1 files changed, 31 insertions, 0 deletions
diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp
index 7fd9b57f51..7c98536e72 100644
--- a/indra/llmath/llvolume.cpp
+++ b/indra/llmath/llvolume.cpp
@@ -5615,6 +5615,37 @@ void LLVolumeFace::createBinormals()
 	}
 }
 
+void LLVolumeFace::appendFace(const LLVolumeFace& face, LLMatrix4& mat, LLMatrix4& norm_mat)
+{
+	U16 offset = mVertices.size();
+
+	
+	for (U32 i = 0; i < face.mVertices.size(); ++i)
+	{
+		VertexData v = face.mVertices[i];
+		v.mPosition = v.mPosition*mat;
+		v.mNormal = v.mNormal * norm_mat;
+
+
+		mVertices.push_back(v);
+
+		if (offset == 0 && i == 0)
+		{
+			mExtents[0] = mExtents[1] = v.mPosition;
+		}
+		else
+		{
+			update_min_max(mExtents[0], mExtents[1], v.mPosition);
+		}
+	}
+
+	
+	for (U32 i = 0; i < face.mIndices.size(); ++i)
+	{
+		mIndices.push_back(face.mIndices[i]+offset);
+	}
+}
+
 BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
 {
 	LLMemType m1(LLMemType::MTYPE_VOLUME);