Quad Revolution

Uniform Quad Revolution

To make a uniform quad revolution you need:

  • quad : the quadrangle from which hexahedrons will be created (only for one quad revolution).

  • quads : a set of quadrangles from which hexahedrons will be created (only for multiple quads revolution).

  • center : center of rotation (a vertex).

  • axis : axis of rotation (a vector).

  • angle : Specify the rotation’s angle at each step.

  • nbLayers: the number of steps.

One quad revolution:

elts = doc.revolutionQuadUni(quad, center, axis, angle, nbLayers)

Revolution of a set of quads:

elts = doc.revolutionQuadsUni(quads, center, axis, angle, nbLayers)

GUI command: Uniform Quad Revolution

Custom Quad Revolution

To make a custom quad revolution you need:

  • quad : the quadrangle from which hexahedrons will be created (only for one quad revolution).

  • quads : a set of quadrangles from which hexahedrons will be created (only for multiple quads revolution).

  • center : center of rotation (a vertex).

  • axis : axis of rotation (a vector).

  • angles : a set of angles (in degrees). Specify the rotation’s angle at each step.

One quad revolution:

elts = doc.revolutionQuad(quad, center, axis, angles)

Revolution of a set of quads:

elts = doc.revolutionQuads(quads, center, axis, angles)

GUI command: Custom Quad Revolution

Operations on elts: Elements

Example

 1# -*- coding: utf-8 -*-
 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
21#### Quad Revolution Test #####
22
23import hexablock
24
25
26doc = hexablock.addDocument("Quad Revolution Test")
27
28center = doc.addVertex(0, 0, 0)
29vz     = doc.addVector(0, 0, 1)
30
31v1     = doc.addVertex (10, 0, 0)
32v2     = doc.addVertex (11, 0, 0)
33v3     = doc.addVertex (11, 0, 2)
34v4     = doc.addVertex (10, 0, 2)
35quad   = doc.addQuadVertices (v1, v2, v3, v4)
36doc.saveVtk("revolution1.vtk")
37
38angle = 180
39nbLayers = 8
40grid0 = doc.revolutionQuadUni  (quad, center, vz, angle, nbLayers)
41doc.saveVtk ("revolution2.vtk")
42
43nr = 1
44na = 6
45nl = 1
46
47grid = doc.makeCylinderTop (nr,na,nl)
48
49liste = []
50for nx in range(nr):
51    for ny in range(na):
52        cell = grid.getQuadIJ (nx, ny, nl)
53        liste.append(cell)
54
55center = doc.addVertex(0, -10, 0)
56axis = doc.addVector (1, 0, 0)
57angle = 180
58nbLayers = 9
59grid1 = doc.revolutionQuadsUni  (liste, center, axis, angle, nbLayers)
60if grid1.isValid():
61    doc.saveVtk ("revolution3.vtk")