message: ENH: add BVH::getScaleFactor() method
diff: @@ -186,6 +186,13 @@ public:
  void setScaleFactor( FloatType scale_factor )
  { m_scaleFactor = scale_factor; };
  + /*!
  + * \brief Returns the scale factor used when constructing the BVH.
  + * \return scale_factor the scale factor
  + */
  + FloatType getScaleFacor( ) const
  + { return m_scaleFactor; };
  +
  /*!
  * \brief Generates the BVH
  * \return status set to BVH_BUILD_OK on success.
  