def getWires(self):
q = time.clock()
en = self.graphBuilder.walkEdges()
#print "Walked Edges-- %d total paths, %0.3f sec" % (len(en), ( time.clock() - q ) );
wires = []
for path in en:
wb = OCCUtil.WireBuilder()
for edge in Util.pairwise(path):
#each pair is a set of nodes that form an edge in the graph. We need to ge the OCC edges from each
for occEdge in self.graphBuilder.getEdges(edge[0], edge[1]):
wb.add(OCCUtil.cast(occEdge))
wires.append(wb.wire())
return wires
def build(self):
topoWire = Topo(self.wire)
#compute closest point on the wire
brp = BRepExtrema.BRepExtrema_DistShapeShape()
brp.LoadS1(OCCUtil.make_vertex(self.startPoint))
brp.LoadS2(self.wire)
result = brp.Perform()
p1 = brp.PointOnShape2(1)
wb = OCCUtil.WireBuilder()
closestParam = None
if brp.SupportTypeShape2(1) == BRepExtrema.BRepExtrema_IsOnEdge:
#closest point is a point along an edge
interSectingEdge = OCCUtil.cast(brp.SupportOnShape2(1))
closestParam = brp.ParOnEdgeS2(1)
else:
#closest point is a point on a vertex, here we'll shorten one edge
#in this case closest point is a vertex, so we dont have a param on an edge
vertex = OCCUtil.cast(brp.SupportOnShape2(1))
edges = []
for e in topoWire.edges_from_vertex(vertex):
edges.append(e)
interSectingEdge = edges[0]
#compute parameter along one curve
#break the edge into two new edges. account for a split distance between them.
ej = EdgeJoin(interSectingEdge, self.startPoint, self.trackWidth,
closestParam)
#add lead-in edges
for e in ej.connectingEdges:
wb.add(e)
#now add all of the other edges in the wire except the original one that we split
for e in topoWire.edges():
if not e.IsSame(interSectingEdge):
wb.add(e)
for e in ej.otherEdges:
wb.add(e)
return wb.wire()
def buildWire(self):
#simply do the work of the trimming and construction.
wB = OCCUtil.WireBuilder()
wire = self.jointRequest.wire
tw = Topo(wire)
edgeToTrim = self.pointOnEdge.edge
#shorten the selected edge
#TODO: maybe simplify this to return pointOnEdge?
(self.trimmedEdge, self.trimmedPoint,
self.trimmedVec) = OCCUtil.shortenEdge(edgeToTrim,
self.pointOnEdge.point,
self.trimDistance)
wB.add(self.trimmedEdge)
#add the edges we didnt touch
for e in tw.edges():
if not e.IsSame(edgeToTrim):
wB.add(e)
self.wire = wB.wire()
