Re: Last Quesa is very slow

[James W. W. <os...@jw...>]

On Nov 3, 2007, at 5:35 AM, Sauro Agostini wrote:

>> Where exactly is the custom attribute?  Is it a vertex attribute, or
>> does it belong to the attribute set of the geometry, or does it
>> belong to a free-floating attribute set?
>
>
> I'm sorry for taking so long to reply, but I were out of the office
> for an expo.
>
> The custom attribute is added to the geometry similar to the follow
> line of code
>
> Q3AttributeSet_Add 
> (myPolyData.polygonAttrubuteSet,customAttrubuteTipe,customAttribute)
>
> Thanks in advance,

OK, you have a custom attribute in the attribute set of a Polygon  
geometry.  I'm not sure what you want to happen to it, but I can tell  
you what does happen.

RemoveExtraReferences : no change

DecomposeGeometries : Each Polygon is replaced by one TriMesh with  
the same attribute set

LowerAttributesToGeometries : Other attributes might be added to the  
attribute set, but the custom attribute should not be changed.

FlattenHierarchy : No change.

OptimizeTriMeshes: A TriMesh may be replaced by another TriMesh with  
the same attribute set.

MergeTriMeshes: Some TriMeshes may be merged into a single TriMesh.   
The attribute set of the first TriMesh in the list being merged  
becomes the attribute set of the merged TriMesh.