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 # -----------------------------------------------------------------------------
112 from MEDLoader import MEDLoader, MEDCouplingFieldDouble, ON_NODES, DataArrayDouble, MEDFileMesh
114 def createZfield2(fichierMaillage):
116 Complete the mesh for Telemac.
117 Add a field on nodes, named "BOTTOM", of type double, containing z coordinates of nodes.
118 createZfield2 is used after interpolZ. createZfield1 is base on MEDLoader interface.
119 There is an alternate method based on Med file, equivalent (createZfield1).
120 fichierMaillage : 2D (x,y) med file produced by SMESH and used by interpolZ.
121 return <fichierMaillage>F.med : med file containing the field "BOTTOM"
124 noms = string.split(fichierMaillage,'.')
125 basename = string.join(noms[:-1], '.')
126 fichierZMaillage = basename + 'Z.med'
127 fichierFMaillage = basename + 'F.med'
128 print fichierFMaillage
130 mymesh = MEDLoader.ReadUMeshFromFile(fichierZMaillage,0)
131 fieldOnNodes=MEDCouplingFieldDouble.New(ON_NODES)
132 fieldOnNodes.setName("BOTTOM")
133 fieldOnNodes.setMesh(mymesh)
134 fieldOnNodes.setArray(mymesh.getCoords()[:,2])
135 mm=MEDFileMesh.New(fichierZMaillage)
136 mm.write(fichierFMaillage,2)
137 MEDLoader.WriteFieldUsingAlreadyWrittenMesh(fichierFMaillage,fieldOnNodes)
139 # -----------------------------------------------------------------------------
143 class MyInterpolator( HYDROPy.HYDROData_IInterpolator ):
144 def GetAltitudeForPoint( self, theCoordX, theCoordY ):
145 alt_obj = HYDROPy.HYDROData_IInterpolator.GetAltitudeObject( self );
146 z = alt_obj.GetAltitudeForPoint( theCoordX, theCoordY ) # Custom calculation takes the base value and changes it to test
151 # -----------------------------------------------------------------------------
155 from salome.smesh import smeshBuilder
157 smesh = smeshBuilder.New(theStudy)
159 def interpolZ(nomCas, fichierMaillage, dicoGroupeRegion, zUndef, interpolMethod = 0):
161 interpolZ takes a 2D (x,y) mesh and calls the active instance of module HYDRO
162 to interpolate the bathymetry/altimetry on the mesh nodes, to produce the Z value of each node.
163 interpolZ must be followed by createZfield1 or createZfield2.
164 nomCas: Calculation Case Name in module HYDRO
165 fichierMaillage: med file name produced by SMESH, corresponding to the HYDRO case
166 dicoGroupeRegion: python dictionary giving the coorespondance of mesh groups to HYDRO regions.
167 Key: face group name, value: region name in the HYDRO Case
168 zUndef: Z value to use for nodes outside the regions (there must be none if the case is correct).
169 interpolMethod: integer value, default 0 = nearest point on bathymetry, 1 = linear interpolation
170 return <fichierMaillage>Z.med : med file with Z value on nodes
171 return <fichierMaillage>F.med : an exact copy of <fichierMaillage>Z.med
174 doc = HYDROPy.HYDROData_Document.Document( theStudyId )
175 cas = doc.FindObjectByName(nomCas)
177 custom_inter = MyInterpolator()
179 noms = string.split(fichierMaillage,'.')
180 basename = string.join(noms[:-1], '.')
181 fichierZMaillage = basename + 'Z.med'
182 fichierFMaillage = basename + 'F.med'
183 fichierFonds = basename + '.xyz'
185 print fichierMaillage
186 print fichierZMaillage
187 print fichierFMaillage
191 ([maillagePlat], status) = smesh.CreateMeshesFromMED(fichierMaillage)
192 groups = maillagePlat.GetGroups()
194 grpns = [grp for grp in groups if grp.GetType() == SMESH.NODE]
196 print "Problem! There are no groups of nodes in the mesh!"
197 print "Please create at least the groups of nodes corresponding to each region of the HYDRO case"
202 if grp.GetType() == SMESH.NODE:
203 grpName = grp.GetName()
205 if grpName in dicoGroupeRegion.keys():
206 regions[dicoGroupeRegion[grpName]] = grp
208 fo = open(fichierFonds, 'w')
210 for nomreg, grp in regions.iteritems():
211 print "------- region : ", nomreg
212 region = doc.FindObjectByName(nomreg)
214 #region.SetInterpolator(custom_inter)
215 nodesIds = grp.GetListOfID()
219 for nodeId in nodesIds:
220 xyz = maillagePlat.GetNodeXYZ(nodeId)
224 vz = cas.GetAltitudesForPoints( vx, vy, region, interpolMethod )
227 statz[grp.GetName()] = (minz, maxz)
230 for i,nodeId in enumerate(nodesIds):
236 #print i, nodeId, x, y, z
237 maillagePlat.MoveNode(nodeId, x, y, z)
238 l = "%10.2f %10.2f %10.2f\n"%(x, y, z)
242 maillagePlat.ExportMED(fichierZMaillage , 0, SMESH.MED_V2_2, 1 )
243 maillagePlat.ExportMED(fichierFMaillage , 0, SMESH.MED_V2_2, 1 )
246 # -----------------------------------------------------------------------------