4 files changed, 65 insertions, 3 deletions

diff --git a/indra/llmath/llbbox.cpp b/indra/llmath/llbbox.cpp
index b46a6e03d2..3e2c05a6e6 100644
--- a/indra/llmath/llbbox.cpp
+++ b/indra/llmath/llbbox.cpp
@@ -89,6 +89,19 @@ void LLBBox::addBBoxAgent(const LLBBox& b)
 	}
 }
 
+LLBBox LLBBox::getAxisAligned() const
+{
+	// no rotation = axis aligned rotation
+	LLBBox aligned(mPosAgent, LLQuaternion(), LLVector3(), LLVector3());
+
+	// add the center point so that it's not empty
+	aligned.addPointAgent(mPosAgent);
+
+	// add our BBox
+	aligned.addBBoxAgent(*this);
+
+	return aligned;
+}
 
 void LLBBox::expand( F32 delta )
 {
@@ -147,6 +160,15 @@ BOOL LLBBox::containsPointAgent(const LLVector3& p) const
 	return containsPointLocal(point_local);
 }
 
+LLVector3 LLBBox::getMinAgent() const
+{
+	return localToAgent(mMinLocal);
+}
+
+LLVector3 LLBBox::getMaxAgent() const
+{
+	return localToAgent(mMaxLocal);
+}
 
 /*
 LLBBox operator*(const LLBBox &a, const LLMatrix4 &b)
diff --git a/indra/llmath/llbbox.h b/indra/llmath/llbbox.h
index 5b911793f0..28e69b75e1 100644
--- a/indra/llmath/llbbox.h
+++ b/indra/llmath/llbbox.h
@@ -51,9 +51,11 @@ public:
 	const LLVector3&	getPositionAgent() const			{ return mPosAgent; }
 	const LLQuaternion&	getRotation() const					{ return mRotation; }
 
+	LLVector3           getMinAgent() const;
 	const LLVector3&	getMinLocal() const					{ return mMinLocal; }
 	void				setMinLocal( const LLVector3& min )	{ mMinLocal = min; }
 
+	LLVector3           getMaxAgent() const;
 	const LLVector3&	getMaxLocal() const					{ return mMaxLocal; }
 	void				setMaxLocal( const LLVector3& max )	{ mMaxLocal = max; }
 
@@ -80,6 +82,8 @@ public:
 	LLVector3			localToAgentBasis(const LLVector3& v) const;
 	LLVector3			agentToLocalBasis(const LLVector3& v) const;
 
+	// Get the smallest possible axis aligned bbox that contains this bbox
+	LLBBox              getAxisAligned() const;
 
 //	friend LLBBox operator*(const LLBBox& a, const LLMatrix4& b);
 
diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp
index 14e1ca8d43..71b92962fb 100644
--- a/indra/llmath/llvolume.cpp
+++ b/indra/llmath/llvolume.cpp
@@ -4406,19 +4406,54 @@ std::ostream& operator<<(std::ostream &s, const LLVolume *volumep)
 
 BOOL LLVolumeFace::create(LLVolume* volume, BOOL partial_build)
 {
+	BOOL ret = FALSE ;
 	if (mTypeMask & CAP_MASK)
 	{
-		return createCap(volume, partial_build);
+		ret = createCap(volume, partial_build);
 	}
 	else if ((mTypeMask & END_MASK) || (mTypeMask & SIDE_MASK))
 	{
-		return createSide(volume, partial_build);
+		ret = createSide(volume, partial_build);
 	}
 	else
 	{
 		llerrs << "Unknown/uninitialized face type!" << llendl;
-		return FALSE;
 	}
+
+	//update the range of the texture coordinates
+	if(ret)
+	{
+		mTexCoordExtents[0].setVec(1.f, 1.f) ;
+		mTexCoordExtents[1].setVec(0.f, 0.f) ;
+
+		U32 end = mVertices.size() ;
+		for(U32 i = 0 ; i < end ; i++)
+		{
+			if(mTexCoordExtents[0].mV[0] > mVertices[i].mTexCoord.mV[0])
+			{
+				mTexCoordExtents[0].mV[0] = mVertices[i].mTexCoord.mV[0] ;
+			}
+			if(mTexCoordExtents[1].mV[0] < mVertices[i].mTexCoord.mV[0])
+			{
+				mTexCoordExtents[1].mV[0] = mVertices[i].mTexCoord.mV[0] ;
+			}
+
+			if(mTexCoordExtents[0].mV[1] > mVertices[i].mTexCoord.mV[1])
+			{
+				mTexCoordExtents[0].mV[1] = mVertices[i].mTexCoord.mV[1] ;
+			}
+			if(mTexCoordExtents[1].mV[1] < mVertices[i].mTexCoord.mV[1])
+			{
+				mTexCoordExtents[1].mV[1] = mVertices[i].mTexCoord.mV[1] ;
+			}			
+		}
+		mTexCoordExtents[0].mV[0] = llmax(0.f, mTexCoordExtents[0].mV[0]) ;
+		mTexCoordExtents[0].mV[1] = llmax(0.f, mTexCoordExtents[0].mV[1]) ;
+		mTexCoordExtents[1].mV[0] = llmin(1.f, mTexCoordExtents[1].mV[0]) ;
+		mTexCoordExtents[1].mV[1] = llmin(1.f, mTexCoordExtents[1].mV[1]) ;
+	}
+
+	return ret ;
 }
 
 void	LerpPlanarVertex(LLVolumeFace::VertexData& v0,
diff --git a/indra/llmath/llvolume.h b/indra/llmath/llvolume.h
index d48a79ee46..28b9895ff3 100644
--- a/indra/llmath/llvolume.h
+++ b/indra/llmath/llvolume.h
@@ -831,6 +831,7 @@ public:
 	S32 mNumT;
 
 	LLVector3 mExtents[2]; //minimum and maximum point of face
+	LLVector2 mTexCoordExtents[2]; //minimum and maximum of texture coordinates of the face.
 
 	std::vector<VertexData> mVertices;
 	std::vector<U16>	mIndices;