mirror of
https://git.salome-platform.org/gitpub/modules/smesh.git
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73 lines
2.3 KiB
Python
73 lines
2.3 KiB
Python
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# -*- coding: utf-8 -*-
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import logging
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from geomsmesh import geompy
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# -----------------------------------------------------------------------------
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# --- trouver les vertices intermediaires d'un wire
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def orderEdgesFromWire(aWire):
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"""
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fournit les edges ordonnées d'un wire selon ExtractShapes(,,False),
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et l'ordre des edges selon le sens de parcours (ordre des indices de la liste d'edges)
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"""
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logging.info("start")
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edges = geompy.ExtractShapes(aWire, geompy.ShapeType["EDGE"], False)
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idverts = {}
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for i, edge in enumerate(edges):
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verts = geompy.ExtractShapes(edge, geompy.ShapeType["VERTEX"], True)
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# idverts[(i,0)] = verts[0]
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# idverts[(i,1)] = verts[1]
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v0 = geompy.MakeVertexOnCurve(edge, 0.0)
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dist = geompy.MinDistance(v0, verts[0])
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if dist < 1.e-4:
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idverts[(i,0)] = verts[0]
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idverts[(i,1)] = verts[1]
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else:
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idverts[(i,0)] = verts[1]
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idverts[(i,1)] = verts[0]
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idsubs = {}
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for kv, sub in idverts.iteritems():
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subid = geompy.GetSubShapeID(aWire, sub)
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if subid in idsubs.keys():
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idsubs[subid].append(kv)
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else:
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idsubs[subid] = [kv]
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debut = -1
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fin = -1
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for k, kvs in idsubs.iteritems():
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if len(kvs) == 1: # une extremité
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kv = kvs[0]
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if kv[1] == 0:
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debut = kv[0]
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else:
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fin = kv[0]
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logging.debug("nombre d'edges: %s, indice edge début: %s, fin: %s",len(edges), debut, fin)
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if debut < 0:
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logging.critical("les edges du wire ne sont pas orientées dans le même sens: pas de début trouvé")
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return edges, range(len(edges))
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orderedList = [debut]
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while len(orderedList) < len(edges):
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bout = orderedList[-1]
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vertex = idverts[(bout,1)]
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for k, v in idverts.iteritems():
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if k[0] not in orderedList:
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if geompy.MinDistance(vertex, v) < 1.e-4:
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if k[1] == 0:
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orderedList.append(k[0])
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break
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else:
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logging.critical("les edges du wire ne sont pas orientées dans le même sens: une edge à l'envers")
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return edges, range(len(edges))
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logging.debug("liste des edges ordonnées selon le sens de parcours: %s", orderedList)
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accessList = range(len(orderedList))
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for i,k in enumerate(orderedList):
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accessList[k] = i
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logging.info("position ordonnée des edges selon le sens de parcours: %s", accessList)
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return edges, accessList
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