Steve Streeting avatar Steve Streeting committed 1867d2c

Slight optimisation to BillboardSet - use Matrix3 instead of Quaternion to orient, uses less instructions.

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             // TODO: Cache axis when billboard type is BBT_POINT or BBT_PERPENDICULAR_COMMON
             Vector3 axis = (offsets[3] - offsets[0]).crossProduct(offsets[2] - offsets[1]).normalisedCopy();
-            Quaternion rotation(bb.mRotation, axis);
+            Matrix3 rotation;
+			rotation.FromAxisAngle(axis, bb.mRotation);
             Vector3 pt;
             // Left-top
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