8
996 Glossary
files are easy to publish and view on the Web using
the Autodesk DWF Viewer.
3D Map
A pattern generated procedurally in three
dimensions. A 3D map does not require mapping
coordinates in order to render. However, a 3D
map will appear in viewports only if the object to
whichitisappliedhasmappingcoordinates.See
3D Maps (p age 2–1472)
3DS and PR J Files
3DS is the 3D Studio R4 mesh-file format and PRJ
is the 3D Studio R 4 (for DOS) project-file format.
You can import both these types of files into the
software, as well as D XF and SHP files. You can
export 3DS files a nd DXF files.
See also
Importing 3DS Fi les (page 3–531)
Importing PRJ Files (page 3–532)
Export ing to 3DS (page 3–533)
Impor ting P RJ and 3DS Files
When you import a 3DS file, you get the following:
• B ackgrounds (solid, gradient, and bitmap).
• Fog, Layered Fog, and Distance Cue.
•Ambientlightlevel.
• Subtrac tive transparency is converted to "Filter"
transparency, and the filter color is set equal to
the diffuse color.
• Transparency fa l loff settings.
• All map channels that are enabled. Map
channelsthatareturnedoffinthe.
3ds
file do
not import.
• All map parameters, including U V t r ansforms,
Negative, Mirror, and Rotation. Some Map
Parameters such as Blur, Luma, and RGB and
Alpha work much differently. These values are
converted to new values that produce a similar
effect.
• Mask bitmaps are imported as a mask texture.
•WhenmaterialswithbothTexture1and
Texture 2 are imported, a composite texture is
createdandaddedtotheStandardmaterial’s
Diffuse channel.
• Reflection maps, auto-cubics and mirrors.
• A utomatic reflection map Nth frame and Map
Size settings.
• SXP t r anslation for Marble and Noise materials.
• 3 DS/DO S IK joint parameters.
• 3DSurfer patch data.
The following information is
not
imported from
a3DSfile:
•Morphkeys
• Keyf ramer instances
• Map channels that are turned off
•Custom.CUB-formatcubicmaps
• D ecal transparency using the RGB color of the
upper-left pixel of the map
WhenyouimportaPRJfile,yougetallofthe
above, plus Shapes.
Expor ting to 3DS Files
The following rules determine what is exported
to the 3DS format:
• Position, Rotation, and Sc ale animation. If the
controller is a TCB controller , the TCB, Ease
In, and Ease Out values are also saved. If the
controllerisanyothertypeofkeycontroller,the
keys are saved but the tangent information is
lost. If the controller is not a key controller , only
the object’s transformation at f rame 0 is saved.