2010/2/16 Willy Hertz <willy.he...@yahoo.com> > 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 > ;) >
Hi Willy, Welcome to this list. Feel free to ask any question, even if you didn't RTFM (actually, there's no FM!). I suggest you have a look at the 'animation' sample in the /samples/Level1/animation folder. The source code of this script is available at http://svn.gna.org/viewcvs/pythonocc/trunk/src/samples/Level1/Animation/animation.py?rev=781&view=markup I think it does what you want to achieve. > > Willy > Best Regards, Thomas
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