Hi- I have just gotten started with pyOCC and have been working on converting the (C++) OpenCascade bottle tutorial to python code as an exercise for coming up to speed on pyOCC. I am using pyOCC version=0.6-beta. The problem I am having is: BRepAlgoAPI_Fuse() doesn't seem to work. (See code appended below.) As I searched for an answer, I came across an old solution written by Thomas Paviot at: http://pythonocc.googlecode.com/svn-history/r72/trunk/tests/test_makebottle.py but this seems to have the same problem. Am I doing something wrong or is there something broken in my version of pyOCC?
- Doug File: OCC_BottleTutorial.py # Adaptation to python of OCC tutorial at: # http://www.opencascade.org/org/gettingstarted/appli # Also found 2008 solution by Thomas Paviot at: # http://pythonocc.googlecode.com/svn-history/r72/trunk/tests/test_makebottle.py import math from OCC.Display.SimpleGui import * from OCC.gp import * from OCC.BRepPrimAPI import * from OCC.GC import * from OCC.TopoDS import * from OCC.BRepBuilderAPI import * from OCC.TopExp import * from OCC.TopAbs import * from OCC.BRepFilletAPI import * from OCC.BRepAlgoAPI import * from OCC.STEPControl import * display, start_display, add_menu, add_function_to_menu = init_display() # Bottle dimensions myHeight = 70 myWidth = 50 myThickness = 30 # Start with points defining the shape of half bottle aPnt1 = gp_Pnt(-myWidth / 2. , 0 , 0) aPnt2 = gp_Pnt(-myWidth / 2. , -myThickness / 4. , 0) aPnt3 = gp_Pnt(0 , -myThickness / 2. , 0) aPnt4 = gp_Pnt(myWidth / 2. , -myThickness / 4. , 0) aPnt5 = gp_Pnt(myWidth / 2. , 0 , 0) # Make lines defining the shape of half bottle aSegment1 = GC_MakeSegment(aPnt1, aPnt2) aSegment2 = GC_MakeSegment(aPnt4, aPnt5) aArcOfCircle = GC_MakeArcOfCircle(aPnt2, aPnt3, aPnt4) if aSegment1.IsDone(): seg1handle = aSegment1.Value() if aSegment2.IsDone(): seg2handle = aSegment2.Value() if aArcOfCircle.IsDone(): arc_handle = aArcOfCircle.Value() # Convert line segments to 'edges' aEdge1 = BRepBuilderAPI_MakeEdge(seg1handle).Edge() aEdge2 = BRepBuilderAPI_MakeEdge(arc_handle).Edge() aEdge3 = BRepBuilderAPI_MakeEdge(seg2handle).Edge() # Convert edges to wire aWire = BRepBuilderAPI_MakeWire(aEdge1, aEdge2, aEdge3).Wire() # Mirror wire and add to get 'whole' bottle mirrorTransform = gp_Trsf() mirrorTransform.SetMirror(gp_Pnt(0.0,0.0,0.0)) # I don't understand this mirrorWireShape = BRepBuilderAPI_Transform(aWire , mirrorTransform).Shape() wire = BRepBuilderAPI_MakeWire() wire.Add(aWire) mirrorWire = TopoDS.TopoDS().wire(mirrorWireShape) wire.Add(mirrorWire) # Make bottom face botFace = BRepBuilderAPI_MakeFace(wire.Wire()) if botFace.IsDone(): bottomFace = botFace.Face() # Extrude body of bottle bottle = BRepPrimAPI_MakePrism(bottomFace, gp_Vec(0, 0, myHeight)) if bottle.IsDone(): bottleShape = bottle.Shape() # Add fillets edgeExplorer = TopExp_Explorer(bottleShape, TopAbs_EDGE) mkFillet = BRepFilletAPI_MakeFillet(bottleShape) while edgeExplorer.More(): edg = edgeExplorer.Current() edge = TopoDS.TopoDS().edge(edg) mkFillet.Add(myThickness/12., edge) edgeExplorer.Next() myBody = mkFillet.Shape() # Body : Add the Neck neckLocation = gp_Pnt(0 , 0 , myHeight) neckNormal = gp().DZ() neckAx2 = gp_Ax2(neckLocation , neckNormal) myNeckRadius = myThickness / 4. myNeckHeight = myHeight / 10. MKCylinder = BRepPrimAPI_MakeCylinder(neckAx2 , myNeckRadius , myNeckHeight) myNeck = MKCylinder.Shape() print type(myBody) print type(myNeck) #myBody = BRepAlgoAPI_Fuse(myBody , myNeck) #TypeError: 'BRepAlgoAPI_Fuse' object is not iterable # Export to STEP step_export = STEPControl_Writer() step_export.Transfer(myBody,STEPControl_AsIs) step_export.Write('bottle.stp') display.DisplayColoredShape(myNeck, 'GREEN') display.DisplayColoredShape(myBody, 'RED') display.DisplayColoredShape(bottomFace, 'YELLOW') display.DisplayColoredShape(aWire, 'BLUE') start_display()
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