LLPolyMorphData *clone_morph_param_cleavage(const LLPolyMorphData *src_data,
                                            F32 scale,
                                            const std::string &name)
{
        LLPolyMorphData* cloned_morph_data = new LLPolyMorphData(*src_data);
        cloned_morph_data->mName = name;

		LLVector4a sc;
		sc.splat(scale);

		LLVector4a nsc;
		nsc.set(scale, -scale, scale, scale);

        for (U32 v=0; v < cloned_morph_data->mNumIndices; v++)
        {
            if (cloned_morph_data->mCoords[v][1] < 0)
            {
                cloned_morph_data->mCoords[v].setMul(src_data->mCoords[v],nsc);
				cloned_morph_data->mNormals[v].setMul(src_data->mNormals[v],nsc);
				cloned_morph_data->mBinormals[v].setMul(src_data->mBinormals[v],nsc);
			}
			else
			{
				cloned_morph_data->mCoords[v].setMul(src_data->mCoords[v],sc);
				cloned_morph_data->mNormals[v].setMul(src_data->mNormals[v], sc);
				cloned_morph_data->mBinormals[v].setMul(src_data->mBinormals[v],sc);
			}
        }
        return cloned_morph_data;
}
LLViewerOctreeGroup::LLViewerOctreeGroup(OctreeNode* node) :
	mOctreeNode(node),
	mState(CLEAN)
{
	LLVector4a tmp;
	tmp.splat(0.f);
	mExtents[0] = mExtents[1] = mObjectBounds[0] = mObjectBounds[0] = mObjectBounds[1] = 
		mObjectExtents[0] = mObjectExtents[1] = tmp;
	
	mBounds[0] = node->getCenter();
	mBounds[1] = node->getSize();

	mOctreeNode->addListener(this);
}
void LLVOPartGroup::updateSpatialExtents(LLVector4a& newMin, LLVector4a& newMax)
{		
	const LLVector3& pos_agent = getPositionAgent();

	LLVector4a scale;
	LLVector4a p;

	p.load3(pos_agent.mV);

	scale.splat(mScale.mV[0]+mViewerPartGroupp->getBoxSide()*0.5f);

	newMin.setSub(p, scale);
	newMax.setAdd(p,scale);

	llassert(newMin.isFinite3());
	llassert(newMax.isFinite3());

	llassert(p.isFinite3());
	mDrawable->setPositionGroup(p);
}
예제 #4
0
void LLSpatialBridge::updateSpatialExtents()
{
	LLSpatialGroup* root = (LLSpatialGroup*) mOctree->getListener(0);
	
	{
		LLFastTimer ftm(FTM_CULL_REBOUND);
		root->rebound();
	}
	
	LLVector4a offset;
	LLVector4a size = root->mBounds[1];
		
	//VECTORIZE THIS
	LLMatrix4a mat;
	mat.loadu(mDrawable->getXform()->getWorldMatrix());

	LLVector4a t;
	t.splat(0.f);

	LLVector4a center;
	mat.affineTransform(t, center);
	
	mat.rotate(root->mBounds[0], offset);
	center.add(offset);
	
	LLVector4a v[4];

	//get 4 corners of bounding box
	mat.rotate(size,v[0]);

	LLVector4a scale;
	
	scale.set(-1.f, -1.f, 1.f);
	scale.mul(size);
	mat.rotate(scale, v[1]);
	
	scale.set(1.f, -1.f, -1.f);
	scale.mul(size);
	mat.rotate(scale, v[2]);
	
	scale.set(-1.f, 1.f, -1.f);
	scale.mul(size);
	mat.rotate(scale, v[3]);

