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542 Chapter 20: Managing Scenes and Projects
in the scene. Material assignments are lost but
mater ial IDs are preser ved.
Wa rning: This option has the potential to create an
enormous number of objects in your scene.
Note:
When working with drawings exported
from Revit, it is recommended that you do not
use this setting.
•
One Obj ect—All imported objects are combined
into a single VIZBlock. Material assignments
are lost but material IDs are preserved.
Use E x tr ude modi fier to r epresent thi ckness —When
on, objects with thick ness receive an Extrude
modifier to represent the thickness value. You can
then access the parameters of this modifier and
change the height segments, capping options, and
height value. Unavailable with the Layer, Blocks As
Node Hierarchy option.
When off, objects with thickness (and closed
capped objects) are converted directly to mesh
objects.
Create one s cene object f or each A DT
obj ect—
AutoCAD Architecture (formerly
Architectural Desktop or ADT) objects are
imported as a single object instead of being
separate d into their constituent components. This
means that if you import an ADT door object, the
door is represented as one object instead of three
(frame, step, door). Turning on this switch makes
import ing faster and the scene size smaller.
Note: This switch presents several modeling
concerns that you should be aware of:
• Material assignments f rom ADT are not
translated during the import process..
• If you want to assign materials to these objects,
use Multi/Sub-Object materials. The assigned
material IDs match the color indices specified
in ADT (red=1, w hite=7, etc.).
• Depending on the Texture Mapping option
you choose, UVW coordinates are translated
correctly.
Use scene materi al def initions—When on, 3ds Max
checks the current scene for any currently used
mate rials with the exact same name as a material
name in the incoming DWG file. If a match
is found, the impor ter does not translate the
draw ing’s material, but instead uses the material
defined in the scene.
When off, the File Link Manager always uses the
material definitions contained in the DWG file,
and will overwrite scene materials with the same
name,regardlessofwhichobjectsthematerialis
applied to. All material definitions stored in the
DWGfilearereloaded(evenwhenusingaselective
reload). If you make changes to a linked material,
in Autodesk VIZ, then reload, those changes will
be lost (if the switch is off).
Geometry Options g roup
Weld nearby vertices—Sets w hether coincident
ver tices of converted objects are welded, according
to the Weld Threshold setting. Welding smoothes
across seams and unifies normals of objects with
coincident vertices.
Weld t hr e sho ld —Sets the distance that determines
whether vertices are coincident. If the distance
between two vert ices is less than or equal to the
Weld Threshold, the vertices are welded together .
Auto-smooth adj acent fa ces—Assigns smoothing
groups (page 3–1013) according to the Smooth
Angle value. Smoothing groups determine
whether faces on an object render as a smo oth
surface or display a seam at their edges, creating a
faceted appearance.
Smooth-angl e—Controls whether smoothing
occurs b e tween two adjacent faces. If the angle
between the two face normals is less than or equal
to the smooth angle, the faces are smoothed.