--- /dev/null
+# -*- coding: iso-8859-1 -*-
+# Copyright (C) 2016-2023 CEA/DEN, EDF R&D
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+# See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+#
+
+# File : SMESH_controls_scaled_jacobian.py
+# Author : Cesar Conopoima
+# Module : SMESH
+#
+import salome
+import math
+salome.salome_init_without_session()
+
+import GEOM
+import SMESH
+from salome.geom import geomBuilder
+from salome.smesh import smeshBuilder
+
+def assertWithDelta( refval, testvals, delta ):
+ return ( refval <= testvals+delta and refval >= testvals-delta )
+
+geompy = geomBuilder.New()
+smesh_builder = smeshBuilder.New()
+
+Box_1 = geompy.MakeBoxDXDYDZ(10, 10, 10)
+geompy.addToStudy( Box_1, 'Box_1' )
+
+smesh = smeshBuilder.New()
+
+Mesh_1 = smesh.Mesh(Box_1,'Mesh_1')
+NETGEN_1D_2D_3D = Mesh_1.Tetrahedron(algo=smeshBuilder.NETGEN_1D2D3D)
+Done = Mesh_1.Compute()
+
+if not Done:
+ raise Exception("Error when computing NETGEN_1D2D3D Mesh for quality control test")
+
+#For tetra elements
+perfect = 1.0
+externals = math.sqrt( 2.0 )/2.0
+notPerfectElements = smesh.GetFilter(SMESH.VOLUME, SMESH.FT_ScaledJacobian, SMESH.FT_LessThan, perfect - 1e-12 )
+perfectElements = smesh.GetFilter(SMESH.VOLUME, SMESH.FT_ScaledJacobian, SMESH.FT_EqualTo, perfect )
+externalElements = smesh.GetFilter(SMESH.VOLUME, SMESH.FT_ScaledJacobian, SMESH.FT_EqualTo, externals )
+
+notPerfectIds = Mesh_1.GetIdsFromFilter(notPerfectElements)
+perfectIds = Mesh_1.GetIdsFromFilter(perfectElements)
+externalsIds = Mesh_1.GetIdsFromFilter(externalElements)
+
+assert( len(notPerfectIds) == 4 )
+assert( len(perfectIds) == 1 )
+assert( len(externalsIds) == 4 )
+
+# Test GetScaledJacobian by elementId
+for id in range(len(perfectIds)):
+ assert( assertWithDelta( perfect, Mesh_1.GetScaledJacobian( perfectIds[ id ] ), 1e-12) )
+
+for id in range(len(externalsIds)):
+ assert( assertWithDelta( externals, Mesh_1.GetScaledJacobian( externalsIds[ id ] ), 1e-12) )
+
+#For hexa elements
+Mesh_2 = smesh.Mesh(Box_1,'Mesh_2')
+Cartesian_3D = Mesh_2.BodyFitted()
+Body_Fitting_Parameters_1 = Cartesian_3D.SetGrid([ [ '5.0' ], [ 0, 1 ]],[ [ '5.0' ], [ 0, 1 ]],[ [ '5.0' ], [ 0, 1 ]],4,0)
+Done = Mesh_2.Compute()
+
+if not Done:
+ raise Exception("Error when computing BodyFitted Mesh for quality control test")
+
+notPerfectIds = Mesh_2.GetIdsFromFilter(notPerfectElements)
+perfectIds = Mesh_2.GetIdsFromFilter(perfectElements)
+
+assert( len(notPerfectIds) == 0 )
+assert( len(perfectIds) == 8 )
+
+# Test GetScaledJacobian by elementId
+for id in range(len(perfectIds)):
