-# 3d mesh generation
+# 3d mesh generation and mesh exploration
-from geompy import *
-import smesh
+import salome
+salome.salome_init()
+from salome.geom import geomBuilder
+geompy = geomBuilder.New(salome.myStudy)
+
+import SMESH
+from salome.smesh import smeshBuilder
+smesh = smeshBuilder.New(salome.myStudy)
###
# Geometry: an assembly of a box, a cylinder and a truncated cone
-# meshed with tetrahedral
+# to be meshed with tetrahedra
###
# Define values
height = 100
# Build a box
-box = MakeBox(-cote, -cote, -cote, +cote, +cote, +cote)
+box = geompy.MakeBox(-cote, -cote, -cote, +cote, +cote, +cote)
# Build a cylinder
-pt1 = MakeVertex(0, 0, cote/3)
-di1 = MakeVectorDXDYDZ(0, 0, 1)
-cyl = MakeCylinder(pt1, di1, section, size)
+pt1 = geompy.MakeVertex(0, 0, cote/3)
+di1 = geompy.MakeVectorDXDYDZ(0, 0, 1)
+cyl = geompy.MakeCylinder(pt1, di1, section, size)
# Build a truncated cone
-pt2 = MakeVertex(0, 0, size)
-cone = MakeCone(pt2, di1, radius_1, radius_2, height)
+pt2 = geompy.MakeVertex(0, 0, size)
+cone = geompy.MakeCone(pt2, di1, radius_1, radius_2, height)
# Fuse
-box_cyl = MakeFuse(box, cyl)
-piece = MakeFuse(box_cyl, cone)
+box_cyl = geompy.MakeFuse(box, cyl)
+piece = geompy.MakeFuse(box_cyl, cone)
# Add to the study
-addToStudy(piece, name)
+geompy.addToStudy(piece, name)
# Create a group of faces
-group = CreateGroup(piece, ShapeType["FACE"])
+faces_group = geompy.CreateGroup(piece, geompy.ShapeType["FACE"])
group_name = name + "_grp"
-addToStudy(group, group_name)
-group.SetName(group_name)
+geompy.addToStudy(faces_group, group_name)
+faces_group.SetName(group_name)
# Add faces to the group
-faces = SubShapeAllIDs(piece, ShapeType["FACE"])
-UnionIDs(group, faces)
+faces = geompy.SubShapeAllIDs(piece, geompy.ShapeType["FACE"])
+geompy.UnionIDs(faces_group, faces)
###
# Create a mesh
# Define a mesh on a geometry
tetra = smesh.Mesh(piece, name)
-# Define 1D hypothesis
+# Define 1D algorithm and hypothesis
algo1d = tetra.Segment()
algo1d.LocalLength(10)
-# Define 2D hypothesis
+# Define 2D algorithm and hypothesis
algo2d = tetra.Triangle()
algo2d.LengthFromEdges()
-# Define 3D hypothesis
+# Define 3D algorithm and hypothesis
algo3d = tetra.Tetrahedron()
algo3d.MaxElementVolume(100)
# Compute the mesh
tetra.Compute()
-# Create a groupe of faces
-tetra.Group(group)
+# Create a mesh group of all triangles generated on geom faces present in faces_group
+group = tetra.Group(faces_group)
+
+###
+# Explore the mesh
+###
+
+# Retrieve coordinates of nodes
+coordStr = ""
+for node in tetra.GetNodesId():
+ x,y,z = tetra.GetNodeXYZ( node )
+ coordStr += "%s (%s, %s, %s) " % ( node, x,y,z )
+ pass
+
+# Retrieve nodal connectivity of triangles
+triaStr = ""
+for tria in tetra.GetElementsByType( SMESH.FACE ):
+ nodes = tetra.GetElemNodes( tria )
+ triaStr += "%s (%s, %s, %s) " % ( tria, nodes[0], nodes[1], nodes[2] )