	
	LLVector4a& newMin = mExtents[0];
	LLVector4a& newMax = mExtents[1];
	
	newMin = newMax = center;
	
	for (U32 i = 0; i < 4; i++)
	{
		LLVector4a delta;
		delta.setAbs(v[i]);
		LLVector4a min;
		min.setSub(center, delta);
		LLVector4a max;
		max.setAdd(center, delta);

		newMin.setMin(newMin, min);
		newMax.setMax(newMax, max);
	}
	
	LLVector4a diagonal;
	diagonal.setSub(newMax, newMin);
	mRadius = diagonal.getLength3().getF32() * 0.5f;
	
	mPositionGroup.setAdd(newMin,newMax);
	mPositionGroup.mul(0.5f);
	updateBinRadius();
}
void LLPanelPrimMediaControls::updateShape()
{
	LLViewerMediaImpl* media_impl = getTargetMediaImpl();
	LLViewerObject* objectp = getTargetObject();
	
	if(!media_impl || gFloaterTools->getVisible())
	{
		setVisible(FALSE);
		return;
	}

	LLPluginClassMedia* media_plugin = NULL;
	if(media_impl->hasMedia())
	{
		media_plugin = media_impl->getMediaPlugin();
	}
	
	LLParcel *parcel = LLViewerParcelMgr::getInstance()->getAgentParcel();

	bool can_navigate = parcel->getMediaAllowNavigate();
	bool enabled = false;
	bool is_zoomed = (mCurrentZoom != ZOOM_NONE) && (mTargetObjectID == mZoomObjectID) && (mTargetObjectFace == mZoomObjectFace);
	// There is no such thing as "has_focus" being different from normal controls set
	// anymore (as of user feedback from bri 10/09).  So we cheat here and force 'has_focus'
	// to 'true' (or, actually, we use a setting)
	bool has_focus = (gSavedSettings.getBOOL("PrimMediaControlsUseHoverControlSet")) ? media_impl->hasFocus() : true;
	setVisible(enabled);

	if (objectp)
	{
		bool mini_controls = false;
		LLMediaEntry *media_data = objectp->getTE(mTargetObjectFace)->getMediaData();
		if (media_data && NULL != dynamic_cast<LLVOVolume*>(objectp))
		{
			// Don't show the media controls if we do not have permissions
			enabled = dynamic_cast<LLVOVolume*>(objectp)->hasMediaPermission(media_data, LLVOVolume::MEDIA_PERM_CONTROL);
			mini_controls = (LLMediaEntry::MINI == media_data->getControls());
		}
		const bool is_hud = objectp->isHUDAttachment();
		
		//
		// Set the state of the buttons
		//
		
		// XXX RSP: TODO: FIXME: clean this up so that it is clearer what mode we are in,
		// and that only the proper controls get made visible/enabled according to that mode. 
		mBackCtrl->setVisible(has_focus);
		mFwdCtrl->setVisible(has_focus);
		mReloadCtrl->setVisible(has_focus);
		mStopCtrl->setVisible(false);
		mHomeCtrl->setVisible(has_focus);
		mZoomCtrl->setVisible(!is_zoomed);
		mUnzoomCtrl->setVisible(is_zoomed);
		mOpenCtrl->setVisible(true);
		mMediaAddressCtrl->setVisible(has_focus && !mini_controls);
		mMediaPlaySliderPanel->setVisible(has_focus && !mini_controls);
		mVolumeCtrl->setVisible(false);
		
		mWhitelistIcon->setVisible(!mini_controls && (media_data)?media_data->getWhiteListEnable():false);
		// Disable zoom if HUD
		mZoomCtrl->setEnabled(!is_hud);
		mUnzoomCtrl->setEnabled(!is_hud);
		mSecureLockIcon->setVisible(false);
		mCurrentURL = media_impl->getCurrentMediaURL();
		
		mBackCtrl->setEnabled((media_impl != NULL) && media_impl->canNavigateBack() && can_navigate);
		mFwdCtrl->setEnabled((media_impl != NULL) && media_impl->canNavigateForward() && can_navigate);
		mStopCtrl->setEnabled(has_focus && can_navigate);
		mHomeCtrl->setEnabled(has_focus && can_navigate);
		LLPluginClassMediaOwner::EMediaStatus result = ((media_impl != NULL) && media_impl->hasMedia()) ? media_plugin->getStatus() : LLPluginClassMediaOwner::MEDIA_NONE;
		
		mVolumeCtrl->setVisible(has_focus);
		mVolumeCtrl->setEnabled(has_focus);
		mVolumeSliderCtrl->setEnabled(has_focus && shouldVolumeSliderBeVisible());
		mVolumeSliderCtrl->setVisible(has_focus && shouldVolumeSliderBeVisible());