+ assert( assertWithDelta( perfect, Mesh_2.GetScaledJacobian( perfectIds[ id ] ), 1e-12) )
+
+#For hexa elements with poor quality
+Mesh_3 = smesh.Mesh(Box_1,'Mesh_3')
+Cartesian_3D = Mesh_3.BodyFitted()
+Body_Fitting_Parameters_1 = Cartesian_3D.SetGrid([ [ '5.0' ], [ 0, 1 ]],[ [ '5.0' ], [ 0, 1 ]],[ [ '5.0' ], [ 0, 1 ]],4,0)
+Body_Fitting_Parameters_1.SetAxesDirs( SMESH.DirStruct( SMESH.PointStruct ( 1, 0, 1 )), SMESH.DirStruct( SMESH.PointStruct ( 0, 1, 0 )), SMESH.DirStruct( SMESH.PointStruct ( 0, 0, 1 )) )
+Done = Mesh_3.Compute()
+
+if not Done:
+ raise Exception("Error when computing BodyFitted Distorted Mesh for quality control test")
+
+#Polyhedrons return zero scaled jacobian because of lack for a decomposition into simpler forms
+Polys = 0.0
+#Hexahedrons that are distorted by an angle of 45
+# Scaled Jacobian which is a measure of elements distortion
+# will return cos(45) = math.sqrt( 2.0 )/2.0
+distorted = math.sqrt( 2.0 )/2.0
+polysElements = smesh.GetFilter(SMESH.VOLUME, SMESH.FT_ScaledJacobian, SMESH.FT_EqualTo, Polys )
+distortedElements = smesh.GetFilter(SMESH.VOLUME, SMESH.FT_ScaledJacobian, SMESH.FT_EqualTo, distorted )
+
+polysIds = Mesh_3.GetIdsFromFilter(polysElements)
+distortedIds = Mesh_3.GetIdsFromFilter(distortedElements)
+
+assert( len(polysIds) == 4 )
+assert( len(distortedIds) == 8 )
+
+# Test GetScaledJacobian by elementId
+for id in range(len(distortedIds)):
+ assert( assertWithDelta( distorted, Mesh_3.GetScaledJacobian( distortedIds[ id ] ), 1e-12 ) )
+
+#Test the pentahedron
+Mesh_4 = smesh.Mesh(Box_1,'Mesh_4')
+Cartesian_3D = Mesh_4.BodyFitted()
+Body_Fitting_Parameters_1 = Cartesian_3D.SetGrid([ [ '4' ], [ 0, 1 ]],[ [ '4' ], [ 0, 1 ]],[ [ '4' ], [ 0, 1 ]],4,0)
+Body_Fitting_Parameters_1.SetAxesDirs( SMESH.DirStruct( SMESH.PointStruct ( 1, 0, 1 )), SMESH.DirStruct( SMESH.PointStruct ( 0, 1, 0 )), SMESH.DirStruct( SMESH.PointStruct ( 0, 0, 1 )) )
+Body_Fitting_Parameters_1.SetSizeThreshold( 4 )
+Body_Fitting_Parameters_1.SetToAddEdges( 0 )
+Body_Fitting_Parameters_1.SetGridSpacing( [ '2' ], [ 0, 1 ], 0 )
+Body_Fitting_Parameters_1.SetGridSpacing( [ '2' ], [ 0, 1 ], 1 )
+Body_Fitting_Parameters_1.SetGridSpacing( [ '2' ], [ 0, 1 ], 2 )
+Done = Mesh_4.Compute()
+
+if not Done:
+ raise Exception("Error when computing BodyFitted Distorted Mesh for quality control test")
+
+pentahedrons = 0.6
+pentasAndPolys = smesh.GetFilter(SMESH.VOLUME, SMESH.FT_ScaledJacobian, SMESH.FT_LessThan, pentahedrons )
+#Distorted hexas
+
+polysIds = Mesh_4.GetIdsFromFilter(polysElements)
+pentasAndPolysIds = Mesh_4.GetIdsFromFilter(pentasAndPolys)
+
+assert( len(pentasAndPolysIds) - len(polysIds) == 10 )
