9

UVW Mapping on Revit Elements 455
Scene Material Definitions or Use Scene Material
Assignments on Reload options.
Pr ocedur es
To retain materia l settings made in 3ds Max during
areload:
1.
On the Files panel of the File Link Manager,
mak e sure the Show Reload Options switch is
active.
2. SelecttheupdatedDWGfilefromtheLinked
Files list and click Reload.
3. Open the Advanced tab and turn on Use Scene
Material Definitions and then click OK.
The updated DWG file is reloaded and Revit
materials retain the sett ing changes you made
in 3ds Max.
AccuRender M ater ia ls
AccuRender materials consist of one or more base
materials. For each base material you can set
attributes such as color, reflectivity, transparency,
index of refraction, bump maps , and ima ge maps.
The Procedures list displays the simple materials
that combine to form your final material definition
and the rules for combining them. For simple
materials, there is only one item in the list: Base.
For complex materials, a tree indicates how the
components combine. For example, the marble
procedure consists of a Base m aterial and a Vein
material. While the Base m aterial is considered
a ’procedure’, it is translated because it’s at the
bottom level of the mater ial. The Vein material is
ignored.
AccuRender materials that are applied to objects
in the Revit drawing are translated when you link
or import the drawing to 3ds Max. If the texture
used for the material is a digital bitmap like a BMP
or JPG file, the texture will be included with the
mater ial.
However, if the texture being used is one of the
Procedures, the texture is not translated when the
drawingisbroughtinto3dsMax.Inthesecases,
yo u will see only the diffuse color.
See also
Material Editor, Materials, and Maps (page 2–1395)
UVW M appi ng on R ev it E lements
An important consideration in how many
materialsrenderishowtheyare“mapped”to
thesurfacesoftheobjectstheyareassignedto.
This is especially important for materials t hat use
bitmaps (page 3–917) to define the diffuse color of
a m aterial, or the bump and cutout special effects.
As an example, you may have scanned a picture
of wood grain for use in a material, but when
the material is applied to an object, how large
should the image of the wood grain be? Which
way do you want the grain to run, and how do you
want the grain to wrap around the corners of a
three-dimensional object?
How two-dimensional maps are applied to
three-dimensional surfaces is repre sented by
mapping coordinates (page 3–967),whichare
stored as U VW coordinates (page 3–1028).Revit
assignsUVWcoordinatestoobjectcomponents,
so in cases where mapping coordinates are
important to the rendered appearance of an object,
3ds Max translates these coordinates and stores
them in the object mesh that is displayed and
rendered in the 3ds Max scene.
Using Revit Materials on 3ds Max
Geometr y
After you’ve linked a DWG file that has been
exported from Revit, you may find that some of the