		if(media_plugin && media_plugin->pluginSupportsMediaTime())
		{
			mReloadCtrl->setEnabled(false);
			mReloadCtrl->setVisible(false);
			mMediaStopCtrl->setVisible(has_focus);
			mHomeCtrl->setVisible(has_focus);
			mBackCtrl->setVisible(false);
			mFwdCtrl->setVisible(false);
			mMediaAddressCtrl->setVisible(false);
			mMediaAddressCtrl->setEnabled(false);
			mMediaPlaySliderPanel->setVisible(has_focus && !mini_controls);
			mMediaPlaySliderPanel->setEnabled(has_focus && !mini_controls);
			mSkipFwdCtrl->setVisible(has_focus && !mini_controls);
			mSkipFwdCtrl->setEnabled(has_focus && !mini_controls);
			mSkipBackCtrl->setVisible(has_focus && !mini_controls);
			mSkipBackCtrl->setEnabled(has_focus && !mini_controls);
			
			mVolumeCtrl->setVisible(has_focus);
			mVolumeCtrl->setEnabled(has_focus);
			mVolumeSliderCtrl->setEnabled(has_focus && shouldVolumeSliderBeVisible());
			mVolumeSliderCtrl->setVisible(has_focus && shouldVolumeSliderBeVisible());
			
			mWhitelistIcon->setVisible(false);
			mSecureLockIcon->setVisible(false);
			if (mMediaPanelScroll)
			{
				mMediaPanelScroll->setVisible(false);
				mScrollUpCtrl->setVisible(false);
				mScrollDownCtrl->setVisible(false);
				mScrollRightCtrl->setVisible(false);
				mScrollDownCtrl->setVisible(false);
			}
			
			F32 volume = media_impl->getVolume();
			// movie's url changed
			if(mCurrentURL!=mPreviousURL)
			{
				mMovieDuration = media_plugin->getDuration();
				mPreviousURL = mCurrentURL;
			}
			
			if(mMovieDuration == 0) 
			{
				mMovieDuration = media_plugin->getDuration();
				mMediaPlaySliderCtrl->setValue(0);
				mMediaPlaySliderCtrl->setEnabled(false);
			}
			// TODO: What if it's not fully loaded
			
			if(mUpdateSlider && mMovieDuration!= 0)
			{
				F64 current_time =  media_plugin->getCurrentTime();
				F32 percent = current_time / mMovieDuration;
				mMediaPlaySliderCtrl->setValue(percent);
				mMediaPlaySliderCtrl->setEnabled(true);
			}
			
			// video vloume
			if(volume <= 0.0)
			{
				mMuteBtn->setToggleState(true);
			}
			else if (volume >= 1.0)
			{
				mMuteBtn->setToggleState(false);
			}
			else
			{
				mMuteBtn->setToggleState(false);
			}
			
			switch(result)
			{
				case LLPluginClassMediaOwner::MEDIA_PLAYING:
					mPlayCtrl->setEnabled(FALSE);
					mPlayCtrl->setVisible(FALSE);
					mPauseCtrl->setEnabled(TRUE);
					mPauseCtrl->setVisible(has_focus);
					
					break;
				case LLPluginClassMediaOwner::MEDIA_PAUSED:
				default:
					mPauseCtrl->setEnabled(FALSE);
					mPauseCtrl->setVisible(FALSE);
					mPlayCtrl->setEnabled(TRUE);
					mPlayCtrl->setVisible(has_focus);
					break;
			}
		}
		else   // web based
		{
			if(media_plugin)
			{
				mCurrentURL = media_plugin->getLocation();
			}
			else
			{
				mCurrentURL.clear();
			}
			
