1 files changed, 92 insertions, 4 deletions

diff --git a/indra/newview/llviewerobject.cpp b/indra/newview/llviewerobject.cpp
index be9ff872c0..c3a7d345f5 100644
--- a/indra/newview/llviewerobject.cpp
+++ b/indra/newview/llviewerobject.cpp
@@ -519,7 +519,6 @@ void LLViewerObject::setNameValueList(const std::string& name_value_list)
 	}
 }
 
-
 // This method returns true if the object is over land owned by the
 // agent.
 bool LLViewerObject::isReturnable()
@@ -528,17 +527,106 @@ bool LLViewerObject::isReturnable()
 	{
 		return false;
 	}
+		
 	std::vector<LLBBox> boxes;
 	boxes.push_back(LLBBox(getPositionRegion(), getRotationRegion(), getScale() * -0.5f, getScale() * 0.5f).getAxisAligned());
 	for (child_list_t::iterator iter = mChildList.begin();
 		 iter != mChildList.end(); iter++)
 	{
 		LLViewerObject* child = *iter;
-		boxes.push_back(LLBBox(child->getPositionRegion(), child->getRotationRegion(), child->getScale() * -0.5f, child->getScale() * 0.5f).getAxisAligned());
+		boxes.push_back( LLBBox(child->getPositionRegion(), child->getRotationRegion(), child->getScale() * -0.5f, child->getScale() * 0.5f).getAxisAligned());
+	}
+
+	bool result = (mRegionp && mRegionp->objectIsReturnable(getPositionRegion(), boxes)) ? 1 : 0;
+	
+	if ( !result )
+	{		
+		//Get list of neighboring regions relative to this vo's region
+		std::vector<LLViewerRegion*> uniqueRegions;
+		mRegionp->getNeighboringRegions( uniqueRegions );
+	
+		//Build aabb's - for root and all children
+		std::vector<PotentialReturnableObject> returnables;
+		typedef std::vector<LLViewerRegion*>::iterator RegionIt;
+		RegionIt regionStart = uniqueRegions.begin();
+		RegionIt regionEnd   = uniqueRegions.end();
+		
+		for (; regionStart != regionEnd; ++regionStart )
+		{
+			LLViewerRegion* pTargetRegion = *regionStart;
+			//Add the root vo as there may be no children and we still want
+			//to test for any edge overlap
+			buildReturnablesForChildrenVO( returnables, this, pTargetRegion );
+			//Add it's children
+			for (child_list_t::iterator iter = mChildList.begin();  iter != mChildList.end(); iter++)
+			{
+				LLViewerObject* pChild = *iter;		
+				buildReturnablesForChildrenVO( returnables, pChild, pTargetRegion );
+			}
+		}	
+	
+		//TBD#Eventually create a region -> box list map 
+		typedef std::vector<PotentialReturnableObject>::iterator ReturnablesIt;
+		ReturnablesIt retCurrentIt = returnables.begin();
+		ReturnablesIt retEndIt = returnables.end();
+	
+		for ( ; retCurrentIt !=retEndIt; ++retCurrentIt )
+		{
+			boxes.clear();
+			LLViewerRegion* pRegion = (*retCurrentIt).pRegion;
+			boxes.push_back( (*retCurrentIt).box );	
+			bool retResult = (pRegion && pRegion->childrenObjectReturnable( boxes )) ? 1 : 0;
+			if ( retResult )
+			{ 
+				result = true;
+				break;
+			}
+		}
+	}
+	return result;
+}
+
+void LLViewerObject::buildReturnablesForChildrenVO( std::vector<PotentialReturnableObject>& returnables, LLViewerObject* pChild, LLViewerRegion* pTargetRegion )
+{
+	if ( !pChild )
+	{
+		llerrs<<"child viewerobject is NULL "<<llendl;
+	}
+	
+	constructAndAddReturnable( returnables, pChild, pTargetRegion );
+	
+	//We want to handle any children VO's as well
+	for (child_list_t::iterator iter = pChild->mChildList.begin();  iter != pChild->mChildList.end(); iter++)
+	{
+		LLViewerObject* pChildofChild = *iter;
+		buildReturnablesForChildrenVO( returnables, pChildofChild, pTargetRegion );
 	}
+}
 
-	return mRegionp
-		&& mRegionp->objectIsReturnable(getPositionRegion(), boxes);
+void LLViewerObject::constructAndAddReturnable( std::vector<PotentialReturnableObject>& returnables, LLViewerObject* pChild, LLViewerRegion* pTargetRegion )
+{
+	
+	LLVector3 targetRegionPos;
+	targetRegionPos.setVec( pChild->getPositionGlobal() );	
+	
+	LLBBox childBBox = LLBBox( targetRegionPos, pChild->getRotationRegion(), pChild->getScale() * -0.5f, 
+							    pChild->getScale() * 0.5f).getAxisAligned();
+	
+	LLVector3 edgeA = targetRegionPos + childBBox.getMinLocal();
+	LLVector3 edgeB = targetRegionPos + childBBox.getMaxLocal();
+	
+	LLVector3d edgeAd, edgeBd;
+	edgeAd.setVec(edgeA);
+	edgeBd.setVec(edgeB);
+	
+	//Only add the box when either of the extents are in a neighboring region
+	if ( pTargetRegion->pointInRegionGlobal( edgeAd ) || pTargetRegion->pointInRegionGlobal( edgeBd ) )
+	{
+		PotentialReturnableObject returnableObj;
+		returnableObj.box		= childBBox;
+		returnableObj.pRegion	= pTargetRegion;
+		returnables.push_back( returnableObj );
+	}
 }
 
 BOOL LLViewerObject::setParent(LLViewerObject* parent)