Autodesk LIGHTSCAPE, Manual

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Exporting from 3D Studio MAX or 3D Studio VIZ to Lightscape
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Material
Select this option to create a layer for each material.
Surfaces are assigned to layers based on their
material.
Exporting Lights
When exporting lights from 3D Studio MAX or 3D
Studio VIZ, the following conversions occur:
• The light’s color in 3D Studio MAX or 3D Studio
VIZ is converted to a corresponding light filter in
Lightscape.
• Circular and rectangular spotlights are converted
to standard circular spotlights.
• The “no shadow casting” flag is preserved.
• The light intensity multiplier in 3D Studio MAX or
3D Studio VIZ is used to scale the luminous intensi-
ty.
Use the light export options in the Export dialog to
determine how lights are converted.
Maximum Light Intensity Scale
Enable this option to convert relative light intensities
in 3D Studio MAX or 3D Studio VIZ files to physical
units in Lightscape. By default, the scale ranges from
0 to 2500 cd (about the intensity of a 100-watt incan-
descent fixture). For example, a light with 0.5
maximum intensity in 3D Studio MAX or 3D Studio
VIZ converts to 1250 cd in Lightscape. To modify
the scale, enable the Maximum Light Intensity Scale
option and type a value in the corresponding box.
Light Intensity at Distance
Enable this option to convert lights by matching the
intensity at a specified distance. Enter the distance in
the corresponding box.
Average Target Distance
Enable this option to convert lights by matching the
intensity at the average distance between targeted
spotlights and their targets. The average distance is
displayed in the box to the right. This option is not
available if there are no targeted spotlights in the
model.
Use Attenuation
Enable this option to convert lights with range
attenuation.
Preserve Spotlight Angles
Enable this option to select how spotlight beam and
field angles are converted.
When this option is enabled, the beam angle in
Lightscape is set to the hotspot angle. Enable this
option only if you want to specify the beam angle to
use in Lightscape when you create spotlights in 3D
Studio MAX or 3D Studio VIZ.
When this option is disabled, the beam angle in
Lightscape is set to the angle where the 3D Studio
MAX or 3D Studio VIZ intensity is one-half of the
spotlight intensity.
Note: Imported light sources are not generally
based on physical principles. You may have to
adjust the lighting in Lightscape to obtain an
acceptable result. For more information, see
Chapter 8, “Artificial Lighting.”
Exporting Materials
Each 3D Studio MAX or 3D Studio VIZ material is
converted into a Lightscape material definition
using the following 3D Studio MAX or 3D Studio