Formit: The mystery of groups and materials

Formit is an excellent tool for conceptual design and fits completely a BIM workflow: Formit models can be translated to Revit models, we can convert Revit families to Formit content and when the Formit scene is converted to a Revit model this content can be converted back to the original Revit families.

But now for something completely different.
One of the important strategies when sketching in Formit is the use of groups to organize objects.

But what happens if we want to apply materials to elements within a group?
Let’s start with this situation: stair and floor are both groups.

Formit-Groups-Original

When I apply the same material to both groups, the result is different:
the stair group will use the material, but the floor is not….

 

Formit-Groups-Materials applied

The reason is simple: when you apply a material to a group, Formit will look in the group for all objects with no material applied. These objects will get the group material. In our example this is the case for the stairs.

Objects within the group that have a material applied on object level are will not inherit the group material. In our scene the solid in the floor group has already a material applied, so this will not use the group material.

By the way, you can check the group material in it’s properties:

Formit-Groups-Properties

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