hi all,
i am pythonocc newbie, and my question may seem stupid.
i try to modify a shape in the InteractiveVeiwer example from the pythonocc
samples, after it has been displayed using display.DisplayShape(shape).
the following code creates four edges of a rectangle in the plane z=0, and one
of the edges should be translated to z=10:
p1=gp_Pnt(0,0,0);
p2=gp_Pnt(0,1,0);
p3=gp_Pnt(1,1,0);
p4=gp_Pnt(1,0,0);
e1=BRepBuilderAPI_MakeEdge(p1,p2).Edge()
e2=BRepBuilderAPI_MakeEdge(p2,p3).Edge()
e3=BRepBuilderAPI_MakeEdge(p3,p4).Edge()
e4=BRepBuilderAPI_MakeEdge(p4,p1).Edge()
trsf=gp_Trsf();
trsf.SetTranslation(gp_Vec(0,0,10));
display.DisplayShape(e1);
display.DisplayShape(e2);
display.DisplayShape(e3);
display.DisplayShape(e4);
e1.Move(TopLoc_Location(trsf));
this works like a charm, if i put the e1.Move(...) command before the
display.DisplayShape(...) commands. but not in the order above.
how can i modify what is displayed, after a shape has already been displayed?
do i have to remove the modified shape, remove it from the display, and
create+display the modified shape again? then please tell me how to remove a
shape from the display. GraphicsCanva3D has the DisplayShape() function, but
except for EraseAll() there is no function to remove a singe shape?
when answering please consider that i don't understand the pythonocc concepts
in great detail. please assume that i am as stupid as my question ;)
Willy
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