			mPlayCtrl->setVisible(FALSE);
			mPauseCtrl->setVisible(FALSE);
			mMediaStopCtrl->setVisible(FALSE);
			mMediaAddressCtrl->setVisible(has_focus && !mini_controls);
			mMediaAddressCtrl->setEnabled(has_focus && !mini_controls);
			mMediaPlaySliderPanel->setVisible(FALSE);
			mMediaPlaySliderPanel->setEnabled(FALSE);
			mSkipFwdCtrl->setVisible(FALSE);
			mSkipFwdCtrl->setEnabled(FALSE);
			mSkipBackCtrl->setVisible(FALSE);
			mSkipBackCtrl->setEnabled(FALSE);
			
			if(media_impl->getVolume() <= 0.0)
			{
				mMuteBtn->setToggleState(true);
			}
			else
			{
				mMuteBtn->setToggleState(false);
			}

			if (mMediaPanelScroll)
			{
				mMediaPanelScroll->setVisible(has_focus);
				mScrollUpCtrl->setVisible(has_focus);
				mScrollDownCtrl->setVisible(has_focus);
				mScrollRightCtrl->setVisible(has_focus);
				mScrollDownCtrl->setVisible(has_focus);
			}
			// TODO: get the secure lock bool from media plug in
			std::string prefix =  std::string("https://");
			std::string test_prefix = mCurrentURL.substr(0, prefix.length());
			LLStringUtil::toLower(test_prefix);
			if(test_prefix == prefix)
			{
				mSecureLockIcon->setVisible(has_focus);
			}
			
			if(mCurrentURL!=mPreviousURL)
			{
				setCurrentURL();
				mPreviousURL = mCurrentURL;
			}
			
			if(result == LLPluginClassMediaOwner::MEDIA_LOADING)
			{
				mReloadCtrl->setEnabled(FALSE);
				mReloadCtrl->setVisible(FALSE);
				mStopCtrl->setEnabled(TRUE);
				mStopCtrl->setVisible(has_focus);
			}
			else
			{
				mReloadCtrl->setEnabled(TRUE);
				mReloadCtrl->setVisible(has_focus);
				mStopCtrl->setEnabled(FALSE);
				mStopCtrl->setVisible(FALSE);
			}
		}
		
		
		if(media_plugin)
		{
			//
			// Handle progress bar
			//
			if(LLPluginClassMediaOwner::MEDIA_LOADING == media_plugin->getStatus())
			{	
				mMediaProgressPanel->setVisible(true);
				mMediaProgressBar->setValue(media_plugin->getProgressPercent());
			}
			else
			{
				mMediaProgressPanel->setVisible(false);
			}
		}
		
		if(media_impl)
		{
			//
			// Handle Scrolling
			//
			switch (mScrollState) 
			{
				case SCROLL_UP:
					media_impl->scrollWheel(0, -1, MASK_NONE);
					break;
				case SCROLL_DOWN:
					media_impl->scrollWheel(0, 1, MASK_NONE);
					break;
				case SCROLL_LEFT:
					media_impl->scrollWheel(1, 0, MASK_NONE);
					//				media_impl->handleKeyHere(KEY_LEFT, MASK_NONE);
					break;
				case SCROLL_RIGHT:
					media_impl->scrollWheel(-1, 0, MASK_NONE);
					//				media_impl->handleKeyHere(KEY_RIGHT, MASK_NONE);
					break;
				case SCROLL_NONE:
		default:
					break;
			}
		}
		
		setVisible(enabled);
		
		//
		// Calculate position and shape of the controls
		//
		std::vector<LLVector3>::iterator vert_it;
		std::vector<LLVector3>::iterator vert_end;
		std::vector<LLVector3> vect_face;
		
		LLVolume* volume = objectp->getVolume();
		
		if (volume)
		{
			const LLVolumeFace& vf = volume->getVolumeFace(mTargetObjectFace);
			
			LLVector3 ext[2];
			ext[0].set(vf.mExtents[0].getF32ptr());
			ext[1].set(vf.mExtents[1].getF32ptr());
			
			LLVector3 center = (ext[0]+ext[1])*0.5f;
			LLVector3 size = (ext[1]-ext[0])*0.5f;
			LLVector3 vert[] =
			{
				center + size.scaledVec(LLVector3(1,1,1)),
				center + size.scaledVec(LLVector3(-1,1,1)),
				center + size.scaledVec(LLVector3(1,-1,1)),
				center + size.scaledVec(LLVector3(-1,-1,1)),
				center + size.scaledVec(LLVector3(1,1,-1)),
				center + size.scaledVec(LLVector3(-1,1,-1)),
				center + size.scaledVec(LLVector3(1,-1,-1)),
				center + size.scaledVec(LLVector3(-1,-1,-1)),
			};

