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594 Chapter 20: Managing Scenes and Projects
Use M ax ’ s—
Exports the current vertex color of the
object defined in the scene.
Calcul ate on Export—Calculates the diffuse color at
theverticesduringexport,basedonthecurrent
lighting and the objects’ materials.
Bitmap URL Prefix group
Lets you specify a URL prefix for bitmaps assigned
to objects in the scene. You must keep all your
texturebitmapsineitherthesamedirectoryas
the WRL file or in one other location, which you
specify here. If your maps are stored in other
locations, you will ha ve to manually search for the
map in the WRL and change its location. Not all
browsers will display error messages if the maps
aren’t found on the WWW server.
Use Pr efix —Enables the prefix mechanism. If this
boxisturnedoff,imagemapsmustbeinthesame
location as the WRL file.
Pref ix —Adds the prefix you enter here to the
names of all assigned bitmaps. The name can be
a full URL (beginning with HTTP), or it can be a
relative path (a subdirectory of the location of the
VRML97 file). For example, if you enter "Maps"
for the prefix, when the browser opens a VRML97
file that has a texture map assigned to it, it will
look for the subdirectory "Maps." “Maps” must
be a directory that is directly under the directory
where the VRML97 file resides.
Use forward slashes (not backslashes) to enter
longer paths; for example: Myfiles/maps.
Sample Rate
Displays a dialog that lets you specif y sample rates
for controller-based and coordinate-interpolated
animation, as well as the Flip-B ook output rates.
Setting sample rates lets you trade off between
animat ion fidelity and file size. The default values
give good results in most cases. For the greatest
animation precision, use a lower number (a higher
sampling rate).
World Info
Lets you enter information about the world. This
has no effect on the visual appearance or behavior
of the world. Some browsers can display what
you enter in the Title field, for example, in the
browser windo w’s title bar. You can use the Info
field to provide author, versio n, and copyright
information.
VRML97 Export
Vrmlexp.d le isforcreatingandexportingscenesin
the VRML97 format. VRMLEXP exports .w rl files,
which can be v iewed in any VRML97 browser.
Mak e sure that you have the most current
version of y our VRML browser and check its
documentation to insure that it supports VRML97.
This documentation covers:
VRML97 Helper Objects (page 3–597)
Exporting to VRML97 (page 3–591)
VRML97 Tips (page 3–595)
VRML97 Specification (page 3–597)
Procedures
To create V RML97 files:
1.
Create the objects that make up the scene.
2. IntheCreatepanel,chooseHelpers.
3. Use the tools in the VRM L 97 Helpers (page
3–597) to add actions and triggers and prepare
the scene.
4. Choose File > Export and export the scene in
the VRML97 format.