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+<h1>Introduction to MESH module python interface</h1>\r
+\r
+<p><a href="smeshpy_doc/namespacesmesh.html">Package smesh</a> provides a standard API for meshes creation and edition.\r
+<p>Below you can see an example of package <b>smesh</b> usage for 3d mesh generation.\r
+<p> \r
+<h3><a name=bookmark>Example of 3d mesh generation with NETGEN</a></h3>\r
+\r
+<br>from geompy import *\r
+<br>\r
+<br>import smesh\r
+<br>\r
+<br># Geometry\r
+<br># ========\r
+<br>\r
+<br># an assembly of a box, a cylinder and a truncated cone meshed with tetrahedral.\r
+<br>\r
+<br># Define values\r
+<br># -------------\r
+<br>\r
+<br>name = "ex21_lamp"\r
+<br>\r
+<br>cote = 60\r
+<br>\r
+<br>section = 20\r
+<br>size = 200\r
+<br>\r
+<br>radius_1 = 80\r
+<br>radius_2 = 40\r
+<br>height = 100\r
+<br>\r
+<br># Build a box\r
+<br># -----------\r
+<br>\r
+<br>box = MakeBox(-cote, -cote, -cote, +cote, +cote, +cote)\r
+<br>\r
+<br># Build a cylinder\r
+<br># ----------------\r
+<br>\r
+<br>pt1 = MakeVertex(0, 0, cote/3)\r
+<br>di1 = MakeVectorDXDYDZ(0, 0, 1)\r
+<br>cyl = MakeCylinder(pt1, di1, section, size)\r
+<br>\r
+<br># Build a truncated cone\r
+<br># ----------------------\r
+<br>\r
+<br>pt2 = MakeVertex(0, 0, size)\r
+<br>cone = MakeCone(pt2, di1, radius_1, radius_2, height)\r
+<br>\r
+<br># Fuse\r
+<br># ----\r
+<br>\r
+<br>box_cyl = MakeFuse(box, cyl)\r
+<br>piece = MakeFuse(box_cyl, cone)\r
+<br>\r
+<br># Add in study\r
+<br># ------------\r
+<br>\r
+<br>addToStudy(piece, name)\r
+<br>\r
+<br># Create a group of faces\r
+<br># -----------------------\r
+<br>\r
+<br>group = CreateGroup(piece, ShapeType["FACE"])\r
+<br>\r
+<br>group_name = name + "_grp"\r
+<br>addToStudy(group, group_name)\r
+<br>group.SetName(group_name)\r
+<br>\r
+<br># Add faces in the group\r
+<br># ----------------------\r
+<br>\r
+<br>faces = SubShapeAllIDs(piece, ShapeType["FACE"])\r
+<br>\r
+<br>UnionIDs(group, faces)\r
+<br>\r
+<br># Create a mesh\r
+<br># =============\r
+<br>\r
+<br># Define a mesh on a geometry\r
+<br># ---------------------------\r
+<br>\r
+<br>tetra = smesh.Mesh(piece, name)\r
+<br>\r
+<br># Define 1D hypothesis\r
+<br># --------------------\r
+<br>\r
+<br>algo1d = tetra.Segment()\r
+<br>algo1d.LocalLength(10)\r
+<br>\r
+<br># Define 2D hypothesis\r
+<br># --------------------\r
+<br>\r
+<br>algo2d = tetra.Triangle()\r
+<br>algo2d.LengthFromEdges()\r
+<br>\r
+<br># Define 3D hypothesis\r
+<br># --------------------\r
+<br>\r
+<br>algo3d = tetra.Tetrahedron(smesh.NETGEN)\r
+<br>algo3d.MaxElementVolume(100)\r
+<br>\r
+<br># Compute the mesh\r
+<br># ----------------\r
+<br>\r
+<br>tetra.Compute()\r
+<br>\r
+<br># Create a groupe of faces\r
+<br># ------------------------\r
+<br>\r
+<br>tetra.Group(group)\r
+\r
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