Associate the model of blocks to the geometry
Elements association
Associate to a vertex of the geometry:
vx.setAssociation(geom_object_vertex)
Get the association:
gov = vx.getAssociation()
Associate to an edge or a wire of the geometry:
l = edg.addAssociation(geom_object_1D, debut, val)
Get the associations:
edge_associations = edg.getAssociations()
Associate to a face or a shell of the geometry:
l = quad.addAssociation(geom_object_2D)
Give the association:
go2d = quad.getAssociations()
Associate by lines
To associate an opened line to the geometry, the following data have to be mentioned:
the starting edge of the model of blocks: mstart
the list of edges of the model of blocks: mline
the starting edge of the geometry: gstart
the curvilinear abscissa on the starting edge of the geometry: pstart (double)
the list of edges of the geometry: gline
the curvilinear abscissa on the last edge of the geometry: pend
The number of edges of the model of blocks to associate may be different from the number of edges of the geometry.
Associate an opened line:
l = doc.associateOpenedLine(mstart, mline, gstart, pstart, gline, pend)
To associate a closed line to the geometry, the following data have to be mentioned:
the starting vertex of the model of blocks: mfirst
the starting edge of the model of blocks: mstart
the list of edges of the model of blocks: mline
the starting edge of the geometry: gstart
the curvilinear abscissa on the starting edge of the geometry: pstart (double)
the list of edges of the geometry: gline
The number of edges of the model of blocks to associate may be different from the number of edges of the geometry.
Associate a closed line:
l = doc.associateClosedLine(mfirst, mstart, mline, gstart, pstart, gline)
Note for face association
Face association (implicite or explicite) is not necessary for:
planar faces,
cylindrical faces,
conical faces.
Only edges association (implicite) on segments or arcs of cirle is necessary.
The following example show a model of block on which there isn’t faces association but only implicite edges association on arcs of circle.
Example
1# -*- coding: latin-1 -*-
2# Copyright (C) 2009-2026 CEA, EDF
3#
4# This library is free software; you can redistribute it and/or
5# modify it under the terms of the GNU Lesser General Public
6# License as published by the Free Software Foundation; either
7# version 2.1 of the License, or (at your option) any later version.
8#
9# This library is distributed in the hope that it will be useful,
10# but WITHOUT ANY WARRANTY; without even the implied warranty of
11# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12# Lesser General Public License for more details.
13#
14# You should have received a copy of the GNU Lesser General Public
15# License along with this library; if not, write to the Free Software
16# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17#
18# See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
19#
20
21import hexablock
22
23
24
25doc = hexablock.addDocument ("test_cone")
26
27orig = doc.addVertex (0, 0, 0)
28ori2 = doc.addVertex (0, 0, 10)
29vz = doc.addVector (0, 0, 1)
30vx = doc.addVector (1 ,0, 0)
31
32rad1 = 2.0
33rad2 = 1.0
34height = 5.0
35angle = 270.0
36hollow = False
37
38nr = 2
39na = 8
40nl = 1
41
42c1 = doc.makeCylindrical (orig, vx,vz, rad1, angle, height, nr,na,nl, hollow)
43c2 = doc.makeCylindrical (ori2, vx,vz, rad2, angle, height, nr,na,nl, hollow)
44
45vh0 = c2.getVertexIJK (0, 0, 0)
46vh1 = c2.getVertexIJK (1, 0, 0)
47
48vb0 = c1.getVertexIJK (0, 0, nl)
49vb1 = c1.getVertexIJK (1, 0, nl)
50
51qcible = c2.getQuadIJ (0, 0, 0)
52qliste = []
53for ni in range (nr) :
54 for nj in range (na) :
55 quad = c1.getQuadIJ (ni, nj, nl)
56 qliste.append (quad)
57
58## Join quads to make a cone between the 2 cylinders
59doc.joinQuads (qliste, qcible, vb0, vh0, vb1, vh1, 1)
60
61### -------------------- Mesh
62law = doc.addLaw ("Uniform", 4)
63
64for np in range(doc.countPropagation()):
65 propa = doc.getPropagation (np)
66 propa.setLaw (law)
67
68mesh_hexas = hexablock.mesh(doc)
69
Result
Cone mesh
GUI command: Associate the model of blocks to the geometry