8
580 Chapter 20: Managing Scenes and Projects
Materials assigned to windows should not be
completely opaque.
•Checktexturealignmentandtilingbyviewing
your textures in the viewport.
• Material files (*.
atr)
can be exported to
Lightscape. Selected materials or all the
materialsinascenecanbeexportedthisway.
Texture mapping alignment is not saved in
Material files.
Gr ouping G eometry for
Lightsca pe
These are gu idelines for grouping geometry so it
will export well to Lightscape:
• Group or attach geometry you want to come
into Lightscape as blocks. When exporting, you
can create blocks for every object and group
in the scene.
• If a light has a geometric fixture, group the
fixture with the light. This w ill allow you
to move the light and fixture together in
Lightscape.
• You can export layers by material, group,
instance, or for each object in a scene. These
options are available when exporting a
Lightscape Preparation file (*.
lp),
aLightscape
Block file (*.
blk),
or a Lightscape Layer file
(*.
lay)
.
Tip: Exporting layers by instance makes it easier
to import the solution back into 3ds Max.
Exporting Standard Lights
Lightscape lights (lum inaires) are a lways
photometric. If your 3ds Max scene uses only
photometric lights, then exporting lights has few
options. If your scene uses st andard lights, on the
other hand, you need to set options for convert ing
their settings to realistic lighting levels.
Controls for standard light export are in the
Standard Lights group of the
Lights panel (page
3–594)
on the Export Lightscape Preparation File
dialog, with additional controls in the Luminaire
Processing group.
Tip: Use cloning to create light instances whenever
possible. Instanced and referenced lights will be
exported as the same Lightscape luminaire, which
makesadjustingthelightsinLightscapemuch
easier.
The 3ds Max standard light’s color corresponds to
the Lightscape color filter.
The shadow p ar ameters Cast Shadows and Use
Ray-Traced Shadows correspond to the Lightscape
luminaire-processing parameters Cast Shadows
and Ray Trace Direct Illumination, respectively.
If the 3ds Max light is On, Lightscape w i ll not store
direct illumination for the light in the radiosity
solution.Thisallows3dsMaxtoapplythedirect
lighting after importing the solution back into
3ds Max.
You can choose to customize the Cast Shadows,
Raytrace Direct Illumination, and Store Direct