			LLVOVolume* vo = (LLVOVolume*) objectp;

			for (U32 i = 0; i < 8; i++)
			{
				vect_face.push_back(vo->volumePositionToAgent(vert[i]));	
			}
		}
		vert_it = vect_face.begin();
		vert_end = vect_face.end();
		
		LLMatrix4a mat;
		if (!is_hud) 
		{
			mat.setMul(glh_get_current_projection(),glh_get_current_modelview());
		}
		else {
			LLMatrix4a proj, modelview;
			if (get_hud_matrices(proj, modelview))
			{
				//mat = proj * modelview;
				mat.setMul(proj,modelview);
			}
		}
		LLVector4a min;
		min.splat(1.f);
		LLVector4a max;
		max.splat(-1.f);
		for(; vert_it != vert_end; ++vert_it)
		{
			// project silhouette vertices into screen space
			LLVector4a screen_vert;
			screen_vert.load3(vert_it->mV,1.f);

			mat.perspectiveTransform(screen_vert,screen_vert);

			// add to screenspace bounding box
			min.setMin(screen_vert,min);
			max.setMax(screen_vert,max);
		}
		
		// convert screenspace bbox to pixels (in screen coords)
		LLRect window_rect = gViewerWindow->getWorldViewRectScaled();
		LLCoordGL screen_min;
		screen_min.mX = ll_round((F32)window_rect.mLeft + (F32)window_rect.getWidth() * (min.getF32ptr()[VX] + 1.f) * 0.5f);
		screen_min.mY = ll_round((F32)window_rect.mBottom + (F32)window_rect.getHeight() * (min.getF32ptr()[VY] + 1.f) * 0.5f);
		
		LLCoordGL screen_max;
		screen_max.mX = ll_round((F32)window_rect.mLeft + (F32)window_rect.getWidth() * (max.getF32ptr()[VX] + 1.f) * 0.5f);
		screen_max.mY = ll_round((F32)window_rect.mBottom + (F32)window_rect.getHeight() * (max.getF32ptr()[VY] + 1.f) * 0.5f);
		
		// grow panel so that screenspace bounding box fits inside "media_region" element of panel
		LLRect media_panel_rect;
		// Get the height of the controls (less the volume slider)
		S32 controls_height = mMediaControlsStack->getRect().getHeight() - mVolumeSliderCtrl->getRect().getHeight();
		getParent()->screenRectToLocal(LLRect(screen_min.mX, screen_max.mY, screen_max.mX, screen_min.mY), &media_panel_rect);
		media_panel_rect.mTop += controls_height;
		
		// keep all parts of panel on-screen
		// Area of the top of the world view to avoid putting the controls
		window_rect.mTop -= mTopWorldViewAvoidZone;
		// Don't include "spacing" bookends on left & right of the media controls
		window_rect.mLeft -= mLeftBookend->getRect().getWidth();
		window_rect.mRight += mRightBookend->getRect().getWidth();
		// Don't include the volume slider
		window_rect.mBottom -= mVolumeSliderCtrl->getRect().getHeight();
		media_panel_rect.intersectWith(window_rect);
		
		// clamp to minimum size, keeping rect inside window
		S32 centerX = media_panel_rect.getCenterX();
		S32 centerY = media_panel_rect.getCenterY();
		// Shrink screen rect by min width and height, to ensure containment
		window_rect.stretch(-mMinWidth/2, -mMinHeight/2);
		window_rect.clampPointToRect(centerX, centerY);
		media_panel_rect.setCenterAndSize(centerX, centerY, 
										  llmax(mMinWidth, media_panel_rect.getWidth()),
										  llmax(mMinHeight, media_panel_rect.getHeight()));
		
		// Finally set the size of the panel
		setShape(media_panel_rect, true);
		
