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 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()
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()
def makeExtrusionWire( shellWire, startPoint, trackWidth):
topoWire = Topo(shellWire);
#compute closest point on the wire
brp = BRepExtrema.BRepExtrema_DistShapeShape();
brp.LoadS1(OCCUtil.make_vertex(startPoint));
brp.LoadS2(shellWire);
result = brp.Perform();
p1 = brp.PointOnShape2(1);
wb = WireBuilder();
#make an edge from start point to located point.
#wb.add ( OCCUtil.edgeFromTwoPoints(startPoint, p1 ) );
dist = p1.Distance(p2)
if brp.SupportTypeShape2(1) == BRepExtrema.BRepExtrema_IsOnEdge:
#closest point is a point along an edge
interSectingEdge = OCCUtil.cast(brp.SupportOnShape2(1));
p = brp.ParOnEdgeS2(1);
#compute parameter along one curve
#break the edge into two new edges. account for a split distance between them.
(e1,e2)= OCCUtil.splitEdge(interSectingEdge,p);
wb.add(e1);
#add second one shortened, on the end near the vertex
wb.add ( OCCUtil.shortenEdge(e2,p1,trackWidth)); #hack, must find parameter closest to this end
#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);
else:
#closest point is a point on a vertex, here we'll shorten one edge
#
vertex = OCCUtil.cast(brp.SupportOnShape2(1));
edges = [];
for e in topoWire.edges_from_vertex(vertex):
edges.append(e);
#shorten one, leave other intact
#try to handle case where vertex is at end of a wire ( ie a non-closed wire )
e1 = edges[0];
wb.add( edges[0]);
e2 = None;
if len(edges) > 1:
e2 = edges[1];
e3 = OCCUtil.shortenEdge(e2,p1,trackWidth); #hack-- find edges closest to this end
#display.DisplayColoredShape(e3,'BLUE')
wb.add ( e3);
for e in topoWire.edges():
if e.IsSame(e1): continue;
if e2 and e.IsSame(e2): continue;
wb.add ( e );
return wb.wire();
