9

File Link Manager Utility 427
Blocks as Node Hierarchy derivation methods,
multiple material IDs are read and editable as
M ulti/Sub-Object materials in the Material Editor.
3dsMaxreadseachfaceofalinkedACISsolidto
determineifitcontainsanymaterialIDsthatitcan
read. If more than one material ID is read from a
solid, each material ID is translated to a material
ID on file link and re-assigned to the object.
The program creates Multi/Sub-Object materials
only if more than one material ID is found; if
an ACIS solid contains only one material ID, a
standard architectural material is created and
assigned instead.
Note: 3dsMaxfirstevaluatesthelinkedfileto
find any Revit material IDs, and t hen looks for
AutoCAD material IDs.
Note: If you link a DWG file with the Layer , Blocks
as Node Hierarchy, Split by Materials” derivation
method, the solid is not split to reflect its ma terials
set.
Multi/Sub-Object Material Naming
In earlier versions, 3ds Max read the material
ID information from the color ID of the
AutoCAD/Revit material ID’s face. Now, 3ds Max
creates a Multi/Sub-Object material for every
translated per face material ID each time you link
a DWG file that contains an AutoCAD/Revit solid.
When the program finds multiple materials
assigned to an ACIS solid and creates a
Multi/Sub-Object material, it consists of instances
of standard architectural scene materials.
Naming Conflic ts
Material IDs are unique within one DWG file.
However,thesamematerialIDmayappearin
two different files, such as Basic Wal l: Generic –
12” Masonry. If a naming conflict arises when
two scenes are merged, the program applies the
last loaded material used in the Multi/Sub-Object
material.
For example, if file1.dwg and file2.dwg both
contain a material named Brick, and they are both
linked, the Brick material u sed is the one from the
second fi le (file2.dwg).
Or, if file1.dwg contains a material named Brick
that is internally stored as material ID 222 and
file2.dwg contains a different material stored as ID
222, the material used in the scene when they are
linked is file2.dwg’s material.
If two solids share the same material I D, they will
share the same Multi/Sub-Object material.
Non-AutoCAD Materials
3ds Max does not link non-AutoCAD material
IDs. The only non-AutoCAD Architecture IDs it
preserves are the Color IDs.
ACIS S oli ds
DWG ACIS solids li nk as s olid objects in 3ds Max.
You cannot separate faces of an ACIS solid object
unless you apply the Edit Poly (page 1–640) or Edit
Mesh (page 1–634) modifier.
Tip: You can access the material ID v alue assigned
to this face with the Edit Poly modifier.
ACIS Solids and Materials
ACIS solid materials display in the Material Editor
along with any other linked material.
WhenyouapplyabitmapmaterialtoanACIS
solid, it is applied to every side of the object. For
example, a brick bitmap material that you apply to
a wall object appears on both sides and a ll edges of
the wall. If you want to apply a material to each
face ID, you can u se a multi/sub object material so
you can assign sub-materials to each face ID.
When you link ACIS solids into 3ds Max,
procedural textures are not supported, only