Hi Joey
In example 1, oColl(0) is a CollectionItem, whereas in example 2,
oSelList(1) is a PolygonFace.
A CollectionItem object does not have an Edges property.
I've added some LogMessage calls to your examples, and fixed example 1
to work.
//1
SelectObj("cube", null, true);
var oColl = XSIFactory.CreateActiveXObject("XSI.Collection")
oColl.AddItems(Selection(0).ActivePrimitive.Geometry.Facets);
LogMessage( classname( oColl(0) ) );
LogMessage( classname( oColl(0).Subcomponent ) );
LogMessage ( oColl(0).Subcomponent.ComponentCollection.Count );
LogMessage ( oColl(0).Subcomponent.ComponentCollection(0) );
SelectGeometryComponents(oColl(1).Subcomponent.ComponentCollection(0).Ed
ges);
//2
SelectObj("cube", null, true);
var oSelList = Selection(0).ActivePrimitive.Geometry.Facets;
LogMessage( classname( oSelList(1) ) );
SelectGeometryComponents(oSelList(1).Edges);
An XSICollection object is not the same as a FacetCollection object (or
a PolygonFaceCollection object). They are distinct types of collections
with different properties, methods, and implementation.
-----Original Message-----
From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf
Of Joey Ponthieux
Sent: April 13, 2006 6:35 PM
To: XSI(at)Softimage.COM
Subject: Re: OM scripting
Stephen,
Thanks, this worked perfecly for my oFilter.Subset input,
however I am now more confused than ever. I have two pieces of code that
are supposed to select all the edges of a particular facet, one works,
one doesnt, they are:
//1.DOES NOT WORK
SelectObj("cube", null, true);
var oColl = XSIFactory.CreateActiveXObject("XSI.Collection")
oColl.AddItems(Selection(0).ActivePrimitive.Geometry.Facets);
SelectGeometryComponents(oColl(0).Edges);
//2.WORKS
SelectObj("cube", null, true);
var oSelList = Selection(0).ActivePrimitive.Geometry.Facets;
SelectGeometryComponents(oSelList(1).Edges);
If Selection(0).ActivePrimitive.Geometry.Facets is a facet collection,
how does it differ from an XSI Collection? In this case it would seem
that the XSI Collection is being passed to SelectGeometryComponents in
example 1 and a Facet Collection is being sent to
SelectGeometryComponents in example 2. Why would the XSI Collection work
in the case of filter.subset but not here?
--
Joey Ponthieux
NCI Information Systems Inc.
NASA Langley Research Center
____________________________________________________________
Opinions stated here-in are strictly those of the author and do not
represent the opinions of NASA or any other party.
Stephen Blair wrote:
>
> Hi Joey
>
> Instead of messing about with the selection, just get all the edges
into
> a collection and then filter the collection.
>
> Here's an example, but with polygons and the Quad filter:
>
> var oCone = ActiveSceneRoot.AddGeometry("Cone","MeshSurface");
> var oPolygons = oCone.ActivePrimitive.Geometry.Polygons;
>
> var oColl = XSIFactory.CreateActiveXObject("XSI.Collection");
> oColl.AddItems(oPolygons);
> LogMessage( oColl.Count );
>
> var oFilter = Application.Filters("Quad");
> var oQuads = oFilter.Subset( oColl );
> LogMessage( oQuads.Count );
>
> Also
>
> Application.Selection is a Selection object
> Selection(0).ActivePrimitive.Geometry.Segments is a SegmentCollection
>
> that's why you get the error
>
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