Thanks Thomas, that works ! The problem is still the performances of the Viewport ( Zoom Pan Rotate). They are as slow as the first CADs at the begining of the 80s. On the same PC (win XP), Catia V5 can handle large models, other CADs read the same file of 20 000 pts and zoom pan rotate like if it was a single cube. So I am wondering what is slowing down the application like that. Creating the vertex via BRepBuilderAPI_MakeVertex seems to put the system always ready for preselection. Could it be the reason?
Thanks F. On Thu, Dec 16, 2010 at 1:10 AM, Thomas Paviot <tpav...@gmail.com> wrote: > Hi Henry, > > Try this one, with the third line of your sample code modified as follows: > > pt = gp_Pnt ( coord_x, coord_y, coord_z ) > pt_brep = BRepBuilderAPI_MakeVertex ( pt ) > liste.append ( pt_brep.Shape() ) # the Shape() method returns a > TopoDS_Shape instance > > > display.DisplayShape( liste , update=False) > > Thomas > > 2010/12/16 Henry Bonette <freeminde...@gmail.com> > > Thanks much for your answer! >> I don 't manage to pass the vertex_list to the display.DisplayShape, I >> get following error message ( I gave a look in the OCCViewer.py and AIS.py >> but since I am new in Python I couldn t solve the prob ) >> >> ERROR: >> Traceback (most recent call last): >> File "D:\DATA_PYTHON_D\PYTHONOCC\mon_test_5.py", line 102, in montest >> display.DisplayShape( liste , update=True ) >> File "C:\Python26\lib\site-packages\OCC\Display\OCCViewer.py", line 313, >> in DisplayShape >> shape_to_display = OCC.AIS.AIS_Shape(shape) >> File "C:\Python26\lib\site-packages\OCC\AIS.py", line 6192, in __init__ >> _AIS.AIS_Shape_swiginit(self,_AIS.new_AIS_Shape(*args)) >> TypeError: in method 'new_AIS_Shape', argument 1 of type 'TopoDS_Shape >> const &' >> ------- >> >> I tried 2 codes as follows : >> ------------- >> CODE1 : >> >> pt = gp_Pnt ( coord_x, coord_y, coord_z ) >> pt_brep = BRepBuilderAPI_MakeVertex ( pt ) >> liste.append ( pt_brep ) >> >> display.DisplayShape( liste , update=False) >> >> CODE 2: >> >> pt = gp_Pnt ( coord_x, coord_y, coord_z ) >> vertx = OCC.BRepBuilderAPI.BRepBuilderAPI_MakeVertex(pt) >> aisShape = OCC.AIS.AIS_Shape(vertx.Vertex()) >> liste.append ( aisShape ) >> >> display.DisplayShape( liste , update=False ) >> --------------- >> >> I' m running PythonOCC 0.4 on win XP with the included OpenCASCADE / >> Python 2.6 >> >> Thanks for any hint! >> Francois >> >> >> ------------------------------------------------------------------------------- >> On Mon, Dec 13, 2010 at 6:42 PM, jelle feringa >> <jelleferi...@gmail.com>wrote: >> >>> Hi, >>> >>> You are updating the viewer for each vertex, which is catastrophic for >>> performance. >>> First build your vertices and give the list as an argument to >>> display.DisplayShape( your_vertex_list_here ). >>> That should help. >>> >>> -jelle >>> >>> On Mon, Dec 13, 2010 at 5:13 PM, Henry Bonette <freeminde...@gmail.com >>> > wrote: >>> >>>> Hello the community, >>>> >>>> I am new here and started a project, whose purpose is first to deal with >>>> a cloud of points. >>>> 100 000 points at least is quite usual for measuring systems. >>>> Also the points should be selectable (even if it is only in a defined or >>>> selected area). >>>> >>>> Using following code, the performances in the viewer like usual >>>> ROTATE/ZOOM/PAN are far from being acceptable, even with 20 000 points. >>>> I am wondering if it is due to the BREP representation I used here ? >>>> >>>> So my question is : >>>> Do I need this Brep fonction to have selectable points ? >>>> Is there any way to have acceptable ROTATE ZOOM PAN for large points >>>> model ? >>>> ( Note I read I can pass a the list of points "liste" in the >>>> display.DisplayShape(...) but I didn t found out how ... but this will fast >>>> up the first display I guess, not ROTATE ZOOM PAN) >>>> >>>> Thanks for any help >>>> Francois >>>> >>>> -------------------------- >>>> >>>> CODE: >>>> ... >>>> pt = gp_Pnt ( coord_x, coord_y, coord_z ) >>>> liste.append ( pt ) >>>> >>>> for ppi in liste : >>>> display.DisplayShape( BRepBuilderAPI_MakeVertex (ppi).Shape(), >>>> update=False ) >>>> >>>> display.FitAll ( ) >>>> ... >>>> --------------------------- >>>> >>>> _______________________________________________ >>>> 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 > >
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