Patrick, You should *not* refer to the OpenCascade API doxygen documentation. There are many (small) differences between the C++ API and the python wrapper that could confuse you in using pythonOCC.
The *only* official documentation for the pythonOCC API can be found here: http://api.pythonocc.org Regards, Thomas 2010/5/13 Patrick Janssen <patr...@janssen.name> > Hi Jelle, > > Thanks - > So the make_edge function wraps BRepBuilderAPI_MakeEdge > And looking at the source of make_edge, I see that you need to use the > Edge() method to get the edge > So to do it the longer way round again: > > def line3(): > > ''' Test a line segment''' > display, start_display, add_menu, add_function_to_menu = init_display() > > from OCC.gp import gp_Pnt > from OCC.BRepBuilderAPI import BRepBuilderAPI_MakeEdge > p1 = gp_Pnt(0,0,0) > p2 = gp_Pnt(9,9,0) > my_line = BRepBuilderAPI_MakeEdge(p1, p2).Edge() > > display.DisplayShape(my_line) > > display.View_Iso() > display.FitAll() > start_display() > > So there is no need to call he Build() method? > That method confused me as well - what does it do? (see my first example) > > :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: > Patrick > > > > On 13 May 2010 14:54, Jelle Feringa <jelleferi...@gmail.com> wrote: > >> Hi Patrick, >> >> The API can be a bit daunting indeed. >> However, most topology constructors can accept its arguments in quite a >> few ways. >> For example; make_edge accepts a (gp_Pnt, gp_Lin), but (gp_Pnt, gp_Pnt) is >> fine too. >> ( so can be done in 5 lines too ;') >> >> from OCC.Display.SimpleGui import * >> display, start_display, add_menu, add_function_to_menu = init_display() >> from OCC.Utils.Construct import make_edge >> display.DisplayShape(make_edge(gp_Pnt(), gp_Pnt(1,1,0))) >> start_display() >> >> -jelle >> >> See the doxygen documentation of OCC: >> >> Standard_EXPORT BRepBuilderAPI_MakeEdge () Standard_EXPORT >> BRepBuilderAPI_MakeEdge (const TopoDS_Vertex &V1, const TopoDS_Vertex >> &V2) Standard_EXPORT BRepBuilderAPI_MakeEdge (const gp_Pnt &P1, const >> gp_Pnt &P2) Standard_EXPORT BRepBuilderAPI_MakeEdge (const gp_Lin >> &L)Standard_EXPORT >> BRepBuilderAPI_MakeEdge (const gp_Lin &L, const Standard_Real p1, const >> Standard_Real p2) Standard_EXPORT BRepBuilderAPI_MakeEdge (const gp_Lin >> &L, const gp_Pnt &P1, const gp_Pnt &P2) Standard_EXPORT >> BRepBuilderAPI_MakeEdge (const gp_Lin &L, const TopoDS_Vertex &V1, const >> TopoDS_Vertex &V2) Standard_EXPORT BRepBuilderAPI_MakeEdge (const >> gp_Circ &L) Standard_EXPORT BRepBuilderAPI_MakeEdge (const gp_Circ &L, >> const Standard_Real p1, const Standard_Real p2) Standard_EXPORT >> BRepBuilderAPI_MakeEdge (const gp_Circ &L, const gp_Pnt &P1, const gp_Pnt >> &P2) Standard_EXPORT BRepBuilderAPI_MakeEdge (const gp_Circ &L, const >> TopoDS_Vertex &V1, const TopoDS_Vertex &V2) Standard_EXPORT >> BRepBuilderAPI_MakeEdge (const gp_Elips &L) Standard_EXPORT >> BRepBuilderAPI_MakeEdge (const gp_Elips &L, const Standard_Real p1, const >> Standard_Real p2) Standard_EXPORT BRepBuilderAPI_MakeEdge (const >> gp_Elips &L, const gp_Pnt &P1, const gp_Pnt &P2) Standard_EXPORT >> BRepBuilderAPI_MakeEdge (const gp_Elips &L, const TopoDS_Vertex &V1, >> const TopoDS_Vertex &V2) Standard_EXPORT BRepBuilderAPI_MakeEdge (const >> gp_Hypr &L) Standard_EXPORT BRepBuilderAPI_MakeEdge (const gp_Hypr &L, >> const Standard_Real p1, const Standard_Real p2) Standard_EXPORT >> BRepBuilderAPI_MakeEdge (const gp_Hypr &L, const gp_Pnt &P1, const gp_Pnt >> &P2) Standard_EXPORT BRepBuilderAPI_MakeEdge (const gp_Hypr &L, const >> TopoDS_Vertex &V1, const TopoDS_Vertex &V2) Standard_EXPORT >> BRepBuilderAPI_MakeEdge (const gp_Parab &L) Standard_EXPORT >> BRepBuilderAPI_MakeEdge (const gp_Parab &L, const Standard_Real p1, const >> Standard_Real p2) Standard_EXPORT BRepBuilderAPI_MakeEdge (const >> gp_Parab &L, const gp_Pnt &P1, const gp_Pnt &P2) Standard_EXPORT >> BRepBuilderAPI_MakeEdge (const gp_Parab &L, const TopoDS_Vertex &V1, >> const TopoDS_Vertex &V2) Standard_EXPORT BRepBuilderAPI_MakeEdge (const >> Handle(Geom_Curve)&L) Standard_EXPORT BRepBuilderAPI_MakeEdge (const >> Handle(Geom_Curve)&L, const Standard_Real p1, const Standard_Real p2) >> Standard_EXPORT BRepBuilderAPI_MakeEdge (const Handle(Geom_Curve)&L, >> const gp_Pnt &P1, const gp_Pnt &P2) Standard_EXPORT >> BRepBuilderAPI_MakeEdge (const Handle(Geom_Curve)&L, const TopoDS_Vertex >> &V1, const TopoDS_Vertex &V2) Standard_EXPORT BRepBuilderAPI_MakeEdge (const >> Handle(Geom_Curve)&L, const gp_Pnt &P1, const gp_Pnt &P2, const >> Standard_Real p1, const Standard_Real p2) Standard_EXPORT >> BRepBuilderAPI_MakeEdge (const Handle(Geom_Curve)&L, const TopoDS_Vertex >> &V1, const TopoDS_Vertex &V2, const Standard_Real p1, const >> Standard_Real p2) Standard_EXPORT BRepBuilderAPI_MakeEdge (const >> Handle(Geom2d_Curve)&L, const Handle(Geom_Surface)&S) Standard_EXPORT >> BRepBuilderAPI_MakeEdge (const Handle(Geom2d_Curve)&L, const >> Handle(Geom_Surface)&S, const Standard_Real p1, const Standard_Real p2) >> Standard_EXPORT BRepBuilderAPI_MakeEdge (const Handle(Geom2d_Curve)&L, >> const Handle(Geom_Surface)&S, const gp_Pnt &P1, const gp_Pnt &P2) >> Standard_EXPORT BRepBuilderAPI_MakeEdge (const Handle(Geom2d_Curve)&L, >> const Handle(Geom_Surface)&S, const TopoDS_Vertex &V1, const >> TopoDS_Vertex &V2) Standard_EXPORT BRepBuilderAPI_MakeEdge (const >> Handle(Geom2d_Curve)&L, const Handle(Geom_Surface)&S, const gp_Pnt &P1, >> const gp_Pnt &P2, const Standard_Real p1, const Standard_Real p2) >> Standard_EXPORT BRepBuilderAPI_MakeEdge (const Handle(Geom2d_Curve)&L, >> const Handle(Geom_Surface)&S, const TopoDS_Vertex &V1, const >> TopoDS_Vertex &V2, const Standard_Real p1, const Standard_Real p2) >> >> >> >> On May 13, 2010, at 8:44 AM, Patrick Janssen wrote: >> >> Hi Thomas, >> >> Thanks for the quick reply - and thanks for the hard work on wrapping occ >> - I think it is going to be really useful for my work. >> >> By simple, I was thinking of higher level APIs - like you get with boxes >> and cylinders (BRepPrimAPI_MakeBox, BRepPrimAPI_MakeCylinder). I have come >> across GC_MakeSegment, but am not sure how to use it - I am still struggling >> with the fundamental concepts, especially working with these handles. I was >> trying this, but it gives an error: >> >> def line2(): >> ''' Test a line segment''' >> display, start_display, add_menu, add_function_to_menu = >> init_display() >> >> from OCC.gp import gp_Pnt >> from OCC.GC import GC_MakeSegment >> from OCC.BRepBuilderAPI import BRepBuilderAPI_MakeEdge >> p1 = gp_Pnt(0,0,0) >> p2 = gp_Pnt(9,9,0) >> my_line = GC_MakeSegment(p1, p2).Value() >> my_line = BRepBuilderAPI_MakeEdge(my_line) >> my_line.Build() >> my_line = my_line.Shape() >> display.DisplayShape(my_line) >> >> display.View_Iso() >> display.FitAll() >> start_display() >> >> >> :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: >> Patrick >> >> On 13 May 2010 14:11, Thomas Paviot <tpav...@gmail.com> wrote: >> >>> 2010/5/13 Patrick Janssen <patr...@janssen.name> >>> >>> I am just getting started, and have been looking at some of the exampls >>>> etc... So to draw a line, you would do this: >>>> >>>> def test5(): >>>> ''' Test creating a line segment'' >>>> display, start_display, add_menu, add_function_to_menu = >>>> init_display() >>>> >>>> from OCC.gp import gp_Pnt, gp_Dir >>>> from OCC.Geom import Geom_Line >>>> from OCC.BRepBuilderAPI import BRepBuilderAPI_MakeEdge >>>> p1 = gp_Pnt(0,0,0) >>>> line_dir = gp_Dir(1,1,0) >>>> my_line = Geom_Line(p1, line_dir).Lin() >>>> my_line = BRepBuilderAPI_MakeEdge(my_line) >>>> my_line.Build() >>>> my_line = my_line.Shape() >>>> display.DisplayShape(my_line) >>>> >>>> display.View_Iso() >>>> display.FitAll() >>>> start_display() >>>> >>>> >>>> Is there a simpler way? >>>> :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: >>>> Patrick >>>> >>>> >>> Hi Patrick, >>> >>> In only 14 lines of python code, you manage to display a line in a 3D >>> window. I think it's not bad! What do you mean exactly with 'simpler'? Do >>> you mean 'less lines'? Whatever the alternative solution could be, you will >>> always have to : >>> * import python modules/packages, >>> * define two points (or a point and a direction), >>> * create the line from these two points, >>> * send the line to the renderer. >>> >>> You can use for instance high level wrappers to generate the edges from >>> the line: >>> >>> from OCC.Display.SimpleGui import * >>> display, start_display, add_menu, add_function_to_menu = init_display() >>> from OCC.gp import gp_Pnt, gp_Dir >>> from OCC.Geom import Geom_Line >>> from OCC.Utils.Construct import make_edge >>> >>> p1 = gp_Pnt(0,0,0) >>> line_dir = gp_Dir(1,1,0) >>> my_line = Geom_Line(p1, line_dir).Lin() >>> >>> display.DisplayShape(make_edge(my_line)) >>> >>> start_display() >>> >>> This sample is 11 lines, I would not say it's simpler but smaller. >>> >>> Thomas >>> >>> _______________________________________________ >>> Pythonocc-users mailing list >>> Pythonocc-users@gna.org >>> https://mail.gna.org/listinfo/pythonocc-users >>> >>> >> _______________________________________________ >> Pythonocc-users mailing list >> Pythonocc-users@gna.org >> https://mail.gna.org/listinfo/pythonocc-users >> >> >> > > _______________________________________________ > Pythonocc-users mailing list > Pythonocc-users@gna.org > https://mail.gna.org/listinfo/pythonocc-users > >
_______________________________________________ Pythonocc-users mailing list Pythonocc-users@gna.org https://mail.gna.org/listinfo/pythonocc-users
