:tocdepth: 3 .. _cad: ============================================= Import or build a geometry without constraint ============================================= A main feature of HEXABLOCK is to define a geometry without constraint for hexahedral meshing. The user has two ways to define the geometry for meshing: - import a geometry from a STEP, IGES or BREP file, - build a geometry with GEOM component. The following pictures show different geometries for exemples: .. image:: _static/cad_bielle.png :align: center .. centered:: Connecting rod (see :ref:`intropython`) .. image:: _static/bride.png :align: center .. centered:: Bridle .. image:: _static/intersec_cyl.png :align: center .. centered:: Intersection of cylinders .. image:: _static/tuyau_courbe.png :align: center .. centered:: Bent (curved) pipe