+ /*!
+ * Method of computing translation of a node at Viscous Layers construction
+ */
+ enum VLExtrusionMethod {
+ // node is translated along normal to a surface with possible further smoothing
+ SURF_OFFSET_SMOOTH,
+ // node is translated along the average normal of surrounding faces till
+ // intersection with a neighbor face translated along its own normal
+ // by the layers thickness
+ FACE_OFFSET,
+ // node is translated along the average normal of surrounding faces
+ // by the layers thickness
+ NODE_OFFSET
+ };
+