Autodesk LIGHTSCAPE, Manual

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Exporting 16
246
Lightscape
Inline Nodes
Use this option when using LODs and Branching
Factors to divide the main file into one (or more)
subfiles. This can improve performance as these
subfiles are downloaded by the browser only as
needed.
Disable this option to include all data in a single
VRML file.
This option is enabled by default. If this option is
enabled and there are no LODs or Branching
Factors, it has no effect.
Embed Textures
Use this option to embed texture map information
in the file. If this option is disabled, a reference to the
texture file (filename or URL) is embedded in the
file.
This option is disabled by default.
Setting Level of Detail
Set the level of detail (LOD) to more efficiently use
polygons in a scene. For example, in a model of a
forest, you can create an LOD made of large poly-
gons to represent the forest when viewed from a
distance. You can replace the LOD with one
containing more polygons as you move closer to the
forest, so that you can see the trunks and leaves.
Lightscape creates the coarsest LOD from the orig-
inal surface, and each subsequent LOD takes the
next finer level of mesh subdivision into account.
You can set the number of LODs that the system
generates as well as the distance at which they are
displayed. You can also specify the number of 3D
regions into which the system divides your model.
To set the level of detail:
1.
Click the Level of Detail button in the Export
VRML dialog.
The Level of Detail dialog appears.
2. Enter the cutoffs in the LOD Cutoffs box. Sepa-
rate multiple entries with commas.
3.
In the Minimum LOD box, enter the coarsest
LOD to generate.
4.
To specify a subdivision factor for your model,
enter the required value in the Branching Factors
box.
Note: This value must be an integer greater than
or equal to 2.
5.
Click OK.
LOD Cutoffs
Set this option to specify the distance from the
viewer position at which the LOD displays. When
specifying LOD cutoffs, the values must be
increasing real numbers, with multiple entries sepa-
rated by commas.
Order the distance entries from the closest (finest)
LOD to the furthest (coarsest) LOD. Distances are in
the current model units.