364 lines
12 KiB
Python
364 lines
12 KiB
Python
|
#!python
|
||
|
|
# =============================================================================
|
||
|
|
# Python module for writing OpenFOAM feature edge and triSurface files from
|
||
|
|
# within Salome platform.
|
||
|
|
# Tested on Salome 7.4.0 and python 2.7 on 64-bit Windows
|
||
|
|
#
|
||
|
|
# Author: Ivor Clifford <ivor.clifford@psi.ch>
|
||
|
|
#
|
||
|
|
# =============================================================================
|
||
|
|
|
||
|
|
def foamHeader(className, objectName):
|
||
|
|
'''
|
||
|
|
Return the OpenFOAM file header block as a string.
|
||
|
|
'''
|
||
|
|
return '''/*--------------------------------*- C++ -*----------------------------------*\\
|
||
|
|
| ========= | |
|
||
|
|
| \\\\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
|
||
|
|
| \\\\ / O peration | Version: 2.2.1 |
|
||
|
|
| \\\\ / A nd | Web: www.OpenFOAM.org |
|
||
|
|
| \\\\/ M anipulation | |
|
||
|
|
\\*---------------------------------------------------------------------------*/
|
||
|
|
FoamFile
|
||
|
|
{
|
||
|
|
version 2.0;
|
||
|
|
format ascii;
|
||
|
|
class %s;
|
||
|
|
object %s;
|
||
|
|
}
|
||
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
||
|
|
|
||
|
|
''' % (className, objectName)
|
||
|
|
|
||
|
|
|
||
|
|
class triSurf:
|
||
|
|
def __init__(self, object = None, allEdges = False):
|
||
|
|
'''
|
||
|
|
Construct from the supplied Salome mesh.
|
||
|
|
|
||
|
|
object - the mesh object (must be a triangular surface mesh). If no
|
||
|
|
object is supplied, the current Salome selection is used.
|
||
|
|
allEdges - If true, all edges on the mesh are included as feature
|
||
|
|
edges, otherwise only edges contained in groups are included
|
||
|
|
|
||
|
|
NOTE: All face groups are assumed to represent patches. No face subsets
|
||
|
|
are written. All edge groups are added as feature edge subsets. All point
|
||
|
|
groups are added as point subsets.
|
||
|
|
'''
|
||
|
|
# =============================================================================
|
||
|
|
# Initialize salome
|
||
|
|
import salome
|
||
|
|
import SMESH, SALOMEDS
|
||
|
|
from salome.smesh import smeshBuilder
|
||
|
|
from operator import itemgetter
|
||
|
|
from collections import OrderedDict
|
||
|
|
|
||
|
|
import SMESH, SALOMEDS
|
||
|
|
|
||
|
|
# =============================================================================
|
||
|
|
# Get the Salome mesh object
|
||
|
|
if object is None:
|
||
|
|
selected = salome.sg.getAllSelected()
|
||
|
|
if len(selected) != 1:
|
||
|
|
raise RuntimeError('A single Salome mesh object must be selected.')
|
||
|
|
|
||
|
|
object = salome.myStudy.FindObjectID(selected[0]).GetObject()
|
||
|
|
|
||
|
|
try:
|
||
|
|
object.GetMesh()
|
||
|
|
except:
|
||
|
|
raise RuntimeError('Supplied object is not a Salome SMESH mesh.')
