1 # -*- coding: utf-8 -*-
4 example of use case of interpolZ and createZfield methods:
6 # --- case name in HYDRO
9 # --- med file 2D(x,y) of the case produced by SMESH
10 fichierMaillage = '/home/B27118/projets/LNHE/garonne/inondation1.med'
12 # --- dictionary [med group name] = region name
13 dicoGroupeRegion= dict(litMineur = 'inondation1_litMineur',
14 litMajeurDroite = 'inondation1_riveDroite',
15 litMajeurGauche = 'inondation1_riveGauche',
17 # --- value to use for Z when the node is not in a region (used to detect problems)
20 # --- Z interpolation on the bathymety/altimetry on the mesh nodes
21 interpolZ(nomCas, fichierMaillage, dicoGroupeRegion, zUndef)
23 # --- add a field on nodes of type double with z values, named "BOTTOM"
24 createZfield2(fichierMaillage)
26 # -----------------------------------------------------------------------------
30 # -----------------------------------------------------------------------------
36 theStudy = salome.myStudy
37 theStudyId = salome.myStudyId
39 # -----------------------------------------------------------------------------
41 from med import medfile
42 from med import medmesh
43 #from med import medfilter
44 from med import medfield
45 from med import medenum
46 #from med import medprofile
47 #from med import medlocalization
48 #from med import medlink
50 def createZfield1(fichierMaillage):
52 Complete the mesh for Telemac.
53 Add a field on nodes, named "BOTTOM", of type double, containing z coordinates of nodes.
54 createZfield1 is used after interpolZ. createZfield1 is base on med file interface.
55 There is an alternate method based on MEDLoader, equivalent (createZfield2).
56 The file <fichierMaillage>F.med produced by interpolz must exist, and is modified.
57 fichierMaillage : 2D (x,y) med file produced by SMESH and used by interpolZ.
58 return <fichierMaillage>F.med : med file containing the field "BOTTOM"
61 noms = string.split(fichierMaillage,'.')
62 basename = string.join(noms[:-1], '.')
63 fichierFMaillage = basename + 'F.med'
64 print fichierFMaillage
66 # --- ouverture du fichier
67 fid=medfile.MEDfileOpen(fichierFMaillage, medenum.MED_ACC_RDEXT)
69 maa, sdim, mdim, meshtype, desc, dtunit, sort, nstep, repere, axisname, axisunit = medmesh.MEDmeshInfo(fid, 1)
70 print "Maillage de nom : %s , de dimension : %d , et de type %s"%(maa,mdim,meshtype)
71 print " Dimension de l'espace : %d"%(sdim)
73 # --- Combien de noeuds a lire ?
74 nnoe, chgt, trsf = medmesh.MEDmeshnEntity(fid, maa, medenum.MED_NO_DT, medenum.MED_NO_IT,
75 medenum.MED_NODE, medenum.MED_NONE,
76 medenum.MED_COORDINATE, medenum.MED_NO_CMODE)
79 # --- Allocations memoire
80 # --- table des coordonnees flt : (dimension * nombre de noeuds )
81 coords = medfile.MEDFLOAT(nnoe*sdim)
82 # --- table des numeros des noeuds
83 numnoe = medfile.MEDINT(nnoe)
85 # --- Lecture des composantes des coordonnees des noeuds
86 medmesh.MEDmeshNodeCoordinateRd(fid, maa, medenum.MED_NO_DT, medenum.MED_NO_IT,
87 medenum.MED_FULL_INTERLACE, coords)
88 #print "Valeur de coords : ",coords
89 valz=medfile.MEDFLOAT([z for (i,z) in enumerate(coords) if i%3==2])
90 #print "Valeur de z : ",valz
92 # --- creation du champ
95 # --1234567890123456--
99 medfield.MEDfieldCr(fid, nomcha1, medfile.MED_FLOAT64,
100 ncomp1, comp1, unit1, dtunit, maa)
102 # --- ecriture du champ
104 medfield.MEDfieldValueWr(fid, nomcha1, medenum.MED_NO_DT, medenum.MED_NO_IT, 0.0,
105 medenum.MED_NODE, medenum.MED_NONE,
106 medenum.MED_FULL_INTERLACE, medenum.MED_ALL_CONSTITUENT, nnoe, valz)
107 # --- fermeture du fichier
108 medfile.MEDfileClose(fid)
110 # -----------------------------------------------------------------------------
113 from MEDLoader import MEDCouplingFieldDouble, ON_NODES, DataArrayDouble, MEDFileMesh
115 def createZfield2(fichierMaillage):
117 Complete the mesh for Telemac.
118 Add a field on nodes, named "BOTTOM", of type double, containing z coordinates of nodes.
119 createZfield2 is used after interpolZ. createZfield1 is base on MEDLoader interface.
