Hi Piotrek, Thanks a lot for your reply, but this is exactly what I'm trying to avoid - I'm actually re-writing a script that does something very similar, as it is damn slow. Matt Lind mentioned in a previous thread that it is possible to go from sample > vert (are you around Matt ;)), but I'm really struggling to ifnd the 'magic' to make this happen.
Cheers, Jules On Wed, Sep 12, 2012 at 9:28 PM, piotrek marczak <[email protected]>wrote: > i think you need to go bruteforce... > pretty slow code but i dont know python > > from win32com.client import constants as c > app = Application > oGeo = > app.Selection(0).SubComponent.Parent3DObject.ActivePrimitive.GetGeometry3(0,c.siConstructionModeSecondaryShape) > # arguments needed otherwise crash > indarray = [0] * oGeo.Samples.Count > for point in oGeo.Points: > for ptsample in point.Samples: > indarray[ ptsample.Index ] = point.Index > cmparray = [0] * oGeo.Points.Count > outIndexArray = [] > for sample in app.Selection(0).SubComponent.ElementArray: > if not cmparray[ indarray[ sample ] ]: > outIndexArray.append( indarray[ sample ] ) > cmparray[ indarray[ sample ] ] = 1 > > for i in outIndexArray: > Application.LogMessage ( i ) > > *From:* Jules Stevenson <[email protected]> > *Sent:* Wednesday, September 12, 2012 7:58 PM > *To:* [email protected] > *Subject:* Re: Python, Returning the vertex index from a sample cluster > > Apologies, hit send a little early there.... > > for sample in samples.SubComponent.ComponentCollection: > log(uvs.FindIndices([sample.Index])) > log (sample.Index) > log(elements.FindIndex(sample.Index) > > The 'elements' clusterElementCollection seems to contain the indices to > the samples, not the mapping to the geometry, which goes against what is > syas in the docs: > > "The ClusterElementCollection returned by > Cluster.Elements<http://download.autodesk.com/global/docs/softimage2013/en_us/sdkguide/si_om/Cluster.Elements.html>(and > Envelope.Elements<http://download.autodesk.com/global/docs/softimage2013/en_us/sdkguide/si_om/Envelope.Elements.html>) > provides the mapping between an index of a component in a cluster with the > index of the component on the > Geometry<http://download.autodesk.com/global/docs/softimage2013/en_us/sdkguide/si_om/Geometry.html>. > For example index 10 on a polygon Cluster might refer to Polygon 45 on the > geometry, in which case ClusterElementCollection.Item(10) has the value 45. > This data is read-only." > > This is not what I get at all, for a start the cluster.Elements.Count > returns approximatly 80k, which makes no sense as a geometry index since > there are only about 20k points. Clearly this is an array of the sample > indices (4 per vert). Soooooooo, how do I get the point / facet / polygon > ID from a sample? > > Any help much appreciated, this is driving me nuts. > > Cheers, > > Jules >
