extract material from ReferenceWithContext

[c_hanschen]

Hello,

Short Story:

How can I find the material of the face found by ReferenceIntersector..??

Long Story:

I'm using a ray (ReferenceIntersector) to find intersecting elements, this works out great!

It returned a 'List(Of ReferenceWithContext)' that provides me information of intersection (.GetReference.GlobalPoint) and element (.GetReference.ElementId)

Even thru I used the .TargetType = FindReferenceTarget.Face, it's returns the ElementId's of the Revit elements, not the face.

An element (by example a Window) can contain many faces.

How can I find the material of the face found by ReferenceIntersector..??

This is one of the things I tryed: (type conversion from reference to face, because a face has a material)

If MyReferenceWithContext.GetReference.ElementReferenceType = ElementReferenceType.REFERENCE_TYPE_SURFACE Then

  Dim MyFace As Face = TryCast(MyReferenceWithContext.GetReference, Face)
  MsgBox(MyFace.MaterialElementId.IntegerValue.ToString)

End If

Thanks,

Chris Hanschen

The Netherlands

[FAIR59 · Accepted solution]

You get the face from the Element using the GetGeometryObjectFromReference method.

            ReferenceWithContext context              
            Element el = doc.GetElement(context.GetReference().ElementId);
            GeometryObject geoObj = el.GetGeometryObjectFromReference(context.GetReference());
                Face _face = geoObj as Face;
                if (_face != null) TaskDialog.Show("debug", doc.GetElement( _face.MaterialElementId).Name);
            

[Revitalizer]

Hi FAIR59,

the face may be part of an element inside a linked document,

so its material may not exist in the main document but in the linked one.

Revitalizer

[c_hanschen]

Thanks a lot...!!

I will try this later this week, but this seems to be what I am looking for..!!!

Chris

The Netherlands

[c_hanschen]

Hello!

New question similar te the one in this topic.

Getting ReferenceWithContext by Ray is on of the most powerful functions in the Revit API, for me it is #1!

In de Aanswers in this Topic we can read how te get the Face and the Material of the Face.

Is there a way to get the (name of) the Subcategory of this Face?

Thanks!

Chris Hanschen

LKSVDD architecten 

The Netherlands

[RPTHOMAS108]

You can get from the GraphicsStyleId if a subcategory is set for the solid in the family.

[c_hanschen]

New Question about getting info from ReferenceWithContext, in this topic we found .Face and .Material, but how to get the .Transform of/for the .Face ?

Thanks in Advance,

Chris Hanschen

LKSVDD architecten 

The Netherlands