|
||
|
|
|
||
|
|
smesh = smeshBuilder.New(salome.myStudy)
|
||
|
|
mesh = smesh.Mesh(object)
|
||
|
|
|
||
|
|
print "Converting SMESH Mesh '%s'" % mesh.GetName()
|
||
|
|
|
||
|
|
# =============================================================================
|
||
|
|
# Get basic mesh info
|
||
|
|
nNodes = mesh.NbNodes()
|
||
|
|
nFaces = mesh.NbFaces()
|
||
|
|
nTris = mesh.NbTriangles()
|
||
|
|
nEdges = mesh.NbEdges()
|
||
|
|
nodeIds = mesh.GetNodesId()
|
||
|
|
faceIds = mesh.GetElementsByType(SMESH.FACE)
|
||
|
|
edgeIds = mesh.GetElementsByType(SMESH.EDGE)
|
||
|
|
|
||
|
|
# Check that mesh is strictly triangular
|
||
|
|
if nFaces != nTris:
|
||
|
|
raise RuntimeError('Mesh is not strictly triangular')
|
||
|
|
|
||
|
|
# Get patch and subset names & ids
|
||
|
|
# All SMESH.FACE groups are assumed to be patches
|
||
|
|
# All SMESH.EDGE groups are assumed to be feature subsets
|
||
|
|
# All SMESH.NODE groups are assumed to be point subsets
|
||
|
|
patches = OrderedDict()
|
||
|
|
pointSubsets = OrderedDict()
|
||
|
|
featureEdgeSubsets = OrderedDict()
|
||
|
|
|
||
|
|
for group in mesh.GetGroups():
|
||
|
|
if group.GetType() == SMESH.FACE:
|
||
|
|
patches[group.GetName()] = group.GetIDs()
|
||
|
|
elif group.GetType() == SMESH.EDGE:
|
||
|
|
featureEdgeSubsets[group.GetName()] = group.GetIDs()
|
||
|
|
elif group.GetType() == SMESH.NODE:
|
||
|
|
pointSubsets[group.GetName()] = group.GetIDs()
|
||
|
|
|
||
|
|
# =============================================================================
|
||
|
|
# Process faces and patches
|
||
|
|
# Get patchId for each face
|
||
|
|
lastPatchId = len(patches)
|
||
|
|
patchIds = [lastPatchId] * max(faceIds)
|
||
|
|
patchId = 0
|
||
|
|
for name, ids in patches.iteritems():
|
||
|
|
for faceId in ids:
|
||
|
|
if patchIds[faceId-1] == lastPatchId:
|
||
|
|
patchIds[faceId-1] = patchId
|
||
|
|
else:
|
||
|
|
print "Face %d is assigned to both groups %s and %s" % (faceId, name, patches.keys()[patchIds[faceId-1]])
|
||
|
|
raise RuntimeError('Groups of faces are not unique, i.e. they overlap.')
|
||
|
|
|
||
|
|
patchId += 1
|
||
|
|
|
||
|
|
# Compact and reorder patchIds to match faceIds
|
||
|
|
patchIds = [patchIds[faceId-1] for faceId in faceIds]
|
||
|
|
|
||
|
|
# Reorder faces by increasing group id
|
||
|
|
faceAndpatchIds = sorted(zip(faceIds, patchIds), key=itemgetter(1))
|
||
|
|
faceIds, patchIds = zip(*faceAndpatchIds)
|
||
|
|
|
||
|
|
# Add unused faces to the default patch
|
||
|
|
defaultFaces = [faceId for faceId, patchId in faceAndpatchIds if patchId == lastPatchId]
|
||
|
|
if len(defaultFaces) > 0:
|
||
|
|
patches['defaultFaces'] = defaultFaces
|
||
|
|
|
||
|
|
defaultFaces = None
|
||
|
|
|
||
|
|
# =============================================================================
|
||
|
|
# Process feature edges
|
||
|
|
if not allEdges:
|
||
|
|
edgeIds = []
|
||
|
|
for name, ids in featureEdgeSubsets.iteritems():
|
||
|
|
edgeIds += ids
|
||
|
|
|
||
|
|
edgeIds = list(set(edgeIds))
|
||
|
|
nEdges = len(edgeIds)
|
||
|
|
|
||
|
|
# Reverse mapping of edge ids since they aren't necessarily numbered 1..nEdges
|
||
|
|
if len(edgeIds):
|
||
|
|
edgeMap = [-1] * max(edgeIds)
|
||
|
|
else:
|
||
|
|
edgeMap = []
|
||
|
|
|
||
|
|
i=0
|
||
|
|
for edgeId in edgeIds:
|
||
|
|
edgeMap[edgeId-1] = i
|
||
|
|
i += 1
|
||
|
|
|
||
|
|
# =============================================================================
|
||
|
|
# Process nodes
|
||
|
|
