Thanks a lot Oscar - I will give both methods a shot and see what happens. Morten
Den 24. marts 2015 kl. 10:45 skrev Oscar Juarez <[email protected]>: > this should fix the script, it will select all the polygons that are wrong > > si = Application > epsilon = 0.00001 > > # Get PolygonArea DataArray (which is a tuple) > sel = si.Selection(0) > attr = sel.ActivePrimitive.GetICEAttributeFromName( "PolygonArea" ) > areaData = attr.DataArray > > # > # Find the indices of the bad polys > # > bad = [ x for x,y in enumerate( areaData ) if y < epsilon] > > # Select the degenerates with a string like 'cube.poly[112,114,155]' > str_indices = '%s.poly[%s]' % (sel.FullName, ','.join(str(i) for i in bad)) > si.SelectGeometryComponents(str_indices) > > On Tue, Mar 24, 2015 at 10:38 AM, Oscar Juarez < [email protected] > <mailto:[email protected]> > wrote: > > As the blog post says, degenerate polygons most of the time are zero area > > polys, a filter points with a very small distance have solved this kind of > > issues for me on the past, but since your geometry is deformed you have to > > check if it doesn't break your plotted shape or if it doesn't break other > > things. > > > > On Tue, Mar 24, 2015 at 9:44 AM, Morten Bartholdy < [email protected] > > <mailto:[email protected]> > wrote: > > > I have a scene which crashes more or less randomly and Arnold prints an > > > error that there are degenerate polygons in the scene. The geometry > > > consist > > > of 3600 simple cubes which are imported from an alembic file generated in > > > Cinema4D, so manually examining every object is not really an option. So > > > my > > > question is how to fix the degenerate polygons? I found this script: > > > http://xsisupport.com/2013/03/13/finding-degenerate-polygons-by-area/ > > > <http://xsisupport.com/2013/03/13/finding-degenerate-polygons-by-area/> , > > > but it fails with an error: > > > > > > This is what I ran: > > > > > > > > > si = Application > > > epsilon = 0.00001 > > > > > > # Get PolygonArea DataArray (which is a tuple) > > > attr = si.Selection(0).ActivePrimitive.GetICEAttributeFromName( > > > "PolygonArea" ) > > > areaData = attr.DataArray > > > > > > # > > > # Find the indices of the bad polys > > > # > > > bad = [ x for x,y in enumerate( areaData ) if y < epsilon] > > > > > > # Select the degenerates with a string like 'cube.poly[112,114,155]' > > > si.SelectGeometryComponents( 'Null2.Cube_[%s]' % ','.join(str(i) for i in > > > bad) ) > > > > > > > > > > > > > > > - and the error: > > > > > > > > > Application.SelectMembers("abc_Tiles", "", "") > > > # ERROR : 2000 - Argument 0 (SelectionList) is invalid > > > # ERROR : 2001-SELE-SelectGeometryComponents - Argument 0 is invalid > > > Application.SelectGeometryComponents("Null2.Cube_[]") > > > # ERROR : Traceback (most recent call last): > > > # File "<Script Block >", line 14, in <module> > > > # si.SelectGeometryComponents( 'Null2.Cube_[%s]' % ','.join(str(i) for i > > > in > > > bad) ) > > > # File "<COMObject Application>", line 2, in SelectGeometryComponents > > > # COM Error: The parameter is incorrect. (0x-7ff8ffa9) - [line 14] > > > > > > > > > > > > > > > > > > Line 14 is this one: si.SelectGeometryComponents( 'Null2.Cube_[%s]' % > > > ','.join(str(i) for i in bad) ) > > > > > > > > > > > > So what might be wrong with this one, and when I know which polygons are > > > bad, how can I fix them? I am thinking since they dont have an ICE tree > > > they might have no ICE PolygonArea property... > > > > > > > > > > > > > > > > > > Best > > > > > > Morten > > > > > > > > > > > >
