:tocdepth: 3 .. _annexe: ======================================================= Appendix: naming rule to find elements in an hexahedron ======================================================= Definition of an hexahedron =========================== .. image:: _static/hexahedron.png :align: center Naming rule for the faces of an hexahedron | A: plane Z = 0 | B: plane Z = 1 | C: plane Y = 0 | D: plane Y = 1 | E: plane X = 0 | F: plane X = 1 Quadrangles in an hexahedron '''''''''''''''''''''''''''''' Naming rule for the 6 quadrangles in an hexahedron | Q_A or 0: plane Z=0 | Q_B or 1: plane Z=1 | Q_C or 2: plane Y=0 | Q_D or 3: plane Y=1 | Q_E or 4: plane X=0 | Q_F or 5: plane X=1 Edges in an hexahedron '''''''''''''''''''''''' Naming rule for the 12 edges in an hexahedron | E_AC or 0: planes Z=0 and Y=0 | E_AD or 1: planes Z=0 and Y=1 | E_BC or 2: planes Z=1 and Y=0 | E_BD or 3: planes Z=1 and Y=1 | E_AE or 4: planes Z=0 and X=0 | E_AF or 5: planes Z=0 and X=1 | E_BE or 6: planes Z=1 and X=0 | E_BF or 7: planes Z=1 and X=1 | E_CE or 8: planes Y=0 and X=0 | E_CF or 9: planes Y=0 and X=1 | E_DE or 10: planes Y=1 and X=0 | E_DF or 11: planes Y=1 and X=1 Vertices in an hexahedron '''''''''''''''''''''''''''' Naming rule for the 8 vertices in an hexahedron | V_ACE or 0: planes Z=0 and Y=0 and X=0 | V_ACF or 1: planes Z=0 and Y=0 and X=1 | V_ADE or 2: planes Z=0 and Y=1 and X=0 | V_ADF or 3: planes Z=0 and Y=1 and X=1 | V_BCE or 4: planes Z=1 and Y=0 and X=0 | V_BCF or 5: planes Z=1 and Y=0 and X=1 | V_BDE or 6: planes Z=1 and Y=1 and X=0 | V_BDF or 7: planes Z=1 and Y=1 and X=1