maya component id data
<p>Does anyone know how to obtain the data in maya called the component ID of the vertices.</p>

<p>I know how to get the vert number but the component ID on the vert is something that changes as the model has been changed. </p>

<p>It seems that there is data in the vertex but just can't find any command to extract it. Any help would be helpful. </p>

<p>I even tried using the maya api but this also just seem to give me the vertices index number and not the actual ID (which is not a sequence as the vertices indexes)</p>

<p>Thanks</p>

<p>Maya components do not have persistent identities; the 'vertex id' is just the index of one entry in the vertex table (or the tables for faces, normals, etc).  That's why its so easy to mess up a model with construction history if you go 'upstream' and change things that affect the model's component count or topology.</p>

<p>You can attach persistent data to a vertex using the <a href="http://download.autodesk.com/global/docs/maya2014/en_us/index.html?url=files/Blind_data_What_is_blind_data_.htm,topicNumber=d30e168928" rel="nofollow">PolyBlindData</a> system, which attaches arbitrary info to faces, vertices or edges. You could attach data to a particular vertex and the data would <em>probably</em> survive, though the same considerations which can mess up things like vert colors or UVs when construction history changes upstream will also mess with blind data.</p>

python maya