# Reverse mapping of node ids since nodes aren't necessarily numbered 1..nNodes
|
||
|
|
nodeMap = [-1] * max(nodeIds)
|
||
|
|
i=0
|
||
|
|
for nodeId in nodeIds:
|
||
|
|
nodeMap[nodeId-1] = i
|
||
|
|
i += 1
|
||
|
|
|
||
|
|
# =============================================================================
|
||
|
|
|
||
|
|
self._mesh = mesh
|
||
|
|
|
||
|
|
self._nodeIds = nodeIds
|
||
|
|
self._edgeIds = edgeIds
|
||
|
|
self._faceIds = faceIds
|
||
|
|
|
||
|
|
self._nodeMap = nodeMap
|
||
|
|
self._edgeMap = edgeMap
|
||
|
|
self._faceMap = []
|
||
|
|
|
||
|
|
self._patches = patches
|
||
|
|
self._pointSubsets = pointSubsets
|
||
|
|
self._featureEdgeSubsets = featureEdgeSubsets
|
||
|
|
self._faceSubsets = {}
|
||
|
|
|
||
|
|
print 'Done'
|
||
|
|
|
||
|
|
def nNodes(self):
|
||
|
|
'''
|
||
|
|
Return the number of nodes
|
||
|
|
'''
|
||
|
|
return len(self._nodeIds)
|
||
|
|
|
||
|
|
def nEdges(self):
|
||
|
|
'''
|
||
|
|
Return the number of edges
|
||
|
|
'''
|
||
|
|
return len(self._edgeIds)
|
||
|
|
|
||
|
|
def nFacets(self):
|
||
|
|
'''
|
||
|
|
Return the number of triangular facets
|
||
|
|
'''
|
||
|
|
return len(self._faceIds)
|
||
|
|
|
||
|
|
def nPatches(self):
|
||
|
|
'''
|
||
|
|
Return the number of patches
|
||
|
|
'''
|
||
|
|
return len(self._patches)
|
||
|
|
|
||
|
|
def _writePatchDefs(self, f, typeName = 'wall'):
|
||
|
|
'''
|
||
|
|
Write the patch definitions to file as an OpenFOAM geometricSurfacePatchList.
|
||
|
|
NOTE: All patches are assumed to be walls.
|
||
|
|
'''
|
||
|
|
patches = self._patches
|
||
|
|
|
||
|
|
f.write('%d\n(\n' % len(patches))
|
||
|
|
for name in patches.iterkeys():
|
||
|
|
f.write('%s\t%s\n' % (name, typeName))
|
||
|
|
|
||
|
|
f.write(')\n')
|
||
|
|
|
||
|
|
def _writeNodes(self, f):
|
||
|
|
'''
|
||
|
|
Write the nodes to file as an OpenFOAM pointField.
|
||
|
|
'''
|
||
|
|
mesh = self._mesh
|
||
|
|
nodeIds = self._nodeIds
|
||
|
|
|
||
|
|
f.write('%d\n(\n' % len(nodeIds))
|
||
|
|
|
||
|
|
for x, y, z in [mesh.GetNodeXYZ(nodeId) for nodeId in nodeIds]:
|
||
|
|
f.write( '( %g %g %g )\n' % (x, y, z))
|
||
|
|
|
||
|
|
f.write(')\n')
|
||
|
|
|
||
|
|
def _writeFeatureEdges(self, f):
|
||
|
|
'''
|
||
|
|
Write the feature edges to file as an OpenFOAM edgeList.
|
||
|
|
'''
|
||
|
|
mesh = self._mesh
|
||
|
|
nodeMap = self._nodeMap
|
||
|
|
edgeIds = self._edgeIds
|
||
|
|
|
||
|
|
f.write('%d\n(\n' % len(edgeIds))
|
||
|
|
|
||
|
|
for edgeId in edgeIds:
|
||
|
|
nodes = mesh.GetElemNodes(edgeId)
|
||
|
|
f.write( '(' + ' '.join([str(nodeMap[nodeId-1]) for nodeId in nodes]) + ')\n')
|
||
|
|
|
||
|
|
f.write(')\n')
|
||
|
|
|
||
|
|
def _writeFacets(self, f):
|
||
|
|
'''
|
||
|
|
Write the facets to file as an OpenFOAM List of labelledTri.
|
||
|
|
'''
|
||
|
|
from itertools import chain
|
||
|
|
|
||
|
|
mesh = self._mesh
|
||
|
|
nodeMap = self._nodeMap
|
||
|
|
patches = self._patches
|
||
|
|
|
||
|
|
f.write('%d\n(\n' % sum([len(patch) for patch in patches.itervalues()]))
|
||
|
|
|
||
|
|
patchId = 0
|
||
|
|
for patchId, (patchName, faceIds) in enumerate(patches.iteritems()):
|
||
|
|
for faceId in faceIds:
|
||
|
|
nodes = mesh.GetElemNodes(faceId)
|
||
|
|
f.write( '((' + ' '.join([str(nodeMap[nodeId-1]) for nodeId in nodes]) + ') %d)\n' % patchId)
|
||
|
|
|
||
|
|
f.write(')\n')
|
||
|
|
|
||
|
|
def _writeSubsets(self, f, subsets, map, typeId):
|
||
|
|
'''
|
||
|
|
General function to write a subset to file as an OpenFOAM Map<meshSubset>.
