2009/8/21 Bryan Bishop <kanz...@gmail.com> > I would expect the following code to display three coordinate arrows > along the coordinate axis. But that's not what happens. Am I doing > something wrong? > > def make_coordinate_arrows(event=None): > #typical origin symbol > display.DisplayShape(make_vertex(gp_Pnt(0,0,0))) > x = gp_Trsf(); x.SetTransformation(gp_Ax3(gp_Pnt(0,0,0), gp_Dir(1,0,0))) > y = gp_Trsf(); y.SetTransformation(gp_Ax3(gp_Pnt(0,0,0), gp_Dir(0,1,0))) > z = gp_Trsf(); z.SetTransformation(gp_Ax3(gp_Pnt(0,0,0), gp_Dir(0,0,1))) > display.DisplayColoredShape(make_arrow_to(scale=3, dest=x), 'RED') > display.DisplayColoredShape(make_arrow_to(scale=3, dest=y), 'GREEN') > display.DisplayColoredShape(make_arrow_to(scale=3, dest=z), 'BLUE') > > def make_arrow_to(dest=gp_Trsf(), scale=1, text=None, color='YELLOW'): > for i in 0, 1, 2, 3: > print dest._CSFDB_Getgp_Trsfmatrix().Column(i).Coord() > if text is not None: make_text(text, > Point(dest.TranslationPart().Coord()), 6) > return BRepBuilderAPI_Transform(make_arrow_only(scale=scale, > text=text, color=color), dest).Shape() > > def make_arrow_only(origin=gp_Ax1(gp_Pnt(0,0,0), gp_Dir(0,0,1)), > scale=1, text=None, color="YELLOW"): > assert type(origin) == gp_Ax1 > body = BRepPrimAPI_MakeCylinder(0.02*scale, 0.7*scale).Shape() > head = BRepPrimAPI_MakeCone(0.1*scale,0.001,0.3*scale).Shape() > head = move_shape(head, gp_Pnt(0,0,0), gp_Pnt(0,0,0.7*scale)) > #move cone to top of arrow > return BRepAlgoAPI_Fuse(head, body).Shape() > > screenshot: > > http://adl.serveftp.org/lab/opencascade/opencascade_coordinate_axis_arrows.png > > Instead, what happens is that it appears that the y-axis coordinate > arrow is rotated 90 degrees about the z-axis, so that it is parallel > to the x-axis coordinate arrow (as you can see in the screenshot). On > the left is the solid shape mode view, and on the right is the > wireframe mode view. > > What's going on?
Hi Bryan, Can you please insert the screenshot in your email? I don't manage to open/display the png file.. > > > - Bryan > http://heybryan.org/ > 1 512 203 0507 Thomas > > > _______________________________________________ > Pythonocc-users mailing list > Pythonocc-users@gna.org > https://mail.gna.org/listinfo/pythonocc-users >
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