Can't get WpfMaterial / XbimColour to work on a IfcRepresentationItem

[mwymwy]

Hi everybody,

I was taking a look at how selection does work, in order to understand how switching material is done in XbimExplorer.

The goal I'm trying to achieve is to be able to set whatever material I want to whatever IfcRepresentationItem I want.

I guess I'm something like mid-way to achieve something like that, but no matter what I try, I can't figure what is missing in my code.

Here what I thought would let me get the result I want, but in fact it doesn't :

`
WpfMaterial mat = new WpfMaterial();
mat.CreateMaterial(new XbimColour("RED", 1,0,0,0.3));

var ifcSiteRepr = ifcSite.Representation.Representations.FirstOrDefault();
var m = WpfMeshGeometry3D.GetGeometry(ifcSiteRepr, Collection[ifcSiteRepr.Model].Transform, mat);
`

Problem is : I don't now what to do after.
When selecting an item in XbimExplorer, m is then passed to the "content" property of an ObservableMeshVisual3D, but I really didn't understood that part.

Hope someone can tell me the right way ?