture = TRUE;
		}
	}
}

void NearbyVoiceMonitor::draw()
{
	LLSpeakerMgr::speaker_list_t speaker_list;
	LLUUID id;
	BOOL draw=FALSE;

	id.setNull();
	mSpeakerMgr->update(TRUE);
	mSpeakerMgr->getSpeakerList(&speaker_list, FALSE);

	for (LLSpeakerMgr::speaker_list_t::iterator i = speaker_list.begin(); i != speaker_list.end(); ++i)
	{
		LLPointer<LLSpeaker> s = *i;
		if (s->mSpeechVolume > 0 || s->mStatus == LLSpeaker::STATUS_SPEAKING)
		{
			draw=TRUE;
			id = s->mID;
			break;
		}
	}

	setSpeakerId(id);
	switchIndicator(true); // Ansa: Make sure the output monitor is visible at all times

	if(!mAutoHide || draw)
	{
		LLOutputMonitorCtrl::draw();
	}
}

void LLParcel::expireSale(
	U32& type,
	U8& flags,
	LLUUID& from_id,
	LLUUID& to_id)
{
    mSaleTimerExpires.setTimerExpirySec(0.0);
    mSaleTimerExpires.stop();
    setPreviousOwnerID(LLUUID::null);
    setPreviouslyGroupOwned(FALSE);
    setSellWithObjects(FALSE);
    type = TRANS_LAND_RELEASE;
    mStatus = OS_NONE;
    flags = pack_transaction_flags(mGroupOwned, FALSE);
    mAuthBuyerID.setNull();
    from_id = mOwnerID;
    mOwnerID.setNull();
    to_id.setNull();
}

 void done()			{
     mID.setNull();
 }