|
||
|
|
'''
|
||
|
|
f.write('%d\n(\n' % len(subsets))
|
||
|
|
for name, ids in subsets.iteritems():
|
||
|
|
f.write('%s %s %d ( %s )\n' % (name, typeId, len(ids), ' '.join([str(map[id-1]) for id in ids])))
|
||
|
|
|
||
|
|
f.write(')\n')
|
||
|
|
|
||
|
|
def _writePointSubsets(self, f):
|
||
|
|
'''
|
||
|
|
Write the point subsets to file as and OpenFOAM Map<meshSubset>.
|
||
|
|
'''
|
||
|
|
self._writeSubsets(f, self._pointSubsets, self._nodeMap, '2')
|
||
|
|
|
||
|
|
def _writeFaceSubsets(self, f):
|
||
|
|
'''
|
||
|
|
Write the face subsets to file as and OpenFOAM Map<meshSubset>.
|
||
|
|
'''
|
||
|
|
self._writeSubsets(f, self._faceSubsets, self._faceMap, '4')
|
||
|
|
|
||
|
|
def _writeFeatureEdgeSubsets(self, f):
|
||
|
|
'''
|
||
|
|
Write the feature edge subsets to file as and OpenFOAM Map<meshSubset>.
|
||
|
|
'''
|
||
|
|
self._writeSubsets(f, self._featureEdgeSubsets, self._edgeMap, '8')
|
||
|
|
|
||
|
|
def writeEdgeMesh(self, fileName):
|
||
|
|
'''
|
||
|
|
Write to file as an OpenFOAM edgeMesh
|
||
|
|
|
||
|
|
fileName - The file name to write
|
||
|
|
'''
|
||
|
|
# Create file
|
||
|
|
f = open(fileName, 'wb') # NOTE: file opened as binary to ensure unix-style line breaks
|
||
|
|
|
||
|
|
# Write header
|
||
|
|
f.write(foamHeader('edgeMesh', self._mesh.GetName()))
|
||
|
|
|
||
|
|
self._writeNodes(f)
|
||
|
|
self._writeFeatureEdges(f)
|
||
|
|
|
||
|
|
f.close()
|
||
|
|
|
||
|
|
print 'edgeMesh written to %s' % fileName
|
||
|
|
|
||
|
|
def writeFtr(self, fileName):
|
||
|
|
'''
|
||
|
|
Write to file as an OpenFOAM cfMesh FTR file
|
||
|
|
|
||
|
|
fileName - the file name to write
|
||
|
|
'''
|
||
|
|
# Create file
|
||
|
|
f = open(fileName, 'wb') # NOTE: file opened as binary to ensure unix-style line breaks
|
||
|
|
|
||
|
|
self._writePatchDefs(f)
|
||
|
|
self._writeNodes(f)
|
||
|
|
self._writeFacets(f)
|
||
|
|
|
||
|
|
f.close()
|
||
|
|
|
||
|
|
print 'triSurf written to %s' % fileName
|
||
|
|
|
||
|
|
def writeFms(self, fileName):
|
||
|
|
'''
|
||
|
|
Write to file as an OpenFOAM cfMesh FMS file
|
||
|
|
|
||
|
|
fileName - the file name to write
|
||
|
|
'''
|
||
|
|
# Create file
|
||
|
|
f = open(fileName, 'wb') # NOTE: file opened as binary to ensure unix-style line breaks
|
||
|
|
|
||
|
|
self._writePatchDefs(f)
|
||
|
|
self._writeNodes(f)
|
||
|
|
self._writeFacets(f)
|
||
|
|
self._writeFeatureEdges(f)
|
||
|
|
self._writePointSubsets(f)
|
||
|
|
self._writeFaceSubsets(f)
|
||
|
|
self._writeFeatureEdgeSubsets(f)
|
||
|
|
|
||
|
|
f.close()
|
||
|
|
|
||
|
|
print 'triSurf written to %s' % fileName
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
import salome
|
||
|
|
salome.salome_init()
|
||
|
|
|
||
|
|
import SMESH, SALOMEDS
|