120 There is an alternate method based on Med file, equivalent (createZfield1).
121 fichierMaillage : 2D (x,y) med file produced by SMESH and used by interpolZ.
122 return <fichierMaillage>F.med : med file containing the field "BOTTOM"
125 noms = string.split(fichierMaillage,'.')
126 basename = string.join(noms[:-1], '.')
127 fichierZMaillage = basename + 'Z.med'
128 fichierFMaillage = basename + 'F.med'
129 print fichierFMaillage
131 mymesh = MEDLoader.ReadUMeshFromFile(fichierZMaillage,0)
132 fieldOnNodes=MEDCouplingFieldDouble.New(ON_NODES)
133 fieldOnNodes.setName("BOTTOM")
134 fieldOnNodes.setMesh(mymesh)
135 fieldOnNodes.setArray(mymesh.getCoords()[:,2])
136 mm=MEDFileMesh.New(fichierZMaillage)
137 mm.write(fichierFMaillage,2)
138 MEDLoader.WriteFieldUsingAlreadyWrittenMesh(fichierFMaillage,fieldOnNodes)
140 # -----------------------------------------------------------------------------
144 class MyInterpolator( HYDROPy.HYDROData_IInterpolator ):
145 def GetAltitudeForPoint( self, theCoordX, theCoordY ):
146 alt_obj = HYDROPy.HYDROData_IInterpolator.GetAltitudeObject( self );
147 z = alt_obj.GetAltitudeForPoint( theCoordX, theCoordY ) # Custom calculation takes the base value and changes it to test
152 # -----------------------------------------------------------------------------
156 from salome.smesh import smeshBuilder
158 smesh = smeshBuilder.New(theStudy)
160 def interpolZ(nomCas, fichierMaillage, dicoGroupeRegion, zUndef, interpolMethod = 0):
162 interpolZ takes a 2D (x,y) mesh and calls the active instance of module HYDRO
163 to interpolate the bathymetry/altimetry on the mesh nodes, to produce the Z value of each node.
164 interpolZ must be followed by createZfield1 or createZfield2.
165 nomCas: Calculation Case Name in module HYDRO
166 fichierMaillage: med file name produced by SMESH, corresponding to the HYDRO case
167 dicoGroupeRegion: python dictionary giving the coorespondance of mesh groups to HYDRO regions.
168 Key: face group name, value: region name in the HYDRO Case
169 zUndef: Z value to use for nodes outside the regions (there must be none if the case is correct).
170 interpolMethod: integer value, default 0 = nearest point on bathymetry, 1 = linear interpolation
171 return <fichierMaillage>Z.med : med file with Z value on nodes
172 return <fichierMaillage>F.med : an exact copy of <fichierMaillage>Z.med
175 doc = HYDROPy.HYDROData_Document.Document( theStudyId )
176 cas = doc.FindObjectByName(nomCas)
178 custom_inter = MyInterpolator()
180 noms = string.split(fichierMaillage,'.')
181 basename = string.join(noms[:-1], '.')
182 fichierZMaillage = basename + 'Z.med'
183 fichierFMaillage = basename + 'F.med'
184 fichierFonds = basename + '.xyz'
186 print fichierMaillage
187 print fichierZMaillage
188 print fichierFMaillage
192 ([maillagePlat], status) = smesh.CreateMeshesFromMED(fichierMaillage)
193 groups = maillagePlat.GetGroups()
195 grpns = [grp for grp in groups if grp.GetType() == SMESH.NODE]
197 print "Problem! There are no groups of nodes in the mesh!"
198 print "Please create at least the groups of nodes corresponding to each region of the HYDRO case"
203 if grp.GetType() == SMESH.NODE:
204 grpName = grp.GetName()
206 if grpName in dicoGroupeRegion.keys():
207 regions[dicoGroupeRegion[grpName]] = grp
209 fo = open(fichierFonds, 'w')
211 for nomreg, grp in regions.iteritems():
212 print "------- region : ", nomreg
213 region = doc.FindObjectByName(nomreg)
215 #region.SetInterpolator(custom_inter)
216 nodesIds = grp.GetListOfID()
220 for nodeId in nodesIds:
221 xyz = maillagePlat.GetNodeXYZ(nodeId)
225 vz = cas.GetAltitudesForPoints( vx, vy, region, interpolMethod )
228 statz[grp.GetName()] = (minz, maxz)
231 for i,nodeId in enumerate(nodesIds):
237 #print i, nodeId, x, y, z
238 maillagePlat.MoveNode(nodeId, x, y, z)
239 l = "%10.2f %10.2f %10.2f\n"%(x, y, z)
243 maillagePlat.ExportMED(fichierZMaillage , 0, SMESH.MED_V2_2, 1 )
244 maillagePlat.ExportMED(fichierFMaillage , 0, SMESH.MED_V2_2, 1 )
247 # -----------------------------------------------------------------------------