		// Test mouse position to see if the cursor is stationary
		LLCoordWindow cursor_pos_window;
		getWindow()->getCursorPosition(&cursor_pos_window);
		
		// If last pos is not equal to current pos, the mouse has moved
		// We need to reset the timer, and make sure the panel is visible
		if(cursor_pos_window.mX != mLastCursorPos.mX ||
		   cursor_pos_window.mY != mLastCursorPos.mY ||
		   mScrollState != SCROLL_NONE)
		{
			mInactivityTimer.start();
			mLastCursorPos = cursor_pos_window;
		}
		
		if(isMouseOver() || hasFocus())
		{
			// Never fade the controls if the mouse is over them or they have keyboard focus.
			mFadeTimer.stop();
		}
		else if(!mClearFaceOnFade && (mInactivityTimer.getElapsedTimeF32() < mInactiveTimeout))
		{
			// Mouse is over the object, but has not been stationary for long enough to fade the UI
			mFadeTimer.stop();
		}
		else if(! mFadeTimer.getStarted() )
		{
			// we need to start fading the UI (and we have not already started)
			mFadeTimer.reset();
			mFadeTimer.start();
		}
		else
		{
			// I don't think this is correct anymore.  This is done in draw() after the fade has completed.
			//			setVisible(FALSE);
		}
	}
}
예제 #6
0
// Shrink the model to fit
// on a 1x1x1 cube centered at the origin.
// The positions and extents
// multiplied by  mNormalizedScale
// and offset by mNormalizedTranslation
// to be the "original" extents and position.
// Also, the positions will fit
// within the unit cube.
void LLModel::normalizeVolumeFaces()
{

	// ensure we don't have too many faces
	if (mVolumeFaces.size() > LL_SCULPT_MESH_MAX_FACES)
		mVolumeFaces.resize(LL_SCULPT_MESH_MAX_FACES);
	
	if (!mVolumeFaces.empty())
	{
		LLVector4a min, max;
		
		// For all of the volume faces
		// in the model, loop over
		// them and see what the extents
		// of the volume along each axis.
		min = mVolumeFaces[0].mExtents[0];
		max = mVolumeFaces[0].mExtents[1];

		for (U32 i = 1; i < mVolumeFaces.size(); ++i)
		{
			LLVolumeFace& face = mVolumeFaces[i];

			update_min_max(min, max, face.mExtents[0]);
			update_min_max(min, max, face.mExtents[1]);

			if (face.mTexCoords)
			{
				LLVector2& min_tc = face.mTexCoordExtents[0];
				LLVector2& max_tc = face.mTexCoordExtents[1];

				min_tc = face.mTexCoords[0];
				max_tc = face.mTexCoords[0];

				for (U32 j = 1; j < (U32)face.mNumVertices; ++j)
				{
					update_min_max(min_tc, max_tc, face.mTexCoords[j]);
				}
			}
			else
			{
				face.mTexCoordExtents[0].set(0,0);
				face.mTexCoordExtents[1].set(1,1);
			}
		}

		// Now that we have the extents of the model
		// we can compute the offset needed to center
		// the model at the origin.

		// Compute center of the model
		// and make it negative to get translation
		// needed to center at origin.
		LLVector4a trans;
		trans.setAdd(min, max);
		trans.mul(-0.5f);

		// Compute the total size along all
		// axes of the model.
		LLVector4a size;
		size.setSub(max, min);

		// Prevent division by zero.
		F32 x = size[0];
		F32 y = size[1];
		F32 z = size[2];
		F32 w = size[3];
		if (fabs(x)<F_APPROXIMATELY_ZERO)
		{
			x = 1.0;
		}
		if (fabs(y)<F_APPROXIMATELY_ZERO)
		{
			y = 1.0;
		}
		if (fabs(z)<F_APPROXIMATELY_ZERO)
		{
			z = 1.0;
		}
		size.set(x,y,z,w);

		// Compute scale as reciprocal of size
		LLVector4a scale;
		scale.splat(1.f);
		scale.div(size);

