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
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 (and
Envelope.Elements) provides the mapping between an index of a component in a
cluster with the index of the component on the Geometry. 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
