+# -*- coding: iso-8859-1 -*-
+# Copyright (C) 2007-2011 CEA/DEN, EDF R&D, OPEN CASCADE
+#
+# 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.
+#
+# 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
+#
+
+# Author: Guillaume Boulant (EDF/R&D)
+
+# ==================================================================
+# This file provides helper functions to drive some SMESH gui features
+# of a SALOME Application (the selection of mesh objects in the object
+# browser for now, further development coming soon).
+# ==================================================================
+
+from salome.gui import helper
+
+#
+# ==================================================================
+# Special functions to deal with SMESH objects
+# ==================================================================
+#
+import salome
+salome.salome_init()
+import SMESH
+
+def getSmeshObjectFromSObject(sobject):
+ '''
+ Returns the SMESH object associated to the specified SObject,
+ (the SObject is an item in the objects browser).
+ '''
+ if sobject is None:
+ return None
+
+ #theObject = sobject.GetObject()
+ #if theObject is not None:
+ # return theObject
+
+ # The engine must be loaded
+ theStudy = helper.getActiveStudy()
+ theBuilder = theStudy.NewBuilder()
+ strContainer, strComponentName = "FactoryServer", "SMESH"
+ engine = salome.lcc.FindOrLoadComponent( strContainer, strComponentName )
+ scomponent = theStudy.FindComponent( strComponentName )
+ theBuilder.LoadWith( scomponent , engine )
+
+ # The servant can be retrieved from the sobject
+ theObject = sobject.GetObject()
+ # Then cast to the smesh desired class (supposed to be a mesh in
+ # this example).
+ smeshObject = theObject._narrow(SMESH.SMESH_Mesh)
+ return smeshObject
+
+import smesh
+def getSmeshObjectFromEntry(entry):
+ '''
+ Returns the SMESH object associated to the specified entry,
+ (the entry is the identifier of an item in the objects browser).
+ '''
+ if entry is None:
+ return None
+ theStudy = helper.getActiveStudy()
+ smesh.SetCurrentStudy(theStudy)
+ smeshObject=smesh.IDToObject(entry)
+ return smeshObject
+
+def getSmeshObjectSelected():
+ '''
+ Returns the SMESH object currently selected in the objects browser.
+ '''
+ sobject, entry = helper.getSObjectSelected()
+ # You can retrieve the smesh object either from the sobject or
+ # from the entry. From the entry is quicker.
+ #smeshObject = getSmeshObjectFromSObject(sobject)
+ smeshObject = getSmeshObjectFromEntry(entry)
+ return smeshObject
+
+SmeshGUI = salome.ImportComponentGUI("SMESH")
+def displaySmeshObject(entry):
+ '''
+ Display the SMESH object associated to the specified entry
+ (the entry is the identifier of an item in the objects browser).
+ '''
+ if not SalomeGUI.hasDesktop():
+ print "displayGeomObjects: no desktop available"
+ return
+ SmeshGUI.CreateAndDisplayActor(entry)
+
+#
+# ==================================================================
+# Use cases and demo functions
+# ==================================================================
+#
+
+# CAUTION: Before running this test functions, you first have to
+# create (or import) an smesh object and select this object in the
+# objects browser. You can run the box mesh creation procedure below
+# instead.
+
+def TEST_createBoxMesh():
+ theStudy = helper.getActiveStudy()
+
+ import geompy
+ geompy.init_geom(theStudy)
+ box = geompy.MakeBoxDXDYDZ(200, 200, 200)
+
+ import smesh, SMESH, SALOMEDS
+ smesh.SetCurrentStudy(theStudy)
+ import StdMeshers
+ boxmesh = smesh.Mesh(box)
+ Regular_1D = boxmesh.Segment()
+ Nb_Segments_1 = Regular_1D.NumberOfSegments(15)
+ Nb_Segments_1.SetDistrType( 0 )
+ Quadrangle_2D = boxmesh.Quadrangle()
+ Hexa_3D = smesh.CreateHypothesis('Hexa_3D')
+ status = boxmesh.AddHypothesis(Hexa_3D)
+ isDone = boxmesh.Compute()
+
+ smesh.SetName(boxmesh.GetMesh(), 'boxmesh')
+ if salome.sg.hasDesktop():
+ salome.sg.updateObjBrowser(1)
+
+#
+# Definitions:
+# - the SObject is an item in the study (Study Object).
+# - the entry is the identifier of an item.
+# - the object (geom object or smesh object) is a CORBA servant
+# embedded in the SALOME component container and with a reference in
+# the SALOME study, so that it can be retrieved.
+#
+
+def TEST_selectAndExport_01():
+ myMesh = getSmeshObjectSelected()
+ myMesh.ExportUNV("/tmp/myMesh.unv")
+
+def TEST_selectAndExport_02():
+ # In this case, we want to retrieve the name of the mesh in the
+ # object browser. Note that in SALOME, a mesh object has no
+ # name. Only the SObject in the object browser has a name
+ # attribute.
+ mySObject, myEntry = helper.getSObjectSelected()
+ myName = mySObject.GetName()
+
+ myMesh = getSmeshObjectFromEntry(myEntry)
+ exportFileName = "/tmp/"+myName+".unv"
+ myMesh.ExportUNV(exportFileName)
+
+if __name__ == "__main__":
+ TEST_selectAndExport_01()
+ TEST_selectAndExport_02()