		LLVector4a inv_scale(1.f);
		inv_scale.div(scale);

		for (U32 i = 0; i < mVolumeFaces.size(); ++i)
		{
			LLVolumeFace& face = mVolumeFaces[i];

			// We shrink the extents so
			// that they fall within
			// the unit cube.
			face.mExtents[0].add(trans);
			face.mExtents[0].mul(scale);

			face.mExtents[1].add(trans);
			face.mExtents[1].mul(scale);

			// For all the positions, we scale
			// the positions to fit within the unit cube.
			LLVector4a* pos = (LLVector4a*) face.mPositions;
			LLVector4a* norm = (LLVector4a*) face.mNormals;

			for (U32 j = 0; j < (U32)face.mNumVertices; ++j)
			{
			 	pos[j].add(trans);
				pos[j].mul(scale);
				if (norm && !norm[j].equals3(LLVector4a::getZero()))
				{
					norm[j].mul(inv_scale);
					norm[j].normalize3();
				}
			}
		}

		// mNormalizedScale is the scale at which
		// we would need to multiply the model
		// by to get the original size of the
		// model instead of the normalized size.
		LLVector4a normalized_scale;
		normalized_scale.splat(1.f);
		normalized_scale.div(scale);
		mNormalizedScale.set(normalized_scale.getF32ptr());
		mNormalizedTranslation.set(trans.getF32ptr());
		mNormalizedTranslation *= -1.f; 
	}
}
void LLSurfacePatch::updateVisibility()
{
	if (mVObjp.isNull())
	{
		return;
	}

	const F32 DEFAULT_DELTA_ANGLE 	= (0.15f);
	U32 old_render_stride, max_render_stride;
	U32 new_render_level;
	F32 stride_per_distance = DEFAULT_DELTA_ANGLE / mSurfacep->getMetersPerGrid();
	U32 grids_per_patch_edge = mSurfacep->getGridsPerPatchEdge();

	LLVector4a center;
	center.load3( (mCenterRegion + mSurfacep->getOriginAgent()).mV);
	LLVector4a radius;
	radius.splat(mRadius);

	// sphere in frustum on global coordinates
	if (LLViewerCamera::getInstance()->AABBInFrustumNoFarClip(center, radius))
	{
		// We now need to calculate the render stride based on patchp's distance 
		// from LLCamera render_stride is governed by a relation something like this...
		//
		//                       delta_angle * patch.distance
		// render_stride <=  ----------------------------------------
		//                           mMetersPerGrid
		//
		// where 'delta_angle' is the desired solid angle of the average polgon on a patch.
		//
		// Any render_stride smaller than the RHS would be 'satisfactory'.  Smaller 
		// strides give more resolution, but efficiency suggests that we use the largest 
		// of the render_strides that obey the relation.  Flexibility is achieved by 
		// modulating 'delta_angle' until we have an acceptable number of triangles.
	
		old_render_stride = mVisInfo.mRenderStride;

		// Calculate the render_stride using information in agent
		max_render_stride = lltrunc(mVisInfo.mDistance * stride_per_distance);
		max_render_stride = llmin(max_render_stride , 2*grids_per_patch_edge);

		// We only use render_strides that are powers of two, so we use look-up tables to figure out
		// the render_level and corresponding render_stride
		new_render_level = mVisInfo.mRenderLevel = mSurfacep->getRenderLevel(max_render_stride);
		mVisInfo.mRenderStride = mSurfacep->getRenderStride(new_render_level);

		if ((mVisInfo.mRenderStride != old_render_stride)) 
			// The reason we check !mbIsVisible is because non-visible patches normals 
			// are not updated when their data is changed.  When this changes we can get 
			// rid of mbIsVisible altogether.
		{
			if (mVObjp)
			{
				mVObjp->dirtyGeom();
				if (getNeighborPatch(WEST))
				{
					getNeighborPatch(WEST)->mVObjp->dirtyGeom();
				}
				if (getNeighborPatch(SOUTH))
				{
					getNeighborPatch(SOUTH)->mVObjp->dirtyGeom();
				}
			}
		}
		mVisInfo.mbIsVisible = TRUE;
	}
	else
	{
		mVisInfo.mbIsVisible = FALSE;
	}
}